Size does matter : the eco-evolutionary effects of changing body size in fish
Ahti, P. A., Kuparinen, A., & Uusi-Heikkilä, S. (2020). Size does matter : the eco-evolutionary effects of changing body size in fish. Environmental Reviews, 28(3), 311-324. https://doi.org/10.1139/er-2019-0076
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Environmental ReviewsDate
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© Canadian Science Publishing, 2020
Body size acts as a proxy for many fitness-related traits. Body size is also subject to directional selection from various anthropogenic stressors such as increasing water temperature, decreasing dissolved oxygen, fisheries, as well as natural predators. Changes in individual body size correlate with changes in fecundity, behaviour, and survival, and can propagate through populations and ecosystems by truncating age and size structures and changing predator-prey dynamics. In this review, we will explore the causes and consequences of changing body size in fish in the light of recent literature and relevant theories. We will investigate the central role of body size in ecology by first discussing the main selective agents that influence body size: fishing, increasing water temperature, decreasing dissolved oxygen, and predation. We will then explore the impacts of these changes at the individual, population and ecosystem levels. Considering the relatively high heritability of body size, we will discuss how a change in body size can leave a genetic signature in the population and translate to a change in the evolutionary potential of the species.
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Canadian Science PublishingISSN Search the Publication Forum
1181-8700Publication in research information system
https://converis.jyu.fi/converis/portal/detail/Publication/35363093
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