Your search returned over 400 essays for "mammals"
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Marine Mammals and Fossil Records

- The fossil record demonstrates that mammals re-entered the marine realm on at least seven separate occasions. Five of these clades are still extant, whereas two are extinct. the degree to which each of these clades has adopted an aquatic lifestyle. Both Cetacea and Sirenia originated at about the same time and were fully aquatic by the end of the Eocene epoch. Each of these evolutionary histories is different from the others based on which changes in each anatomical system occurred. Despite this finding, they all have one change in common at the very beginning....   [tags: Mammals, Marine, Aquatic Lifestyle, Water]

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Marine Mammals in Captivity

- Imagine a warm day in February, a day that you have been waiting for forever, to see a majestic sea mammal, an orca (commonly known as a killer whale). The show was called “Dine with Shamu”, the orcas were doing amazing tricks and splashing the kids in the front row. After the show was finished, you make your way under the stadium to get a picture with the star of the show, Tilikum. As you wait for him to show himself, a siren goes off and sends everyone into a panic. You look at the crystal clear pool behind the glass, and see Tilikum dragging a women’s body down to the bottom of the pool....   [tags: Sea Mammal, Orca, Killer Whale]

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The Characteriscs of Mammals

- Earth is the planet that rich of living things and they are biologically classified into Domain, Kingdom, Phylum, Class, Order, Family, Genus, and Species. Mammal is one of the classes in Kingdom Animalia. Several studies have been conducted to visualize the evolution of mammals from their ancestors. Mammals have several descriptive characteristics which are their evolution trend, reproductive behavior, physical appearance, specific blood circulation system and their feeding behavior (refer to Figure 1 in Appendix 1)....   [tags: biology and taxonomy]

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Olfaction in Mammals

- The sense of smell is one of the earliest developed senses in existence, as well as one of the most important. Out of the subphylum Vertebrata, the class Mammalia have the greatest olfactory perception and the most specialized of noses. As well as in some other vertebrates, the sense of smell is distinct in mammals, but at the same time unlimited in its ability to tell the difference between smells. The first people to notice the importance of scent glands in mammals were perfumers. These various glands produced the odours of musk, civet, castor, and ambergris....   [tags: subphylum Vertebrata, the class Mammalia]

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The Ancient Relatives of Mammals

- ... For example, synapsids had two occipital condyles (which are bony knobs forming a joint between the head and neck). Synapsids have always traditionally been classified as reptiles for theoretical reasons because, the standard accounts of the history of life say that both mammals evolved from synapsids, and that mammals evolved from reptiles. If both of these claims are true, then synapsids have to be classified as reptiles. But is this assumption correct. It may not be so, as the earliest known synapsid fossils are actually the same age as the earliest known reptile fossils....   [tags: synapsids, moschops, mesozoic era ]

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The Different Types of Teeth of Mammals

- In mammals teeth develop as distinct organs. Some organs such as hair and certain glands share similarities with tooth organogenesis in their morphological and molecular features of development, but not their regenerative abilities. Dentition, by definition, refers to characteristics of a set of teeth including type, arrangement, shape, and number. During their evolutionary course, mammals have developed a reduced ability for tooth regeneration, but on the other hand mammalian teeth have developed many variations in size and shape....   [tags: teeth, dentition, incisor, canine, molar]

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The Extinction of Pleistocene Mammals

- During the late Pleistocene, a mystery occurred in which large mammals went extinct in North America while they survived in other parts of the world. Scientists studying the late Pleistocene extinction provided a plethora of explanations, including overkill by humans, extraterrestrial events, and climate changes (Faith and Surovell, 2009). However, there was no unified explanation that they all agreed upon. Taking note of this, J. Tyler Faith and Todd A. Surovell conducted tests to discover whether the extinction was a single event or a long-term process....   [tags: Paleontology]

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DNA Hydroxymethylation of Mammals

- Epigenetic changes refer to mechanisms which alter gene expression without altering the underlying DNA sequence. Sometimes, these changes are inherited throughout the cell’s life via cell division. Mechanisms that induce epigenetic changes include DNA methylation, histone modification, prions (which can be inherited without modifying the genome), and RNA signalling. This paper will focus on DNA hydroxymethylation in mammals. DNA methylation is a postreplicative modification that occurs when a methyl (-CH3) group is added at position 5 of the cytosine pyrimidine ring and “establishes a silent chromatin state by collaborating with proteins that modify nucleosomes.” (Rudolf Jaenisch, 2003)....   [tags: Medical Research]

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Chemical Communication in Mammals

- Chemical Communication in Mammals Chemical Communication in Mammals In mammals they use a few types of communication and one of them is called Chemical Communication also known as Pheromones. These chemical messengers square measure transported outside of the body and have an effect on neurocircuits, as well as the autonomous system with secretion or protein mediate physiological changes, inflammatory sign, system modifications and/or behavioral change within the recipient. There are physical limits on the sensible size of organisms using pheromones, as a result of at little sizes secretion diffuses far from the supply organism quicker than it is created, and a wise concentration accumulat...   [tags: physical limits, pheromones, neurocircuits]

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Small Carniviours Mammals: Ferrets

- {INTRODUCTION} A ferret is a small carnivorous mammal, the domesticated strain of the European Polecat. Mustela putorius furo, the domestic ferret, belongs to the weasel genus of the Mustelidae family. [2] Domesticated some time ago (estimated to be around 2, 500 years) for uncertain reason, ferrets are mainly used for hunting, though increasing numbers are being kept as household pets. Small, long and limber, the ferret is sometimes related to a slinky. With their lengthy body and flexible spine, the ferret can sometimes be seen in unpredictable poses....   [tags: domesticated strain of the European polecat]

