Length Selectivity of Fish Traps for Puffer.
Length Selectivity of Fish Traps for Puffer.
复制标题
河豚鱼陷阱的长度选择性。
DOI：
10.2331/suisan.62.727
复制
发表时间：
1996
影响因子：
0.4
通讯作者：
T. Imai
中科院分区：
文献类型：
--
作者：
S. Fuwa;M. Ishizaki;Kensuke Yamaguchi;T. Imai
The relation between the construction of the trap for the Puffer fish and the fishing mechanism that it has was investigated. The relative efficiency of the trap was calculated with both the data of the trap width and the catch of fish. The calculated selectivity of the trap was compared with that estimated by the probability model for the Puffer trap fishery, taking into account the fish turning motion in a trap entrance. The obtained length selectivity for the puffer Lagocephalus wheeleri approximately agreed with the theoretical values. The length selectivity of the trap of the puffer Lagocephalus gloveri showed higher values than the theoretical values. The selectivity of the trap calculated on the probability model seemed to be influenced by the length of the Puffer fish.We confirmed that the fishing mechanism of the trap for the Puffer fish depends on the behaviour of the fish inside of the trap entrance, but the behaviour of the fish seem not to be necessary uniform.
