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| 浙江三门湾鱼卵、仔稚鱼群聚结构时空变化研究 |
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邱科程1,2, 张荣良2, 晁敏3, 程方平2, 曾江宁2, 彭欣4, 冯志华1, 陈全震2, 徐旭丹2, 黄伟2
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1.江苏海洋大学海洋科学与水产学院 江苏连云港 222005;2.自然资源部第二海洋研究所 自然资源部海洋生态系统动力学重点实验室 浙江杭州 310012;3.中国水产科学研究院东海水产研究所 上海 200090;4.浙江省海洋水产养殖研究所 浙江温州 325005
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| 摘要: |
| 鱼卵和仔稚鱼在海洋生态系统能量传递中起重要作用,作为渔业资源的早期补充群体,其分布、群聚结构对评估渔业资源和保护渔业资源具有重要意义。为了解三门湾鱼卵、仔稚鱼群聚结构时空变化规律,对该海域鱼卵、仔稚鱼进行春、夏两季调查,分析了该海域鱼卵、仔稚鱼组成及群聚结构变化等特征。结果发现:(1)两季共鉴定出鱼卵、仔稚鱼8目21科40种,其中定性样品鱼卵、仔稚鱼8目21科36种,定量样品鱼卵、仔稚鱼4目11科24种;鱼卵优势种为斑鰶(Konosirus punctatus)、鲷科未定种(Sparidae)、蓝点马鲛(Scomberomorus niphonius)、鮻(Liza haematocheila)、舌鳎属(Cynoglossus spp.)、石首鱼科未定种(Sciaenidae)、小公鱼属(Stolephorus spp.);仔稚鱼优势种为鮻、孔虾虎鱼(Trypauchen vagina)、小公鱼属、细棘虾虎鱼属(Acentrogobius spp.)、缟虾虎鱼属(Tridentiger spp.)。(2)三门湾湾内与湾外鱼卵、仔稚鱼群聚的组成存在显著差异,且湾内密度均高于湾外,反映出优势种鱼类在产卵季对于水文环境(如海流、温度)的空间响应。(3)三门湾鱼卵、仔稚鱼的群聚组成季节波动明显,主要由鱼类产卵的季节节律以及以洄游习性等差异形成。结果表明,三门湾鱼卵、仔稚鱼群聚结构空间、季节差异明显,与历史资料相比,鱼卵、仔稚鱼资源从“年际”短时间尺度看已初步显现一定恢复态势。 |
| 关键词: 鱼卵 仔稚鱼 三门湾 群聚结构 环境因子 |
| DOI：10.11693/hyhz20211100285 |
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| 基金项目:国家自然科学基金项目,42076169号;自然资源部第二海洋研究所基本科研业务费专项,JG1718号,JG2106号;国家重点研发计划项目,2018YFD0900901号,2019YFD0901101号;浙江省自然科学基金杰出青年项目,LR21D060001号;中国亚太经合组织合作基金,2029901号;卫星海洋环境动力学国家重点实验室自主课题重点项目,SOEDZZ2102号。 |
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| SPATIOTEMPORAL VARIATIONS IN CLUSTER STRUCTURE OF FISH EGGS, LARVAE, AND JUVENILES IN THE SANMEN BAY, ZHEJIANG, EAST CHINA SEA |
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QIU Ke-Cheng1,2, ZHANG Rong-Liang2, CHAO Min3, CHENG Fang-Ping2, ZENG Jiang-Ning2, PENG Xin4, FENG Zhi-Hua1, CHEN Quan-Zhen2, XU Xu-Dan2, HUANG Wei2
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1.School of Marine Science and Fisheries, Jiangsu Ocean University, Lianyungang 222005, China;2.Key Laboratory of Marine Ecosystem Dynamics, Ministry of Natural Resources, Second Institute of Oceanography, Ministry of Natural Resources, Hangzhou 310012, China;3.East China Sea Fisheries Research Institute, Chinese Academy of Fishery Sciences, Shanghai 200090, China;4.Zhejiang Institute of Marine Aquaculture, Wenzhou 325005, China
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| Abstract: |
| Fish eggs, larvae, and juveniles play important roles in energy transfer of marine ecosystems. As early supplementary groups of fishery resources, understanding their distribution and cluster structure is important for assessing and protecting fishery resources. In this study, surveys were conducted in the Sanmen Bay, Zhejiang, East China in spring (April 2020) and summer (Aug. 2019) to analyze the compositions and spatial-temporal variations in the cluster structure of fish eggs, larvae, and juveniles. Forty species, 21 families, and 8 orders of fish eggs, larvae, and juveniles were identified. The fish eggs were dominant by Konosirus punctatus, Sparidae, Scomberomorus niphonius, Liza haematocheila, Cynoglossus spp., Sciaenidae, Stolephorus spp., while larvae and juveniles were mainly Liza haematocheila, Trypauchen vagina, Stolephorus spp., Acentrogobius spp., and Tridentiger spp. The community compositions of fish eggs, larvae, and juveniles inside and outside of the bay were significantly different from each other. Generally, the density inside the bay was higher than that outside, mirroring the spatial response of dominant species to the local hydrological environment (i.e., the currents and temperature) during the spawning season. The compositions of fish eggs, larvae, and juveniles clusters in the Sanmen Bay fluctuated significantly within season due mainly to the seasonal rhythm of fish spawning and migrating. The clear spatial and temporal differences in the community structures of fish eggs and juvenile fish and their resources in the Sanmen Bay present a certain recovery trend on short-term interannual scale when compared to the historical data. |
| Key words: fish eggs larvae and juveniles Sanmen Bay cluster structure environmental factors |
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