Recovery
Plan
Of the
Grey Nurse Shark
By Kelly Farrelly
Grey Nurse Shark
The Grey Nurse Shark, also known as a Carcharias taurus is from the Odontaspididae family and is a species of fish that is critically endangered around Australia.
Kingdom: Animalia Phylum: Chordata Class: Chondrichthyes Order: Lamniformes Family: Odontaspididae
Conservation Status
The Grey Nurse shark has a current conservation status of endangered in Queensland and critically endangered throughout all of Australia. Since 1996 the grey nurse shark has been protected nationally, and is listed in two different populations. It is believed that there are
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Behind the pelvic fin is where you can recognise if the shark is male or female, as the males have claspers and the females have no claspers. Grey Nurse Sharks are distinctively grey-brown on top and sometimes have reddish or brownish spots that have not completely faded from when they were pups, or young sharks.
Males and Females
Male grey nurse sharks mature at 2.1 meters in 4 to 6 years and the females mature at 2.2 meters at 6 to 8 years. The maximum length any grey nurse shark can get to is 3.6 meters, with a maximum age of 15 years. Male sharks have claspers and females do not. This helps distinguish the difference between the genders of the grey nurse shark.
Habitat
Grey Nurse Sharks tend to live in shallow coastal waters with tropical to moderate temperatures. They live in the marine ecosystem and are usually found near drop offs, caves and sandy bottomed gutters. The marine ecosystem provides a home for the grey nurse shark and if any changes occur to the habitat of the grey nurse shark, it can result in loss of population as they rely on the stability to keep them
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They generally feed throughout the night when they are more active and other animals are sleeping. The grey nurse shark is at the top of the food chain and food web, as nothing eats it.
Abiotic and Biotic Factors
An abiotic factor that affects the grey nurse shark is the pollution that is found in the water. In the figure 4 the shark has been caught in an elastic chord which was placed in the ocean or waterways that lead to the ocean. This has caused the grey nurse shark to be in discomfort, and could potentially die. A biotic factor that affects the population of the grey nurse shark are humans fishing and accidentally catching a grey nurse shark temperature change.
Main threats to existence
As the grey nurse shark is protected nationally, there are undergoing limited numbers of threats. Potential threats to the species include pollution, collection for public aquariums, diseases from changes in their ecosystem. Climate change causes a number of threats, including a change in water temperature and changes through the marine ecosystem. Commercial fishing, accidental, incidental or illegal fishing is a threat to the population of the grey nurse shark. A slight change to the sharks habitat can overall cause loss of numbers throughout the shark
Low oxygen consumption rates were reported in this study, most likely due to the low standard metabolic rates of the nurse sharks. Nurse sharks also had a lower routine metabolic rate compared to other species, which was attributed to their slower swimming speeds. Metabolic rate increased with temperature. The cost of transport was lower than is found in other species. This was attributed to the nurse sharks inactivity and less streamlined body.
One of the governments main reasons for culling the sharks is because they are coming in too close to the shores and becoming a potential threat to swimmers. But why is this happening? This is due to a change in shark feeding habits, but because they are eating more human of course not! Rather because us humans are over fishing and eliminating the fish/food sources of which sharks normally feed on. This is forcing sharks to come in closer to find food. Us as humans have forced sharks to come in closer and are now killing sharks because of our a...
The Kingdom, Phylum, Class, Order, Family, Genus and species for the Bull Shark are as follows: Animalia, Chordata, Chondrichthyes, Carcharhiniformes, Carcharhinidae leucas (Simpfender & Burgess). The taxonomy of every living thing is different, so the classification of the Bull Shark is the one way worldwide to know exactly what animal is being referred to because one animal may have many different common names. Carcharhinus leucas is referred to by many different common names around the world for example the spanish it Tiburon Sarda, the french call it Requin Bouledogue, in Africa they refer to it as Van Rooyen's Shark, in Australia it is referred to as the Swan River Whaler, and that is only a few of the Bull Sharks many common names (Curtis).
Narwhals are not endangered, but they are nearly threatened. During the spring, summer, and fall Narwhals are hunted the most. Narwhals are also considered as the animal most threatened by climate change (Felsinger, 2008). With Narwhals being sea creatures, it would give them greater risks for becoming endangered and threatened. Narwhals are also threatened by the industries on the waters, like the oil, gas productions, and commercial fishing. By means of hunters, weather changes, other sea creatures, and even being close to populated areas, Narwhals face greater chances of being harmed or killed.
