Variation in foraging activity influences area-restricted search behaviour by bottlenose dolphins.

ABSTRACT: Area-restricted search (ARS) behaviour is commonly used to characterize spatio-temporal variation in foraging activity of predators, but evidence of the drivers underlying this behaviour in marine systems is sparse. Advances in underwater sound recording techniques and automated processing of acoustic data now provide opportunities to investigate these questions where species use different vocalizations when encountering prey. Here, we used passive acoustics to investigate drivers of ARS behaviour in a population of dolphins and determined if residency in key foraging areas increased following encounters with prey. Analyses were based on two independent proxies of foraging: echolocation buzzes (widely used as foraging proxies) and bray calls (vocalizations linked to salmon predation attemp

SUBMITTER: Fernandez-Betelu O 

PROVIDER: S-EPMC10265022 | biostudies-literature | 2023 Jun

REPOSITORIES: biostudies-literature