渔业研究2017，Vol.39Issue(3)：172-180,9.DOI:10.14012/j.cnki.fjsc.2017.03.002
辐射荚蛏(Siliqua radiata)生物学的研究
Biology reserach of Siliqua radiata (Linnaeus)
摘要
Abstract
This paper reported the biology research results of Siliqua radiata which were found in Changle Coastal from 2013 to 2016.The contents included morphological characteristics(external morphology and internal structure),ecological distribution,group composition,habitat conditions,dry dew resistance,feeding,reproduction and growth.The results showed that shell height of siliqua radiata had linear regression relation with straight back shell length(H=0.360 6L-0.015 3).The distribution frequency of shell length was(fn)was 0.44.The optimum water temperature was 21~28℃,the optimum salinity range was 19.65~29.36,and the most suitable pH was 8.0~8.4.It would die if the amount of dissolved oxygen in water was less than 0.5 mg/L.The habitat bottom was mainly composed of fine sand with particle diameter of 0.10~0.25 mm.The dry dew resistance of Siliqua radiata was poor,and it would gradually die after 24 h under the temperature of 33~35℃.The substance of the stomach was marine diatoms.The contents of the stomach were mainly diatoms,but also a small amount of fine sand.Siliqua radiata was dioecious,and the biological minimum size was shell length of 42.60 mm and shell height of 15.50 mm.The absolute fecundity was(12.3~16.2)×104 grains,the reproductive period was from June to July every year,and the individual fecundity was(6~10)×104 grains.The diameter of demersal egg was 64 μm.The water temperature was(27.35±0.85)℃.After being cultured by feeding with Isochrysis galbuna and platymonas spp.for 10~13 days,the larvae of the straight line grew into juvenile shell with a length from 250 μm to 280 μm.The average length of one-year-old shell was 50.10 mm,the average length of two-year-old shell was 79.20 mm,and the average length of three-year-old shell was 101.50 mm.The purpose of the study was to provide scientific references for the proliferation and culture of Siliqua radiata.关键词
辐射荚蛏/生物学特性/生态习性Key words
Siliqua radiata/characteristics of biology/ecological habits分类
农业科技引用本文复制引用
刘德经,谢开恩,李正华,邹文钟,陈卫国,肖思祺..辐射荚蛏(Siliqua radiata)生物学的研究[J].渔业研究,2017,39(3):172-180,9.基金项目
福建省长乐市科学技术协会农业开发项目(2012012). （2012012）
