Research Paper On Bluefin Tna

Blue buffalo Do you really know what you're feeding your cat or dog ? have u ever really looked at the ingredients and not just the cute packaging ? We treat our pets like family and you want to feed them the best that's why you should feed your cat or dog blue buffalo. Most cats and dogs are not getting the nutrition they need from their average cat or dog food. A lot of the products contain things that don't benefit them in any way.

Fish Left In The Wild When capturing fish, large adult blue tangs of breeding age and size are usually left in the wild (Adams, 2016). This is because the younger and smaller specimens are generally more desirable for aquarium pets (Adams, 2016). Since the fish that are capable of breeding are left in the wild, they are able to produce more blue tangs. This means that the source of these fish is renewable in some capacity. It is also found that where aquarium fish are captured are only a small portion of the locations where the blue tang inhabits. This means that many native blue tangs will not see the inside of an aquarium (Adams, 2016).

The Effect of Over Hunting on Blue Whales The blue whale is a magnificent creature being the biggest in the world. The blue whale can eat up to 4 tons of krill in one day, and live up to 90 years old. Blue whales can make sounds and tones that travel up to 1000 miles away. Blue whales are so big and take up so many resources that have to live in small groups of one or two called pods. The Blue whales habitat ranges between Madagascar and Antarctica. In 1904 there used to be close to 400,000 blue whales living on earth, but now due to over hunting people have put the human race in danger along with the blue whale species.

The allusive bluefin tuna is one of the largest, fastest and highly sought after fish in the wild sea. The Bluefin tuna can weigh over half a ton, grow to over four metres in length, and dive to depths of 1,000 metres. They can reach speeds of 70 miles an hour and even raise their body temperature far above that of the surrounding water in order to traverse arctic waters. They are among the most ambitiously migratory of all fish, with some tagged bluefin being tracked swimming from North American to European waters several times a year. The bluefin tuna is unique, a perfectly adapted products of evolution. They are also dangerously close to becoming extinct (Brown). Today, the bluefin tuna has been fished out by 97 percent from pre-fishing

It is not educational. Teaching adults and children to dump five tonnes of critically endangered southern Bluefin tuna into cage should not be considered as educational [2, Pge 1]. Since the tuna are going to be handfed and constantly in contact with humans they will not display

Atlantic Bluefin Tuna 100,000. This number might seem large, but with 96.4% of the population declining after fisherman started hunting for these animals, the coveted fish might not be around for much longer. The Thunnus SPP, or better known as the Atlantic Bluefin Tuna, is one of the largest bony fish in the world. At one and a half Mr. Zunic’s in height and 200 bags of potatoes in weight (6-10 feet, 1500 pounds according to animalplanet.com), the Atlantic Bluefin Tuna is almost invincible, to predators in the fish class of vertebrates that is. The Atlantic Bluefin Tuna is critically endangered due to overfishing. One fish was once sold for $1.76 million due to the fish’s delicy. The Atlantic Bluefin Tuna is highly popular at high-end restaurants around the world. Boy, a tuna roll sure does sound great right about now.

Sharks, varying in size, are widely located around the world. The longest shark, the Whale Shark, spans 60 feet long and can weigh up to 70 tons. These sharks are not dangerous to humans because they are filter feeders. Usually, a female shark gives birth to around 10 pups at a time. While she nurses the pups, she keeps them in the shallow water to protect them from male sharks who eat baby pups. Sharks are generally not friendly to humans. They can detect one sole drop of blood in more than a million gallons of water. ⅔ of the shark's brain is given over to interpreting blood. Once they smell the blood, the sharks go into a crazy frenzy, where their teeth are pushed out and jaws open wide. The great white shark is probably the most deadly

Bluefin Tuna are so popular, that one man in japan bought one of the fish at an aution for over 35,000 dollars! He aparently bought one just two years prior for over a million dollars (Graif). Japan is also the leading Bluefin Tuna fishing country, with over 80 percent of the bluefin fishing market in its pocket (Smith). Think of how much its economy must rely on the Bluefin! In 2010, Japan even refused to join in on the ban on international trading of the Bluefin, thus ignoring the ban altogether (Jolly). Japan is also the leading importer of fish, making over 14 billion dollars with just importing fish

Tuna that go by the scientific name of Thunnus Maccoyii (Dennis. M et.al, 2010) are one of the most valuable finfish cultured within Australian and most sought after for sushi within Japan. The waters generally out from Port Lincoln within Spencer Gulf, South Australia are where the tuna are mainly cultured in Australia due to the water temperature being ideal for the culture of these highly valued finfish. Tuna is within the top four of the most valuable cultured aquatic species in Australia especially Southern Bluefin Tuna (SBT) which are valued at four hundred dollars per fish making the transport and capture of these fish very important where damage is avoided at all costs. The transport of the captured fish from the wild in nets back into shallower water where they can then participate in the ranching stage can lead to serious problems and can bring upon mortalities if done incorrectly. Ranching is the process of temporally holding wild fish at sea to fatten them on baitfish. (Kirchoff. N et. al 2011 pg1) This process of transportation from the wild back into the grow out pontoons or cages for ranching can lead to effects on a fish’s health, performance and or even disease and parasite infection.

