Cesar Cuevas | Universidad Católica de Temuco (original) (raw)

Papers by Cesar Cuevas

The tadpole of Alsodes cf. norae (Anura: Alsodidae) with comments on the diagnosis of the genus Alsodes, 2018

Our aim in the present contribution is to provide information about the tadpole of A. cf. norae, ... more Our aim in the present contribution is to provide information about the tadpole of A. cf. norae, including its external morphology, internal oral features, chondrocranium, and hyobranchial apparatus along with a review of the information available for these characteristics in tadpoles of the genus Alsodes.

Geographic boundaries and natural history notes of the microendemic endangered frog Eupsophus migueli Formas, 1977 (Alsodidae) in the Mahuidanche Range, southern Chile, 2020

Citation: Cuevas CC, Sanhueza R (2020) Geographic boundaries and natural history notes of the mic... more Citation: Cuevas CC, Sanhueza R (2020) Geographic boundaries and natural history notes of the microendemic endangered frog Eupsophus migueli Formas, 1977 (Alsodidae) in the Mahuidanche Range, southern Chile. ZooKeys 929: 79-92. Abstract Eupsophus migueli is considered a microendemic endangered species inhabiting the temperate Nothofagus forests of the Mahuidanche Range of southern Chile. However, this categorization is based on scarce data about its distribution and natural history. In order to assess these parameters, this article reports new geographic records obtained through intensive fieldwork between 2011 and 2016. Considering this, an updated distribution map for E. migueli is proposed, and new data about natural history traits and habitat use are provided. The information obtained in this study is discussed considering the zoogeographical importance of E. migueli, and confirms the species IUCN conservation status. Resumen Eupsophus migueli está considerada como una especie microendémica en peligro de extinción que habita los bosques templados de Nothofagus de la Cordillera de Mahuidanche, sur de Chile. Sin embargo, esta categorización está basada en poca información acerca de su distribución e historia natural. Con el fin de evaluar ambos parámetros, en este artículo se reportan nuevos registros geográficos, obtenidos de manera intensiva entre los años 2011 y 2016. De esta forma, se propone un mapa de distribución actualizado para E. migueli, y se presentan nuevos datos sobre los rasgos de historia natural y sobre el uso del hábitat. Los nuevos antecedentes se discuten en referencia a la importancia zoogeográfica de E. migueli, y reafirman su categoría de conservación.


Gestion Ambiental, Jul 31, 2014

Through intensive fieldwork along Cordillera de la Costa in South-Central Chile, basic biological... more Through intensive fieldwork along Cordillera de la Costa in South-Central Chile, basic biological data related to habitat loss and its possible impact on the diversity of amphibians (frogs and toads) were collected, with special emphasis to the situation of the critically endangered species Rhinoderma rufum. Social surveys, physical, chemical and biological data appraisals led to proposal a hypothesis regarding the conservation status of ten frog’ s species. The most consistent explanation for species low numbers and near extinction of Rhinoderma rufum appears to be lack of suitable habitat because replacement of native forest with
exotic species; added to the loss of water supply , and their synergism with frog life strategies. Despite these results, and based on anecdotal observations, some hypotheses are pointed out explaining the chance of finding specimens of R. rufum in remnant Coastal Range forest.

Two new localities for Telmatobufo australis are reported herein: the Huiro stream (39°36'55"S; 7... more Two new localities for Telmatobufo australis are reported herein: the Huiro stream (39°36'55"S; 72°3'45"W), located in western slopes of the Coastal Range near Chaihuín, and San Pablo de Tregua (39°58’19’’S; 73°39’34’’W), in the pre-mountain of Andes range, both located in Los Rios Region. Specimens of both localities were identified based on morphological characteristics of tadpoles and adult respectively.

Revista Chilena De Historia Natural, 2008

A new locality and an updated distribution map to Batrachyla leptopus Bell is provided herein. Th... more A new locality and an updated distribution map to Batrachyla leptopus Bell is provided herein. The new record extends in 200 km the distribution range of this species and constitutes the northernmost record until today. Finally, the present results are discussed in the Amphibian declining frame, bearing in mind the importance of these records and additional information to future conservation strategies in the study area.

