中国水产科学2017，Vol.24Issue(1)：82-90,9.DOI:10.3724/SP.J.1118.2017.16002
人工蓄养斧文蛤的生殖周期及早期发育
Reproductive cycle and early development of Meretrix lamarkii (Veneroida: Veneridae) under artificial conditions
摘要
Abstract
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.关键词
斧文蛤/性腺发育/繁殖周期/胚胎发育Key words
Meretrix lamarkii/gonad development/reproductive cycle/embryo development分类
农业科技引用本文复制引用
邵艳卿,张炯明,方军,肖国强,滕爽爽,柴雪良..人工蓄养斧文蛤的生殖周期及早期发育[J].中国水产科学,2017,24(1):82-90,9.基金项目
国家海洋公益性行业科研专项子任务(201205021-5) （201205021-5）
国家水产种质资源平台项目(2015DKA30470) （2015DKA30470）
温州市科技项目(S20110006). （S20110006）
