Fatty acids and stable isotopes (13C, 15N) in southern right whale Eubalaena australis calves in relation toage and mortality at Peninsula Valdes, Argentina
Baleen whales accumulate fat reserves during the summer to sustain reproduction while fasting in the winter. The southern right whale Eubalaena australis population that calves off Península Valdés, Argentina, experienced high calf mortality events from 2003 to 2013 and poor nutritional states of mo...
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ftconicet:oai:ri.conicet.gov.ar:11336/118385 2023-10-09T21:50:10+02:00 Fatty acids and stable isotopes (13C, 15N) in southern right whale Eubalaena australis calves in relation toage and mortality at Peninsula Valdes, Argentina Marón, Carina Flavia Budge, Suzanne M. Ward, Robert E. Valenzuela, Luciano Oscar Di Martino, Matías Ricciardi, Marcos Sironi, Mariano Uhart, Marcela Seger, Jon Rowntree, Victoria J. application/pdf http://hdl.handle.net/11336/118385 eng eng Inter-Research info:eu-repo/semantics/altIdentifier/url/https://www.int-res.com/prepress/m13387.html info:eu-repo/semantics/altIdentifier/doi/10.3354/meps13387 http://hdl.handle.net/11336/118385 Marón, Carina Flavia; Budge, Suzanne M.; Ward, Robert E.; Valenzuela, Luciano Oscar; Di Martino, Matías; et al.; Fatty acids and stable isotopes (13C, 15N) in southern right whale Eubalaena australis calves in relation toage and mortality at Peninsula Valdes, Argentina; Inter-Research; Marine Ecology Progress Series; 646; 7-2020; 189-200 0171-8630 CONICET Digital CONICET info:eu-repo/semantics/restrictedAccess https://creativecommons.org/licenses/by-nc-sa/2.5/ar/ FATTY ACIDS CALVES DIET BLUBBER MORTALITY CARBON-13 NITROGEN-15 NUTRITIONANL STATUS GROWTH https://purl.org/becyt/ford/1.6 https://purl.org/becyt/ford/1 info:eu-repo/semantics/article info:ar-repo/semantics/artículo info:eu-repo/semantics/publishedVersion ftconicet https://doi.org/10.3354/meps13387 2023-09-24T19:51:20Z Baleen whales accumulate fat reserves during the summer to sustain reproduction while fasting in the winter. The southern right whale Eubalaena australis population that calves off Península Valdés, Argentina, experienced high calf mortality events from 2003 to 2013 and poor nutritional states of mothers could be a contributing cause. Previous studies found that the population’s reproductive success is influenced by prey availability. Mothers unable to build sufficient fat reserves or feeding on prey with different nutritional value may fail to meet the demands of lactation. Milk is the only source of nutrients and energy for calves at Valdés, so their fatty acids (FAs) and stable isotopes should reflect their mother’s diet and feeding-ground locations. Here, we compared FA profiles and C and N stable isotopes of dead calves with those of living calves to evaluate the potential impact of maternal nutrition on calf survival. We found no differences in the FA composition of blubber in dead and living calves, indicating similar maternal diets. Likewise, the isotopic values of living and dead calves imply that their mothers had similar foraging ranges. However, FA composition was greatly affected by calf length, indicating effects of calf age and duration of nursing. These findings suggest that mothers of dead calves did not feed on different diets or feeding grounds compared to mothers of living calves. Future research should further assess the overall health and body condition of the Valdés southern right whale calves. Fil: Marón, Carina Flavia. Universidad Nacional de Córdoba. Facultad de Ciencias Exactas, Físicas y Naturales. Departamento de Diversidad Biológica y Ecológica; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina. Instituto de Conservación de Ballenas; Argentina Fil: Budge, Suzanne M. Dalhousie University Halifax; Canadá Fil: Ward, Robert E. Utah State University; Estados Unidos Fil: Valenzuela, Luciano Oscar. Universidad Nacional del Centro de la Provincia de ... Article in Journal/Newspaper baleen whales Southern Right Whale CONICET Digital (Consejo Nacional de Investigaciones Científicas y Técnicas) Argentina Ballenas ENVELOPE(-64.167,-64.167,-65.183,-65.183) Marine Ecology Progress Series 646 189 200 |
institution |
Open Polar |
collection |
CONICET Digital (Consejo Nacional de Investigaciones Científicas y Técnicas) |
op_collection_id |
ftconicet |
language |
English |
topic |
FATTY ACIDS CALVES DIET BLUBBER MORTALITY CARBON-13 NITROGEN-15 NUTRITIONANL STATUS GROWTH https://purl.org/becyt/ford/1.6 https://purl.org/becyt/ford/1 |
spellingShingle |
FATTY ACIDS CALVES DIET BLUBBER MORTALITY CARBON-13 NITROGEN-15 NUTRITIONANL STATUS GROWTH https://purl.org/becyt/ford/1.6 https://purl.org/becyt/ford/1 Marón, Carina Flavia Budge, Suzanne M. Ward, Robert E. Valenzuela, Luciano Oscar Di Martino, Matías Ricciardi, Marcos Sironi, Mariano Uhart, Marcela Seger, Jon Rowntree, Victoria J. Fatty acids and stable isotopes (13C, 15N) in southern right whale Eubalaena australis calves in relation toage and mortality at Peninsula Valdes, Argentina |
