贵州福泉的索氏桃花水母生长及精巢发育初步研究  

Preliminary Research on Growth and Testicle Development of Craspedacusta sowerbyi Inhibiting in Fuquan, Guizhou Province

作　　者：陶莎 姚俊杰[1] 谭华 杨梅[1] 石让安 TAO Sha;YAO Jun-Jie;TAN Hua;YANG Mei;SHI Rang-An(Institute of Fisheries Resources and Environment,Key Laboratory of Animal Genetics,Breeding and Reproduction in the Plateau Mountainous Region Ministry of Education,Guizhou University,Guiyang 550025;Fuquan County Aquaculture Techniques Station of Guizhou Province,Guiyang 550025,China)

机构地区：[1]贵州大学渔业资源与环境研究所,高原山地动物遗传育种与繁殖教育部重点实验室,贵阳550025 [2]贵州省福泉县水产站,贵阳550025

出　　处：《动物学杂志》2019年第4期581-588,共8页Chinese Journal of Zoology

基　　金：贵州省黔西南特色产业扶持与生态修复协同创新中心平台建设项目(黔科合2016-18);贵州省水产产业体系项目(No.GZCYTZX2013-011)

摘　　要：2017年10月中旬,在贵州省福泉县一个池塘中发现了桃花水母,经分子鉴定确认为索氏桃花水母(Craspedacusta sowerbyi)。研究了其生长发育的情况,建立了拟合优度线性相关函数,并观察了雄性索氏桃花水母精巢外形发育过程。结果表明,福泉的索氏桃花水母雌雄异体,雌性触手细长,伸向上方;雄性触手短粗,垂向下方。缘膜宽度、口径宽度、触手数量与伞径相关函数的相关系数r均大于0.75,说明3个指标与伞径之间均存在极强正相关关系。福泉的索氏桃花水母雄性个体性腺4个,淡绿色,成熟雄性个体精巢呈囊状、三角囊状、长三角囊状,4个精巢的发育不同步。研究表明,当伞径小于12 mm时,福泉的索氏桃花水母处于生长发育期,缘膜、口径宽度、触手数量、雄性精巢4个性状随之增长而变化,当伞径大于等于12 mm时,个体处于成熟期,上述4个性状相对稳定,变化不大。本文对于性腺作为桃花水母分类指标的有效性做了探讨。In mid-October 2017,Craspedacustas was found in a pond in Fuquan County,Guizhou Province.It was identified as Craspedacusta sowerbyi by molecular analysis.We observed its growth and testicle development process,then established correlations between width of velum,width of mouth and number of tentacles with its umbrella diameter respectively.As shown in Fig.1,the female tentacles were slender and extended upward,while the male tentacles were tubbiness-like and vertically downward.In the correlation function analysis as shown in Fig.5﹣7,R^2 values were 0.78,0.92,0.92 respectively,r values were 0.88,0.96,0.96 respectively,suggesting that there are strong positive correlation between the width of velum,width of mouth,number of tentacles with its umbrella diameter.But remarkably,when the umbrella diameter is greater than or equal to 12 mm,the changes of the three factors are not obvious.The growth of testicles is also consistent with this conclusion.Therefore,when the diameter is less than 12 mm,meaning C.sowerbyi is in developing stage,and the width of velum,width of mouth,number of tentacles and testicles increased with the increase of its diameter,while when the diameter is greater than or equal to 12 mm,the above characters are relatively stable and have little change with the increase of its diameter,meaning that Craspedacusta sowerbyi is in the maturation stage.

关 键 词：贵州福泉 索氏桃花水母 生长 性腺 精巢 

分 类 号：Q955[生物学—动物学]