INVESTIGADORES
JARA fabian Gaston
artículos
Título:
Variación ontogenética en la palatabilidad de los renacuajos de Bufo spinulosus papillosus, Philippi, 1902 (Anura, Bufonidae)
Autor/es:
JARA F G; PEROTTI, M G
Revista:
CUADERNOS DE HERPETOLOGíA
Editorial:
ASOCIACIÓN HERPETOLÓGICA ARGENTINA
Referencias:
Año: 2006 vol. 19 p. 37 - 42
ISSN:
0326-551X
Resumen:
We evaluated the ontogenetic variation in the palatability of Bufo spinulosus papillosus tadpoles exposed to odonate larvae of Rhionaeshna variegata (Odonata, Aeshnidae). We exposed tadpoles to direct predation and determined the number of consumed tadpoles in four developmental categories. Bufo spinulosus papillosus tadpoles of categories I (stages 24-26) and II (stages 32-34) were unpalatable, while categories III (stages 38-40) and IV (stages 42-45) were progressively palatable. We observed a post-capture rejection behavior when they caught unpalatable tadpoles in categories I and II. The palatability pattern observed in Bufo spinulosus papillosus was different from related Bufo species (Brodie and Formanowicz, 1987; Kehr and Schnack, 1991; Lawler and Hero, 1997).