Use of microhabitat, shelter preference, activity patterns, population structure and sexual dimorphism of the Andean lizard Riama striata (Squamata: Gymnophthalmidae) in a high-alt...

Autores
Méndez Galeano, Miguel Ángel
Año de publicación
2020
Idioma
inglés
Tipo de recurso
artículo
Estado
versión publicada
Descripción
Gymnophthalmidae is a family of Neotropical lizards from which its ecology has been widely studied in the lowlands. However, the life history of Andean species is still poorly known. Apparently, these species are tolerant to anthropic habitats. The objective of this study is to describe some aspects of the biology of one species of this family, Riama striata, in a highly urbanized locality in the Eastern Cordillera of the Colombian Andes. I describe microhabitat use, shelter preference, activity patterns, population structure and sexual dimorphism of the species. Riama striata uses both artificial and natural substrates that are mainly microhabitats of rock or concrete, and males prefer bricks even though this is the least frequent refuge available. The species has a bimodal diurnal activity, particularly on sunny days. It is sexually dimorphic in the size of the head; males have larger heads. There is a high abundance of individuals, with a greater number of females and juveniles than males. These results, together with those of other Andean species contrast sharply with the studies in gymnophthalmids and alopoglosids of the lowlands and raise new hypotheses about the ecology and life history of these lizards and how they respond to the effects of anthropic impact.
La familia Gymnophthalmidae comprende lagartos neotropicales cuya ecología ha sido ampliamente estudiada en tierras bajas. Sin embargo, la historia de vida de especies andinas ha sido poco estudiada. Aparentemente, algunas de estas especies son tolerantes a hábitats antrópicos. El objetivo de este estudio es describir algunos aspectos de una especie de esta familia, Riama striata, en un área altamente urbanizada en la cordillera oriental de los andes colombianos. Se estimó el uso del microhábitat, preferencia de refugios, patrones de actividad, estructura poblacional y dimorfismo sexual de la especie. R. striata usa tanto sustratos artificiales como naturales, principalmente microhábitats de roca y concreto, y los machos prefieren ladrillos incluso siendo este el refugio menos frecuente. Además, esta especie presenta una actividad diurna bimodal, particularmente en días soleados; dimorfismo sexual en el tamaño de la cabeza, siendo los machos aquellos con cabezas más grandes; y alta abundancia, con una mayor cantidad de hembras y juveniles que de machos. Estos resultados, junto con los de otras especies andinas, contrastan fuertemente con los estudios en gimnophthalmidos y alopoglosidos de tierras bajas y plantean nuevas hipótesis sobre la ecología e historia de vida de estas lagartijas y cómo responden estas frente a los efectos del impacto antrópico.
Asociación Herpetológica Argentina
Materia
Zoología
Andean species
Urbanization
Artificial substrate
Sexual dimorphism
Anthropic impact
Gymnophthalmidae
Especies andinas
Urbanización
Sustrato artificial
Dimorfismo sexual
Impacto antrópico
Nivel de accesibilidad
acceso abierto
Condiciones de uso
http://creativecommons.org/licenses/by-nc/2.5/ar/
Repositorio
SEDICI (UNLP)
Institución
Universidad Nacional de La Plata
OAI Identificador
oai:sedici.unlp.edu.ar:10915/95931

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oai_identifier_str oai:sedici.unlp.edu.ar:10915/95931
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network_name_str SEDICI (UNLP)
spelling Use of microhabitat, shelter preference, activity patterns, population structure and sexual dimorphism of the Andean lizard Riama striata (Squamata: Gymnophthalmidae) in a high-altitude urban area of ColombiaMéndez Galeano, Miguel ÁngelZoologíaAndean speciesUrbanizationArtificial substrateSexual dimorphismAnthropic impactGymnophthalmidaeEspecies andinasUrbanizaciónSustrato artificialDimorfismo sexualImpacto antrópicoGymnophthalmidae is a family of Neotropical lizards from which its ecology has been widely studied in the lowlands. However, the life history of Andean species is still poorly known. Apparently, these species are tolerant to anthropic habitats. The objective of this study is to describe some aspects of the biology of one species of this family, Riama striata, in a highly urbanized locality in the Eastern Cordillera of the Colombian Andes. I describe microhabitat use, shelter preference, activity patterns, population structure and sexual dimorphism of the species. Riama striata uses both artificial and natural substrates that are mainly microhabitats of rock or concrete, and males prefer bricks even though this is the least frequent refuge available. The species has