Size selectivity of trap for male red queen crab Chionoecetes japonicus with the extended SELECT model.
Size selectivity of trap for male red queen crab Chionoecetes japonicus with the extended SELECT model.
复制标题
扩展 SELECT 模型对雄性红蟹捕集器的尺寸选择性
DOI：
10.1046/j.1444-2906.2000.00079.x
复制
发表时间：
2000
影响因子：
1.9
通讯作者：
T. Tokai
中科院分区：
文献类型：
--
作者：
Eui;Chang–Doo Park;Seong;Ju;T. Tokai
总结：
1997年，在韩国东海岸的沃茨进行了一系列比较捕捞试验，使用6种不同网目尺寸（95、112、122、132、152和172 mm网目开口）的诱捕器，以确定锥形诱捕器对雄性红皇后蟹Chionoeclampus的尺寸选择性。应用扩展的SELECT（Share Each Length's Catch Total）分析方法，结合捕捞努力量数据，获得了诱捕器大小选择性，并采用对称逻辑斯谛方程表示选择性曲线。在分析中采用95 mm筛孔尺寸的捕集器作为控制齿轮。采用最大似然法计算SELECT模型中各筛孔尺寸捕集器的Logistic和分裂参数。通过似然比检验和赤池信息准则（AIC）比较，选择了等捕捞效率的分裂参数p固定模型。从确定的逻辑参数，甲宽度的50%保留估计为82，85，92，和101毫米，分别为122，132，152，和172毫米网眼大小的陷阱。各网目尺寸诱捕器的选择性曲线表明，较大网目尺寸的诱捕器允许更多的甲壳宽度小和商业价值低的螃蟹逃脱。
SUMMARY:
A series of comparative fishing experiments was carried out in waters off the east coast of Korea in 1997, using traps of six different mesh sizes (95, 112, 122, 132, 152, and 172 mm mesh opening) to determine the size selectivity of a conical trap for male red queen crab, Chionoecetes japonicus. The extended SELECT (Share Each LEngth’s Catch Total) analysis method was applied with fishing effort data to obtain trap size selectivity, with a symmetric logistic equation used to express selectivity curves. Traps of 95 mm mesh size were employed as the control gear in the analysis. Logistic and split parameters of each mesh-size trap in the SELECT model were calculated by the maximum likelihood method. The model of split parameter p fixed with equal fishing efficiency, was chosen from the likelihood ratio tests and Akaike’s Information Criterion (AIC) comparison. From the determined logistic parameters, the carapace widths of 50% retention were estimated to be 82, 85, 92, and 101 mm for 122, 132, 152, and 172 mm mesh-size traps, respectively. The selectivity curves of each mesh-size trap showed that traps of larger mesh size allowed more crabs of small carapace width and low commercial value to escape.