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Hedgehogs: Curious Little Mammals

- I will be talking about hedgehogs, and what they are, along with what they do. First, hedgehogs are mammals that are native to Europe, Asia, and Africa. There are some fifteen species of hedgehogs in these listed countries, says National Geographic (N.D.). Hedgehogs have also been introduced into nontraditional ranges such as New Zealand. The hedgehog was named because of its peculiar foraging methods. These animals root through hedges and other undergrowth in search of the small creatures that compose the bulk of their diet-insects, worms, centipedes, snails, mice, frogs, and snakes....   [tags: biology, pets]

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Emotion and Cognition in Our Oceans' Mammals

- With forty-three dead (Bekoff, 2013) and countless others living in torment, it’s a wonder that humans haven’t decided to free the orca whales that are held captive in amusement parks all over the world. Marine biologists, psychologists, and other specialists in the field are beginning to recognize a kind of psychosis (Bekoff, 2013) that sets in on the jailed cetaceans. With symptoms that mimic those of humans suffering from post traumatic stress disorder (PTSD) (Bradshaw, 2010), there is no denying that these underwater inmates are sick....   [tags: animal behavioral science]

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Transport in Mammals

- Transport in Mammals A recurring theme in biological systems is the surface area to volume ratio. All cells require nutrients and most require oxygen as well. Wastes also need to be removed. With a small organism this demand can be met by simple diffusion over the body surface but larger or very active organisms need a transport system with a pump to ensure that the supply meets the demand of all cells, even those deep within the body. In mammals, the pump is the heart. Substances are carried in a transport medium of the blood....   [tags: Papers]

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Mammals as BioContol

- Mammals as BioContol Biological control is a method of decreasing the population of pests that compete with vegetation. There are different methods of bio-control. Farmers use parasites, diseases, and predators as forms of bio-control in their fields. Sheep, goats, bats, cats, and mice are among the different mammals used for pest control. Sheep are used to control leafy spurge on many rangelands, and bats for controlling insects. We will discuss the benefits and downfalls of sheep and goats controlling unwanted weeds, and how a study has been done to prove that bats have made a huge difference in the population of insects that harm agricultural crops....   [tags: Environment Farming Agriculture Essays Papers]

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Can Marine Mammals Suffer From Decompression Sickness?

- Can Marine Mammals Suffer From Decompression Sickness. Marine mammals are able to suffer from decompression sickness, which is a condition that occurs when sudden decompression causes nitrogen bubbles to form in the blood and tissues of the body. The lifestyles of marine mammals makes them susceptible to this condition, however, they have adapted to overcome this obstacle. Many marine mammals are capable of storing gas in their trachea during dives. The trachea is reinforced by cartilage, which supports its structure during dives where the lungs collapse under pressure....   [tags: nitrogen bubbles, blood, lungs]

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Transitions Of Reptiles To Mammals

- Transitions of Reptiles to Mammals A long long time ago, in a galaxy not too far away, was a little blue planet called Earth, and on this world not a single mammal lived. However a lot of time has past since then and we now have lots of furry creatures that are collectively called mammals. How did they get their. Where did they come from. These are the kinds of questions that led me to my subject of choice. I will endeavor to provide examples, using specific transitional fossils, to show that mammals have evolved from a group of reptiles and were simply not placed here by unknown forces....   [tags: essays research papers]

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Animal Rights for Marine Mammals

- Animal Rights for Marine Mammals Written By: Bottlenose dolphins became part of a United States Navy program in 1959 for the purpose of conducting scientific research into their sonar and hydrodynamics in hopes of getting design ideas for submarines, ship hulls and weapons. It was discovered dolphins hear and navigate in the water by using their natural sonar, which happened to be more precise than most fabricated sonar systems. In the mid-sixties, Navy dolphins were used as mail carriers to underwater laboratories in their home of San Diego, California....   [tags: essays research papers]

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Nerve Regeneration in the Peripheral Nervous System (PNS) of mammals

- INTRODUCTION Nerve Regeneration in the Peripheral Nervous System (PNS) of mammals PNS neurons in mammals have a capacity to regenerate and re innervate the target. However functional recovery varies, depending on the type and location of injury, age of the neurons and other factors, but the recovery is never complete. An overview of the regenerative response Following an injury, in the distal nerve stump a series of degenerative processes prepare the right environment needed for an effective regenerative response....   [tags: Biology]

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Club Cells Among Mammals Used in Lung Research

- To find the differences among mammals in Club cells Plopper and colleagues performed three research studies to quantitatively and qualitative assess Club cells among mammals used in lung research [1-4]. In the first study researchers examined lung tissue from adult male rabbits, guinea pigs, rats and hamsters. Lung tissue from four male rabbits, four male guinea pigs, six male rats and eight male hamsters was used. Each animal was sedated with pentobarbital, had trachea cannulated, and thoracic contents removed all together....   [tags: non smoking humans, bronchiolar epithelial]

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A Brief History of the Extintion of Large Pleistocene Mammals

- Many of the world`s scientists believe we are in the middle of another great extinction event. Such extinctions have happened periodically throughout Earths history of life. Most infamously is the K-T (Cretaceous Tertiary) event, which killed of our beloved dinosaurs. Pacing back in time, there were five known events; one at the Triassic (which may have gave way to the rise of the dinosaurs), another at the end of the Permian that produced a vanishing of species (approx 95%) never equaled until today as some will argue....   [tags: history of the Earth]

