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dc.contributor.author
Grandi, Maria Florencia  
dc.contributor.author
Rosa de Oliveira, Larissa  
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Dans, Silvana Laura  
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Crespo, Enrique Alberto  
dc.date.available
2019-01-29T19:36:33Z  
dc.date.issued
2012-04  
dc.identifier.citation
Grandi, Maria Florencia; Rosa de Oliveira, Larissa; Dans, Silvana Laura; Crespo, Enrique Alberto; A hunted population in recovery: Effective population size for South American sea lions from Patagonia; Brill Academic Publishers; Animal Biology; 62; 4; 4-2012; 433-450  
dc.identifier.issn
1570-7563  
dc.identifier.uri
http://hdl.handle.net/11336/68881  
dc.description.abstract
Effective population size (Ne) is a parameter of central importance in evolutionary biology and conservation. Factors such as unequal sex ratios of breeding individuals, periodic fluctuation in population size and variance in reproductive success can affect the Ne in general. At present, South American sea lions, Otaria flavescens, from northern Patagonia, Argentina, belongs to one of the several populations that are recovering from overhunting which occurred in the early 20th century. Here, we present the estimate of Ne for this population that takes into account the effects of their polygynous mating system and variation in population size through time. The resultant overall Nes were 4171 ± 2450 or 4745 ± 2681 breeding animals depending on the inclusion of peripheral adult males. The estimated Nes are not critical, because they are close to the average mean minimum viable population for vertebrates (5000 breeding adults). Even though the northern Patagonian population of O. flavescens is increasing its abundance is still far below its historical numbers. The Ne estimated should be considered the minimum range to be maintained, especially in light of bycatch related to fishery interactions along the Patagonian coast. We emphasise the importance of estimating Ne for future management plans of the species within different populations. © 2012 Koninklijke Brill NV, Leiden.  
dc.format
application/pdf  
dc.language.iso
eng  
dc.publisher
Brill Academic Publishers  
dc.rights
info:eu-repo/semantics/restrictedAccess  
dc.rights.uri
https://creativecommons.org/licenses/by-nc-sa/2.5/ar/  
dc.subject
Alternative Mating Systems  
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Conservation Implications  
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Effective Population Size  
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Otaria Flavescens  
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Recovery Population  
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South America Sea Lion  
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Otras Ciencias Biológicas  
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Ciencias Biológicas  
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CIENCIAS NATURALES Y EXACTAS  
dc.title
A hunted population in recovery: Effective population size for South American sea lions from Patagonia  
dc.type
info:eu-repo/semantics/article  
dc.type
info:ar-repo/semantics/artículo  
dc.type
info:eu-repo/semantics/publishedVersion  
dc.date.updated
2018-12-05T14:35:02Z  
dc.journal.volume
62  
dc.journal.number
4  
dc.journal.pagination
433-450  
dc.journal.pais
Países Bajos  
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Leiden  
dc.description.fil
Fil: Grandi, Maria Florencia. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Centro Nacional Patagónico; Argentina  
dc.description.fil
Fil: Rosa de Oliveira, Larissa. Universidade do Vale do Rio dos Sinos ; Brasil. Grupo de Estudos de Mamíferos Aquáticos do Rio Grande do Sul; Brasil  
dc.description.fil
Fil: Dans, Silvana Laura. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Centro Nacional Patagónico; Argentina. Universidad Nacional de la Patagonia San Juan Bosco; Argentina  
dc.description.fil
Fil: Crespo, Enrique Alberto. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Centro Nacional Patagónico; Argentina. Universidad Nacional de la Patagonia San Juan Bosco; Argentina  
dc.journal.title
Animal Biology  
dc.relation.alternativeid
info:eu-repo/semantics/altIdentifier/url/https://brill.com/view/journals/ab/ab-overview.xml  
dc.relation.alternativeid
info:eu-repo/semantics/altIdentifier/doi/http://dx.doi.org/10.1163/157075612X642941