Bluefin_Tuna G

$10.00

Category:

Description

Bluefin_Tuna G

Bluefin Tuna

They have Bule fins

Bluefin is the best species tuna because it is bigger and more expensive

than other species and and it is rarer than Yellow fin

Bluefin Tuna is so big and weigh 150-450 kilograms.

Found in the Atlantic Ocean, Mediterranean and Black Sea.However, they can catch most of it in the Mediterranean.

Atlantic bluefins are homeothermic (“warm-blooded”) and are therefore able to thermoregulate keeping their body temperatures higher than the surrounding water, which is why they are so well adapted to colder waters.

This tuna has a life span of approximately 15 years.

They can dive as deep as 914 m, and are known to swim long distances as they are a highly migratory species.

50 years ago, bluefin tuna are double size from dolphins . It is big lively aquatic animal and It is the most wonderful creatures in the sea. They is called as “king of ocean

They eat a small fish , squid, red crab

Bluefin tuna is very popular in Japan (both fresh and can )but nowadays bluefin tuna is rare because a lot of fishing people until almost

Bluefin tuna is a value fish and the highest requirement in the world .

 It made Bluefin tuna gradually decrease and the size is also smaller than the past that is because of the man- made. The human is the most terrible for creatures.

The human catch it just for selling and eating such as sushi ,sahimi so the amount of bluefin tuna is decreased more than 90% , this is the crisis situation.

Habitat

Bluefin tuna exhibit strong schooling behavior while they are young. While schooling is believed to be sight oriented, schools have been observed at night. Therefore, other senses (particularly the lateral line) appear to be involved in this behavior. Schools of bluefin seasonally migrate northward during the summer months along the coast of Japan and and the Pacific coast of North America. Tagged adult fish have made trans-Pacific migrations: some eastward, and some westward. Other tagging studies have shown that a bluefin can cross the Atlantic in less than 60 days. They can swim at speeds up to 45 mph (72.5 kph).

Importance to Humans

The bluefin is highly valued as a food fish around the world. It is sold fresh or frozen. Quality fish are especially favored in Japan, where they can fetch a high price in the raw seafood market. A single fish can sell for $45,000 USD.

The bluefin tuna is also a popular game fish, especially in the USA, where it is caught by hook and line. In some areas, it is reported that bluefin do not readily take bait. Instead, they will bite only when in mixed schools including albacore or yellowfin. Scientists speculate that the intense feeding activity of these other species may stimulate a feeding response in bluefin tuna.

Conservation

The popularity of this tuna in commercial markets has led to severe exploitation in several areas, most notably in the North Atlantic Ocean. Because bluefin migrate long distances, and because much of the fishery occurs in international waters, international cooperation is necessary in management decisions. The International Commission for the Conservation of Atlantic Tunas was created in 1966 to specifically address the conservation issues facing the bluefin and other highly migratory species. (link to ICCAT) Over twenty nations are now active in this organization, including the US, Canada, Japan, Spain, and France. ICCAT attempts to organize and coordinate international research, and proposes management regulations. Major issues facing the commission are reasonable definitions of management units and development of reliable abundance estimates.

......

Bluefin_Tuna G
Last updated: Feb 2024

Page 1

ets has led to severe exploitation in several areas, most notably in the North Atlantic Ocean. Because bluefin migrate long distances, and because much of the fishery occurs in international waters, international cooperation is necessary in management decisions. The International Commission for the Conservation of Atlantic Tunas was created in 1966 to specifically address the conservation issues facing the bluefin and other highly migratory species. (link to ICCAT) Over twenty nations are now active in this organization, including the US, Canada, Japan, Spain, and France. ICCAT attempts to organize and coordinate international research, and proposes management regulations. Major issues facing the commission are reasonable definitions of management units and development of reliable abundance estimates.

   The extinct

The extinct of the bluefin tuna is towards the fishing activity the new technology is created to get a lot of fish in one time fishing and the international company want to dominate and make a lot of profit from the trade.The law is not enforced effectively and the consumer ignore the feature of fish that they bought.

One of the reason that made them extinct is the process that they lays eggs .That means during autumn and summer when the water became warmer , group of the bluefin tuna will lays eggs at the surface and the people will take the plane and search the position that can observe it easily by the fish s skin that reflect to the sun light and then they will contact to the fishing boat to catch it.    

Blue fin tuna of crisis

ในช่วงเดือนพฤษภาคมของทุกปี จะมีการทำประมงเพื่อไล่ล่า blue fin tuna เกิดขึ้น ท่ามกลางความกังวลขององค์กรอนุรักษ์และหลายฝ่ายที่เกี่ยวข้อง การประมงที่ผิดกฎหมายและการประมงช่วงฤดูผสมพันธุ์และวางไข่ เหล่านี้ล้วนเป็นสาเหตุสำคัญที่เร่งเร้าให้เกิดความเสี่ยงต่อการสูญพันธุ์ของปลาทูน่าครีบน้ำเงินอย่างแน่นอน

นักวิทยาศาสตร์ได้เสนอแนะต่อคณะกรรมาธิการเพื่อการอนุรักษ์ปลาทูน่าในมหาสมุทรแอตแลนติก ( The International Commission for the Conservation of Atlantic Tunas: ICCAT ) ซึ่งจัดสรร โควตา ให้กับประเทศต่างๆในมหาสมุทรแอตแลนติกว่า โควตา การจับปลาทูน่าในปี 2007 ให้เหลือ 15 , 000 ตัน เพื่อป้องกันการลดลงของปลาทูน่าครีบน้ำเงินที่มีอยู่ในท้องทะเล นอกจากนี้การทำประมงจะต้องหยุดในช่วงเดือนพฤษภาคมกรกฎาคมระหว่างที่ปลาทูน่าครีบน้ำเงินผสมพันธุ์และวางไข่ ซึ่งจะจับได้ง่ายมาก เนื่องจากฝูงปลาทูน่าครีบน้ำเงินจะลอยตัวสู่ผิวน้ำเพื่อปล่อยไข่และสเปิร์ม

การใช้เครื่องบินสำรวจและส่งสัญญาณให้กับเรืออวนลากจึงสามารถทำได้อย่างรวดเร็วด้วยการสังเกตจากแถบข้างลำตัวสีเงินสะท้อนกับแสงทองของดวงอาทิตย์ ยิ่งไปกว่านั้นมีการจับปลาทูน่าครีบน้ำเงินจำนวนมากกว่าการจัดสรรตามโควต้าที่ถูกต้องตามกฎหมาย นักวิทยาศาสตร์ประมาณการว่าการจับปลาทูน่าครีบน้ำเงินซึ่งละเมิดกฎหมายนั้นเพิ่มขึ้นอย่างน้อย 50 , 000…

...

Bluefin_Tuna G
Last updated: Feb 2024

Page 2

You've reached the end of your free preview.

Want to read all pages?