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

The 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...

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Published in:PloS one 2024-11, Vol.19 (11), p.e0312528
Main Authors: Castro Ayala, Cristina, García-Cegarra, Ana M, Uceda-Vega, Piero, Aguilar, Luis, Kelez, Shaleyla, Buchan, Susannah J, Félix, Fernando, Stack, Stephanie H, Van Waerebeek, Koen
Format: Article
Language:English
Subjects:
Animals
Aquatic mammals
Biological monitoring
Biology and Life Sciences
Cetacea
Coasts
Conservation of Natural Resources
Conservation status
Diseases
Distribution records
Earth Sciences
Ecology and Environmental Sciences
Ecuador
El Nino
El Nino-Southern Oscillation
El Nino-Southern Oscillation event
Endangered Species
Environmental aspects
Eubalaena australis
Female
Genetic aspects
Geographical distribution
Growth
Health aspects
La Nina
Male
Methods
National parks
New records
People and places
Peru
Physical Sciences
Population
Population growth
Research ships
Science
Southern Oscillation
Stranding
Whales
Whales & whaling
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creator Castro Ayala, Cristina
García-Cegarra, Ana M
Uceda-Vega, Piero
Aguilar, Luis
Kelez, Shaleyla
Buchan, Susannah J
Félix, Fernando
Stack, Stephanie H
Van Waerebeek, Koen
description The 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 re-distribution 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.
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ispartof PloS one, 2024-11, Vol.19 (11), p.e0312528
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language eng
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source PubMed Central Free; Publicly Available Content (ProQuest)
subjects Animals
Aquatic mammals
Biological monitoring
Biology and Life Sciences
Cetacea
Coasts
Conservation of Natural Resources
Conservation status
Diseases
Distribution records
Earth Sciences
Ecology and Environmental Sciences
Ecuador
El Nino
El Nino-Southern Oscillation
El Nino-Southern Oscillation event
Endangered Species
Environmental aspects
Eubalaena australis
Female
Genetic aspects
Geographical distribution
Growth
Health aspects
La Nina
Male
Methods
National parks
New records
People and places
Peru
Physical Sciences
Population
Population growth
Research ships
Science
Southern Oscillation
Stranding
Whales
Whales & whaling
title 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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