Time and behavioral adjustments to lactation: Insights from a marine predator

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dc.contributor.authorBorras-Chavez, Renato
dc.contributor.authorGoebel, Michael E.
dc.contributor.authorVillegas-Amtmann, Stella
dc.contributor.authorHuckstadt, Luis A.
dc.contributor.authorRivera-Rebella, Carla
dc.contributor.authorCosta, Daniel P.
dc.contributor.authorFarina, Jose M.
dc.contributor.authorBozinovic, Francisco
dc.date.accessioned2025-01-20T20:21:07Z
dc.date.available2025-01-20T20:21:07Z
dc.date.issued2023
dc.description.abstractThe energetic costs of lactation have been studied in many marine mammals, but little is known about the behavioral adjustments needed to cope with this event. By simultaneously measuring foraging behavior of lactating and nonlactating Antarctic fur seal females, we estimate the behavioral changes necessary to cope with the constraints of lactation and include the first comparative record of dive behavior between lactating and nonlactating female otariids. Nonlactating females exhibited highly variable foraging trip durations and spent long times onshore between trips. In contrast, lactating females exhibited consistently shorter trips and spent half the time hauled-out compared to nonlactating females likely to maximize offspring provisioning. Lactating females show a reduced mean time per dive but greater percentage of time per trip spent diving compared to nonlactating animals. The reduction in time onshore and trip duration, together with modifications in dive performance suggests additional effort of lactating females to compensate for the constraints of rearing a pup, which has not been observed previously due to the lack of simultaneous comparison of lactating and nonlactating individuals. When possible, future studies of maternal investment should also include nonlactating individuals, since lactation may have a strong synergistic effect with other aspects shaping foraging behavior.
dc.fuente.origenWOS
dc.identifier.doi10.1111/mms.12970
dc.identifier.eissn1748-7692
dc.identifier.issn0824-0469
dc.identifier.urihttps://doi.org/10.1111/mms.12970
dc.identifier.urihttps://repositorio.uc.cl/handle/11534/92613
dc.identifier.wosidWOS:000844547300001
dc.issue.numero1
dc.language.isoen
dc.pagina.final150
dc.pagina.inicio131
dc.revistaMarine mammal science
dc.rightsacceso restringido
dc.subjectAntarctic fur seal
dc.subjectArctocephalus gazella
dc.subjectbreeding
dc.subjectdiving behavior
dc.subjectforaging ecology
dc.subjectlactation
dc.subjectotariids
dc.subject.ods14 Life Below Water
dc.subject.odspa14 Vida submarina
dc.titleTime and behavioral adjustments to lactation: Insights from a marine predator
dc.typeartículo
dc.volumen39
sipa.indexWOS
sipa.trazabilidadWOS;2025-01-12
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