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dc.contributor.author
Costa Gonçalves Portelinha, Thiago
dc.contributor.author
Malvásio, Adriana
dc.contributor.author
Piña, Carlos Ignacio
dc.contributor.author
Bertoluci, Jaime
dc.date.available
2018-02-23T18:45:27Z
dc.date.issued
2014-12
dc.identifier.citation
Costa Gonçalves Portelinha, Thiago; Malvásio, Adriana; Piña, Carlos Ignacio; Bertoluci, Jaime; Population structure of podocnemis expansa (Testudines: Podocnemididae) in Southern Brazilian amazon; Amer Soc Ichthyologists Herpetologists; Copeia; 2014; 4; 12-2014; 707-715
dc.identifier.issn
0045-8511
dc.identifier.uri
http://hdl.handle.net/11336/37041
dc.description.abstract
Detailed studies of the population structure of most species of turtles in the Amazon Basin are lacking throughout their range. We estimated sex ratio, size structure, relative abundance, and recapture index for the Giant South American River Turtle (Podocnemis expansa) in Javaés River, southern Brazilian Amazon. Field work was conducted between 2004 and 2009, and comprised a total sampling effort of 368 hours in 92 sampling days. Turtles were captured by diving and seining. A total of 645 individuals (156 adult males, 109 adult females, and 380 juveniles) were captured and marked, but only five were recaptured. Carapace length showed a unimodal pattern for males, but no clear pattern for females. The population consisted predominantly of adult males and young females, with a sex ratio of 1.4:1 (M:F). Relative abundance varied from 0-5.5 animals/h depending on the capture method employed. Most animals (73.7%) were concentrated in a single location on the river (1 km out of 40 km sampled) during the study period. Population monitoring on a long-term basis will be necessary to identify the real population structure, evaluate poaching pressure, and to support the conservation project which has been ongoing since 1985 in the area.
dc.format
application/pdf
dc.language.iso
eng
dc.publisher
Amer Soc Ichthyologists Herpetologists
dc.rights
info:eu-repo/semantics/openAccess
dc.rights.uri
https://creativecommons.org/licenses/by-nc-sa/2.5/ar/
dc.subject
Abundance
dc.subject
Conservation
dc.subject
Giant Amazon River Turtle
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Net Seining
dc.subject.classification
Otras Ciencias Biológicas
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Ciencias Biológicas
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CIENCIAS NATURALES Y EXACTAS
dc.title
Population structure of podocnemis expansa (Testudines: Podocnemididae) in Southern Brazilian amazon
dc.type
info:eu-repo/semantics/article
dc.type
info:ar-repo/semantics/artículo
dc.type
info:eu-repo/semantics/publishedVersion
dc.date.updated
2018-02-14T19:32:12Z
dc.journal.volume
2014
dc.journal.number
4
dc.journal.pagination
707-715
dc.journal.pais
Estados Unidos
dc.journal.ciudad
Lawrence
dc.description.fil
Fil: Costa Gonçalves Portelinha, Thiago. Universidade Federal de Tocantins; Brasil. Provincia de Entre Ríos. Centro de Investigaciones Científicas y Transferencia de Tecnología a la Producción. Universidad Autónoma de Entre Ríos. Centro de Investigaciones Científicas y Transferencia de Tecnología a la Producción. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Santa Fe. Centro de Investigaciones Científicas y Transferencia de Tecnología a la Producción; Argentina
dc.description.fil
Fil: Malvásio, Adriana. Universidade Federal de Tocantins; Brasil
dc.description.fil
Fil: Piña, Carlos Ignacio. Provincia de Entre Ríos. Centro de Investigaciones Científicas y Transferencia de Tecnología a la Producción. Universidad Autónoma de Entre Ríos. Centro de Investigaciones Científicas y Transferencia de Tecnología a la Producción. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Santa Fe. Centro de Investigaciones Científicas y Transferencia de Tecnología a la Producción; Argentina
dc.description.fil
Fil: Bertoluci, Jaime. Universidade Do Sao Paulo. Escola Superior de Agricultura Luiz de Queiroz Esalq; Brasil
dc.journal.title
Copeia
dc.relation.alternativeid
info:eu-repo/semantics/altIdentifier/doi/http://dx.doi.org/10.1643/CE-13-058
dc.relation.alternativeid
info:eu-repo/semantics/altIdentifier/url/http://www.bioone.org/doi/10.1643/CE-13-058
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