Transcriptomic responses of Atlantic salmon (Salmo salar) to environmental enrichment during juvenile rearing

PloS One
M L EvansIan A Fleming

Abstract

Captive rearing programs (hatcheries) are often used in conservation and management efforts for at-risk salmonid fish populations. However, hatcheries typically rear juveniles in environments that contrast starkly with natural conditions, which may lead to phenotypic and/or genetic changes that adversely affect the performance of juveniles upon their release to the wild. Environmental enrichment has been proposed as a mechanism to improve the efficacy of population restoration efforts from captive-rearing programs; in this study, we examine the influence of environmental enrichment during embryo and yolk-sac larval rearing on the transcriptome of Atlantic salmon (Salmo salar). Full siblings were reared in either a hatchery environment devoid of structure or an environment enriched with gravel substrate. At the end of endogenous feeding by juveniles, we examined patterns of gene transcript abundance in head tissues using the cGRASP-designed Agilent 4×44K microarray. Significance analysis of microarrays (SAM) indicated that 808 genes were differentially transcribed between the rearing environments and a total of 184 gene ontological (GO) terms were over- or under-represented in this gene list, several associated with mitosis/cell...Continue Reading

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Citations

May 21, 2020·Molecular Ecology·Waldir M Berbel-FilhoSofia Consuegra
May 1, 2021·Comparative Biochemistry and Physiology. Part D, Genomics & Proteomics·Stefan ReiserJochen Trautner
May 5, 2021·Journal of Fish Biology·Nick A R JonesAnne Gro Vea Salvanes

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Datasets Mentioned

BETA
GSE25938
GSE63982

Methods Mentioned

BETA
PCA

Software Mentioned

BLASTx
cGRASP
SAM
Significance Analysis of Microarrays ( SAM
ScanExpress
Imagene
Genesis
Blast2GO
siggenes
mArray

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