Blue Whales are endangered and their numbers are slowly going up but it doesn’t mean that they are also getting killed. This animal is found North Pacific, Pacific Ocean, and the Indian Ocean. The blue whale is currently endangered, and it weighs approximately 300,000 pounds or 150 tons! The blue whale is carnivorous and it can eat about 8,000 pounds of krill a day. The blue whale’s life span can be up to 80 to 110 years pretty similar to humans. The blue whale can be up to 100 feet long but they are usually are 60-80 feet long. When baby blue whales are born they are usually 20-25 feet long and can drink up as much as 200 pounds of milk a day. The blue whale is the biggest animal to have ever live on earth. The baby blue whale can be dependant

“A single Pacific bluefin tuna sells at auction for more than $100,000” (Arnold, 2012). The Pacific bluefin tuna is one of the most popular fish consumed in the world eaten mainly in sushi. In 2010 alone, the United States consumed twenty-four percent of the tuna consumed by the entire population. Due to its increasing growth in popularity the demand for wild bluefin tuna has caused the species to drastically decline to about 2 percent of its original percent population causing it to become endangered. Due to the drop in the amount of wild bluefin tuna left there have been serious changes to the ocean’s ecosystem. The Pacific blue fin tuna is one of the top predators in the pacific oceans food chain making it a tertiary consumer. For them to survive it must feed on the Ocean’s secondary consumers which are the anchovies, herring, etc.

The issue with delphinids contrary to dolphins, once they are caught in purse seine nets with yellowphin tuna, they cannot escape it and therefore die. Although this issue what happening as early as in the 1950’s, it only started getting monitored in the 1970’s. for the many years when it was happening, the annual mortalities were around 200-500, 000. Even with the new monitoring, many dolphins are continuously being killed through this fishing technique. Thanks to dolphin safe labels and movement, there has been great improvement on this practice. This improvement has led to a reduction of dolphin mortalities to less than 1500 per year in 2004. Unfortunately, even with this progress, dolphins and the other marine mammals affected are struggling to repopulate because of how affected the species were from all the previous years but also since large-scale captures are still going on.

It prefers relatively cool waters between 7 and 16 °C with an epipelagic distribution from the surface to at least 350m (Compagno 2001, Ebert and Stehmann 2013). Following a great interest in the study of this shark’s ecology, during the last decades mark-recaptured and tagging studies have documented that blue sharks use currents as the Gulf Stream and the Atlantic North Equatorial Current to perform regular trans-Atlantic migrations, generally showing sexual segregation in their populations. The North-eastern Atlantic population consists primarily of immature individuals, while adult males occupy more western NA Latitudes and adult females migrate to southern tropical latitudes upon reaching maturity (Queiroz et al. 2005, Ebert and Stehmann 2013, Vandeperre et al. 2014). Catalogued as “Near Threatened” by the IUCN Red List (Stevens 2009), blue shark populations are severely exploited by oceanic longline fleets operating worldwide due to its commercial interest of meat and fins, comprising at least the 17% of the overall fin market (Buencuerpo et al. 1998, Baum et al. 2003, Clarke et al. 2006). Moreover, as a result of the current lack of international limit on catch, the annual global catch of blue sharks is

Throughout the research the most useful source was, Population Dynamics of Western Atlantic Bluefin Tuna: Modeling the Impacts of Fishing using Differential Equations. The source was the most useful because of the connections that was shown between population models and mathematics. The reliability was judged to be high because of the authors Esther Bowen, Marie Hoerner, and Cassie Kontur. The information stated was backed up by other sources and judged to be accurate. Lastly the information displayed was up to date and on topic.

The Atlantic bluefin tuna, Thunnus thynnus, is a predatory fish that hunts such as mackerel (worldwildlife.org, n.d.) using its fast speed and sharp eyesight (marinebio.org, 2013). Found around the Atlantic, the Atlantic bluefin tuna when fully grown reaches lengths anywhere from half a meter to three meters in length (marinebio.org, 2013) and weigh in anywhere from 100 kilograms to 680 kilograms(marinebio.org, 2013). These measurements make the Atlantic bluefin tuna the largest type of tuna in the world (worldwildlife.org, n.d.). Unlike the smaller Southern and Pacific varieties of the bluefin tuna, the Atlantic Bluefin tuna is endangered (Block, et al, 2001).