Lower marine productivity increases agonistic interactions between sea lions and fur seals in Northern Pacific Patagonia

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dc.contributor.authorMontalva, Felipe
dc.contributor.authorPaves, Hector
dc.contributor.authorPerez-Venegas, Diego
dc.contributor.authorBarrientos, Karin G. E.
dc.contributor.authorValencia, Carola
dc.contributor.authorMiranda-Urbina, Diego
dc.contributor.authorSeguel, Mauricio
dc.date.accessioned2025-01-20T21:13:04Z
dc.date.available2025-01-20T21:13:04Z
dc.date.issued2022
dc.description.abstractInterspecific interactions are key drivers of individual and population-level fitness in a wide range of animals. However, in marine ecosystems, it is relatively unknown which biotic and abiotic factors impact behavioral interactions between competing species. We assessed the impact of weather, marine productivity, and population structure on the behavioral agonistic interactions between South American fur seals (SAFSs), Arctocephalus australis, and South American sea lions (SASLs), Otaria byronia, in a breeding colony of SAFS. We hypothesized that agonistic interactions between SAFSs and SASLs respond to biotic and abiotic factors such as SAFS population structure, marine productivity, and weather. We found that SASL and SAFS interactions almost always resulted in negative impacts on the social structure or reproductive success of the SAFS colony. SASL adult males initiated stampedes of SAFS and/or abducted and predated SAFS pups. Adult SAFS males abundance and severe weather events were negatively correlated with agonistic interactions between species. However, proxies for lower marine productivity such as higher sea surface temperature and lower catches of demerso-pelagic fish were the most important predictors of more frequent agonistic interactions between SAFS and SASL. Under the current scenario of decline in marine biomass due to global climate change and overfishing, agonistic interactions between competing marine predators could increase and exacerbate the negative impacts of environmental change in these species.
dc.fuente.origenWOS
dc.identifier.doi10.1093/cz/zoac006
dc.identifier.eissn2396-9814
dc.identifier.issn1674-5507
dc.identifier.urihttps://doi.org/10.1093/cz/zoac006
dc.identifier.urihttps://repositorio.uc.cl/handle/11534/93688
dc.identifier.wosidWOS:000757886200001
dc.issue.numero6
dc.language.isoen
dc.pagina.final666
dc.pagina.inicio657
dc.revistaCurrent zoology
dc.rightsacceso restringido
dc.subjectinterspecific interactions
dc.subjectclimate change
dc.subjectGuafo Island
dc.subjectsea surface temperature
dc.subjectSouth American fur seal
dc.subjectSouth American sea lion
dc.subject.ods14 Life Below Water
dc.subject.odspa14 Vida submarina
dc.titleLower marine productivity increases agonistic interactions between sea lions and fur seals in Northern Pacific Patagonia
dc.typeartículo
dc.volumen68
sipa.indexWOS
sipa.trazabilidadWOS;2025-01-12
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