New northernmost distribution records of the Eastern South Pacific southern right whale (Eubalaena australis), including the first cases from Ecuador and northern Peru

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dc.contributor.authorCristina Castro Ayala
dc.contributor.authorAna M. García-Cegarra
dc.contributor.authorPiero Uceda-Vega
dc.contributor.authorLuis Aguilar
dc.contributor.authorShaleyla Kelez
dc.contributor.authorSusannah J. Buchan
dc.contributor.authorFernando Félix
dc.contributor.authorStephanie H. Stack
dc.contributor.authorKoen Van Waerebeek
dc.date.accessioned2026-05-05T19:32:08Z
dc.date.available2026-05-05T19:32:08Z
dc.date.issued2024
dc.description.abstractThe Eastern South Pacific Right Whale (SRW) (Eubalaena australis) population has gained interest due to its Critically Endangered conservation status. So far, this population has been confirmed only along the coasts of Chile (18˚20’S to 56˚30’S) and from southern to central Peru (17˚38’S to 12˚11’S). Recent records have extended the species’ known range, highlighting its geographic distribution, now reaching 1500 km north. Here, we report six recent records, consisting of five sightings and one stranding, that expand the documented range to northern Ecuador (0.6˚N). The northern extension of the population may be associated with the unusual three-year-long cold phase (La Niña) of the El Niño Southern Oscillation (ENSO) in the eastern South Pacific, population expansion, movement and redistribution of the species, increased monitoring effort, or a combination of these factors. These observations raise hope for the Critically Endangered SRW population, as the occurrence of mother-calf pairs may indicate a potential for population recovery. Nevertheless, these findings intensify concerns for what is still the least abundant SRW population, underscoring the urgency for more targeted research and conservation measures.
dc.description.sponsorshipPacific Whale Foundation Palo Santo Travel Agencia Nacional de Investigación y Desarrollo (Centro COPAS Coastal FB210021) Rufford Foundation (Rufford 2nd Small Grant No. 29456-2) Centro de Estudios Avanzados en Zonas Áridas FONDECYT (3210483)
dc.identifier.doi10.1371/journal.pone.0312528
dc.identifier.issn19326203
dc.identifier.urihttps://repositorioabierto.uantof.cl/handle/uantof/703
dc.language.isoen
dc.rightsAttribution 4.0 Internationalen
dc.rights.urihttp://creativecommons.org/licenses/by/4.0/
dc.sourcePLoS ONE
dc.titleNew northernmost distribution records of the Eastern South Pacific southern right whale (Eubalaena australis), including the first cases from Ecuador and northern Peru
dc.typeArticle
oaire.citation.volume19
organization.identifier.rorUniversidad de Antofagasta
uantof.identificator.facultyFacultad de Ciencias del Mar y Recursos Biológicos
uantof.identificator.instituteInstituto de Ciencias Naturales Alexander von Humboldt
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