Catch per unit effort (CPUE) standardization of purpleback flying squid Sthenoteuthis oualaniensis for Chinese large-scale lighting net fishery in the open sea of South China Sea
1.South China Sea Fisheries Research Institute, Chinese Academy of Fishery Sciences, Guangzhou; 2.College of Marine Sciences, Shanghai Ocean University, Shanghai; 3.Key Laboratory of South China Overseas Fisheries Exploration, Ministry of Agriculture and Rural Affairs, Guangzhou
Abstract: Catch per unit effort(CPUE) of purpleback flying squid Sthenoteuthisoualaniensis were standardized based on the data of large-scale lighting net fishing vessels from 2013 to 2017 by generalized linear model (GLM) and generalized additive model (GAM) in R language combining with spatial-temporal factors and marine environmental factors to use the CPUE to assess the abundance of purpleback flying squid resources fully, and understand the relationship between the resource distribution and spatial-temporal factors and marine environmental factors. The results showed that there were 7 important variables including month, sea surface temperature, sea surface height, chlorophyll a, longitude, year and latitude impacting on CPUE through GLM model. The GAM model containing these seven factors as the best model had the minimal AIC value, with CPUE deviation interpretation rate of 36.68%, the high CPUE in the sea surface temperature of 26.0-30.5 ℃ from March to May, the sea surface level of 0.60-0.75 m, and the chlorophyll concentration of 0.06-0.13 mg/m3. The findings indicate that the CPUE standardization on large-scale lighting nets of purpleback flying squid on the open sea of South China Sea based on the GLM model and the GAM model better reflect the abundance changes in the squid resources.
基金资助: 2019省级促进经济发展专项资金项目(粤农2019A3)；南沙渔业管理项目(02-20181005);广东省渔业资源数据采集与分析系统建设及运维项目(GPCGD PC 171198FG149F);南海灯光诱捕渔业信息服务集成技术研究课题(2019CY04);农业农村部外海渔业开发重点实验室2018年度开放基金课题(LOF 2018-05)
引用本文:
谢恩阁, 周艳波, 冯菲, 吴洽儿. 中国南海外海鸢乌贼灯光罩网渔业CPUE标准化研究[J]. 大连海洋大学学报, 2020, 35(3): 439-454.
XIE Enge, ZHOU Yanbo, FENG Fei, WU Qiaer, . Catch per unit effort (CPUE) standardization of purpleback flying squid Sthenoteuthis oualaniensis for Chinese large-scale lighting net fishery in the open sea of South China Sea. Journal of Dalian Ocean University, 2020, 35(3): 439-454.
2020, Vol. 35 