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Mechanical Mammals

- One day I went to buy a brand new Ford Mustang. The reason I wanted a new car is because I saw this commercial about a new kind of car that had instincts like an animal. I thought it would be really strange to have one of those. As soon as I saw that commercial I knew I had to get that car. I thought that it would be cool to have a car with those instincts. When I went to the car dealership I found that car on sale with a 30 day money back guarantee only because it was a new kind of car. It was a 2008 model it was painted dark blue with white racing strips....   [tags: essays research papers]

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Marine Mammals

- Marine Mammals 1. Introduction Humpback whales (Megaptera novaeangliae) annually migrate from their summer feeding grounds off southeast Alaska to winter in waters off the Hawaiian Islands, Baja California Sur, Mexico and northern Japan (Baker and Darling). The number of humpback whales in the Hawaiian waters generally peaks from mid-February through mid-March ( Baker & Herman, 1984). Calving and breeding is an important function of humpback whales while wintering at lower latitudes ( Herman and Herman et al., 1980)....   [tags: Papers]

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Adaptations of Mammals to Arid Australian Environments

- Adaptations of Mammals to Arid Australian Environments Abstract High temperatures and low rainfall characterize much of Australia. It is hard to believe that animals can survive in arid conditions, much less prosper. Yet there is a whole range of mammals, among other life forms, that do. These animals survive because they have adaptations that allow them to live in the hot, dry conditions. The function of the adaptations is to balance thermoregulation with water gain and loss. For instance, many mammals that live in the desert obtain much or all of their water from the food they consume....   [tags: Environment Australia Animals Essays]

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The Significance of Cloning Mammals on Human Cloning

- The Significance of Cloning Mammals on Human Cloning Cloning has been going on in the natural world for thousands of years. A clone is simply one living thing made from another, leading to two organisms with the same set of genes. In that sense, identical twins are clones, because they have identical DNA. Sometimes, plants are self-pollinated, producing seeds and eventually more plants with the same genetic code. When earthworms are cut in half, they regenerate the missing parts of their bodies, leading to two worms with the same set of genes....   [tags: Papers]

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The Common Bottlenose Dolphin: Tursiops Trucantus

- Introduction The bottlenose dolphin is also known as Tursiops truncatus. It’s the adorable mammals whose mouth somehow appears to be curved in a friendly smile that invites people to come and swim with them and watch them perform complex tricks. They weigh around eleven hundred pounds and can be anywhere between ten and fourteen feet long. These creatures can swim around eighteen miles per hour and often travel in large social groups. They can live up to fifty years and most are found in the tropical oceans and others can be found in warm water all over the globe....   [tags: sea mammals]

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Biology: Epigenetics and Nuerogensis

- Epigenetics and Neurogenesis “Epigenetics” is defined as to study the mechanisms which include DNA and histone modifications that lead to change in the expression of genes or cellular phenotype without aleration in the primary sequence of the DNA. These modifications are having a heritable pattern of gene expression in nature. Commonly studied epigenetic marks referred as DNA methylation and histone modifications include acetylation, ubiquitination, sumolyation, phosphorylation and others....   [tags: DNA, mammals]

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Sea Lions: Nature's Playful Aquatic Land Mammals

- Sea Lions: Nature's Playful Aquatic Land Mammals Introduction Sea lions may look like sea creatures, but they also behave like terrestrial animals. Unlike whales, mammals that spend their entire lives in water, sea lions inhabit both the water and land throughout their lives. This aquatic land animal prefers the water for food, fun, and safety; while preferring the land for socializing, territory, and procreation. Being mammals, they share many behaviors common to humans and other mammals. Like mammals, they are born with the ability to walk on land shortly after birth....   [tags: Essays Papers]

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The Effects of Maintaining a High Constant Body Temperature in Mammals

- The Effects of Maintaining a High Constant Body Temperature in Mammals Endothermic organisms maintain a stable core body temperature through their own adapted physiological mechanisms and appropriate changes in its behavioural patterns. The ability of an endotherm to keep its internal environment at a constant temperature allows the enzymes catalysing the vital biochemical reactions to be close to their optimum temperature, giving an efficient metabolic rate. The metabolic rate is defined as the rate at which all the cells in the body carry out their biochemical reactions....   [tags: Papers]

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Dolphins are Amazing, Intelligent, Marine Animals

- Dolphins are well known for their agility and playful behavior in the wildlife of all the oceans in the world. They have many characteristics, and also there are a variety of different types and kinds of dolphins, which make them very intelligent creatures. Dolphins are smart marine mammals and great swimmers. They are known to be very friendly to humans and other wildlife creatures, dolphins often display a playful attitude which makes them popular to human nature and the culture. They can be seen jumping out of the water,riding waves, play fighting and occasionally interacting with people swimming in the water....   [tags: mammals, communication, swimmers]

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The Developing and Controversial Industry of Cow’s Milk

- The Developing and Controversial Industry of Cow’s Milk Often described as “Nature’s Perfect Food”, milk is the foundation of life for all newborn mammals (Velten 10). Milk has played a central role in the American cultural and industrial landscape over the last century, binding farms with urban consumers, placing regulators at odds with producers, and inspiring a constant dance between producers, consolidators, nutritionists and end-users about how it is marketed and sold (Smith-Howard 368). As I have become older I have gained a new yet expected intolerance to lactose....   [tags: mammals, food, survival ]

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Introduction to the Dissection of the Mink

