Trophic ecology of tadpoles in floodplain wetlands: combining gut contents, selectivity, and stable isotopes to study feeding segregation of syntopic species
- Antoniazzi, Carolina Elisabet
- Lopez, Javier Alejandro
- Lorenzón, Rodrigo Ezequiel
- Saigo, Miguel
- Devercelli, Melina
- Maneyro Landó, Raúl Eduardo
- Marchese Garello, Mercedes Rosa
DOIAbstract
Little consensus exists on the role of food partitioning in the organization of tadpole assemblages. We studied trophic ecology of syntopic tadpoles through the analysis of gut contents, selectivity, and stable isotopes to assess the occurrence of food partitioning in tadpole assemblages. Tadpoles (n = 194) were collected in three wetlands and corresponded to four species: Elachistocleis bicolor (Eb), Scinax nasicus (Sn), Physalaemus albonotatus (Pa), and Dendropsophus sp. (D); and belonged to four ecomorphological groups (EMGs): suspension feeders (Eb), nektonic (Sn), benthic (Pa) and macrophagous (D). Sn, and Pa showed low selective diet and a wider trophic spectrum than Eb and D, which mainly consumed one or two food categories. Diet ove...
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