文章摘要
岱衢洋产卵场鱼卵仔稚鱼群落结构及其与环境因子的关系
Community structure of ichthyoplankton and its relationship with environmental factors?in Daiquyang spawning ground
投稿时间:2019-04-11  修订日期:2019-07-20
DOI:
中文关键词: 鱼卵  仔稚鱼  季节变化  种类组成  环境因子
英文关键词: fish eggs  fish larvae  seasonal variation  species composition  environmental factor
基金项目:国家重点研发计划项目(2018YFD0900904;2017YFA0604904);浙江省重点研发计划项目(2019C02056); 浙江省科技计划项目(2017F50015);浙江省自然科学基金(LY17C190006)
作者单位E-mail
樊紫薇 浙江海洋大学海洋与渔业研究所 1512828906@qq.com 
蒋日进 浙江省海洋水产研究所 jiangridge@163.com 
张洪亮 浙江省海洋水产研究所  
陈峰 浙江省海洋水产研究所  
印瑞 浙江省海洋水产研究所  
张琳琳 浙江省海洋水产研究所  
梁君 浙江省海洋水产研究所  
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中文摘要:
      2010年5月~2012年2月春季、夏季、秋季和冬季,利用大型浮游生物网在岱衢洋海域开展了8个航次的鱼卵、仔稚鱼调查。共采集到鱼卵1042粒,仔稚鱼2055尾。鉴定出鱼卵、仔稚鱼26种(不包含12种未定名物种),隶属于9目15科26属。鱼卵优势种为扁舵鰹和小带鱼等;仔稚鱼的优势种为鮻、鯷和中华小公鱼等。调查海域鱼卵的平均密度是8.40ind./100m3,仔稚鱼的平均密度是14.85ind./100m3。单因素方差分析结果显示,2010年和2011年春、夏季4个季节之间丰富度指数(D)、均匀度指数(J')和多样性指数(H')均存在极显著差异(P<0.01)。鱼卵、仔稚鱼资源密度分布不均匀,春、夏季较高,冬季最低,大体呈现南高北低的趋势。Pearson相关性结果分析得出,与鱼卵、仔稚鱼关系最密切的环境因子为温度、盐度和悬浮物(P<0.01)。研究结果表明,春、夏季是岱衢洋海域鱼类产卵的重要时期,该海域是鯷、扁舵鰹、中华小公鱼等中上层鱼类的重要产卵场和育幼场。
英文摘要:
      The ichthyoplankton net was used to carry out the survey of fish eggs and larvae of Daiquyang during May 2010 and February 2012. According to the investigation results, 1042 fish eggs and 2055 fish larvae were identified as 26 species of fishes belonging to 26 genera, 15 families and 9 orders(not including twelve unidentified species). The dominant species of fish eggs were Auxis thazard and Eupleurogrammus muticus while fish larvae were Liza haematocheilus, Engraulis japonicas and Stolephorus chinensis. The average density of fish eggs in the surveyed areas was 8.40ind./100m3 while fish larvae was 14.85ind./100m3. The?results?of?one-way?ANOVA?showed?that?there?were?highly significant?differences?(P<0.01)?among?the diversity index (H')?in?4 seasons of spring and summer from 2010 to 2011,?so?did??the evenness index?(J') and richness index(D). The CPUE of fish eggs and larvae were uneven distribution, it was higher in spring and summer, but lowest in winter, which revealed that fish eggs and larvae resource density demonstrated a tendency of higher in the south stations and lower in the north stations . Pearson Correlation Analysis proved that the environmental factors most closely related to fish eggs and larvae were temperature, salinity and suspended matter(P<0.01). The results suggested that spring and summer were important seasons for fish spawning and Daiquyang areas were important spawning and nursery grounds for pelagic fishes such as Engraulis japonicas, Auxis thazard and Stolephorus chinensis.
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