摘要
根据2015和2016年春季灯光罩网渔船分别在南海南部和北部海域作业的鸢乌贼产量数据,研究作业条件水深、时间和月相与单位捕捞努力量渔获量(CPUE)的关系。GAM模型分析,作业时间和农历日对CPUE的影响显著。结果显示,月光天时,0~999m水深范围CPUE较低;月黑天时,各水层CPUE变化不大,2500~2999m水深范围CPUE较高;作业时间在上半夜(21:00—23:00),CPUE较高,最高达399.4kg/网,下半夜(0:00—5:00)CPUE逐渐下降;月光天和月黑天产量差别较大,分别为267.0和321.6kg/网;厄尔尼诺现象在一定程度上影响了鸢乌贼资源量在各水层的变化。各作业条件对鸢乌贼CPUE影响的研究能够为渔场的寻找提供参考。
According to the yield data of the Sthenoteuthis oualaniensis in the southern and northern sea areas of the South China Sea in spring in 2015 and 2016, the present research was carried out to analyze the relationship between depth, working time and moon phases and CPUE under the condition of operation. From the GAM model analysis, we knew that the effect of operation time and lunar day on CPUE was significant. The results showed that CPUE is relatively low at the depth of 0-999 m under the water in the bright moonlight. When there was nomoonlight, the CPUE in each water layer changed little, and the CPUE at the depth of 2 500-2 999 m was relatively higher. When the working time in the first half of the night(21:00—24:00), the CPUE was higher, which wan up to 399.4 kg/net at most, and the CPUE gradually decreased in the second half of the night(0:00—5:00). There was a great difference in the yield between the bright moonlight and moonless night, which were respectively 267.0 kg/net and 321.6 kg/net. E1 Nino has impact on the changes of the S. oualaniensis resources in various water layers to a certain extent. The research on the effect of operational conditions on CPUE of the S. oualaniensis can provide reliable suggestions for fishing ground.
作者
招春旭
邱星宇
何雄波
王国易
顾银娜
钟亚娜
颜云榕
康斌
ZHAO Chunxu;QIU Xingyu;HE Xiongbo;WANG Guoyi;GU Yinna;ZHONG Yana;YAN Yunrong;KANG Bin(Fisheries College,Jimei University,Xiamen 361021,China;Fisheries College,Guangdong Ocean University,Zhanjiang 524088,China;Center of South China Sea Fisheries Resources Monitoring and Assessment,Guangdong Ocean University,Zhanjiang 524088,China;Guangdong Provincial Engineering and Technology Research Center of Far Sea Fisheries management and Fishing of South China Sea,Zhanjiang 524088,China;College of Fisheries,Ocean University of China,Qingdao 266100,China)
出处
《水产学报》
CAS
CSCD
北大核心
2019年第11期2372-2382,共11页
Journal of Fisheries of China
基金
国家重点研发计划(2018YFD0900905)
国家自然科学基金(41476149,41376158)
广东省南海深远海渔业管理与捕捞工程技术中心配套经费~~
关键词
鸢乌贼
水深
月相
GAM
厄尔尼诺
Sthenoteuthis oualaniensis
water depth
moon phase
GAM
E1 Nino