人工繁育条件下的褐菖鲉(Sebastiscus marmoratus)繁殖特性研究

扫码查看

原文链接

万方数据
维普

中文摘要：为进一步了解和掌握人工繁育条件下褐菖鲉(Sebastiscus marmoratus)繁殖特性,从2021年5月至2023年6月采集不同月份的褐菖鲉性腺样本,对不同阶段的性腺表型和组织变化、发育周期、生殖腺指数及绝对繁殖力进行分析.结果表明,褐菖鲉为典型的卵胎生鱼类,精巢为全囊成熟型,可分为6期;卵巢为部分同步型,交尾受精后存在妊娠期,共分为7期.各月份性腺分期及生殖腺指数统计结果显示,褐菖鲉繁殖高峰期为每年12月至翌年4月,其中雄性1龄性成熟,雌性2龄性成熟,生殖腺指数在发育阶段显著上升(P＜0.05),在交尾排精和产仔后显著下降.此外,1～4龄褐菖鲉的平均绝对繁殖力分别为7 087、(19 726±4 470)、(35 924±4 190)、(43 203±6 204)粒,各年龄组存在显著性差异,方程拟合得出绝对繁殖力与体长、体质量呈二项式相关.首次对人工繁育条件下的褐菖鲉性腺发育过程和繁殖特性进行两周年的持续追踪和研究,结果将有助于加深对其繁殖特性的了解,提升规模化繁育技术水平.

外文标题：REPRODUCTIVE BIOLOGY OF FISH SEBASTISCUS MARMORATUS UNDER ARTIFICIAL BREEDING

外文摘要：To understand the reproductive biology characteristics of Sebastiscus marmoratus under artificial breeding,gonad samples of S.marmoratus in different months from May 2021 to June 2023 were sampled;and the gonadal phenotypes and tissue changes,development cycles,gonad index,and absolute fecundity at different stages were analyzed.Results show that S.marmoratus is a typical ovoviviparous fish;and the sperm enters the ovary to form fertilized eggs and hatch into larvae,which is called as gestation period.The testis was cystic type and could be divided into 6 stages.The ovary was partially synchronized and could be divided into 7 stages.The results of gonad staging and index in each month show that the breeding time of S.marmoratus was from December to April of the next year,during which the male ones were sexually matured in the 1st year and the female was sexually matured in the 2nd year.The gonad index increased significantly during the development stage(P＜0.05),decreased significantly after sperm ejaculation and calving.In addition,the average absolute fecundity of 1-4-year-old S.marmoratus were 7 087,(19 726±4 470),(35 924±4 190),and(43 203±6 204)grains,respectively.There are significant differences in each age group.The equation fitting shows that the absolute fecundity was binomially related to the body length and mass.This study is the first attempt to conduct continuous tracking on the gonad development course and reproductive characteristics of S.marmoratus under artificial breeding conditions in two years,and shall help deepen the understanding of its reproductive characteristics and improve the level of large-scale breeding technology.

外文关键词：

Sebastiscus marmoratustestisovaryhistology observationgonad somatic indexabsolute fecundity

作者：

邹雄、阮泽超、张燕、王跃斌、汪倩凤、柴学军

展开 >

作者单位：

浙江海洋大学水产学院浙江舟山 316022

浙江省海洋水产研究所浙江省海水增养殖重点实验室浙江舟山 316021

关键词：

褐菖鲉(Sebastiscus marmoratus) 精巢卵巢组织学观察生殖腺指数绝对繁殖力

基金：

浙江省海洋水产研究所计划科技项目浙江省科学技术厅科研院所项目舟山渔业育种育苗科创中心专项舟山市公益科技项目

项目编号：

HYS-CZ-202302号HYS-CZ-202407号2023Y001-4号202303C31042号

出版年：

2024

DOI：

10.11693/hyhz20240200030

海洋与湖沼

中国海洋湖沼学会中国科学院海洋研究所

海洋与湖沼

CSTPCD北大核心

影响因子：0.737

ISSN：0029-814X

年,卷(期)：2024.55(4)

参考文献量14