Sharks are one of the most endangered species in Australia, and it’s our responsibility to help
protect these sharks from being over-fished. Many fishing markets fish sharks but deteriorate
physical features that help with distinguishing sharks and is very difficult to differentiate between
them, since they are produced the same way- as fish and chips. In this experiment DNA samples
have been taken from sharks from the NSW Shark Meshing Program. The DNA was extracted
and amplified for the production of a DNA sequence in order to obtain the species of shark and
determine its endangerment. Many of the shark species were of Carcharhinus genus and an
outstanding 53% were a part of the endangered list. Sharks have large fins which make it valuable
and they are being increasingly targeted in some areas in response to increasing demand for the fin
trade. This strongly suggests that conventions need to be more effective in protecting endangered
species.
INTRODUCTION:
Sharks have been vulnerable through the unregulated fishing that goes on with the increase in the
fish market (Punt, 2000). The numbers in sharks have decreased due to the unregulated fishing
and also that sharks are K-selected which is they don’t produce as many young and have a late
maturity age, and has caused many shark species to be endangered (Myers et al.2007). Conventions
have been put into place such as The Convention on International Trade in Endangered Species of
Wild Fauna and Flora (CITES) which prevents the trade of endangered species; however it is often
very difficult to distinguish between sharks and to know which one is endangered and which ones
are not. ‘This is specifically evident in the case of shark fins where the phy...
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...A samples had a separation of macromolecules based on the size and charge DNA.
Figure 2: the image of the gel electrophoresis of the shark DNA samples obtained.
Figure 2 has demonstrated clearly that there has been separation depending on size and charge of
each sample, which is represented by the different shades of the colour. Each band is representing
a band of DNA, and this image tells us that there is a good amount of DNA in order for DNA
amplification.
DNA amplification produced the DNA sequence, the sequence is important in the identification of
the shark species using the barcode for life program. All shark samples were identified and varied a
lot more than what was hypothesised. It included the bull shark, dusky shark, blue shark, tiger shark,
the great white, the short fin mako shark, angel shark, blacktip shark and the hammerhead shark.
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
Every year, there are about 100 million Sharks killed, ultimately for its commercial success. Their fins are used as the main ingredient for a dish so-called Shark soup. However, many are unaware of the actual importance of Sharks' existence on Earth. They do a number of things to control and balance aquatic life down below, which in return affects how we live on the surface. Sharks have existed in our world for over 400 million years, if they were to suddenly disappear for industrial purposes, much problems will be encountered throughout the world. We must preserve the lives of Sharks, for many reasons most importantly that shark hunting is morally wrong, it may provide economic failure in a given time, and it may serve a critical unbalance of a healthy environmental state.
’’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.
Sharks have also been subjected to medical research, games and competitions, jewellery, souvenirs and cosmetics. We need to take into consideration that sharks play a vital role in the natural world that we live in. it is imperative that we look after these majestic creatures and ensure they remain protected. We need to be aware of the dangers of sharks, swim in protected areas where there are shark nets, and do not swim after dark in the sea (especially not alone) as the sea is the sharks home. Humans should also be wearing wet suits as protection in the ocean. The sea is where they live, they swim freely and they eat – they do not particularly target humans but rather prey on food that is available to them in their habitat.
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.
Shark slaughter has led to shark populations being rapidly decimated all around the globe. Fishermen report that sharks are also getting smaller because they are not being given enough time to fully mature. Although there are other fish that are targeted more than sharks, they are not exactly affected by the kind of endangerment that sharks are currently experiencin...
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
Information (sub-point): Shark finning also has also drastically negatively affected the entire shark population. According to SharkSavers.org, “Shark populations face the threat of extinction in every part of the world primarily due to overfishing driven by the high demand for shark fins” (SharkSavers, 2013). It is also found that the global shark population has decreased by a drastic 90% over the last 50 years, and if change does not occur quickly, the entire shark population could potentially disappear
"Home - Shark Research Institute." Shark Research Institute. N.p., n.d. Web. 04 Jan. 2014. .
Thesis: Sharks should be conserved because they are an important part of the ocean, attacks are often incidental, and human behavior influences the behavior of sharks.
Torres states they environment they live in,biology,height,and weight. There are marine ofcourse, in deep water in 34s-47s,deep range 25-950m,usually 100 -600m. They feed on shellfish,worms,small fish and crustacean it’s what they feed them self with. Their length could be up to 96.0 cm it’s a common length,55.0cm tall it’s also a common height. Ghost sharks are usually in New Zealand and Australia . The author conclusion Ghost sharks are a very stable sharks that live in the deep sea,go for easier pray and it’s common pray.
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
Studies suggest that a “live shark, over the course of its lifetime, is worth $1.6 million, which is a great deal higher than the $200 the dead shark can sell for” (Fairclough). This statement holds true because of shark ecotourism, or shark-related activities such as shark viewing, is an industry that is expanding rapidly. If people would instead invest in shark ecotourism rather than shark fisheries, business would be far more profitable: “Shark ecotourism currently generates more than $314 million worldwide and is expected grow to $780 million in the next 20 years” (McGuire). For example, “a single whale shark fin can fetch up to $15,000 in some Asian markets,” but in stark contrast, the annual profit made worldwide from whale shark viewing "brings in an estimated $47.5 million” (Williams). When compared whether shark finning or shark tourism reap more profit from an economic standpoint, then it is clear that a live shark is more valuable than its fins. Furthermore, both industry and sharks alike would benefit from shark ecotourism, without the damage caused by shark finning
Contrary to popular belief, sharks do get cancer but it doesn’t happen easily. Scientists must somehow make sense of the shark’s rather substandard immune capacity. One possibility could be that sharks do not require the same immune system functions humans do in order to
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