这样便可保护当地的繁殖种群，也就是说可维持充沛和稳定的捕获量。

This way local breeding stocks are preserved, meaning that fish catches should remain abundant and stable.

这决定了这艘船在全国范围内，捕捞那种鱼的被允许的总捕获量的份额。

This settles the boat's share of the total allowable catch of that fish for the entire country.

在2000年期间，阿拉斯加的太平洋鲑鱼商业捕获量超过32万吨，出舱价值超过2.6亿美元。

During 2000, commercial catches of Pacific salmon in Alaska exceeded 320,000 tonnes, with an ex-vessel value of over USD 260 million.