Simulated maternal pre-spawning stress affects offspring's attributes in farmed Atlantic salmon Salmo salar (Linnaeus, 1758)

Eriksen, Marit Skog, Poppe, Trygve T., McCormick, Mark, Damsgard, Børge, Salte, Ragnar, Braastad, Bjarne O., and Bakken, Morten (2015) Simulated maternal pre-spawning stress affects offspring's attributes in farmed Atlantic salmon Salmo salar (Linnaeus, 1758). Aquaculture Research, 46 (6). pp. 1480-1489.

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Abstract

In fish hormones are released into the nutritive yolk sac during oogenesis in quantities that mirror female plasma levels, thus implying a potential for the maternal endocrine state at spawning to affect offspring characteristics. In the present study, mature female Atlantic salmon, Salmo salar, were given intraperitoneal cortisol implants to investigate potential impacts of simulated stress on offspring ontogeny. Maternal cortisol levels reduced fertilization success and affected several offspring characters: lowered initial survival rates, impaired growth early in life and increased prevalence of morphological abnormalities in adult individuals. In addition, offspring from cortisol administered females displayed increased locomotor activity in an acute confinement test. These results suggest that developmental trajectories of salmon offspring can be considerably altered if their mothers experience severe stress during the final stages of gametogenesis. The present findings may have conceptual and applied ramifications as they demonstrate a mechanism that links the maternal environment to subsequent viability of the progeny.

Item ID: 41976
Item Type: Article (Research - C1)
ISSN: 1365-2109
Keywords: prenatal stress, maternal effects, cortisol, fish welfare, offspring, salmon
Funders: Nowegian Research Council (NWC)
Projects and Grants: NWC Project No. 173261/10
Date Deposited: 08 Dec 2015 18:39
FoR Codes: 07 AGRICULTURAL AND VETERINARY SCIENCES > 0704 Fisheries Sciences > 070401 Aquaculture @ 50%
06 BIOLOGICAL SCIENCES > 0602 Ecology > 060205 Marine and Estuarine Ecology (incl Marine Ichthyology) @ 50%
SEO Codes: 83 ANIMAL PRODUCTION AND ANIMAL PRIMARY PRODUCTS > 8301 Fisheries - Aquaculture > 830102 Aquaculture Fin Fish (excl. Tuna) @ 50%
97 EXPANDING KNOWLEDGE > 970106 Expanding Knowledge in the Biological Sciences @ 50%
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