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There are 150 tonnes of fish in this one haul. It used to take a fishing vessel one whole year to catch this many fish. These are mostly yellowfin tuna, plus some skipjack. As they' re slower breeders than skipjack, many yellowfin are caught before they' re old enough to breed. This makes them more vulnerable to overfishing. Tuna fishing has grown into an 8billiondollar industry. And over 4 million tonnes of tuna are caught worldwide each year, a fourfold increase in as many decades. Almost 2 3 of the catch now comes from the Pacific. In the Atlantic, yellowfin catches have been shrinking since 1990. Now a similar decline has begun in the Pacific. Tuna need to swim constantly to keep water flowing over their gills, otherwise they can' t breathe. The fishermen want to get them out of the water as quickly as possible. When starved of oxygen, a buildup of lactic acid in their muscles causes the quality of their meat to deteriorate. |
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zhè yī pī yú huò gòng yǒu 150 dūn, xiāng dāng yú zǎo qī měi sōu yú chuán yī nián de yú huò liàng. zhè lǐ miàn duō shù shì huáng qí wěi niàn wě i , jīn qiāng yú de yī zhǒng hé jiān yú. yīn qí fán zhí sù dù jiào jiān yú màn, suǒ yǐ bǔ dào de huáng qí wěi duō wèi chéng shú. zhè dǎo zhì tā men gèng róng yì yīn làn bǔ ér ruì jiǎn. bǔ lāo jīn qiāng yú yǐ fā zhǎn chéng wéi yī xiàng chǎn zhí dá 80 yì de chǎn yè. quán qiú měi nián de jīn qiāng yú bǔ huò liàng chāo guò sì bǎi wàn dūn, jǐ shí nián lái yú huò liàng zēng jiā le sì bèi. qí zhōng jìn sān fēn zhī èr lái zì tài píng yáng. dà xī yáng de huáng qí wěi chǎn liàng zì 1990 nián kāi shǐ jiǎn shǎo. xiàn zài tài píng yáng de yú huò liàng yě chéng xiàn chū lèi sì de xià jiàng qū shì. jīn qiāng yú bì xū bù duàn yóu dòng, ràng shuǐ liú guò yú sāi, fǒu zé tā men jiù wú fǎ hū xī. yú mín yào jǐn kuài bǎ tā men nòng chū shuǐ miàn. rú guǒ quē yǎng guò jiǔ, jīn qiāng yú jī ròu nèi bù xíng chéng de rǔ suān huì shǐ ròu zhì biàn chà. |