| 热带中西太平洋海域黄鳍金枪鱼的摄食生物学特性 |
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| 引用本文： | 石肖飞,王啸,王佚兮,石建高,张健. 热带中西太平洋海域黄鳍金枪鱼的摄食生物学特性[J]. 南方水产科学, 2022, 18(1): 43-51. DOI: 10.12131/20210140 |
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| 作者姓名： | 石肖飞 王啸 王佚兮 石建高 张健 |
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| 作者单位： | 上海海洋大学 海洋科学学院,上海 201306;上海开创远洋渔业有限公司,上海 200082;中国水产科学研究院东海水产研究所,上海 200090;上海海洋大学 海洋科学学院,上海 201306;国家远洋渔业工程技术研究中心/大洋渔业资源可持续开发教育部重点实验室,上海 201306 |
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| 基金项目： | 国家自然科学基金项目(31001138);国家重点研发计划项目(2020YFD0900803)。 |
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| 摘 要： | 利用延绳钓作业方式,于2018年5月—2019年2月对热带中西太平洋海域(163°14'E—173°35'E,2°03'S—11°17'S)的黄鳍金枪鱼(Thunnus albacares)进行了取样.对取样的919尾黄鳍金枪鱼叉长进行了组成和性比分析,对其中的551尾进行了摄食生物学研究,并使用方差分析(ANOVA)...
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| 关 键 词： | 黄鳍金枪鱼 摄食强度 生态位宽度 月相 水深 热带中西太平洋 |
Feeding biology of yellowfin tuna (Thunnus albacares) in tropical central and western Pacific Ocean |
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| SHI Xiaofei,WANG Xiao,WANG Yixi,SHI Jiangao,ZHANG Jian. Feeding biology of yellowfin tuna (Thunnus albacares) in tropical central and western Pacific Ocean[J]. South China Fisheries Science, 2022, 18(1): 43-51. DOI: 10.12131/20210140 |
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| Authors: | SHI Xiaofei WANG Xiao WANG Yixi SHI Jiangao ZHANG Jian |
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| Affiliation: | (College of Marine Sciences,Shanghai Ocean University,Shanghai 201306,China;Shanghai Kai Chuang Deep Sea Fisheries Co.,Ltd.,Shanghai 200082,China;East China Sea Fisheries Research Institute,Chinese Academy of Fishery Sciences,Shanghai 200090,China;National Engineering Research Centre for Oceanic Fisheries/Key Laboratory of Sustainable Exploitation of Oceanic Fisheries Resources,Ministry of Education,Shanghai 201306,China) |
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| Abstract: | We had collected 919 individuals of yellowfin tuna(Thunnus albacares) in the tropical central and western Pacific Ocean(163°14’E-173°35’E, 2°03’S-11°17’S) from May 2018 to February 2019 by pelagic longline fishing trageting tunas to analyze their size frequency and sex ratio. The feeding biology of 551 individulas was also studied. The effects of fork length, fishing water depth and lunar phase on feeding biology were analyzed by analysis of variance(ANOVA) and generalized linear mixed model(GLMM). The results show that: 1) The fork length range was 87-163 cm, and the sex ratio(female to male) was 1: 1.32.2) The hollow stomach rate accounted for 33.76%. For tunas with non-empty stomach, the frequency of presense of sardines,squid and miscellaneous fish in stomach contents were 52.60%, 35.34% and 33.70%, respectively. 3) The ANOVA results show that fork length and lunar phase had significant effects on the Shannon-Weiner diversity index(H’) and Pielou evenness index(J’), while month and water depth did not. 4) The feeding intensity was mainly at Level 0-2, and the empty stomach rate increased as the fork length increased. The proportion of high feeding intensity(Level 2-4) increased gradually as water depth increased. 5) The result of GLMM fit shows that biological factors(fork length and gender), spatial and temporal factors(cosine of lunar phase and water depth) had significant effects on the feeding intensity of yellowfin tuna. |
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| Keywords: | Thunnus albacares Feeding intensity Niche breadth Lunar phase Water depth Tropical western central Pacific Ocean |
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