| 引用本文: | 朱文斌,崔国辰,胡翠林,朱海晨,王雅丽,蒋日进,张亚洲,冯春雷.环境因子对浙江沿岸春季日本鲐(Scomber japonicus)幼鱼生长、分布的影响.海洋与湖沼,2021,52(6):1448-1455. |
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| 环境因子对浙江沿岸春季日本鲐(Scomber japonicus)幼鱼生长、分布的影响 |
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朱文斌1,2,3,4, 崔国辰2, 胡翠林1,2,3,4, 朱海晨2, 王雅丽2, 蒋日进1,2,3,4, 张亚洲1,2,3,4, 冯春雷5
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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.农业农村部重点渔场渔业资源科学观测实验站 舟山 316021;4.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;5.中国水产科学研究院东海水产研究所 上海 200090
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| 摘要: |
| 浙江沿岸海域是日本鲐（Scomber japonicus）的重要产卵场。当前针对日本鲐幼鱼生长发育的研究较少，而环境因子会对其生长、分布造成较大影响。根据2019年5月的科学观察员取样数据和环境数据，对其群体组成进行研究，运用Pearson相关性分析、广义加性模型（GAM）探究其分布及个体大小的影响因子，利用克里金插值法定量分析溶解氧对日本鲐幼鱼分布影响。结果表明：海水表层盐度（Sea Surface Salinity，SSS）是影响日本鲐幼鱼分布的主要环境因子，幼鱼集中分布于27.5-27.8盐度海域；浙江沿岸南部海域日本鲐幼鱼叉长、体重均值分别为37.6 mm、0.659 g，中部海域叉长、体重均值分别为64.2 mm、3.305 g，南部、中部海域间鲐幼鱼大小存在显著性差异（P<0.05）；日本鲐幼鱼个体大小主要受溶解氧和纬度影响，个体大小与溶解氧呈多波峰的非线性关系，随纬度增加呈先减小再增大趋势。研究表明：溶解氧是影响浙江沿岸日本鲐幼鱼生长、分布的关键环境因子；结合幼鱼分布特征及个体大小差异，推测浙江沿岸海域日本鲐幼鱼来自不同产卵批次。 |
| 关键词: 日本鲐 幼鱼 广义加性模型 分布 个体大小 环境因子 |
| DOI：10.11693/hyhz20210500117 |
| 分类号:S932 |
| 基金项目:国家重点研发计划项目,2019YFD0901505号;浙江省重点研发计划项目,2018C02026号;浙江省自然科学基金项目,LGN21C190005号;限额捕捞关键技术研究与制度探索,农财发[2017]36号。 |
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| EFFECTS OF ENVIRONMENTAL FACTORS ON GROWTH AND DISTRIBUTION OF YOUNG CHUB MACKEREL SCOMBER JAPONICUS ALONG THE COAST OF ZHEJIANG IN SPRING |
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ZHU Wen-Bin1,2,3,4, CUI Guo-Chen2, HU Cui-Lin1,2,3,4, ZHU Hai-Chen2, WANG Ya-Li2, JIANG Ri-Jin1,2,3,4, ZHANG Ya-Zhou1,2,3,4, FENG Chun-Lei5
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1.Zhejiang Marine Fisheries Research Institute, Zhoushan 316021, China;2.Marine and Fisheries Institute of Zhejiang Ocean University, Zhoushan 316021, China;3.Scientific Observing and Experimental Station of Fishery Resources for Key Fishing Grounds, Ministry of Agriculture and Rural Affairs, Zhoushan 316021, China;4.Key Laboratory of Sustainable Utilization of Technology Research for Fishery Resources of Zhejiang Province, Zhoushan 316021, China;5.East China Sea Fisheries Research Institute, Chinese Academy of Fishery Sciences College of Marine Science, Shanghai 200090, China
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| Abstract: |
| The coastal waters of Zhejiang Province is one of the important spawning grounds for Scomber japonicus. Currently, few studies focus on the growth and development of juvenile S. japonicus, and environmental factors have a great influence on their growth and distribution. Based on scientific observer samplings and environmental data collected in May 2019, we analyzed the distribution and growth status of S. japonicus juvenile off the coast of Zhejiang Province. We studied the population composition, explored the influencing factors of its distribution and body size using the Pearson correlation analysis and generalized additive model, and analyzed the influence of environmental factors on the distribution of mackerel juvenile quantitatively by using Kriging interpolation. The results show that the distribution of juvenile S. japonicus is concentrated in salinity waters of 27.5-27.8, which implies sea surface salinity is the main environmental factor affecting the abundance distribution. There were significant differences in size between the southern and central coastal waters of Zhejiang (P<0.05). The body size of young juvenile was mainly influenced by dissolved oxygen and latitude and had a nonlinear multi-peaks relationship with dissolved oxygen. In detail, the trend of their body size decreased first and then increased with latitude. Combing the distribution characteristics with body size differences, it is concluded that these juvenile S. japonicus may come from different spawning batches. |
| Key words: Scomber japonicus juvenile generalized additive model distribution body size environmental factors |
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