- Purpose: To analyze and discuss the anatomy of the mink in order to compare to that of a human. Even though the mink’s anatomy will be a bit different some similarities could always be found. Research Physical Characteristics The general characteristics of minks is that they are mammals just like humans, which means that we both are born with hair, mammary glands for the females and different characteristics in our anatomy to those of birds and reptiles. Their scientific name is Mustela Vison. The mink has very long trunk, short legs and very large neck....   [tags: mammals, mustela vison, animals]

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The Evolution of a Horse

- ... Between thirty-four and fifty-five million years ago, horses began their history on the North American continent. This occurred in the early to mid-Eocene epoch of the Tertiary period. The Hyracotherium or Eohippus, also known as “the Dawn Horse” had relatively long legs compared to its body, and was already developing adaptations for running. It was a small, dog-sized, forest grazer (“Wild Horse: An American Romance” 1). The front legs had five toes located at the end of flexible and rotatable legs due to the bones not being fused....   [tags: mammals, tapirs, rhinoceroses.]

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The Extinction of Fin Whale

- Animals are a blessing of God. They are seen in different type, shapes and weights in their own category. In marine animals, there are mostly mammals which are found to be in large number. Fin whale is among those mammals that are found in marine life. This type of whale is found in all types of oceans and is a suborder to baleen whales. Fin whale is a very heavy whale. Its weight is estimated to be around 74-75 tones. The weight is not only the only characteristic but its length is also very interesting....   [tags: specie, marine animals, mammals]

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Echolocation in Marine Biology

- ... Without proper communication, a dolphins feeding would be unsynchronised mayhem. dolphin communication makes feeding efficient as well as extremely easy for individuals to properly survive in their environment. Dolphins, and whales for example produce this sound by squeezing air through passages of the nasal cavity and out of an organ beneath their blowhole called the ‘melon. ’ When marine mammals send sound out these sounds, they rely on the speed of sound and an objects mass for the waves to bounce off of and return to the original individual from which the sound was transmitted....   [tags: marine mammals, dolphins, organisms]

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Types of Animals on Earth

- ... This is similar to birds and reptiles. On the other hand, all other living mammalian species, including humans, are in the subclass Theria. They have in common the fact that they give birth to live young. Therian mammals apparently did not evolve from the Prototheria. The relatively primitive prototherian reproductive system evidently evolved after their evolutionary line separated from the other early mammals. The next type of animals to be discussed is reptile. The modern reptiles representing only a small part of those present in ancient times....   [tags: mammals, reptiles, amphibians, life, animals]

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Life Experience of Sea Animals in Captivity

- Anyone who has been to SeaWorld has seen trained whales, dolphins, and seals. SeaWorld guests are entertained by the sea mammals in the tanks, jumping in the air on command by whistle. These tricks draw guests into the park. What may seem to be fun for the viewer, is torture for the mammals. There is a deadly truth behind all sea mammals in captivity: they don’t survive well there. Though sea mammals provide entertainment, they do not belong in captivity. Imagine being at home and then somebody broke in and you were forced, without any choice, to join the circus....   [tags: seaworld, sea mammals, whales, orcas]

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An Unforgettable Bite

- Australia is a large island continent that holds some of the most diverse range of biogeography regions. It is the home to the endemic order of Marsupialia. These mammals are unique to the rest of the Mammalia class due to the fact that the female possesses a skin pouch. Some of the more well-known marsupials that exist today are the kangaroo, the wombat, and the koala (Thylacoleo Carnifex 2011). However, most individuals today are unaware of a species of carnivorous marsupials that once roamed Australia over 6,000 years ago....   [tags: Australian Mammals, Marsupial Lion]

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How People Survive Living in the Artic Region

- Believe it or not, in the arctic region, where the average temperature of the year is about -12 celsius degree, there are more than 9,000,000 people, including 150,000 indigenous people living constantly. Even though many of them now have houses, automobile and electronics like rest of the world, the way they survive in such a rough environment is still an interesting topic to discover. A typical arctic indigenous ethnicity is Eskimo people, who is believed originated from eastern Asia and then migrated to arctic area....   [tags: environment, house, automobile, reindeer, mammals]

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The Conservation of Whales and Dolphins

- The Conservation of Whales and Dolphins: Science and Practice, edited by Mark P. Simmons and Judith D. Hutchinson, is a book I have decided to utilize as a foundation piece for my final paper. This book contains in-depth information from multiple authors, compiled in chapter format. The compilations discuss many global issues revolving around the cetacean species, such as the protection and conservation of these water mammals and the various ways that they are endangered or harmed. This book also contains information about numerous international organizations and departments that regulate and maintain whaling laws and marine-life policies....   [tags: water mammals, cetacean, whaling, protection]

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Captive Tiger Management Activity in San Diego Zoo and Malacca Zoo.

- Captive Tiger Management Activity in San Diego Zoo and Malacca Zoo. Tiger (Panthera tigris) is one of the best-known large mammals and the largest living cat. However, their numbers in the wild are decreasing significantly. According to Seidensticker et al. (2010), there are three subspecies becoming extinct since the 1940s. Particularly, Panthera tigris sumatrae or also known as Sumatran tiger is now listed as critically endangered, with around 300 individuals proposed to be living in the wild (Seidensticker et al., 2010)....   [tags: largest living cat, wildlife, mammals]

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The Social Cat: The Lion

- The Social Cat Most wild cats are known to be solitary mammals, but there is one exception—the lion. Lions have captured the attention of many because of their exciting sociality. Lions are group hunters; other cats are solitary hunters. Lions live in groups; other cats live alone. In their article “The Short Happy Life of a Serengeti Lion”, Quammen, David, and Michael Nichols explain that these cats are “the only feline that’s truly social” (60). One common movie in today’s society, “The Lion King”, portrays the lion as the “King of the Jungle.” Many humans view lions as vicious, roaring animals that are the top of the food chain....   [tags: lion, mammals, hunters, group, social]

