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【识蓝双语】一起来认识黄鳍金枪鱼

无境深蓝BetterBlue2018-10-04 12:54:08

本文整理于:Greenpeace

图片来源于网络


Yellowfin tuna are named for their bright yellow finlets, and dorsal and anal fins. This large tuna species can be black, dark blue or greenish on top with a yellow or silver belly.

黄鳍金枪鱼因其明亮的黄色鱼翅,背鳍和肛门鳍而得名。这种大型金枪鱼的背部有黑色的,深蓝的或带一些绿色,腹部是黄色或银色的。



1  

Biology

生物形态


Yellowfin tuna can be found in all tropical and subtropical seas except the Mediterranean. They migrate long distances throughout the year.

除地中海以外,所有热带和亚热带海域都可以找到黄鳍金枪鱼。它们全年迁徙很长距离。



Yellowfin tuna usually measure about 6.8 feet in length and weigh up to 440 pounds.

黄鳍金枪鱼通常长约6.8英尺(相当于2米),重达440磅(相当于200公斤)。



This species forages and feeds on crabs, squid, octopus, shrimp, lobster, and various species of fish. They prey using their sight and compete with many other large fish for food.

该物种以螃蟹、鱿鱼、章鱼、虾、龙虾和各种鱼类为食。它们靠自己的眼力猎食,还与许多其他大型鱼类竞争食物。



Spawning occurs throughout the year with the peak during summer months. After mating, eggs are released into the water and fertilized externally.

全年都可以产卵,但夏季是高峰期。配对成功后,卵子被释放到水中,并在体外受精。


黄鳍金枪鱼宝宝(出生后几天)


Yellowfin tuna are very fast swimmers and can reach speeds of 50 mph by folding their fins into special indentations.

黄鳍金枪鱼游泳速度非常快,它们能将鱼鳍折叠成特殊的凹痕,可以达到每小时50英里的速度(每小时80公里,相当于在高速路上急行的汽车)。


Yellowfin are strong schoolers, often swimming in mixed schools of similarsized species. In the eastern Pacific Ocean, larger yellowfin are often found schooling with dolphins.

黄鳍金枪鱼非常喜欢结群,经常和体型差不多的鱼群一起游泳。在太平洋东部,经常发现体型较大的黄鳍金枪鱼与海豚一起。


Large school of dolphin-sized yellowfin tuna travelling alongside the dolphin pod

体积跟海豚差不多大的黄鳍金枪鱼和海豚一起追逐


Yellowfin tuna usually live for 8 years.

黄鳍金枪鱼通常存活8年。



2  

Threats

生存威胁


Yellowfin have some natural predators including sharks and large bony fish.

黄鳍金枪鱼的天敌包括鲨鱼和大的硬骨鱼。


The most serious threat to yellowfin tuna is the commercial fishery. This species is a popular target and the mode of catch (purse seine) can capture huge schools at a time. In the U.S., yellowfin tuna is one of the primary fish for canned consumption.

商业性捕渔业是对黄鳍金枪鱼最严重的威胁。这一物种是一个渔业较普遍的目标,有的捕捉模式(如拉围网)可以一次性捕捉整个鱼群。在美国,黄鳍金枪鱼是罐头食用的主要鱼类之一。



The tuna fishery has long been controversial for its high rates of dolphin bycatch; however, regulation has improved adverse impacts to dolphins.

金枪鱼渔业长期以来一直因其海豚兼捕率高而引起争议; 然而,一些规定的出台改善了对海豚的不利影响。


Yellowfin are also sport-fished in southern California, Baja, Mexico, Hawaii, and along the southeastern U.S. including the Gulf of Mexico.

在加利福尼亚南部、巴哈、墨西哥、夏威夷和美国东南部海域,包括墨西哥湾,黄鳍金枪鱼也是竞技性海钓的鱼类。



文字|卤蛋花

排版|卤蛋花

校稿|大王叫我来巡海


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