摘要
为评估中华绒螯蟹(Eriocheir sinensis)白壳品系土池生态繁育效果,以绿壳品系中华绒螯蟹作为对照,比较了白壳品系和对照品系在生殖性能、幼体发育及繁育效果等方面存在的差异。结果表明,就生殖性能而言,中华绒螯蟹白壳品系的配对及抱卵速度显著快于对照品系(P<0.05),但抱卵量和生殖力稍低于对照品系;幼体培育期间饵料投喂量呈先增后减变化,与之相反,幼体蜕壳周期呈先降后增的变化趋势,其中溞Ⅱ至大眼幼体期间白壳品系蜕壳周期稍短于对照品系(P>0.05);白壳品系的最终单产和单蟹产苗量均稍低于对照品系,而淡化率略高于对照品系,且组间差异均较小(P>0.05)。指出,中华绒螯蟹白壳品系在土池生态繁育过程中的生殖性能、幼体发育及繁育效果与普通绿壳个体接近,并且在抱卵速度方面存在一定优势。
To assess the ecological breeding performance of the white-carapace strain of Chinese mitten crab(Eriocheir sinensis),this study utilized normally colored E.sinensis broodstock as controls and compared the differences in reproductive performance,larval development,and breeding effects between the white-shell strain and the control group.The results indicate that:For reproductive performance,the white-shell strain exhibited faster mating and egg-carrying speed compared to the control group,although the egg production and fertility were slightly lower.During the larval rearing period,the feed intake showed a trend of increase followed by a decrease.In contrast,the molting cycle during larval rearing exhibited a trend of decrease followed by an increase.Specifically,the molting cycle of the white-shell strain during the zoea II to megalopa stage was slightly shorter than that of the control group.The final yield per unit and the seed production per individual of the white-shell strain were slightly lower than those of the control group,but the survival rate was slightly higher the control group.In summary,the reproductive performance,larval development,and breeding efficiency of the white-shell strain E.sinensis in the ecological breeding process are similar to those of ordinary green-shell individuals.Moreover,there is a certain advantage in egg-carrying speed.This study provides foundational data for the genetic breeding and large-scale application of the white-shell strain E.sinensis.
作者
戎智超
殷乐
成永旭
吴旭干
姜晓东
RONG Zhichao;YIN Le;CHENG Yongxu;WU Xugan;JIANG Xiaodong(College of Fisheries and Life Science,Shanghai Ocean University,Shanghai,201306,China;Shanghai Fisheries Institute/Shanghai Fisheries Technical Extension Station,Shanghai,200433,China)
出处
《水产养殖》
CAS
2024年第10期6-11,19,共7页
Journal of Aquaculture
基金
上海市科委农业科技领域项目(23N71900100)
上海市崇明区科委农业科技项目(CK2022-39)。
关键词
中华绒螯蟹
白壳品系
生殖性能
繁育效果
Eriocheir sinensis
White carapace strain
Reproductive performance
Breeding effects
