首页> 中文期刊> 《中国水产科学》 >人工蓄养斧文蛤的生殖周期及早期发育

人工蓄养斧文蛤的生殖周期及早期发育

         

摘要

为了探讨斧文蛤(Meretrix lamarkii Deshayes)的繁殖规律和胚胎发育过程,自2012年1月至2013年1月,每月采集样品,采用组织学方法对浙南海区移养的斧文蛤性腺发育、生殖周期和性成熟率周年变化进行了研究,并结合室内人工育苗试验对其胚胎发育过程进行了显微观察.结果表明,该地区斧文蛤的性腺发育以1年为1个周期,可分为增殖期、生长期、成熟期、排放期和休止期5个时期,雌雄性比约为1∶1,性腺发育时间基本同步,均始于2月,随着水温的升高而发育,大部分个体在6月至7月发育成熟,7月下旬至8月底是繁殖盛期,可用阴干加流水刺激方法诱导其排放精卵,受精卵在水温29℃、盐度28、pH 7.8~8.5条件下,经16~20 h孵化成D形幼虫,壳长为100~110 μm,浮游幼虫经5~6 d培育进入匍匐幼虫期,壳长约200 μm,最后发育变态为稚贝.本研究为斧文蛤的人工繁育、养殖开发以及种质资源保护提供了基础资料.%The benthic marine bivalve,Meretrix lamarkii,is a commercially caught species and is exploited in many southern coastal cities of China,where it is sold by wet weight.However,efficient and effective management strategies are needed for a sustainable supply of this wild resource,and an understanding of reproductive biology and the fishery is required.The aim of this study was:(1) characterize M.lamarkii gonadal morphology and histology;(2) describe the main gametogenic events and link them to maturation stage,and (3) characterize spawning,eggs,and newly hatched veliger larvae.Samples were collected monthly from January 2012 to January 2013 from Cangnan Bay,south of Zhejiang Province,China.Routine histological techniques were used to characterize the gonadal development stages.The results show that the clam is characterized by typical gonadal development of bivalves,and the reproductive cycle was divided into proliferation,growing,maturation,breeding,and suspensive stages.Gonadal maturation of clams from the South Zhejiang coast was completed over 1 year.The spawning season occurred from early June to mid-September,and peak spawning occurred from early July to mid-August,when water temperature was 24.8-29.4℃.This clam is dioecious,and gametes of both sexes are released at about the same time.The female to male ratio was 1 ∶ 1.Spawning was induced by shade-drying or running seawater.Embryos developed in salinity of 28 and temperature of 29℃.The D-shaped larvae hatched after 16-20 hours at 29 ℃.The larvae developed into post-larvae and completed metamorphosis into spat after 5-6 days,with a mean shell length of 200 μm.

著录项

  • 来源
    《中国水产科学》 |2017年第1期|82-90|共9页
  • 作者单位

    浙江省海洋水产养殖研究所,浙江省近岸水域生物资源开发与保护重点实验室,浙江温州325005;

    中国水产科学研究院海洋贝类工程技术研究中心,浙江温州325005;

    浙江省海洋水产养殖研究所,浙江省近岸水域生物资源开发与保护重点实验室,浙江温州325005;

    中国水产科学研究院海洋贝类工程技术研究中心,浙江温州325005;

    浙江省海洋水产养殖研究所,浙江省近岸水域生物资源开发与保护重点实验室,浙江温州325005;

    中国水产科学研究院海洋贝类工程技术研究中心,浙江温州325005;

    浙江省海洋水产养殖研究所,浙江省近岸水域生物资源开发与保护重点实验室,浙江温州325005;

    中国水产科学研究院海洋贝类工程技术研究中心,浙江温州325005;

    浙江省海洋水产养殖研究所,浙江省近岸水域生物资源开发与保护重点实验室,浙江温州325005;

    中国水产科学研究院海洋贝类工程技术研究中心,浙江温州325005;

    浙江省海洋水产养殖研究所,浙江省近岸水域生物资源开发与保护重点实验室,浙江温州325005;

    中国水产科学研究院海洋贝类工程技术研究中心,浙江温州325005;

  • 原文格式 PDF
  • 正文语种 chi
  • 中图分类 各种海产动植物养殖;
  • 关键词

    斧文蛤; 性腺发育; 繁殖周期; 胚胎发育;

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