IGEVET   21075
INSTITUTO DE GENETICA VETERINARIA "ING. FERNANDO NOEL DULOUT"
Unidad Ejecutora - UE
artículos
Título:
Is recolonization pattern related to female philopatry? An insight into a colonially breeding mammal
Autor/es:
TERÁN, ESTER; GRANDI, MARÍA FLORENCIA; CRESPO, ENRIQUE ALBERTO; SANTOS, MARÍA RITA; TERÁN, ESTER; GRANDI, MARÍA FLORENCIA; CRESPO, ENRIQUE ALBERTO; SANTOS, MARÍA RITA; LOIZAGA DE CASTRO, ROCÍO; BAILLIET, GRACIELA; LOIZAGA DE CASTRO, ROCÍO; BAILLIET, GRACIELA
Revista:
MAMMALIAN BIOLOGY
Editorial:
ELSEVIER GMBH
Referencias:
Año: 2018 vol. 89 p. 21 - 29
ISSN:
1616-5047
Resumen:
Colony formation is related to dispersal, philopatry, conspecific attraction, available suitable habitat,proximity and availability of food resources, and reproductive success. In this study we analyzed iffemale South American sea lions, (SASL, Otaria flavescens), exhibit natal fidelity at a small geographic scale (between colonies of the same breeding area) in a context of a recovering population with population expansion and recolonization. We examined the mitochondrial genetic diversity and investigated spatial genetic structure, considering new and traditional colonies. We recovered 36 haplotypes (23 novel), with the contemporary presence of common and private haplotypes in each colony. AMOVA analysis indicated no population genetic structure, however Fst , SAMOVA and AIS analyses suggested some level of genetic structure between northern and southern colonies. Therefore female SASL display different strategies when they choose where to breed: some are residents of -or return to- one particular colony whereas others disperse within the study area. In conclusion the recolonization of SASL may be the effect of weak female philopatry attenuated and/or interacting with other processes like site fidelity to near-by feedinggrounds, breeding success, terrestrial habitat selection for breed and dispersal.