New Zealand Journal of Zoology, 2008

"An intraspecific chromosomic divergence in Batrachyla antartandica from eight localities of sout... more "An intraspecific chromosomic divergence in Batrachyla antartandica from eight localities of southern Chile indicated polymorphic patterns in C-heterochromatin (C-bands), secondary constrictions (SC) and argyrophilic nucleolus organizer region (Ag-NOR). Four cytotypes based in C-bands patterns in all range of B. antartandica were detected. In addition, the eight localities analyzed showed different patterns in SCs and AgNORs distribution. With one exception, there was always correspondence between SCs and Ag-NOR locations.
Hypotheses explaining these intraspecific variations are proposed. The value of C-heterochromatin and SCs/AgNOR in microevolutionary processes at chromosome level as well as specific markers in frogs is discussed. Additionally, the karyotype of this species is re-described."

Revista Chilena de Historia Natural, 2002

Se describe una nueva especie de rana acuática, Telmatobius philippii, de las proximidades de Oll... more Se describe una nueva especie de rana acuática, Telmatobius philippii, de las proximidades de Ollagüe, II Región, Cordillera de Los Andes, norte de Chile. El nuevo taxón se caracteriza por su tamaño moderado (46,10–53,70 mm), flancos granulares, lengua ovalada sin escotadura; adherida anteriormente al piso de la boca en 75 % de su longitud, dientes maxilares y premaxilares resentes y renacuajos con sistema de la línea lateral conspicua. La descripción de la nueva especie se completa con información osteológica, cromosómica ecológica y larvaria. Telmatobius philippii es comparada con otras especies chilenas del género Telmatobius.

A new species of Alsodes is described from Cerro Mirador, southern Chile, based on adults, osteol... more A new species of Alsodes is described from Cerro Mirador, southern Chile, based on adults, osteology, morphology and chromosomes. No sympatric ocurrence of another congeneric species is known from the type locality.

The tadpole of Alsodes cf. norae (Anura: Alsodidae) with comments on the diagnosis of the genus Alsodes, 2018

Our aim in the present contribution is to provide information about the tadpole of A. cf. norae, ... more Our aim in the present contribution is to provide information about the tadpole of A. cf. norae, including its external morphology, internal oral features, chondrocranium, and hyobranchial apparatus along with a review of the information available for these characteristics in tadpoles of the genus Alsodes.

Geographic boundaries and natural history notes of the microendemic endangered frog Eupsophus migueli Formas, 1977 (Alsodidae) in the Mahuidanche Range, southern Chile, 2020

Citation: Cuevas CC, Sanhueza R (2020) Geographic boundaries and natural history notes of the mic... more Citation: Cuevas CC, Sanhueza R (2020) Geographic boundaries and natural history notes of the microendemic endangered frog Eupsophus migueli Formas, 1977 (Alsodidae) in the Mahuidanche Range, southern Chile. ZooKeys 929: 79-92. Abstract Eupsophus migueli is considered a microendemic endangered species inhabiting the temperate Nothofagus forests of the Mahuidanche Range of southern Chile. However, this categorization is based on scarce data about its distribution and natural history. In order to assess these parameters, this article reports new geographic records obtained through intensive fieldwork between 2011 and 2016. Considering this, an updated distribution map for E. migueli is proposed, and new data about natural history traits and habitat use are provided. The information obtained in this study is discussed considering the zoogeographical importance of E. migueli, and confirms the species IUCN conservation status. Resumen Eupsophus migueli está considerada como una especie microendémica en peligro de extinción que habita los bosques templados de Nothofagus de la Cordillera de Mahuidanche, sur de Chile. Sin embargo, esta categorización está basada en poca información acerca de su distribución e historia natural. Con el fin de evaluar ambos parámetros, en este artículo se reportan nuevos registros geográficos, obtenidos de manera intensiva entre los años 2011 y 2016. De esta forma, se propone un mapa de distribución actualizado para E. migueli, y se presentan nuevos datos sobre los rasgos de historia natural y sobre el uso del hábitat. Los nuevos antecedentes se discuten en referencia a la importancia zoogeográfica de E. migueli, y reafirman su categoría de conservación.


