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Abstract:

The knowledge about reproductive strategies of a species contributes to their conservation. Multiple paternity is a reproductive behavior increasing effective population size, which could increase genetic diversity particularly in populations submitted to bottlenecks events. In Argentina, wild populations of Caiman latirostris are subject of a management plan devoted to their preservation and sustainable utilization based on its commercial interest. This program started in response to the evident numeric reduction of the populations, as a consequence of hunting pressure and habitat modification; it had a remarkable success in population recovery allowing the commercial use of C. latirostris. Data on reproductive behavior of C. latirostris are limited because mating occurs in the water and the information about their genetic diversity is scarce too. Our specific aims were to study the mating system and population genetic structure applying microsatellite markers in twelve C. latirostris families. The obtained results showed highly significant difference among populations and a lack of correspondence between geographical distance and genetic differentiation suggesting that populations of C. latirostris represent unstable metapopulations. In the paternity analysis was detected more than one father in two nests, which could be explained by capacity of storage sperm, proposed in females of a related species. The behavior of multipaternity could contribute to maintain viable populations of C. latirostris, since the maintenance of genetic variability within populations could help increase their capacity to respond to selective pressure. Further studies employing genetic and behavioral framework are needed to better understand the reproductive biology of C. latirostris. © 2012 Koninklijke Brill NV, Leiden.

Registro:

Documento: Artículo
Título:Mating system and population analysis of the broad-snouted caiman (Caiman latirostris) using microsatellite markers
Autor:Amavet, P.S.; Vilardi, J.C.; Rueda, E.C.; Larriera, A.; Saidman, B.O.
Filiación:Departamento de Ciencias Naturales, Universidad Nacional Del Litoral, Ciudad Universitaria, Santa Fe 3000, Argentina
Departamento Ecologia, Facultad de Ciencias Exactas y Naturales, Universidad de Buenos Aires, Buenos Aires 1428, Argentina
Proyecto Yacare-Laboratorio de Zoologia Aplicada Anexo Vertebrados (FHUC-UNL/MASPyMA), A. del Valle 8700, Santa Fe 3000, Argentina
Carrera Del Investigador Cientifico (CIC), Consejo Nacional de Investigaciones Cientificas y Tecnicas (CONICET), Argentina
Palabras clave:Caiman latirostris; molecular markers; multiple paternity; population genetics; sustainable use; conservation genetics; crocodilian; effective population size; genetic marker; genetic variation; hunting; metapopulation; natural selection; nest; paternity; population genetics; preservation; reproductive behavior; reproductive biology; reproductive strategy; species conservation; sustainability; wild population; Argentina; Caiman; Caiman latirostris
Año:2012
Volumen:33
Número:1
Página de inicio:83
Página de fin:93
DOI: http://dx.doi.org/10.1163/156853812X624423
Título revista:Amphibia Reptilia
Título revista abreviado:Amphib. Reptilia
ISSN:01735373
Registro:https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_01735373_v33_n1_p83_Amavet

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Citas:

---------- APA ----------
Amavet, P.S., Vilardi, J.C., Rueda, E.C., Larriera, A. & Saidman, B.O. (2012) . Mating system and population analysis of the broad-snouted caiman (Caiman latirostris) using microsatellite markers. Amphibia Reptilia, 33(1), 83-93.
http://dx.doi.org/10.1163/156853812X624423
---------- CHICAGO ----------
Amavet, P.S., Vilardi, J.C., Rueda, E.C., Larriera, A., Saidman, B.O. "Mating system and population analysis of the broad-snouted caiman (Caiman latirostris) using microsatellite markers" . Amphibia Reptilia 33, no. 1 (2012) : 83-93.
http://dx.doi.org/10.1163/156853812X624423
---------- MLA ----------
Amavet, P.S., Vilardi, J.C., Rueda, E.C., Larriera, A., Saidman, B.O. "Mating system and population analysis of the broad-snouted caiman (Caiman latirostris) using microsatellite markers" . Amphibia Reptilia, vol. 33, no. 1, 2012, pp. 83-93.
http://dx.doi.org/10.1163/156853812X624423
---------- VANCOUVER ----------
Amavet, P.S., Vilardi, J.C., Rueda, E.C., Larriera, A., Saidman, B.O. Mating system and population analysis of the broad-snouted caiman (Caiman latirostris) using microsatellite markers. Amphib. Reptilia. 2012;33(1):83-93.
http://dx.doi.org/10.1163/156853812X624423