| 东太平洋赤道海域茎柔鱼小型群体资源分布及其渔场环境特征 |
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| 引用本文： | 玄文丹,崔国辰,李哲,魏裙倚,陶迎新,刘连为,陈峰,朱文斌.东太平洋赤道海域茎柔鱼小型群体资源分布及其渔场环境特征[J].海洋与湖沼,2022,53(5). |
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| 作者姓名： | 玄文丹 崔国辰 李哲 魏裙倚 陶迎新 刘连为 陈峰 朱文斌 |
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| 作者单位： | 1. 浙江海洋大学海洋与渔业研究所 浙江舟山 316021;2. 浙江省海洋水产研究所 浙江舟山 316021,1. 浙江省海洋水产研究所 舟山 316021; 2. 浙江海洋大学海洋与渔业研究所 舟山 316021; 3. 海安县水产技术推广站 海安 226600,1. 浙江海洋大学海洋与渔业研究所 浙江舟山 316021;2. 浙江省海洋水产研究所 浙江舟山 316021;4. 农业农村部重点渔场渔业资源科学观测实验站 浙江舟山 316021;5. 浙江省海洋渔业资源可持续利用技术研究重点实验室 浙江舟山 316021,1. 浙江海洋大学海洋与渔业研究所 浙江舟山 316021;2. 浙江省海洋水产研究所 浙江舟山 316021,1. 浙江海洋大学海洋与渔业研究所 浙江舟山 316021;2. 浙江省海洋水产研究所 浙江舟山 316021,1. 浙江海洋大学海洋与渔业研究所 浙江舟山 316021;2. 浙江省海洋水产研究所 浙江舟山 316021;4. 农业农村部重点渔场渔业资源科学观测实验站 浙江舟山 316021;5. 浙江省海洋渔业资源可持续利用技术研究重点实验室 浙江舟山 316021,1. 浙江海洋大学海洋与渔业研究所 浙江舟山 316021;2. 浙江省海洋水产研究所 浙江舟山 316021;4. 农业农村部重点渔场渔业资源科学观测实验站 浙江舟山 316021;5. 浙江省海洋渔业资源可持续利用技术研究重点实验室 浙江舟山 316021,1. 浙江省海洋水产研究所 舟山 316021; 2. 浙江海洋大学海洋与渔业研究所 舟山 316021; 4. 农业部重点渔场渔业资源科学观测实验站 舟山 316021; 5. 浙江省海洋渔业资源可持续利用技术研究重点实验室 舟山 316021 |
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| 基金项目： | 国家重点研发计划项目, 2019YFD0901505号。 |
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| 摘 要： | 茎柔鱼(Dosidicus gigas)是我国远洋渔业的重要捕捞对象。当前针对茎柔鱼渔场分布及其与环境关系的研究多集中于秘鲁海域,针对赤道海域茎柔鱼特定种群小型群体资源分布及其渔场环境特征研究较少。根据2019年12月至2020年2月茎柔鱼生物学数据,2019年12月至2020年4月生产和环境数据,运用胴长-体重关系拟合、地统计插值、广义可加模型(GAM)探究其资源分布及渔场环境状况。结果表明：东太平洋赤道海域茎柔鱼胴长范围为136~407 mm,体重范围为117~1557 g;2019年12月至2020年4月各月渔获量呈先增加后减小趋势,2月渔获量最高;CPUE曲线除2月增加外,总体呈下降趋势;渔场集中分布于0°~3°S、105°W~114°W海域,不同月份渔场重心经向变化明显;渔场最适SST范围是24.5~25.5 °C,最适Chl-a范围是0.16~0.20 mg/m3,月份是影响茎柔鱼CPUE的主要因子。研究表明：该海域茎柔鱼渔获主要为小型群体;小型群体生长发育期(2–3月)对渔场分布有重要影响,生长发育期前茎柔鱼集群度高,生长发育期后逐渐分散活动;单一影响因子与茎柔鱼CPUE相关性不显著,综合考虑其他环境因素及其交互影响是今后的研究方向。
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| 关 键 词： | 茎柔鱼 东太平洋 小型群体 渔场分布 GAM模型 环境因子 |
| 收稿时间： | 2021/12/12 0:00:00 |
| 修稿时间： | 2022/1/24 0:00:00 |
Distribution of resource and fishery environment characteristics of small populations of Dosidicus gigas in the Equator in Eastern Pacific Ocean |
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| XUAN Wen-Dan,CUI Guo-Chen,LI Zhe,WEI Qun-Yi,TAO Ying-Xin,LIU Lian-Wei,CHEN Feng and Zhu Wen-Bin.Distribution of resource and fishery environment characteristics of small populations of Dosidicus gigas in the Equator in Eastern Pacific Ocean[J].Oceanologia Et Limnologia Sinica,2022,53(5). |
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| Authors: | XUAN Wen-Dan CUI Guo-Chen LI Zhe WEI Qun-Yi TAO Ying-Xin LIU Lian-Wei CHEN Feng and Zhu Wen-Bin |
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| Institution: | 1. Marine and Fisheries Institute of Zhejiang Ocean University, Zhoushan 316021, China; 2. Zhejiang Marine Fisheries Research Institute, Zhoushan 316021, China,1. Zhejiang Marine Fisheries Research Institute, Zhoushan 316021, China; 2. Marine and Fisheries Institute of Zhejiang Ocean University, Zhoushan 316021, China; 3. Haian Aquatic Product Technology Promotion Department 226600, China;,1. Marine and Fisheries Institute of Zhejiang Ocean University, Zhoushan 316021, China; 2. Zhejiang Marine Fisheries Research Institute, Zhoushan 316021, China; 4. Scientific Observing and Experimental Station of Fishery Resources for Key Fishing Grounds, Zhoushan 316021, China; 5. Ministry of Agriculture and Rural Affairs / Key Laboratory of Sustainable Utilization of Technology Research for Fishery Resource of Zhejiang Province, Zhoushan 316021, China,1. Marine and Fisheries Institute of Zhejiang Ocean University, Zhoushan 316021, China; 2. Zhejiang Marine Fisheries Research Institute, Zhoushan 316021, China,1. Marine and