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Journal article
Environmental enrichment induces intergenerational behavioural and epigenetic effects on fish
Molecular ecology, Vol.29(12), pp.2288-2299
06/2020
PMID: 32434269
Web of Science ID: WOS:000540763000001
Abstract
Parental effects influence offspring phenotypes through pre- and post-natal routes but little is known about their molecular basis, and therefore their adaptive significance. Epigenetic modifications, which control gene expression without changes in the DNA sequence and are influenced by the environment, may contribute to parental effects. We investigated the effects of environmental enrichment on the behaviour, metabolic rate and brain DNA methylation patterns of parents and offspring of the highly inbreed mangrove killifish (Kryptolebias marmoratus). Parental fish reared in enriched environments had lower cortisol levels, lower metabolic rates and were more active and neophobic than those reared in barren environments. They also differed in 1,854 methylated cytosines (DMCs). Offspring activity and neophobia were determined by the parental environment. Among the DMCs of the parents, 98 followed the same methylation patterns in the offspring, three of which were significantly influenced by parental environments irrespective of their own rearing environment. Our results suggest that parental environment influences the behaviour and, to some extent, the brain DNA methylation patterns of the offspring.
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- Title
- Environmental enrichment induces intergenerational behavioural and epigenetic effects on fish
- Publication Details
- Molecular ecology, Vol.29(12), pp.2288-2299
- Resource Type
- Journal article
- Publisher
- Wiley
- Number of pages
- 12
- Grant note
- 233161/2014-7 / Conselho Nacional de Desenvolvimento Cientifico e Tecnologico; Conselho Nacional de Desenvolvimento Cientifico e Tecnologico (CNPQ)
- Copyright
- © 2020 The Authors.
- Identifiers
- WOS:000540763000001; 99380568996206600
- Academic Unit
- Biology
- Language
- English