抓大放小？抓小放大？ - 釣魚
By Erin
at 2020-03-22T20:45
at 2020-03-22T20:45
Table of Contents
各位好...
一直以來我在想一個問題：所謂捉大放小是正確的保育嗎？
如果是把有繁殖力的成魚抓走很多，剩下中小型魚還沒辦法繁衍，
那麼 整個族群的生產力不是影響很大嗎？
如果說像吳郭魚、台灣的小型溪魚這種早熟魚類，那捉走大尾或小尾其實差別不大
因為性成熟時間只要一年。三四個月後就會有一大批亞成魚成熟。
但如果像黑鮪魚這種好幾年才能成熟產卵的大魚，是不是應該推廣捉小放大?
像是前面說的，假設五年才能成熟繁殖，結果大部分五年以上的都被抓去吃，
剩下的小魚又要等個幾年...那不是不如捉中小型來吃，大的長期讓牠們繁殖？
歡迎討論~~
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