Abstract
Larval competition was investigated in foam-nesting frogs with contrasting breeding strategies. Leptodactylus fuscus nests in burrows with moderate numbers of large eggs, mainly on dry nights; Engystomops pustulosus makes floating nests with large numbers of small eggs, mainly on wet nights. Both use the same temporary pools in open habitat over an extended breeding season. Larval growth to metamorphosis was assessed in a semi-natural experiment and in the laboratory. Tanks contained either single species or equal numbers of both species. Inter-specific competition was asymmetric; L. fuscus survived as well as or better in competition with E. pustulosus than in intra-specific competition. Leptodactylus fuscus attained larger sizes with E. pustulosus present. In interspecific competition E. pustulosus showed worse survival and grew slower and to a smaller size. Outdoors, both species tolerated water temperatures that often rose to 42C and reached metamorphosis in very short times: 14 days after oviposition in L. fuscus and 17 days in E. pustulosus.
Original language | English |
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Pages (from-to) | 2151-2159 |
Number of pages | 9 |
Journal | Journal of Natural History |
Volume | 42 |
Issue number | 31-32 |
DOIs | |
Publication status | Published - 2008 |
Keywords / Materials (for Non-textual outputs)
- Anuran tadpoles
- foam‐nesting
- interspecific competition
- Engystomops pustulosus
- Leptodactylus fuscus