Siddique Mohammad Abdul Momin, Linhart Otomar, Krejszeff Sławomir, Żarski Daniel, Pitcher Trevor E, Politis Sebastian Nikitas, Butts Ian Anthony Ernest
University of South Bohemia in Ceske Budejovice, Faculty of Fisheries and Protection of Waters, South Bohemian Research Center of Aquaculture and Biodiversity of Hydrocenoses, Research Institute of Fish Culture and Hydrobiology, Zátiší 728/II, 389 25 Vodňany, Czech Republic.
University of South Bohemia in Ceske Budejovice, Faculty of Fisheries and Protection of Waters, South Bohemian Research Center of Aquaculture and Biodiversity of Hydrocenoses, Research Institute of Fish Culture and Hydrobiology, Zátiší 728/II, 389 25 Vodňany, Czech Republic.
Gen Comp Endocrinol. 2017 May 1;245:30-35. doi: 10.1016/j.ygcen.2016.07.004. Epub 2016 Jul 9.
Paternal, compared to maternal, contributions were believed to have only a limited influence on embryonic development and larval fitness traits in fishes. Therefore, the perspective of male influence on early life history traits has come under scrutiny. This study was conducted to determine parental effects on the rate of eyed embryos of Ide Leuciscus idus and Northern pike Esox lucius. Five sires and five dams from each species were crossed using a quantitative genetic breeding design and the resulting 25 sib groups of each species were reared to the embryonic eyed stage. We then partition variation in embryonic phenotypic performance to maternal, paternal, and parental interactions using the Restricted Maximum Likelihood (REML) model. Results showed that paternal, maternal, and the paternal×maternal interaction terms were highly significant for both species; clearly demonstrating that certain family combinations were more compatible than others. Paternal effects explained 20.24% of the total variance, which was 2-fold higher than the maternal effects (10.73%) in Ide, while paternal effects explained 18.9% of the total variance, which was 15-fold higher than the maternal effects (1.3%) in Northern pike. Together, these results indicate that male effects are of major importance during embryonic development for these species. Furthermore, this study demonstrates that genetic compatibility between sires and dams plays an important role and needs to be taken into consideration for reproduction of these and likely other economically important fish species.
与母本贡献相比，父本贡献被认为对鱼类胚胎发育和幼体适应性特征的影响有限。因此，雄性对早期生活史特征的影响这一观点受到了审视。本研究旨在确定父本和母本对圆腹雅罗鱼和白斑狗鱼有眼胚胎发育速率的影响。利用定量遗传育种设计，将每个物种的5个雄鱼和5个雌鱼进行杂交，并将每个物种产生的25个同胞组饲养至胚胎有眼阶段。然后，我们使用限制最大似然法（REML）模型将胚胎表型表现的变异划分为母本、父本和父母本互作效应。结果表明，父本、母本以及父本×母本互作效应在两个物种中均高度显著；清楚地表明某些家系组合比其他组合更具兼容性。父本效应解释了总变异的20.24%，这比圆腹雅罗鱼的母本效应（10.73%）高2倍，而父本效应解释了白斑狗鱼总变异的18.9%，这比其母本效应（1.3%）高15倍。这些结果共同表明，对于这些物种而言，雄性效应在胚胎发育过程中至关重要。此外，本研究表明，雄鱼和雌鱼之间的遗传兼容性起着重要作用，在这些以及其他可能具有经济重要性的鱼类繁殖过程中需要加以考虑。
