Artículos de revistas
Early breeding protects anuran eggs from Saprolegnia infection
Fecha
2013-08Registro en:
Perotti, Maria Gabriela; Basanta, Maria Florencia; Steciow, Monica Mirta; Sandoval Sierra, J. V.; Diéguez Uribeondo, Javier; Early breeding protects anuran eggs from Saprolegnia infection; Wiley; Austral Ecology; 38; 6; 8-2013; 672-679
1442-9985
Autor
Perotti, Maria Gabriela
Basanta, Maria Florencia
Steciow, Monica Mirta
Sandoval Sierra, J. V.
Diéguez Uribeondo, Javier
Resumen
Here, we studied the ecological significance of Saprolegnia infections (‘saprolegniasis’) on the survival and development of two populations of the endemic Patagonian anuran Pleurodema thaul (Anura, Leiuperidae). We found that four different Saprolegnia species infected eggs and embryos of P. thaul, indicating that the infection by these ‘zoosporic fungi’ was different in each anuran population and among different cohorts. Late anuran cohorts generally showed a higher incidence of infection than early cohorts, but we observed no clear overall pattern between populations. In addition, in laboratory experiments, we determined that some of the Saprolegnia species induce early hatching, and that hatching timing was variable between populations. In summary, we found that early breeding (by underlying priority effects) could improve the survival of the earliest cohorts of P. thaul by allowing them to survive the stress imposed by epidemic events of Saprolegnia.