topic_facet |
FATTY ACIDS CALVES DIET BLUBBER MORTALITY CARBON-13 NITROGEN-15 NUTRITIONANL STATUS GROWTH https://purl.org/becyt/ford/1.6 https://purl.org/becyt/ford/1 |
description |
Baleen whales accumulate fat reserves during the summer to sustain reproduction while fasting in the winter. The southern right whale Eubalaena australis population that calves off Península Valdés, Argentina, experienced high calf mortality events from 2003 to 2013 and poor nutritional states of mothers could be a contributing cause. Previous studies found that the population’s reproductive success is influenced by prey availability. Mothers unable to build sufficient fat reserves or feeding on prey with different nutritional value may fail to meet the demands of lactation. Milk is the only source of nutrients and energy for calves at Valdés, so their fatty acids (FAs) and stable isotopes should reflect their mother’s diet and feeding-ground locations. Here, we compared FA profiles and C and N stable isotopes of dead calves with those of living calves to evaluate the potential impact of maternal nutrition on calf survival. We found no differences in the FA composition of blubber in dead and living calves, indicating similar maternal diets. Likewise, the isotopic values of living and dead calves imply that their mothers had similar foraging ranges. However, FA composition was greatly affected by calf length, indicating effects of calf age and duration of nursing. These findings suggest that mothers of dead calves did not feed on different diets or feeding grounds compared to mothers of living calves. Future research should further assess the overall health and body condition of the Valdés southern right whale calves. Fil: Marón, Carina Flavia. Universidad Nacional de Córdoba. Facultad de Ciencias Exactas, Físicas y Naturales. Departamento de Diversidad Biológica y Ecológica; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina. Instituto de Conservación de Ballenas; Argentina Fil: Budge, Suzanne M. Dalhousie University Halifax; Canadá Fil: Ward, Robert E. Utah State University; Estados Unidos Fil: Valenzuela, Luciano Oscar. Universidad Nacional del Centro de la Provincia de ... |
format |
Article in Journal/Newspaper |
author |
Marón, Carina Flavia Budge, Suzanne M. Ward, Robert E. Valenzuela, Luciano Oscar Di Martino, Matías Ricciardi, Marcos Sironi, Mariano Uhart, Marcela Seger, Jon Rowntree, Victoria J. |
author_facet |
Marón, Carina Flavia Budge, Suzanne M. Ward, Robert E. Valenzuela, Luciano Oscar Di Martino, Matías Ricciardi, Marcos Sironi, Mariano Uhart, Marcela Seger, Jon Rowntree, Victoria J. |
author_sort |
Marón, Carina Flavia |
title |
Fatty acids and stable isotopes (13C, 15N) in southern right whale Eubalaena australis calves in relation toage and mortality at Peninsula Valdes, Argentina |
title_short |
Fatty acids and stable isotopes (13C, 15N) in southern right whale Eubalaena australis calves in relation toage and mortality at Peninsula Valdes, Argentina |
title_full |
Fatty acids and stable isotopes (13C, 15N) in southern right whale Eubalaena australis calves in relation toage and mortality at Peninsula Valdes, Argentina |
title_fullStr |
Fatty acids and stable isotopes (13C, 15N) in southern right whale Eubalaena australis calves in relation toage and mortality at Peninsula Valdes, Argentina |
title_full_unstemmed |
Fatty acids and stable isotopes (13C, 15N) in southern right whale Eubalaena australis calves in relation toage and mortality at Peninsula Valdes, Argentina |
title_sort |
fatty acids and stable isotopes (13c, 15n) in southern right whale eubalaena australis calves in relation toage and mortality at peninsula valdes, argentina |
publisher |
Inter-Research |
url |
http://hdl.handle.net/11336/118385 |
long_lat |
ENVELOPE(-64.167,-64.167,-65.183,-65.183) |
geographic |
Argentina Ballenas |
geographic_facet |
Argentina Ballenas |
genre |
baleen whales Southern Right Whale |
genre_facet |
baleen whales Southern Right Whale |
op_relation |
info:eu-repo/semantics/altIdentifier/url/https://www.int-res.com/prepress/m13387.html info:eu-repo/semantics/altIdentifier/doi/10.3354/meps13387 http://hdl.handle.net/11336/118385 Marón, Carina Flavia; Budge, Suzanne M.; Ward, Robert E.; Valenzuela, Luciano Oscar; Di Martino, Matías; et al.; Fatty acids and stable isotopes (13C, 15N) in southern right whale Eubalaena australis calves in relation toage and mortality at Peninsula Valdes, Argentina; Inter-Research; Marine Ecology Progress Series; 646; 7-2020; 189-200 0171-8630 CONICET Digital CONICET |
op_rights |
info:eu-repo/semantics/restrictedAccess https://creativecommons.org/licenses/by-nc-sa/2.5/ar/ |
op_doi |
https://doi.org/10.3354/meps13387 |
container_title |
Marine Ecology Progress Series |
container_volume |
646 |
container_start_page |
189 |
op_container_end_page |
200 |
_version_ |
1779313231988260864 |