Comparative analysis of embryonic development and growth performance among two mud crab species and their hybrids

IF 3.9 1区农林科学 Q1 FISHERIES

Aquaculture Pub Date : 2024-10-22 DOI:10.1016/j.aquaculture.2024.741795

Yang Zhao , Waqas Waqas , Wenxiao Cui , Shaopan Ye , Weifeng Gao , Qingyu Zhang , Zhen Lin , Di Zhu , Feng Lin , Mhd Ikhwanuddin , Hongyu Ma

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Abstract

In modern aquaculture, inter-specific hybridization enhances traits, but its effects on embryonic development and growth in mud crabs (genus Scylla) remain underexplored. This study investigated the embryonic development and growth performance of Scylla paramamosain, Scylla serrata, and their hybrid offsprings from reciprocal crosses. We found that S. paramamosain and the hybrid (S. paramamosain ♀ × S. serrata ♂) produced smaller eggs with shorter development periods than S. serrata and the hybrid (S. serrata ♀ × S. paramamosain ♂). Both hybrids exhibited higher growth rates in the crablet stage than their purebred parents. Notably, the hybrid (S. serrata ♀ × S. paramamosain ♂) demonstrated significant heterosis in body weight and height, while the hybrid (S. paramamosain ♀ × S. serrata ♂) showed single-parent heterosis. While the shape of the frontal lobe spines in hybrids depended on the male parent. Development durations varied, with the longest observed in the hybrid (S. paramamosain ♂ × S. serrata ♀). Discriminant analysis of growth traits showed high accuracy across developmental stages, supporting the potential of inter-specific hybridization for enhancing mud crab aquaculture. This research provides valuable insights and germplasm resources for the aquaculture industry.

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两种泥蟹及其杂交种胚胎发育和生长性能的比较分析

在现代水产养殖中，种间杂交可提高性状，但其对泥蟹（Scylla 属）胚胎发育和生长的影响仍未得到充分探索。本研究调查了副螯蟹（Scylla paramamosain）、鮨蟹（Scylla serrata）及其杂交后代的胚胎发育和生长性能。我们发现，与S. serrata和杂交种（S. serrata ♀ × S. paramamosain ♂）相比，S. paramamosain和杂交种（S. paramamosain ♀ × S. serrata ♂）产生的卵更小，发育期更短。与纯种亲本相比，两种杂交种在幼虫期的生长率都较高。值得注意的是，杂交种（S. serrata ♀ × S. paramamosain ♂）在体重和体高方面表现出显著的异交性，而杂交种（S. paramamosain ♀ × S. serrata ♂）则表现出单亲异交性。杂交种额叶刺的形状取决于雄性亲本。发育期长短不一，杂交种（S. paramamosain ♂ × S. serrata ♀）的发育期最长。对各发育阶段生长性状的判别分析显示出较高的准确性，支持了种间杂交在提高泥蟹养殖水平方面的潜力。该研究为水产养殖业提供了宝贵的见解和种质资源。

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来源期刊

Aquaculture 农林科学-海洋与淡水生物学

CiteScore

8.60

自引率

17.80%

发文量

1246

审稿时长

56 days

期刊介绍： Aquaculture is an international journal for the exploration, improvement and management of all freshwater and marine food resources. It publishes novel and innovative research of world-wide interest on farming of aquatic organisms, which includes finfish, mollusks, crustaceans and aquatic plants for human consumption. Research on ornamentals is not a focus of the Journal. Aquaculture only publishes papers with a clear relevance to improving aquaculture practices or a potential application.