Social interactions shape the timing of spawning migrations in an anadromous fish

Berdahl, Andrew M.; Westley, Peter A. H.; Quinn, Thomas P.

doi:10.1016/j.anbehav.2017.01.020

Cited by 43 publications

(54 citation statements)

References 69 publications

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“…Besides extensive research on how abiotic cues influence migratory timing it has been proposed that timing may be modulated by social interactions. Work by Berdahl et al (2017) suggests that migratory timing in sockeye salmon was better explained by social interactions (group migration) than by abiotic cues such as temperature and river flow. Environmental influences aside, there is evidence emerging that timing can be under genetic control and undergo rapid evolutionary change (Thompson et al, 2019).…”

Section: Variation Among and Within Individualsmentioning

confidence: 99%

Ecological and Evolutionary Consequences of Environmental Change and Management Actions for Migrating Fish

et al. 2019

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Migration strategies in fishes comprise a rich, ecologically important, and socioeconomically valuable example of biological diversity. The variation and flexibility in migration is evident between and within individuals, populations, and species, and thereby provides a useful model system that continues to inform how ecological and evolutionary processes mold biodiversity and how biological systems respond to environmental heterogeneity and change. Migrating fishes are targeted by commercial and recreational fishing and impact the functioning of aquatic ecosystems. Sadly, many species of migrating fish are under increasing threat by exploitation, pollution, habitat destruction, dispersal barriers, overfishing, and ongoing climate change that brings modified, novel, more variable and extreme conditions and selection regimes. All this calls for protection, sustainable utilization and adaptive management. However, the situation for migrating fishes is complicated further by actions aimed at mitigating the devastating effects of such threats. Changes in river connectivity associated with removal of dispersal barriers such as dams and construction of fishways, together with compensatory breeding, and supplemental stocking can impact on gene flow and selection. How this in turn affects the dynamics, genetic structure, genetic diversity, evolutionary potential, and viability of spawning migrating fish populations remains largely unknown. In this narrative review we describe and discuss patterns, causes, and consequences of variation and flexibility in fish migration that are scientifically interesting and concern key issues within the framework of evolution and maintenance of biological diversity. We showcase how the evolutionary solutions to key questions that define migrating fish-whether or not to migrate, why to migrate, where to migrate, and when to migrate-may depend on individual characteristics and ecological conditions. We explore links between environmental change and migration strategies, and discuss whether and how threats associated with overexploitation, environmental makeovers, and management actions may differently influence vulnerability of individuals, populations, and species depending on the variation and flexibility of their migration strategies. Our goal is to provide a broad overview of knowledge in this emerging area, spur future research, and development of informed management, and ultimately promote sustainable utilization and protection of migrating fish and their ecosystems.

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Section: Variation Among and Within Individualsmentioning

confidence: 99%

Ecological and Evolutionary Consequences of Environmental Change and Management Actions for Migrating Fish

et al. 2019

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“…Just as each individual may have an independent estimate of what direction to go, each individual might have an independent assessment of when to go. Social interactions do influence the timing of migration behaviour (Helm et al, 2006;Berdahl et al, 2017).…”

Section: Outlook and Future Directionsmentioning

confidence: 99%

Collective animal navigation and migratory culture: from theoretical models to empirical evidence

Berdahl

Kao

Flack

et al. 2017

Preprint

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Animals often travel in groups, and their navigational decisions can be influenced by social interactions. Both theory and empirical observations suggest that such collective navigation can result in individuals improving their ability to find their way and could be one of the key benefits of sociality for these species. Here we provide an overview of the potential mechanisms underlying collective navigation and review the known, and supposed, empirical evidence for such behaviour, and highlight interesting directions for future research. We further explore how both social and collective learning during group navigation could lead to the accumulation of knowledge at the population level, resulting in the emergence of migratory culture.

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“…Thus, social information can drive a range of behaviors, from mild conspecific attraction with no subsequent parallel behaviors (i.e., simple aggregation in space), to the highly synchronized individual actions that underpin the collective motion of flocks, herds, and schools [25,26]. Even loose, ephemeral associations among individuals can involve strong behavioral correlations driven by social information.…”

mentioning

confidence: 99%

Social Information Links Individual Behavior to Population and Community Dynamics

Gil

Hein

Spiegel

et al. 2018

Trends in Ecology & Evolution

137

198

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Social interactions shape the timing of spawning migrations in an anadromous fish

Cited by 43 publications

References 69 publications

Ecological and Evolutionary Consequences of Environmental Change and Management Actions for Migrating Fish

Ecological and Evolutionary Consequences of Environmental Change and Management Actions for Migrating Fish

Collective animal navigation and migratory culture: from theoretical models to empirical evidence

Social Information Links Individual Behavior to Population and Community Dynamics

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