海洋学研究 ›› 2016, Vol. 34 ›› Issue (4): 54-62.DOI: 10.3969/j.issn.1001-909X.2016.04.007

• 研究报道 • 上一篇    下一篇

2015年春、秋季瓯江口鱼卵和仔稚鱼生态分布

杜萍1,2, 黄伟1,2, 徐旭丹1,2, 骆鑫1,2, 陈全震1,2, 曾江宁1,2, 寿鹿*1,2   

  1. 1.国家海洋局 海洋生态系统与生物地球化学重点实验室,浙江 杭州 310012;
    2.国家海洋局 第二海洋研究所,浙江 杭州 310012
  • 收稿日期:2016-05-03 修回日期:2016-09-09 出版日期:2016-12-15 发布日期:2022-11-24
  • 通讯作者: * 寿鹿(1979-),男,副研究员,主要从事海洋生态学研究。E-mail:shoulu981@sina.com
  • 作者简介:杜萍(1985-),女,山东德州市人,助理研究员,主要从事海洋浮游生态学研究。E-mail:duping@sio.org.cn
  • 基金资助:
    国家海洋公益性行业科研专项项目资助(201405007,201305043-3,201305009,201505027-4);浙江省自然科学基金项目资助(LY14D060007,LY13D060004);浙江省重中之重开放基金项目资助(XKZSC1411);国家海洋局第二海洋研究所基本科研业务费专项项目资助(JG1412)

Ecological distribution of ichthyoplankton around Oujiang estuary in spring and autumn in 2015

DU Ping1,2, HUANG Wei1,2, XU Xu-dan1,2, LUO Xin1,2, CHEN Quan-zhen1,2, ZENG Jiang-ning1,2, SHOU Lu*1,2   

  1. 1. Key Laboratory of Marine Ecosystem and Biogeochemistry, SOA, Hangzhou 310012, China;
    2. Second Institute of Oceanography, SOA, Hangzhou 310012, China
  • Received:2016-05-03 Revised:2016-09-09 Online:2016-12-15 Published:2022-11-24

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摘要： 为了解瓯江口海域鱼卵和仔稚鱼的生态分布现状,分别于2015年4月和10月在该海域开展生态调查。春、秋两季共采集到鱼卵42粒,仔稚鱼295尾;共鉴定出鱼卵和仔稚鱼16种,分别隶属于8目14科15属,其中鲈形目种类最多。春季鱼卵、仔稚鱼物种数和丰度均远高于秋季。春季鱼卵优势种为斑鰶Konosirus punctatus,秋季为舌鳎属未定种Cynoglossus sp.;春季仔稚鱼优势种为鮻Liza haematocheila、花鲈Lateolabrax japonicus和矛尾鰕虎鱼Chaeturichthys stigmatias,秋季为侧带小公鱼属未定种Stolephorus sp.。瓯江口海域春季鱼卵和仔稚鱼的丰度高值区均位于大门岛周围,该海域应在海洋生态红线划定时予以考虑,秋季则相对分散在较外侧海域。春季仔稚鱼数量分布与盐度和营养盐有极显著相关性。与20世纪90年代初相比,该海域的鱼卵、仔稚鱼物种及数量均在发生变化,数量略呈下降趋势。与浙江近岸其他海域相比,瓯江口海域的鱼卵、仔稚鱼数量偏低。

关键词: 鱼卵, 仔稚鱼, 瓯江口, 物种组成, 生态分布

Abstract: The ecological distribution of ichthyoplankton around Oujiang estuary was surveyed via horizontal trawl in spring and autumn in 2015. 16 species were identified in the two seasons, belonging to 15 genera of 14 families in 8 orders, with most species in Perciformes. 42 individual fish eggs and 295 individual fish larvae and juveniles were collected in the two seasons totally. The species number and abundance of fish eggs, larvae and juveniles in spring were both higher than those in autumn. The dominant species of fish eggs was Konosirus punctatus in spring and Cynoglossus sp. in autumn, and the dominant species of fish larvae and juveniles were Liza haematocheila, Lateolabrax japonicus and Chaeturichthys stigmatias in spring and Stolephorus sp. in autumn. The high abundance value areas of fish eggs, larvae and juveniles were both located around Damen Island in spring, while were scattered to the outer area relatively in autumn, thus the area around Damen Island should be considered in delimiting the Red-line of ecology. A significant correlation between fish larvae and juveniles and salinity and nutrient was detected in spring. Compared to the data in the early 1990s, species composition and abundance of ichthyoplankton in the study area both have been changing. The abundance of ichthyoplankton around Oujiang estuary was lower than that in other inshore areas along Zhejiang Province.

Key words: fish egg, larvae and juvenile, Oujiang estuary, species composition, ecological distribution

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