Ecology and biogeography of the anuran amphibians in Northwestern Corrientes, Argentina
During the last eighteen months studies on the amphibians of an area of 2.500 square kilometers were carried out in the northwestern región of the Province of Corrientes. It is included here a list of 40 species and subspecies, each of them with a summarized taxonomic context, based on the examinati...
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| Autores principales: | , |
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| Formato: | Artículo revista |
| Lenguaje: | Español |
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Centro de Ecología Aplicada del Litoral (Consejo Nacional de Investigaciones Científicas y Técnicas - Universidad Nacional de Nordeste)
2025
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| Acceso en línea: | https://revistas.unne.edu.ar/index.php/eco/article/view/8581 |
| Aporte de: |
| Sumario: | During the last eighteen months studies on the amphibians of an area of 2.500 square kilometers were carried out in the northwestern región of the Province of Corrientes. It is included here a list of 40 species and subspecies, each of them with a summarized taxonomic context, based on the examination of 2.000 specimens collected by the authors. The high specifie diversity is explained as a result of the strieking environmetal mosaieism due to the overlapping of ehaeoan and moist subtropical climatic conditions generated by the influente of the Paraná and Paraguay Rivers and their flood valleys. The concurrence of faunistic assemblages from different cenogenetic origins, is an effect of functioning through time -at least- three active ways of species dispersal: chacoan, paranense and sudbrazilian one. Of the studied batrachofauna, a biogeographic analysis has shovvn a cióse chacoan affmity with a FRF=0,61. Local diversity, however, surpasses highly the total number of species in the typic chaco. Main FRF resemblances occur with places under the Paraná River iniluence, and reveáis a distinctive amphibian characterization through the Argentino Mesopotamia, with minor affinities with the Serra Geral (Misiones) faunistic complex. Bioecological charateristies of studied species are revised. Chaco derived species are well atlapted to low hydric stress and have an opportunistic rain-dependent reproductive cycle. Some chacoan and most of the non-chacoan species have a defíned temporal pattern of reproduetion through the year cycle and are related to permanet microenvironmental conditions. |
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