The role of energy reserves in common carp performance inferred from phenotypic and genetic parameters

Type Article
Date 2021-08
Language English
Author(s) Zhao Jinfeng1, Prchal Martin1, Kause Antti2, Vandeputte MarcORCID3, 4, Gela David1, Kroupová Hana Kocour1, Piačková Veronika1, Šauer Pavel1, Steinbach Christoph1, Allamellou Jean-Michel5, Palaiokostas Christos6, Houston Ross D.7, Kocour Martin1
Affiliation(s) 1 : University of South Bohemia in České Budějovice, Faculty of Fisheries and Protection of Waters, South Bohemian Research Center of Aquaculture and Biodiversity of Hydrocenoses, Zátiší 728/II, 389 25 Vodňany, Czech Republic
2 : Natural Resources Institute Finland (Luke), Animal Genetics, FI-31600 Jokioinen, Finland
3 : Université Paris-Saclay, INRAE, AgroParisTech, GABI, F-78350 Jouy-en-Josas, France
4 : Ifremer, Chemin de Maguelone, F-34250 Palavas-les-Flots, France
5 : LABOGENA-DNA, 78350 Jouy-en-Josas, France
6 : Department of Animal Breeding and Genetics, Swedish University of Agricultural Sciences, Box 7090, 750 07 Uppsala, Sweden
7 : The Roslin Institute and Royal (Dick) School of Veterinary Studies, University of Edinburgh, Easter Bush, Midlothian EH25 9RG, Scotland, United Kingdom
Source Aquaculture (0044-8486) (Elsevier BV), 2021-08 , Vol. 541 , P. 736799 (12p.)
DOI 10.1016/j.aquaculture.2021.736799
Keyword(s) Fat, Genetic variance, Glycogen, Heritability, Lipids, Overwintering
Abstract

In temperate zones, energy reserves of fish are closely related to survival during the first winter of their life. In this study, the genetic and phenotypic background of the accumulation, mobilization and utilization of energy reserves was investigated in Amur mirror carp. To achieve this, the role of traits related to energy reserves on fish performance during the first winter and further periods of rearing was investigated. The experimental stock was established by four full-factorial matings of 5 dams and 10 sires to generate up to 200 full-sibling families. The offspring were sampled before and after the first winter rearing period. Seasonal variation in direct and indirect measures of energy status was examined using Fulton's condition factor (FC), hepato-somatic index (HSI), visceral index (VSI_NO), glycogen, fat and protein in hepatopancreas (HP) and muscle fat content. Other performance traits were also recorded (weight, resistance to koi herpesvirus disease). All traits related to energy reserves, except HP protein, were significantly lower after the first winter. Overall, HP glycogen and fat from muscle, HP and viscera were mobilized during winter. However, genetic correlations between same traits recorded in autumn and spring were lower than 0.8 for most of the traits, implying that not all families responded to overwintering in a similar manner. Heritability also differed before and after the first winter. Before the first winter, all traits had low to medium heritability (0.05–0.35), but after the winter the same traits were moderately or highly heritable (0.22–0.58). Interestingly, HP glycogen traits, unlike HP fat and HP protein, and HSI recorded in yearlings were positively genetically correlated with survival during the third growing season (rg = 0.49–0.72). This study provides the first evidence of a genetically based strategy for energy mobilization related to overwintering of common carp. Measuring of FC and HSI could be used to monitor the energy status of common carp and to provide a supplementary tool for management of carp stocks.

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Zhao Jinfeng, Prchal Martin, Kause Antti, Vandeputte Marc, Gela David, Kroupová Hana Kocour, Piačková Veronika, Šauer Pavel, Steinbach Christoph, Allamellou Jean-Michel, Palaiokostas Christos, Houston Ross D., Kocour Martin (2021). The role of energy reserves in common carp performance inferred from phenotypic and genetic parameters. Aquaculture, 541, 736799 (12p.). Publisher's official version : https://doi.org/10.1016/j.aquaculture.2021.736799 , Open Access version : https://archimer.ifremer.fr/doc/00690/80245/