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Monotreme Reproductive Biology and Behavior

- Monotreme Reproductive Biology and Behavior Monotremes are mammals that are oviparous, or egg-laying. There are only 3 extant species of monotremes: the playtpus and two species of echidna. Their reproductive systems are highly specialized to facilitate both the production of eggs and milk. The male tract is quite simple. The female tract has qualities similar to those of birds, though female echidnas also possess pouches. The monotreme egg is also very specialized and somewhat similar to a reptile egg....   [tags: Mammals Wildlife Essays]

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Solution to the Decreasing of Number of Whales

- The world consistently undergoes ecological change, and each change, whether positive or negative, affects living creatures differently. Some of these changes are biological, stemming from the natural processes that envelope our complex ecosystem, while others are brought about from mans neglect for the delicate world we live in. One of the most controversial topics within the last century surrounding the perpetual damage life on earth, has been the declining population of cetaceans, or whales. Their decreasing numbers are sometimes due to natural factors, but for the most part the unnatural factors outweigh these....   [tags: cetaceans, ban, law, mammals, IWC, Japan]

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Wildlife Conservation and Biology

- There are 6.5 million species of land mammals. Wildlife biologists get the privilege of studying and spending time with these animals as their everyday life. I should be a wildlife biologist so I can study land mammals. Wildlife biology is a field of biology in which land animals are studied. It deals with all animals with backbones and studies individual species of wildlife, their habitats, and surrounding ecosystems (Fitzgerald). It also studies how animals may interact with their ecosystem....   [tags: Land Mammals, Large Animals, Animals, Biology]

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The Anatomy of a Dolphin

- ... This can scare away some predators, but predators like sharks might take this as a sign that it is fine to feed now. To protect themselves while sleeping, they close one eye and leave the other eye open as well as one side of the brain stops and sleeps while the other side doesn’t. This is useful in multiple ways. Dolphins have to remember to breath or else they will die, so the fact that one side of the brain is active allows them to remember and know when to breath. They can also keep a lookout for dangers with one eye open....   [tags: delphinidae, marine mammals]

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Phosphoinositide 3-Kinase Review of Classes and Role in Mammals

- Enzymes play a vital role in biological systems as signaling molecules. Signaling occurs though a chemical reaction that enzymes help catalyze by allowing it to occur through a pathway with lower activation energy (Domin and Waterfield, 1997). Enzymes are made from a chain or chains of amino acids that are linked by peptide bonds, otherwise known as proteins. One particular enzyme pathway of interest is phosphoinositide 3-kinase (P13K). This enzyme is a lipid kinase that has further signaling activity once activated, also known as a cascade induction....   [tags: biological systems, enzymes,signaling molecules]

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Grizzly Bears in North America

- Grizzly Bears in North America Introduction The Grizzly bear (Ursus arctos) has long been considered to be the symbol of the wild. They are beautiful, powerful and at the same time vulnerable animals. They are known to survive in remote areas not inhabited by humans. The Grizzly was once able to occupy most of the land from northern Mexico to Alaska and most places in between. With a disappearing natural habitat and one of the lowest reproduction rate of any mammal in North America the Grizzly bear has seen population number fall dramatically....   [tags: bear, mammals, animals, ursus arctos]

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Dugong Research

- Dugong Research Scientific name: Dugong Dugon Status: Vulnerable to extinction since 1982 (IUCN) Appendix I of CITES Taxonomy: Class Mammalia Order Sirenia Family Dugongidae Genus Dugong Species dugon Common Name dugong or sea cow Local Name duyong or baboy dagat Description: The dugong is one of the 24 species of marine mammals present in the Philippine waters. The dugong is the only representative of the order Sirenia to be found in the country....   [tags: Marine Mammals Biology Essays]

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Marsupial Reproduction

- Marsupial Reproduction Knowledge can be obtained and conveyed in a variety of ways. One can spend hours upon hours hidden away in the corner of a library, reading the thoughts and discoveries of other researchers and writers. Or, one can allow himself to make his own discoveries through experiments and observations that he makes himself. Both methods are necessary in order to come to a complete understanding of a topic. An experimenter cannot fully appreciate the things that she observes without having a background in that area....   [tags: Marsupials Reproduction Mammals Biolgoy Essays]

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Monkey Family: The Olive Baboons Living in the Savanna

- I am presenting information on the life, past rate of growth and future of the Olive Baboon. I will demonstrate the community relationship shared by the adult females, males, and juveniles in the troop and how the ranking of females plays an important part of troop dynamics. I will explain the specifics of the climate of the savanna biome and what adaptations the Olive baboon, native to this habitat, has to support its survival and the food chain it is part of. I will further show the omnivores behaviors as a predator to rodents, hares, and Thomson gazelles, as a prey to lions, leopards and hyenas, and as an herbivore, that eats tubers, lemon grass and acacia....   [tags: biogeochemical cycles, species, mammals]

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The Blue Whales: The Largest Mammal Ever to Inhabit the Earth

- ... This study also suggest that blue whales use their evolved sense of hearing to navigate and to detect food in the depths of the ocean. Blue whales are baleen species, which means they have fringed blades hanging from their upper jaws instead of teeth, called baleen. Blue whales have a mottled gray coloring, however, beneath the surface they appear blue. Blue whales are air-breathing animals yet they can stay underwater for more than 30 minutes. The blue whale habitat ranges from the Northern Hemisphere to the Southern Hemisphere; they can be found in all major oceans....   [tags: marine life and animals]

