Maturation in Atlantic salmon (Salmo salar, Salmonidae) : a synthesis of ecological, genetic, and molecular processes

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Mobley , K B , Aykanat , T , Czorlich , Y , House , A , Kurko , J , Miettinen , A , Moustakas-Verho , J , Salgado , A , Sinclair-Waters , M , Verta , J-P & Primmer , C R 2021 , ' Maturation in Atlantic salmon (Salmo salar, Salmonidae) : a synthesis of ecological, genetic, and molecular processes ' , Reviews in Fish Biology and Fisheries , vol. 31 , no. 3 , pp. 523-571 . https://doi.org/10.1007/s11160-021-09656-w

Title: Maturation in Atlantic salmon (Salmo salar, Salmonidae) : a synthesis of ecological, genetic, and molecular processes
Author: Mobley, Kenyon B.; Aykanat, Tutku; Czorlich, Yann; House, Andrew; Kurko, Johanna; Miettinen, Antti; Moustakas-Verho, Jacqueline; Salgado, Andres; Sinclair-Waters, Marion; Verta, Jukka-Pekka; Primmer, Craig R.
Contributor organization: Organismal and Evolutionary Biology Research Programme
Evolution, Conservation, and Genomics
Biosciences
Genetics
Institute of Biotechnology
Helsinki Institute of Sustainability Science (HELSUS)
Date: 2021-09
Language: eng
Number of pages: 49
Belongs to series: Reviews in Fish Biology and Fisheries
ISSN: 0960-3166
DOI: https://doi.org/10.1007/s11160-021-09656-w
URI: http://hdl.handle.net/10138/333165
Abstract: Over the past decades, Atlantic salmon (Salmo salar, Salmonidae) has emerged as a model system for sexual maturation research, owing to the high diversity of life history strategies, knowledge of trait genetic architecture, and their high economic value. The aim of this synthesis is to summarize the current state of knowledge concerning maturation in Atlantic salmon, outline knowledge gaps, and provide a roadmap for future work. We summarize the current state of knowledge: 1) maturation in Atlantic salmon takes place over the entire life cycle, starting as early as embryo development, 2) variation in the timing of maturation promotes diversity in life history strategies, 3) ecological and genetic factors influence maturation, 4) maturation processes are sex-specific and may have fitness consequences for each sex, 5) genomic studies have identified large-effect loci that influence maturation, 6) the brain-pituitary-gonadal axis regulates molecular and physiological processes of maturation, 7) maturation is a key component of fisheries, aquaculture, conservation, and management, and 8) climate change, fishing pressure, and other anthropogenic stressors likely have major effects on salmon maturation. In the future, maturation research should focus on a broader diversity of life history stages, including early embryonic development, the marine phase and return migration. We recommend studies combining ecological and genetic approaches will help disentangle the relative contributions of effects in different life history stages to maturation. Functional validation of large-effect loci should reveal how these genes influence maturation. Finally, continued research in maturation will improve our predictions concerning how salmon may adapt to fisheries, climate change, and other future challenges.
Subject: Brain-pituitary-gonadal axis
Genome-wide association mapping
Life history stage
Life history traits
Puberty
Reproduction
ALTERNATIVE REPRODUCTIVE TACTICS
EARLY SEXUAL-MATURATION
LIFE-HISTORY VARIATION
ZEBRAFISH DANIO-RERIO
GONADOTROPINS GTH-I
POST-SMOLT GROWTH
SUB-ARCTIC RIVER
THRESHOLD REACTION NORMS
QUANTITATIVE TRAIT LOCI
PITUITARY-GONADAL AXIS
1181 Ecology, evolutionary biology
1184 Genetics, developmental biology, physiology
Peer reviewed: Yes
Rights: cc_by
Usage restriction: openAccess
Self-archived version: publishedVersion


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