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dc.contributor.author
Leonardi, María Soledad  
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D'amico, Veronica Laura  
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Márquez, María Elba Isabel  
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Rogers, Tracey L.  
dc.contributor.author
Negrete, Javier  
dc.date.available
2020-10-01T13:19:43Z  
dc.date.issued
2019-10  
dc.identifier.citation
Leonardi, María Soledad; D'amico, Veronica Laura; Márquez, María Elba Isabel; Rogers, Tracey L.; Negrete, Javier; Leukocyte counts in three sympatric pack-ice seal species from the western Antarctic Peninsula; Springer; Polar Biology; 42; 10; 10-2019; 1801-1809  
dc.identifier.issn
0722-4060  
dc.identifier.uri
http://hdl.handle.net/11336/115233  
dc.description.abstract
Global warming, and its consequences, constitute one of the main stressors for organisms worldwide, affecting different factors such as the geographic distribution and the abundance of parasites, which in turn can affect the immune system of their hosts, and vice versa. Therefore, it is important to have baseline information on immune parameters of organisms in order to make future comparisons within this changing ecological context. Here, we report on the leukocyte counts of the Antarctic pack ice seals, the crabeater (Lobodon carcinophaga), Weddell (Leptonychotes weddellii) and leopard (Hydrurga leptonyx) seals, sampled off the western Antarctic Peninsula. We captured and sampled seals in the pack ice off the Danco Coast, Antarctica in the austral summers, January to March, of 2015 and 2016. The leukocyte counts, along with the counts of each different leukocyte (e.g., basophil, neutrophil, eosinophil, lymphocyte and monocyte), were made from blood smears viewed under the light microscope. As a potential stress indicator, we examined whether seals with lice, so presumably under greater physiological stress, had changes in leukocyte counts, including higher ratios of neutrophil-to-lymphocytes (N/L ratio). Leukocyte counts were different among the seal species. While crabeater and Weddell seals had higher neutrophil counts, followed by lymphocyte counts, leopard seals had the reverse pattern. Basophil, eosinophil, and lymphocyte counts were higher in the leopard seal, while the N/L ratio, as well as the neutrophil counts, were higher for the crabeater seal. We show, for the Weddell seal, that the animals with lice were more likely to have higher N/L ratios. This suggests that future research into the potential of the N/L index as a stress indicator, that incorporates additional stress parameters including cortisol concentrations, oxidative damage, as well as other measures of immune function, is warranted for the pack ice seals. Our results are a first step towards establishing leukocyte count baselines for the Antarctic pack ice seals off the western Antarctic Peninsula.  
dc.format
application/pdf  
dc.language.iso
eng  
dc.publisher
Springer  
dc.rights
info:eu-repo/semantics/restrictedAccess  
dc.rights.uri
https://creativecommons.org/licenses/by-nc-sa/2.5/ar/  
dc.subject
ANTARCTICA  
dc.subject
CRABEATER SEAL  
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HEALTH STATUS  
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LEOPARD SEAL  
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LEUKOCYTE COUNTS  
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WEDDELL SEAL  
dc.subject.classification
Conservación de la Biodiversidad  
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Ciencias Biológicas  
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CIENCIAS NATURALES Y EXACTAS  
dc.title
Leukocyte counts in three sympatric pack-ice seal species from the western Antarctic Peninsula  
dc.type
info:eu-repo/semantics/article  
dc.type
info:ar-repo/semantics/artículo  
dc.type
info:eu-repo/semantics/publishedVersion  
dc.date.updated
2020-08-04T19:38:58Z  
dc.journal.volume
42  
dc.journal.number
10  
dc.journal.pagination
1801-1809  
dc.journal.pais
Alemania  
dc.journal.ciudad
Berlin  
dc.description.fil
Fil: Leonardi, María Soledad. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Centro Nacional Patagónico. Instituto de Biología de Organismos Marinos; Argentina  
dc.description.fil
Fil: D'amico, Veronica Laura. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Centro Nacional Patagónico. Instituto de Biología de Organismos Marinos; Argentina  
dc.description.fil
Fil: Márquez, María Elba Isabel. Ministerio de Relaciones Exteriores y Culto. Direccion Nacional del Antartico. Instituto Antartico Argentino. Departamento de Biologia de Predadores Tope.; Argentina. Universidad Nacional de San Martín; Argentina  
dc.description.fil
Fil: Rogers, Tracey L.. University of New South Wales; Australia  
dc.description.fil
Fil: Negrete, Javier. University of New South Wales; Australia. Universidad Nacional de La Plata. Facultad de Ciencias Naturales y Museo; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - La Plata; Argentina  
dc.journal.title
Polar Biology  
dc.relation.alternativeid
info:eu-repo/semantics/altIdentifier/url/http://link.springer.com/10.1007/s00300-019-02551-y  
dc.relation.alternativeid
info:eu-repo/semantics/altIdentifier/doi/http://dx.doi.org/10.1007/s00300-019-02551-y