上海海洋大学学报2011，Vol.20Issue(2)：275-283,9.
印度洋中国大眼金枪鱼延绳钓渔业CPUE标准化
CPUE standardization of Chinese longline fishery for targeting bigeye tuna,Thunnus obesus in the Indian Ocean
摘要
Abstract
Generalized Linear Models (GLM) and Generalized Additive Models (GAM) were used to standardize catch per unit fishing effort (CPUE) of Chinese bigeye tuna ( Thunnus obesus) fishery in the Indian Ocean.In CPUE standardization, nominal CPUE was treated as the dependent variable and three groups of affected variables were considered: spatial variables (longitude and latitude), temporal variables (year and month) and environmental variables (temperature at various depths, salinity at various depths and Sea Level Height).The results indicated that the standardized and nominal CPUEs were similar and showed the same trends in spatio-temporal distribution.The CPUE increased with year and high CPUE usually occurred in 42°E -60°E, 85°E -90°E, 15°S -5°S and 10°N - 15°N.Both the results of GLM and GAM showed that the longitude was the most important variable affecting CPUE, which could explain 17.3％ and 23.81％ of the deviance, respectively.The effects of latitude, the interaction terms of longitude and latitude,year, temperature at 317 m depth and temperature at 381 m depth on CPUE were also apparent.GLM tended to be more appropriate than GAM in the analysis of CPUE standardization in this study.关键词
CPUE标准化/GAM/GLM/印度洋/大眼金枪龟分类
农业科技引用本文复制引用
戴小杰,马超,田思泉..印度洋中国大眼金枪鱼延绳钓渔业CPUE标准化[J].上海海洋大学学报,2011,20(2):275-283,9.基金项目
农业部三大洋金枪鱼观察员项目(08-54) （08-54）
上海市重点捕捞学科建设项目(S30702) （S30702）