Fisheries Institute of Zhejiang Ocean University, Zhoushan 316021, China; 2. Zhejiang Marine Fisheries Research Institute, Zhoushan 316021, China,1. Marine and Fisheries Institute of Zhejiang Ocean University, Zhoushan 316021, China; 2. Zhejiang Marine Fisheries Research Institute, Zhoushan 316021, China; 4. Scientific Observing and Experimental Station of Fishery Resources for Key Fishing Grounds, Zhoushan 316021, China; 5. Ministry of Agriculture and Rural Affairs / Key Laboratory of Sustainable Utilization of Technology Research for Fishery Resource of Zhejiang Province, Zhoushan 316021, China,1. Marine and Fisheries Institute of Zhejiang Ocean University, Zhoushan 316021, China; 2. Zhejiang Marine Fisheries Research Institute, Zhoushan 316021, China; 4. Scientific Observing and Experimental Station of Fishery Resources for Key Fishing Grounds, Zhoushan 316021, China; 5. Ministry of Agriculture and Rural Affairs / Key Laboratory of Sustainable Utilization of Technology Research for Fishery Resource of Zhejiang Province, Zhoushan 316021, China,1. Zhejiang Marine Fisheries Research Institute, Zhoushan 316021, China; 2. Marine and Fisheries Institute of Zhejiang Ocean University, Zhoushan 316021, China; 4. Scientific Observing and Experimental Station of Fishery Resources for Key Fishing Grounds, Zhoushan 316021, China; 5. Ministry of Agriculture and Rural Affairs, P. R. China/Key Laboratory of Sustainable Utilization of Technology Research for Fishery Resource of Zhejiang Province, Zhoushan 316021, China |
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| Abstract: | Dosidicus gigas is one of the most important fish in China"s ocean fishery. At present, the research on the distribution of the fishing ground and its relationship with the environment is mainly focused on the waters off Peru, while the research on the resource distribution and fishery environment characteristics of the specific population of D. gigas in the equatorial waters is less. Based on the biological data from December 2019 to February 2020 and the production and environmental data from December 2019 to April 2020, this study used the mental length-weight relationship fitting, geostatistical interpolation, and generalized additive model (GAM) to investigate the population composition and resource distribution of D. gigas. The results showed that the monthly catch of D. gigas. in the equator in Eastern Pacific from December 2019 to April 2020 showed a trend of first increasing and then decreasing, with the highest catch in February. Except for an increase in February, the CPUE showed a general downward trend. The center of fishing grounds distributed in the area of 0°~3°S and 105°W~114°W, and the longitudinal direction of the center of gravity of fishing grounds changed obviously in different months. The optimal range of SST was 24.5~25.5 °C, and the optimal range of Chl-a was 0.16~0.20 mg/m3. Month was the main factor affecting CPUE. The catch of D. gigas was mainly small-sized group. Small-sized group growth and development period (From February to March) had an important effect on the distribution of the fishery. Before the growth and development period, the degree of cluster was high, and gradually dispersed after the growth and development period. There was no significant correlation between CPUE and single influencing factor. Considering other environmental factors and their interaction is the future research direction. |
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| Keywords: | Dosidicus gigas Eastern Pacific Ocean small-sized group distribution of fisheries GAM environmental factors |
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