Gestion Ambiental, Jul 31, 2014

Through intensive fieldwork along Cordillera de la Costa in South-Central Chile, basic biological... more Through intensive fieldwork along Cordillera de la Costa in South-Central Chile, basic biological data related to habitat loss and its possible impact on the diversity of amphibians (frogs and toads) were collected, with special emphasis to the situation of the critically endangered species Rhinoderma rufum. Social surveys, physical, chemical and biological data appraisals led to proposal a hypothesis regarding the conservation status of ten frog’ s species. The most consistent explanation for species low numbers and near extinction of Rhinoderma rufum appears to be lack of suitable habitat because replacement of native forest with
exotic species; added to the loss of water supply , and their synergism with frog life strategies. Despite these results, and based on anecdotal observations, some hypotheses are pointed out explaining the chance of finding specimens of R. rufum in remnant Coastal Range forest.

Two new localities for Telmatobufo australis are reported herein: the Huiro stream (39°36'55"S; 7... more Two new localities for Telmatobufo australis are reported herein: the Huiro stream (39°36'55"S; 72°3'45"W), located in western slopes of the Coastal Range near Chaihuín, and San Pablo de Tregua (39°58’19’’S; 73°39’34’’W), in the pre-mountain of Andes range, both located in Los Rios Region. Specimens of both localities were identified based on morphological characteristics of tadpoles and adult respectively.

Revista Chilena De Historia Natural, 2008

A new locality and an updated distribution map to Batrachyla leptopus Bell is provided herein. Th... more A new locality and an updated distribution map to Batrachyla leptopus Bell is provided herein. The new record extends in 200 km the distribution range of this species and constitutes the northernmost record until today. Finally, the present results are discussed in the Amphibian declining frame, bearing in mind the importance of these records and additional information to future conservation strategies in the study area.

New Zealand Journal of Zoology, 2008

"An intraspecific chromosomic divergence in Batrachyla antartandica from eight localities of sout... more "An intraspecific chromosomic divergence in Batrachyla antartandica from eight localities of southern Chile indicated polymorphic patterns in C-heterochromatin (C-bands), secondary constrictions (SC) and argyrophilic nucleolus organizer region (Ag-NOR). Four cytotypes based in C-bands patterns in all range of B. antartandica were detected. In addition, the eight localities analyzed showed different patterns in SCs and AgNORs distribution. With one exception, there was always correspondence between SCs and Ag-NOR locations.
Hypotheses explaining these intraspecific variations are proposed. The value of C-heterochromatin and SCs/AgNOR in microevolutionary processes at chromosome level as well as specific markers in frogs is discussed. Additionally, the karyotype of this species is re-described."

Revista Chilena de Historia Natural, 2002

Se describe una nueva especie de rana acuática, Telmatobius philippii, de las proximidades de Oll... more Se describe una nueva especie de rana acuática, Telmatobius philippii, de las proximidades de Ollagüe, II Región, Cordillera de Los Andes, norte de Chile. El nuevo taxón se caracteriza por su tamaño moderado (46,10–53,70 mm), flancos granulares, lengua ovalada sin escotadura; adherida anteriormente al piso de la boca en 75 % de su longitud, dientes maxilares y premaxilares resentes y renacuajos con sistema de la línea lateral conspicua. La descripción de la nueva especie se completa con información osteológica, cromosómica ecológica y larvaria. Telmatobius philippii es comparada con otras especies chilenas del género Telmatobius.

A new species of Alsodes is described from Cerro Mirador, southern Chile, based on adults, osteol... more A new species of Alsodes is described from Cerro Mirador, southern Chile, based on adults, osteology, morphology and chromosomes. No sympatric ocurrence of another congeneric species is known from the type locality.

En: Conservación de los anfibios de Chile, 2012

In: Ecological advances in Temperate rain forest, 2009