The Carcharhinus leucas commonly called the "bull shark" is a very unique shark. The bull shark can live in both salt water and fresh water but is commonly found along the Mississippi River and around Nicaragua. The bull sharks has a very blunt rounded nose giving it a bullish type of appearance thus giving it the name bull shark. The sharks are a dark black to a light grey with a white underbelly. Bull sharks can grow to be about 350 cm long and weigh around 230 kilograms. Bull sharks also tend to have smaller eyes compared to many other sharks which indicates that the bull sharks have limited vision. The bull sharks have triangular teeth like the great white shark (one of the bull sharks cousins). The bulls teeth are heavily serrated and are about 1.5 inches long which makes it easy to tear apart the flesh of their prey.
To begin with, the influence of consuming shark fin is from unverifiable beliefs while this is academically proven that sharks have neurotoxins. There are many beliefs that become proven later in the later generation, but shark fin eating is yet not one of these. Conversely, instead of finding more nutrition values in sharks, a research found that shark, which some species could have 50 years or more average lifetimes, containing a large amount of poison from eating toxin-laden fish within their bodies along their lives. To illustrate, pregnant women are especially warned not to consume shark meat as mercury could cause dangerous neurological impacts on fetuses(Xu, 2013). The other types of toxin shown in a recent study by Deborah C. Mash, a researcher at the University of Miami, that 79% of shark fins high level of BMAA or Beta-methylamino-L-alanine, a harmful neurotoxin which could lead into higher risk of Alzheimer’s and other diseas...
The great white shark is a very interesting animal. They get their names from their appearance. The great white shark is very big and has a blue stomach. The great white shark can be found in the pacific, Atlantic and Indian oceans. The number of great white sharks in the United States and in the world is unknown because it is too hard to keep track of all of them. They live in salt water and do not claim territories.
In addition to Western Australia’s targeted species being Great White sharks, Tiger Sharks and Bull Sharks, the QSCP contains a variety of additional target species, some of which have never been
Countless marine animals have been taken away from their right full ocean homes and placed in touch tanks.When the animals reach to aquariums, they do not arrive with their family members, which can make the animals feel stressful and lonely. This matter can cause the animals to not eat food and will make dead.When this happens they might have a virus or foreign bacteria.At the Calgary's aquarium 50 bamboo sharks have serious unknown bacteria because of this situation.This problem can also start to make the animals feel angry and attack people or other animals that are surrounded by the marine animal.That is because of stress, Ripley's with not being with their family member.At the ToRipley's aquarium, five bamboo sharks bit two employees
...rs” the reef and prevents light that is necessary to the coral’s survival from reaching the reef (48). Another major environmental threat to coral reefs is pollution. Pollution can come from a wide array of sources and have a variety of adverse effects on coral reefs. Some common pollutants of coral reefs include sewage, silt, urban and industrial waste, oil, fertilizer runoff, pesticides and other chemicals. Common effects of these pollutants include overgrowth of algae and poisoning of the plants and animals within the reef (DuTemple, 45).
Well if you happen to have no idea or clue as into what I’m talking about, which I seriously doubt that’s would be the case. Ever saw the movie Jaws and all of the subsequent directed by Steven Spielberg, then you definitely have a great picture of what the Great Whites are and what they are capable of doing to a human and other sea animal, this also label them one of the most dangerous wild life. The Great White also goes by these other names White Pointer or White Death is from a large species of lamniform shark. If you ever trying to locate on...
’’They are gray-brown to olive-green on top with off-white undersides,and they have heavily serrated,triangular teeth’’(National Geographic ‘’Hammerhead Sharks’’ 1).These are the usual colors of sharks. When you visualize a shark,the shark you would see would most likely resemble a bull shark. ’’They they almost resemble tiger sharks,and the problem is that tiger sharks are even more dangerous than bull sharks. To be honest,if you have to be extremely afraid of one species of shark,then it would probably be the bull shark. ’’Among the most likely sharks to attack humans,bull sharks favor shallow coastal waters-the same places humans prefer to swim’’(National Geographic ‘’Bull Shark’’ 1).This means that the bull shark would be the most feared by humans because they swim in the same places that humans swim.
Great white Sharks are unique beautiful creatures of the ocean. Sharks have survived in the ocean for 450 million years. The scientific name for Great whites is
Most people think that sharks are large, fast-swimmers, and savage predators. This is true of some species and groups should be interested of the appealing aspects of biology found within it: all sharks have an excellent sense of smell; some can detect electrical discharges; some sharks give birth to one of the
One particularly interesting sea creature is the whale shark, formally known as Rhincondon typus it was first discovered in 1828 by Andrew Smith (Rowat 2012). This large fish is found globally in warm tropical oceans and prefers to stay within 200 meters of the ocean’s surface in waters ranging from 4.2 to 28.7 degrees Celsius (Stevens 2006). This creature can be found all across the globe in any warm tropical seas. Aggregations of whale sharks have been seen off the coast of Australia at times, although it is primarily a creature of solitude. Whale sharks are filter feeders that consume plankton as well as small fish and are harmless to humans. The whale shark is a species with a fascinating ecology, life history, behavior, anatomy