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Ecology: Using Tracks and Signs to Determine Presence of Mammal Species

- Writing a short article (maximum 1000 words) on the problems and complexities of using tracks and signs to determine presence (and absence) of mammal species (25%) In the field of ecology finding and identifying tracks and signs has always been one of the hardest job in that field. This is because a range of different problems can and most likely will occur. There are several ways to find animal tracking and signs. When looking for a particular species research will need to be conducted to know what habitats it will be spending most of its time at, this will narrow done the list of species when a footprint or sign has been found....   [tags: footprints, color]

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Marine Mammal: The Nawhal Monoceros

- The Narwhal, Monodon monoceros, is a social, specialized deep-water marine mammal characterized by a unique tooth growth protruding from the upper jaw. Narwhals lives along the coasts and rivers throughout the Arctic,characterized by icy ocean temperatures. Narwhals are usually found in groups of 15 to 20, but herds of several thousand have been seen in the Arctic waters since 1871. Regularly found eastwards from the Canadian Arctic to central Russia they have also been distributed throughout the Eurasian Arctic and in an especially high abundance around the oceans west of Cape Farewell on the east coast of Greenland in the summers and during the winter primarily in the Baffian Bay, and in t...   [tags: water bear, tardigrade]

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Manatees, The Gentle Giant Is Going Extinct

- ... Over the years, due to tourism, Belize has undergone coastal development around the cays. This means that there has been mangrove destruction, and sea grass destruction. There are four main types of mangroves found in Belize, such as red, black, white, and buttonwood. In Belize, mangroves estimate up to 3.4% of the land area, about 296 square miles (CITE). Mangroves serve important ecological service such as erosion control, filter, and clean, while also providing shelter to many marine organisms like lemon sharks, invertebrates, shrimp, and manatees....   [tags: fishing nets, marine, mammal]

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The Sea Mermaid: Manatees

- If a solution is not found, manatees will be completely wiped extinct from the planet. The manatee is a large, aquatic, mammal with two large flippers. The average adult is about 10 feet long and weighs between 800 and 1,200 pounds. Manatees are also known as sea cows; they have a wrinkled head and face with a whiskered snout. The manatees’ closest related relatives are the elephant and the hyrax. Manatees have been on the states endangered list since 1979, but their biggest threats are humans. While some people are extreme manatee conservationists, others could care less about whether this marine mammal becomes extinct, or not....   [tags: aquatic mammal, whales, sea cows]

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Sex Determining Region Y

- Sex Determining Region Y In mammals, the X and Y-chromosomes determine the sex of an organism. If a mammal is homologous XX than that mammal will be female and if the mammal is heterozygous XY that individual will be male, assuming no mutations. What is it about the Y chromosome that dictates the male sex. On the short arm of the Y-chromosome is a region called the sex-determining region Y or SRY that codes for transcription factor “sex-determining Y” protein in mammals. In 1991, the function of SRY was revealed to be the sex-determining gene in mice that was responsible for testes formation....   [tags: x and y chromosomes, mammal, genes]

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A Mammoth Dilemma

- The Pleistocene epoch spanned from 1.8 million years ago to 10,000 years ago [1]. Many genera and even species such as conifers, mosses, flowering plants, insects, mollusks, birds, and mammals from that era still survive today [1]. Others, such as the long-horned bison, saber-toothed cats, giant ground sloths, and the mammoth did not survive [1]. The woolly mammoth was a commonly found mammal during the last ice age [2]. These animals were similar in size to elephants but were adapted for living in the extremely cold conditions typical of an ice age [2]....   [tags: mammal, cloning, genome, technology, extinction]

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The Domestic Dog

- The domestic dog, Canis familiaris, is one of the most diverse mammal species knows. This species can be found nearly everywhere, with separate breeds originating from every continent, except Antarctica. However, as widely distributed as this species is, little is known about its actual origin. Scientists have been able to track some lineages down through fossil records and genetic data. But it is undetermined how exactly old this species is, or even where this domestic dog may have started at. So, how is it that humans are not as familiar with “man’s best friend” as we are with many other species....   [tags: canis, mammal species]

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What Is a Kangaroo Rat?

- A kangaroo rat is a cute little mammal from the, Heteromyidae family, who lives in the western hemisphere of the USA. The native kangaroo rat wasn’t endangered until the 1950’s. They mainly live in California. The Kangaroo Rat is a nocturnal mammal who hide in their borrows during the heat of the day and plugs up their borrows with loose soil as they get ready for the night, where they thrive (3). They have a diet that feeds off of seeds and grains with an average lifespan of 9.8 years. They are about 6 to 7.8 in and have a tail that is 7-8.5 inches long (1)....   [tags: endangered, mammal, water, soil, save]

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Wolves: The Things You Didn’t Know

- Canis Lupus, the Latin term for the “North American Wolf”. A meat eating mammal with the capability of weighing up to 180 pounds and reaching a height of sixty-three inches, the wolf is easily the largest member of the canine family. Over 500,000 wolves once lived in harmony, roaming the Northern Americas alongside the Native American tribes and the rest of the ecosystem. Wolves live in packs, a pack essentially being a family. While the average size of a pack is six to ten, the largest confirmed pack recorded in North America can be found in Yellowstone National Park where the “Druid Pack” numbers thirty-seven strong and counting....   [tags: Canine Family, Canis Lupus, Mammal, Carnivore]

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The Extinction of The Dinosaurs

