一种资源保护型蟹笼的初步试验

PRELIMINARY TESTS ON A KIND OF CRAB POT FOR PROTECTING RESOURCES

任何新渔具渔法的开发,必须同时考虑到资源保护。针对笼捕梭子蟹作业开发和推广过程中出现的蟹笼网目较小、幼蟹渔获率高等弊病,在梭子蟹入笼机制、行为习性观察基础上设计制作了资源保护(幼蟹释放)型蟹笼,并进行多次试验。结果认为,蟹笼拟选择安装每只直径8cm的幼蟹释放孔装置方式,达到保护梭子蟹资源目的。

The development of any new gear and fishing methods must be taken the conservation of resources into consideration. On the basis of the shortage of pot mesh smaller in size and higher in catching rate of juvenile crabs, the mechanism of crab entering the pots and the experimental observations of pot for catching swimming crab, a kind of crab pot for protecting resources was designed and carried out trial for serveral times. The result shows that th pot fitted with an aperture 8 cm in diameter for releasing juvenvile crab can achieve the purpose of conservation of stocks.