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From gametogenesis to spawning: how climate-driven warming affects teleost reproductive biology

Citation

Alix, M and Kjesbu, OS and Anderson, KC, From gametogenesis to spawning: how climate-driven warming affects teleost reproductive biology, Journal of Fish Biology, 97, (3) pp. 607-632. ISSN 0022-1112 (2020) [Refereed Article]


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Copyright Statement

Copyright 2020 The Authors. Licensed under Creative Commons Attribution 4.0 International (CC BY 4.0) https://creativecommons.org/licenses/by/4.0/

DOI: doi:10.1111/jfb.14439

Abstract

Ambient temperature modulates reproductive processes, especially in poikilotherms such as teleosts. Consequently, global warming is expected to impact the reproductive function of fish, which has implications for wild population dynamics, fisheries, and aquaculture. In this extensive review spanning tropical and cold‐water environments, we examine the impact of higher‐than‐optimal temperatures on teleost reproductive development and physiology across reproductive stages, species, generations, and sexes. In doing so, we demonstrate that warmer‐than‐optimal temperatures can affect every stage of reproductive development from puberty through to the act of spawning, and these responses are mediated by age at spawning and are associated with changes in physiology at multiple levels of the brain‐pituitary‐gonad axis. Response to temperature is often species‐specific, and changes with environmental history/transgenerational conditioning, and the amplitude, timing, and duration of thermal exposure within a generation. Thermally‐driven changes to physiology, gamete development and maturation typically culminate in poor sperm and oocyte quality, and/or advancement/delay/inhibition of ovulation/spermiation and spawning. Although the field of teleost reproduction and temperature is advanced in many respects, we identify areas where research is lacking, especially for males and egg quality from "omics" perspectives. Climate‐driven warming will continue to disturb teleost reproductive performance and therefore guide future research, especially in the emerging areas of transgenerational acclimation and epigenetic studies, which will help to understand and project climate change impacts on wild populations and could also have implications for aquaculture.

Item Details

Item Type:Refereed Article
Keywords:fish biology, cod, fisheries management, spawning, fish reproduction, climate change, temperature, gametogenesis
Research Division:Agricultural, Veterinary and Food Sciences
Research Group:Fisheries sciences
Research Field:Fisheries sciences not elsewhere classified
Objective Division:Expanding Knowledge
Objective Group:Expanding knowledge
Objective Field:Expanding knowledge in the biological sciences
UTAS Author:Anderson, KC (Dr Kelli Anderson)
ID Code:139649
Year Published:2020
Web of Science® Times Cited:5
Deposited By:Fisheries and Aquaculture
Deposited On:2020-06-24
Last Modified:2021-02-03
Downloads:5 View Download Statistics

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