Abstract Through their evolution, monotremes have developed several characteristics that make them unique from most other mammals. The focus of this paper lies on the electroreceptive capabilities of monotremes. Electroreception of monotremes is partially comparable to that in fish. The bill of the platypus, Ornithorhynchus anatinus, and the beaks of the echidnas, Tachyglossus aculeatus and Zaglossus bruijni, all contain three types of receptors: push-rod mechanoreceptors, serous gland electroreceptors
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
Question 1 Class: Mammalia Linnaeus, 1758 Subclass: Prototheria Order: Monotremata Bonaparte, 1837 Family: Ornithorhynchidae Gray, 1825 Genus: Ornithorhynchus Blumenbach, 1800 Species: anatinus Shaw, 1799 Binomial name Ornithorhynchus anatinus (Shaw, 1799 ) Question 2 Describe the morphological features (external) uniquely distinguishing the platypus. The most unique feature of the platypus is the soft and pliable bill. The bill surface is perforated with openings that contain nerve
The platypus is a fascinating creature that has defied science for many years. They have stumped even scientists just by existing. The platypus is recently known for appearing as one the main characters in the popular kids cartoon “Phineas and Ferb” by Disney Channel. However, the curious creature is not typically a super agent like the cartoon shows us. As cool as that would be, it’s not true. Though the platypus facts are just as awesome as the platypus fantasy. This unique creature has a
defenition of a monotreme is an unusual mammal that lays eggs instead of giving birth to live babies. A few examples are the echidna and the platypus. Their skulls have certain features that resemble reptiles. They have three bodily systems, they have the digestive system, urinary system, and reproductive system. These systems all end up in the same chamber for monotremes called the cloaca. Cloaca means “one hole’’ so it fits perfectly with the monotremes situation. After monotremes give birth they
Today, eutherians have effectively outcompeted its fellow mammals marsupials and monotremes for ecological niches. They are found in virtually every part of the world native to Europe, Africa, Asia and America, including oceans. Monotremes and marsupials are mostly found in Australia and New Guinea only (Archibald, 2001). The ability to outcompete fellow mammals is characterised by their method of gestation where they foster their young within the mother’s body by the placenta, allowing nutrients
other kinds of mammals lay eggs, and most of the species are echidnas. This is incredibly spectacular and eminently rare. The duck-billed platypus takes up one fifth of all of the monotremes, the other four species are types of echidnas. This makes the platypus even more unique because it is the only one of its kind (Monotremes Egg-Laying
Lab Report Comparing Oxygen Consumption Rates in Different Mammalian Subclasses The purpose in experimenting with computer simulations was to compare oxygen consumption rates in different mammalian subclasses. We compared monotremes, marsupials, and placental mammals at both warm and cold temperatures. The results supported our hypothesis that when temperature increased, metabolic rate decreased. This was also supported using a student's t-test. We also found that placental mammals had the
facts - national geographic." national geographic February 2014. Saleem, Maria. "Egg laying mammals list and facts with pictures." liveanimalslist.com 2013. 27 January 2014. mammals.php>. Smith, P.A.. "Platypus facts | duck-billed platypuses | monotremes." animalfactguide.com 2007. 29 January 2014. . "The duckbill platypus." Jesus is Lord 08 February 2014. lord.com/platypus.htm>. "Tourism tasmania corporate - platypus." Tourism Tasmania 2009. Tourism Tasmania. 13 February 2014. . "Where to
teeth for holding and tearing the kill. • Herbivore therapsids: The teeth of herbivores were also mammal like. Some had large gap called diast... ... middle of paper ... ...rs ago, they diversified, leading to the three major groups of today: monotremes (Prototheria, including the platypus, echnidna, and extinct relatives), marsupials (Metatheria, including kangaroos, koalas, and many obscure living and extinct forms), and placental mammals (Eutheria, including mice, elephants, whales, and humans
But now, directly comparing them to other mammals, the platypus is one of only two monotremes, which are mammals who lay eggs. The other one is the echidna. Unlike “normal” mammals like lions or pretty much anyone that can come up to your mind right now, these two (platypus and echidna) lay eggs. Another difference is that the adult platypi
Australia Australia is an island continent located southeast of Asia and forming, with the nearby island of Tasmania, the Commonwealth of Australia, a self-governing member of the Commonwealth of Nations. The continent is bounded on the north by the Timor Sea, the Arafura Sea, and the Torres Strait; on the east by the Coral Sea and the Tasman Sea; on the south by the Bass Strait and the Indian Ocean; and on the west by the Indian Ocean. The commonwealth extends for about about 2500 miles from
the roles of these compounds and the possibility of them being used in medicine. Introduction The Platypus (Ornithorhynchus anatinus) is a unique animal that is found only in Australia. It is in the class Mammalia and the order Monotrema. Monotremes are phylogenetically the oldest of the mammals and can only be found naturally in Australia and in nearby New Guinea. They are quite different from placentals and marsupials and are believed to be the link between the reptiles and the other mammals
Earth is the only known planet up to date which sustains life. A few millions years ago, Earth was home to the one of the most vicious and devastating creatures well-known to mankind ̶ dinosaur. Wrapped in a cocoon of evolution, Earth, along with most living beings, had endured metamorphosis, transforming the world to what it is now. Gigantic deadly dinosaurs went extinct, whilst only a minority that survived mutated into smaller-sized animals. Animals that roam the Earth are classified into three
Does Tasmania really take people’s breath away? Is its beautiful landscape and indigenous animal diversity truly a one of a kind? The answer is, yes of course. It is truly hard to tell whether the escaping landscape of both rainforests and beaches that make this country wondrous or is it the abundant and incredible animals that inhabit them. Scientists, climatologists, botanists, biologists around the globe will agree that Tasmania is both a great environment and animal extravaganza for several
Placental Ruminants and Herbivorous Marsupials of Australia The marsupial animal species that have evolved on the isolated continent of Australia are unique compared to the rest of the animal kingdom in many ways due to the harsh and distinctive environment found on the continent. The major area of marsupial biology that distinguishes them from all other eutherian mammals is their mode of reproduction. However, it can be said that there are many other areas in which unique differences can
P., et al.. (1998). The UTX gene escapes X inactivation in mice and humans. Hum Mol Genet 7, 737–742. 28. SATORU TOYOSAWA, COLM O’HUIGIN, FELIPE FIGUEROA, HERBERT TICHY, AND JAN KLEIN. Identification and characterization of amelogenin genes in monotremes, reptiles, and amphibians. Proc. Natl. Acad. Sci. USA Vol. 95, pp. 13056–13061, October 1998 29. Anette Mayer, Georgia Lahr, Dick F. Swaab, Christof Pilgrim, Ingrid Reisert. The Y-chromosomal genes SRY and ZFY are transcribed in adult human brain
Adaptations of Australian Animals to Desert Conditions Australian desert animals are exposed to such conditions as scarcity of food, increased body temperature, and dehydration. However, through behavioral, physiological, and anatomical adaptations, they can survive in the harsh outback. What specific functions allow desert animals to conserve water and reduce heat gain while maintaining homeostasis? How is metabolism affected? For many Australian animals, enzymes or cells are altered and hormones