Resumo

MOLINA-MOCTEZUMA, Alejandro; ZUNIGA-VEGA, José Jaime  e  ESPINOSA-PEREZ, Héctor. Mortality rates in two populations of the viviparous fish Poeciliopsis baenschi (Teleostei: Poeciliidae). Rev. Mex. Biodiv. [online]. 2013, vol.84, n.3, pp.994-998. ISSN 2007-8706.  https://doi.org/10.7550/rmb.34869.

Mortality is one of the most important demographic features. Measures of size- or sex-specific mortality can help to explain local selective pressures and can also be used to construct demographic models that estimate population trends. This study estimated mortality rates for 2 populations of a viviparous freshwater fish, endemic to western Mexico (Poeciliopsis baenschi). We found that mortality was size- and sex-dependent and different between both populations. We compared our findings with mortality rates previously estimated for other populations of this species.

Palavras-chave : capture-mark-recapture; demography; differential mortality; Poeciliidae; survival estimates.

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