- Rapid climate change also ends up on the suspect list of possible dinosaur extinction events. During the latter part of the Cretaceous Period continents broke up causing volcanoes to erupt and fill the sky with gas and ash resulting in a drastic climate change (“Dinosaurs Climate Change and Biodiversity”). The shifting of continents changed the Earth’s landscape, altering weather patterns and overall climate (“Dinosaur Extinction Theories”). Also, over a long period of time, climate gradually changed....   [tags: asteroid, climate change, food]

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Polar Bears and their Retreating Habitat

- Include the scientific and common names of your species The Polar bears scientific name is Ursus maritimus, which means “maritime bear”. This was coined in 1774 by Commander C.J. Phipps. The reason for this name was because of the polar bears dependence on the Arctic sea ice, which they spend most of their time traveling and hunting. Another name is Nanuk which is the Inuit name meaning seal bear. According to Polar Bears International (2014) other terms are Beliy Medved meaning white bear in Russian, Isbjorn, meaning ice bear in Norweigan....   [tags: ursus maritimus, marine mamals]

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The Evolution of the World: Industrial-Based, Less Natural, Societies

- ... These updates saw that exceptions to the take prohibitions were included for small takes of incidental for specified activities (like rituals by native Alaskan fisherman or scientific research.) Additionally, a new program to control the taking of marine mammals incidental to commercial fishing operations was implemented. And stock assessments for all marine mammal stocks in waters under U.S. jurisdiction were beefed up. (Marine Mammal Protection Act (MMPA), 2013). Implementation of the legislation is currently overseen by the National Oceanic and Atmospheric Administration (NOAA)....   [tags: marine life, legislation]

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Should Killer Whales be Kept in Captivity?

- Should Killer Whales be Kept in Captivity. Should killer whales be kept in captivity. Killer whales are mammals that travel in schools. These mammals eat large fish, seals, and even other whales. Killer whales can be dangerous, and are really big animals. When looking at all the evidence about killer whales in SeaWorld, laws and actions need to be enforced with this dangerous activity. Keeping these huge animals in small pools does not seem right. Big mammals are not meant to be in small pools....   [tags: small pools, dangerous activities]

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530 words | (1.5 pages) | Preview

Manatees: The Cows of the Sea

- Manatees, or sea cows, are quite different creatures of the sea. Not only do they swim slowly and awkwardly, they tend to have a rather awkward appearance to accompany this behavior. Even though many haweve heard about these majestic marine mammals, few understand everything there is to know about them. There are three main types of manatees: the West African manatee, the Amazonian manatee, and the West Indian manatee. The West Indian manatees themselves can be divided into multiple subspecies: the American, Antillean, Caribbean, North American, and Florida manatees....   [tags: west indian manatees, sea cows, animal kingdom]

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The Encephalization of Primates

- The Encephalization of Primates: Size Matters A crucial turning point in Primate history took place 2.6 million years ago when various selective pressures led to the encephalization of Hominins. The ice age quickly approached this time period and thus resulted in a struggle of adaption and survival for many animals on earth. This took a particular impact on early hominins; Hominins during this time lived in Africa and thus were affected by the Ice age in a completely different way. Africa, instead of becoming colder, became much hotter as result of the frozen oceans, which created a dry savannah environment....   [tags: Explanations, Hominin Brain]

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Animal Dreaming and Substantiation-A Connection to Humanity

- Animal sleep is presented in various patterns like hibernation, nocturnal activity, and even napping. For example, penguins rarely sleep in case of abrupt attacks of predators. They sleep in standing positions for only a few minutes to provide security. In some occasions, penguins take naps in the ocean after a full meal. In contrast, brown bats spend generally nineteen hours just on sleeping hanging upside down. As these examples demonstrate, the state of sleeping in animals is confirmed based on scientific research....   [tags: hibernation, nocturnal activity, napping ]

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Differences Between Dolphins and Porpoises

- The purpose of this paper is to distinguish the differences and similarities of Dolphins and Porpoises. "The term porpoise, whale and dolphin are often used interchangeably, but size (specifically length) is the criterion anatomists have generally used to apply the common name whale" (Dudzinski and Frohoff 2008). The paper will further seeks to identify unique characteristics that dolphins and porpoises possess and the manner in which they utilized these unique abilities to obtain food and survive in oceanic waters....   [tags: Scientific Level, Birthing Effects]

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Animal Dreaming and Substantiation: A Potential Field in Science

- Animal sleep is presented in various patterns like hibernation, nocturnal activity, and even napping. For example, penguins rarely sleep in case of abrupt attacks of predators. They sleep in standing positions for only a few minutes to provide security. In some occasions, penguins take naps in the ocean after a full meal. As this example demonstrates, the state of sleeping in animals is confirmed based on scientific research. The evidence of animal sleep is obvious, mainly characterized by temporary unconsciousness, non-responsiveness to external stimuli, and passivity in movement....   [tags: REM Sleep, Involuntary Body Movements]

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Antomy of Fish and Amphibians

- ... Taxonomy Animals are grouped and categorized thought a classification known system know as taxonomy. There are nine ranks, but the most important ones are Kingdom, Phylum, Class, Order, Family, Genus, and Species. The other two being the first two, Life and Domain. The Latin word for fish is piscis. Fish are categorized in Kingdom as Animalia, in Phylum as Chordata, and in Subphylum as vertebrata. Fish are divided into three major classes. The first class is Agnatha; it is composed of jawless fish....   [tags: body structure, fins, marine animals]

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Zoos: The Importance of Animal Concervancy

