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...

Descripción completa

Guardado en:
Detalles Bibliográficos
Autores principales: Contreras, Julio R., Contreras, Analía N. Ch. de
Formato: Artículo revista
Lenguaje:Español
Publicado: Centro de Ecología Aplicada del Litoral (Consejo Nacional de Investigaciones Científicas y Técnicas - Universidad Nacional de Nordeste) 2025
Materias:
Acceso en línea:https://revistas.unne.edu.ar/index.php/eco/article/view/8581
Aporte de:
id I48-R154-article-8581
record_format ojs
institution Universidad Nacional del Nordeste
institution_str I-48
repository_str R-154
container_title_str Revistas UNNE - Universidad Nacional del Noroeste (UNNE)
language Español
format Artículo revista
topic batracofauna
Corrientes (Argentina)
ecología
biogreografía
spellingShingle batracofauna
Corrientes (Argentina)
ecología
biogreografía
Contreras, Julio R.
Contreras, Analía N. Ch. de
Ecology and biogeography of the anuran amphibians in Northwestern Corrientes, Argentina
topic_facet batracofauna
Corrientes (Argentina)
ecología
biogreografía
author Contreras, Julio R.
Contreras, Analía N. Ch. de
author_facet Contreras, Julio R.
Contreras, Analía N. Ch. de
author_sort Contreras, Julio R.
title Ecology and biogeography of the anuran amphibians in Northwestern Corrientes, Argentina
title_short Ecology and biogeography of the anuran amphibians in Northwestern Corrientes, Argentina
title_full Ecology and biogeography of the anuran amphibians in Northwestern Corrientes, Argentina
title_fullStr Ecology and biogeography of the anuran amphibians in Northwestern Corrientes, Argentina
title_full_unstemmed Ecology and biogeography of the anuran amphibians in Northwestern Corrientes, Argentina
title_sort ecology and biogeography of the anuran amphibians in northwestern corrientes, argentina
description 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.
publisher Centro de Ecología Aplicada del Litoral (Consejo Nacional de Investigaciones Científicas y Técnicas - Universidad Nacional de Nordeste)
publishDate 2025
url https://revistas.unne.edu.ar/index.php/eco/article/view/8581
work_keys_str_mv AT contrerasjulior ecologyandbiogeographyoftheanuranamphibiansinnorthwesterncorrientesargentina
AT contrerasanalianchde ecologyandbiogeographyoftheanuranamphibiansinnorthwesterncorrientesargentina
AT contrerasjulior caracteristicasecologicasybiogeograficasdelabatracofaunadelnoroestedelaprovinciadecorrientesargentina
AT contrerasanalianchde caracteristicasecologicasybiogeograficasdelabatracofaunadelnoroestedelaprovinciadecorrientesargentina
first_indexed 2025-10-17T05:01:38Z
last_indexed 2025-10-17T05:01:38Z
_version_ 1846203958533554176
spelling I48-R154-article-85812025-08-21T15:01:57Z Ecology and biogeography of the anuran amphibians in Northwestern Corrientes, Argentina Características ecológicas y biogeográfícas de la batracofauna del noroeste de la provincia de Corrientes, Argentina Contreras, Julio R. Contreras, Analía N. Ch. de batracofauna Corrientes (Argentina) ecología biogreografía 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. Durante los últimos dieciocho meses se realizaron estudios sobre los anfibios de un área de 2.500 kilómetros cuadrados en la región noroeste de la provincia de Corrientes. Se incluye aquí una lista de 40 especies y subespecies, cada una con un contexto taxonómico resumido, basado en el examen de 2.000 especímenes recolectados por los autores. La alta diversidad de especies se explica como resultado del notable mosaicismo ambiental debido a la superposición de condiciones climáticas chaqueñas y subtropicales húmedas, generadas por la influencia de los ríos Paraná y Paraguay y sus valles de inundación. La concurrencia de conjuntos faunísticos de diferentes orígenes cenogenéticos es un efecto del funcionamiento a lo largo del tiempo de, al menos, tres vías activas de dispersión de especies: la chaqueña, la paranaense y la sudbrasileña. Un análisis biogeográfico de la batracofauna estudiada ha mostrado una estrecha afinidad chaqueña con un FRF (Factor de Relación de Fauna) de 0,61. Sin embargo, la diversidad local supera ampliamente el número total de especies en el Chaco típico. Las principales semejanzas de FRF ocurren con lugares bajo la influencia del río Paraná, y revelan una caracterización distintiva de los anfibios a través de la Mesopotamia argentina, con afinidades menores con el complejo faunístico de la Serra Geral (Misiones). Se revisan las características bioecológicas de las especies estudiadas. Las especies de origen chaqueño están bien adaptadas al bajo estrés hídrico y tienen un ciclo reproductivo oportunista que depende de las lluvias. Algunas especies chaqueñas y la mayoría de las no chaqueñas tienen un patrón temporal de reproducción definido a lo largo del ciclo anual y están relacionadas con condiciones microambientales permanentes. Centro de Ecología Aplicada del Litoral (Consejo Nacional de Investigaciones Científicas y Técnicas - Universidad Nacional de Nordeste) 2025-08-21 info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion Artículo revisado por pares application/pdf https://revistas.unne.edu.ar/index.php/eco/article/view/8581 Ecosur; 1982: vol. 9, no. 17; 29-66 0325-108X spa https://revistas.unne.edu.ar/index.php/eco/article/view/8581/8127 https://creativecommons.org/licenses/by-nc/4.0