關於抓大放小 - 釣魚
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By Ophelia
at 2010-09-29T17:21
at 2010-09-29T17:21
Table of Contents
之前往往看到有人釣黑格
不到三指大的就抓回家 而且還是帶一整個冰箱
看了都很替魚心疼
也感嘆台灣沿海的資源就這樣被消耗殆盡
但是那天看了探索頻道提出的新論點
關於抓大放小 以往都認為是對的
但提出了新的觀點
1.魚要長到具有繁殖能力大小 往往要好幾年 放掉具有繁殖能力的大魚(尤其母魚)
比放了上千條小魚有用
2.大魚能在環境中長大 表示其適應環境的能力強 放掉此種基因的魚種幫助繁殖
對生態有幫助
3.研究顯示 搶食魚餌的魚通常是群體中積極爭食的 也較能抵抗環境變化
就如戰爭中 往往殺掉小孩 留下婦女 因為對族群延續較有益處
放掉一堆小孩 其實能長到大的也不多 不如放掉大魚實在
所以是不是放掉大魚抓一堆小魚反而有用阿~~(菸)
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Tags:
釣魚
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