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杨艳艳, 李焕军. 黄海中北部不同断面鱼卵、仔稚鱼群落结构特征[J]. 水生生物学报, 2022, 46(9): 1382-1392. DOI: 10.7541/2022.2021.0199
引用本文: 杨艳艳, 李焕军. 黄海中北部不同断面鱼卵、仔稚鱼群落结构特征[J]. 水生生物学报, 2022, 46(9): 1382-1392. DOI: 10.7541/2022.2021.0199
YANG Yan-Yan, LI Huan-Jun. COMMUNITY STRUCTURE OF ICHTHYOPLANKTON IN THE SECTIONS OF THE CENTRAL AND NORTH YELLOW SEA[J]. ACTA HYDROBIOLOGICA SINICA, 2022, 46(9): 1382-1392. DOI: 10.7541/2022.2021.0199
Citation: YANG Yan-Yan, LI Huan-Jun. COMMUNITY STRUCTURE OF ICHTHYOPLANKTON IN THE SECTIONS OF THE CENTRAL AND NORTH YELLOW SEA[J]. ACTA HYDROBIOLOGICA SINICA, 2022, 46(9): 1382-1392. DOI: 10.7541/2022.2021.0199

黄海中北部不同断面鱼卵、仔稚鱼群落结构特征

COMMUNITY STRUCTURE OF ICHTHYOPLANKTON IN THE SECTIONS OF THE CENTRAL AND NORTH YELLOW SEA

  • 摘要: 为了解黄海中北部近岸海域不同断面的鱼卵、仔稚鱼群落结构特征, 基于2017年5月、6月和7月对黄海中北部近岸海域内不同断面表层水平拖网的调查数据, 对该海域鱼卵和仔稚鱼的种类组成、数量分布、多样性等进行分析。结果表明: 3个航次共采获鱼卵5493粒, 仔稚鱼43尾, 经鉴定共20种, 隶属于7目16科20属, 种类以鲈形目为主要类群。采获鱼卵、仔稚鱼的数量在不同月份和不同断面间有所差异, 总体来看数量分布不均匀。采获鱼卵、仔稚鱼对应成鱼的适温类型主要由暖温种和暖水种组成, 仅有少量冷温种, 各生态类型种类数随断面不同有所变化, 暖温种在调查海域内由北向南呈递减的趋势, 暖水种则呈递增的趋势。鱼卵、仔稚鱼优势种和重要种组成在不同月份和不同断面间均有所差异, 鳀(Engraulis japonicus)为5月航次调查海域及T1和T2断面的鱼卵优势种, 仔稚鱼没有出现优势种。3个航次采集的鱼卵、仔稚鱼对应成鱼平均营养级分别为3.58、3.51和3.41, 呈现逐渐降低的趋势。调查海域内鱼卵、仔稚鱼的丰富度指数(D)、多样性指数(H′)和均匀度指数(J′)均以5月航次最高, 6月航次最低。此外, 两个断面各站位之间的丰富度指数(D)、多样性指数(H′)和均匀度指数(J′)均与深度关系密切。研究为黄海海域产卵场的养护及海洋鱼类早期补充群体资源的量化管理提供科学依据。

     

    Abstract: In order to understand the community structure characteristics of ichthyoplankton at different sections in the coastal waters of the central and north Yellow Sea, three surveys were conducted in May, June and July 2017, the species composition, quantity distribution, and diversity of ichthyoplankton in this sea area were analyzed. The results showed that a total of 5493 fish eggs and 43 larvae were collected during the three surveys by horizontal trawl with plankton net. The obtained ichthyoplankton belonged to 20 species, 20 genera, 16 families, and 7 orders, the main group was perciformes. The number of ichthyoplankton collected varied in different months and there were differences between sections. The collected fish eggs and larvae were mainly composed of warm-temperate species and warm-water species, with only a few cold-temperate species, and the number of species of each ecological type varied with different sections. The T1section was dominated by warm-temperate species, and the T2section had slightly more warm-water species than warm-temperate species, Warm-temperate species showed a decreasing trend from north to south in the surveyed sea area, while warm-water species showed an increasing trend. The composition of dominant and important species in ichthyoplankton changed in different months and sections, Engraulis japonicus is the dominant species of fish eggs in the surveyed waters of the May voyage and sections T1 and T2, and no dominant species appeared in larvae. The average trophic levels of ichthyoplankton collected during the three investigations were 3.58, 3.51 and 3.41, respectively, showing a gradual decrease. The richness index (D), diversity index (H′) and evenness index (J′) of ichthyoplankton were the highest in May and the lowest in June. In addition, there were some differences in the community diversity index of ichthyoplankton between the two sections, which were closely related to the depth.

     

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