Behavior of Arctic fourhorn sculpin (Myoxocephalus quadricornis) beneath winter sea ice assessed with passive acoustic telemetry in Tremblay Sound (Baffin Island, Canada)

Environments change across space and time, often requiring organisms to exhibit behavioral responses. In the Arctic, migratory consumers are motivated by spring resources to follow receding ice; however, resident species’ responses to this ephemeral productivity are less well understood. We characterized the movement behaviors of relatively sedentary Arctic species of sculpin (Myoxocephalus spp.) in Tremblay Sound, Nunavut, Canada. Movements of individuals (n = 60) captured during the ice-free periods of 2017-2019 were monitored year-round via an array of acoustic telemetry receivers (n = 37). Telemetry data confirmed year-round residency within the Sound, yet sculpins were consistently more active and wider ranging during the ice-free period versus the ice-covered winters. Sequence analysis revealed distinct patterns of activity differentiated primarily by regional associations. Together, these results indicate sculpin are highly sedentary, but move more during the ice-free season, suggesting the importance of the seasonal productivity pulse to these fish. As resident species adapted to exploit the conditions within their local environment, sculpin provide a valuable indicator species to monitor coastal and benthic Arctic ecosystems that are experiencing rapid change.

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Year-round monitoring of Arctic species of sculpin to identify residency and seasonality of movement behavior

Hermann

Hammer

Hussey

et al. 2023

Can. J. Fish. Aquat. Sci.

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Behavior of Arctic fourhorn sculpin (Myoxocephalus quadricornis) beneath winter sea ice assessed with passive acoustic telemetry in Tremblay Sound (Baffin Island, Canada)

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References 35 publications

Year-round monitoring of Arctic species of sculpin to identify residency and seasonality of movement behavior

Year-round monitoring of Arctic species of sculpin to identify residency and seasonality of movement behavior

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