- ... wolfi elegans. The Wolf’s guenon is typically a grayish color with a chestnut colored back, black arms, and slightly red legs. The whiskers are yellow with black specks and the ear tufts are white and yellow. However, the coloration differs for each subspecies and individual, making this animal a truly distinct and beautiful creature (The Primata, Wolf’s Monkey (Cercopithecus wolfi)). Similar to other Old World or African monkeys, the Wolf’s guenon has extra skin on its backside to cushion their rear while resting or sitting on hard tree branches....   [tags: monkeys in africa, guenon]

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845 words | (2.4 pages) | Preview

The Capturing of Beluga Whales from the Artic

- When the name Beluga whale comes up, many think of the popular children’s song, “Baby Beluga”; however, many do not know much past that. Beluga whales, along with many whale species, are regarded anywhere from near threatened to critically endangered depending on their location. The debate now is whether Beluga whales should be able to be taken out of their natural environment and put into aquariums around the United States. Although a few years ago the capturing of wild Belugas has been turned down by the federal government, it is now being reevaluated and may be accepted....   [tags: Beluga Whales]

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2042 words | (5.8 pages) | Preview

Genetic Engineering: Researching to Create a Blastema

- Endo 2004 & Scientific American article. Salamanders possess a unique evolutionary ability in which they can regrow limbs after an amputation. A few days after an injury, the wound transforms into a layer of cells that signals for regeneration. This formation is called a blastema, an aggregation of cells similar to stem cells that serve to restore the lost limb. These embryonic cells will give rise to new tissues and differentiating into muscle, nerves, and bones. In contrast to mammals, cell responses to amputations are similar, yet do not contain the regeneration step....   [tags: Endo 2004 & Scientific American article]

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Foreign Languages: Animal Communication

- Social behavior in mammals other than humans has always been something that has fascinated not only scientists, but the general population as well. Large mammals known to exhibit similar behaviors to humans have always been popular favorites at zoos and aquariums. Curiosity and fascination strikes when observing primates making gestures as if communicating in a foreign language, or seals dancing and striking their flippers together. Mammals are capable of displaying a wide range of interesting behaviors and among those that fascinate us is the way they communicate....   [tags: foreign language, bottlenose dolphin]

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Intestinal Neoplasia Model

- The mammalian intestinal tract is structurally a tube that is divided into two segments: the small and large intestine. The inner wall consists of a simple epithelium called mucosa, which is responsible for the processing and absorption of nutrients (Sancho et al., 2003; Barker et al., 2008). The small intestine epithelium is folded into finger-like protrusions, called villi, directed toward the lumen; the valleys are invaginations into the sub-mucosa and are known as the crypts. In the large intestine, the mucosa lacks villi, and the crypts invaginate deep into the sub-mucosa....   [tags: Biology, ]

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890 words | (2.5 pages) | Preview

The Pros and Cons of Cloning

- A clone is a cell, group of cells, or an organism that has descended from an ancestor without sexual reproduction. Humans have found cloning to be valuable and productive. For example, Agricultural scientists use embryo cloning to boost the number of offspring from farm animals. They hope to use cloning as to increase the number of offspring from animals with desired traits, such as lean meat or above-average milk production. Research biologists also use the technique of cloning to study how animals develop during the early stages of life....   [tags: human embryo, ]

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The Evolution of Whales

- The Evolution of Whales Image sitting on the beach one July morning. The sun is beaming down and decide to go for a swim. As you approach the water, you see a whale unusually close. You begin to get nervous as it continues to approach the shore. However, you aren’t worried because you know that they are confined to the sea. As the whale comes near you can see it clearly. Just as you think that it will turn around, the whale walks out of the ocean. If you were to live during the tertiary period, this would be one of the things you would often see....   [tags: Exploratory Essays Research Papers]

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1202 words | (3.4 pages) | Preview

Taking a Look at the Taiga Biome

- Introduction/General information The Taiga is a biome that originates from Northern Russia that means or describes a cool large land with many conifers. Upper North America, Northern Europe and Northern Asia all are mostly Taiga. It is the largest biome and contains mostly conifers but does not have that many animals. The climate is mostly very cold and snowy in the winter and warm in the summer while fall and spring are just transition seasons. Plants Plants in the Taiga are important because the majority of the land is dense conifers....   [tags: Northern Russian territories]

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736 words | (2.1 pages) | Preview

Are We On The Cusp Of The Sixth Mass Extinction Event?

- We are on the cusp of the sixth mass extinction, as estimated the event to be occurring within 2200 years. Scientists have evidences supporting this statement with the extinction rates and magnitudes, and comparing the present conditions to the past “Big Five”—the previous five mass extinction events. Mass extinction is generally known as the forever disappearance of 75% of lives in the globe, therefore species lost is the main driver of such extinction events. With the current high extinction rates and increasing trend of extinction magnitudes, the sixth mass extinction is expected....   [tags: Volcanic Eruption, Climate Dynamics]

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Are We on the Cusp of the Sixth Mass Extinction Event?

- As titled: Are We On The Cusp Of The Sixth Mass Extinction Event. Yes, we are indeed, as we, here defined as all the lives on the Earth at the moment. Mass extinction is times when the Earth loses more than three-quarters of its species in a geologically short interval (Barnosky et al., 2011). In addition, according to the Oxford Dictionary of Geology and Earth Sciences edited by Michael Allaby (2013), mass extinction is defined as the Earth has been taken place environmental catastrophe, removes many groups from environment from record and not replaced, and ecosystems collapse....   [tags: environmental catastrophe, Geology]

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608 words | (1.7 pages) | Preview

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