a bimodal diurnal activity, particularly on sunny days. It is sexually dimorphic in the size of the head; males have larger heads. There is a high abundance of individuals, with a greater number of females and juveniles than males. These results, together with those of other Andean species contrast sharply with the studies in gymnophthalmids and alopoglosids of the lowlands and raise new hypotheses about the ecology and life history of these lizards and how they respond to the effects of anthropic impact.La familia Gymnophthalmidae comprende lagartos neotropicales cuya ecología ha sido ampliamente estudiada en tierras bajas. Sin embargo, la historia de vida de especies andinas ha sido poco estudiada. Aparentemente, algunas de estas especies son tolerantes a hábitats antrópicos. El objetivo de este estudio es describir algunos aspectos de una especie de esta familia, Riama striata, en un área altamente urbanizada en la cordillera oriental de los andes colombianos. Se estimó el uso del microhábitat, preferencia de refugios, patrones de actividad, estructura poblacional y dimorfismo sexual de la especie. R. striata usa tanto sustratos artificiales como naturales, principalmente microhábitats de roca y concreto, y los machos prefieren ladrillos incluso siendo este el refugio menos frecuente. Además, esta especie presenta una actividad diurna bimodal, particularmente en días soleados; dimorfismo sexual en el tamaño de la cabeza, siendo los machos aquellos con cabezas más grandes; y alta abundancia, con una mayor cantidad de hembras y juveniles que de machos. Estos resultados, junto con los de otras especies andinas, contrastan fuertemente con los estudios en gimnophthalmidos y alopoglosidos de tierras bajas y plantean nuevas hipótesis sobre la ecología e historia de vida de estas lagartijas y cómo responden estas frente a los efectos del impacto antrópico.Asociación Herpetológica Argentina2020info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionArticulohttp://purl.org/coar/resource_type/c_6501info:ar-repo/semantics/articuloapplication/pdf43-51http://sedici.unlp.edu.ar/handle/10915/95931enginfo:eu-repo/semantics/altIdentifier/issn/1852-5768info:eu-repo/semantics/altIdentifier/doi/10.31017/CdH.2020.(2019-022)info:eu-repo/semantics/openAccesshttp://creativecommons.org/licenses/by-nc/2.5/ar/Creative Commons Attribution-NonCommercial 2.5 Argentina (CC BY-NC 2.5)reponame:SEDICI (UNLP)instname:Universidad Nacional de La Platainstacron:UNLP2025-12-23T11:22:50Zoai:sedici.unlp.edu.ar:10915/95931Institucionalhttp://sedici.unlp.edu.ar/Universidad públicaNo correspondehttp://sedici.unlp.edu.ar/oai/snrdalira@sedici.unlp.edu.arArgentinaNo correspondeNo correspondeNo correspondeopendoar:13292025-12-23 11:22:51.16SEDICI (UNLP) - Universidad Nacional de La Platafalse
dc.title.none.fl_str_mv Use of microhabitat, shelter preference, activity patterns, population structure and sexual dimorphism of the Andean lizard Riama striata (Squamata: Gymnophthalmidae) in a high-altitude urban area of Colombia
title Use of microhabitat, shelter preference, activity patterns, population structure and sexual dimorphism of the Andean lizard Riama striata (Squamata: Gymnophthalmidae) in a high-altitude urban area of Colombia
spellingShingle Use of microhabitat, shelter preference, activity patterns, population structure and sexual dimorphism of the Andean lizard Riama striata (Squamata: Gymnophthalmidae) in a high-altitude urban area of Colombia
Méndez Galeano, Miguel Ángel
Zoología
Andean species
Urbanization
Artificial substrate
Sexual dimorphism
Anthropic impact
Gymnophthalmidae
Especies andinas
Urbanización
Sustrato artificial
Dimorfismo sexual
Impacto antrópico
title_short Use of microhabitat, shelter preference, activity patterns, population structure and sexual dimorphism of the Andean lizard Riama striata (Squamata: Gymnophthalmidae) in a high-altitude urban area of Colombia
title_full Use of microhabitat, shelter preference, activity patterns, population structure and sexual dimorphism of the Andean lizard Riama striata (Squamata: Gymnophthalmidae) in a high-altitude urban area of Colombia
title_fullStr Use of microhabitat, shelter preference, activity patterns, population structure and sexual dimorphism of the Andean lizard Riama striata (Squamata: Gymnophthalmidae) in a high-altitude urban area of Colombia
title_full_unstemmed Use of microhabitat, shelter preference, activity patterns, population structure and sexual dimorphism of the Andean lizard Riama striata (Squamata: Gymnophthalmidae) in a high-altitude urban area of Colombia
title_sort Use of microhabitat, shelter preference, activity patterns, population structure and sexual dimorphism of the Andean lizard Riama striata (Squamata: Gymnophthalmidae) in a high-altitude urban area of Colombia
dc.creator.none.fl_str_mv Méndez Galeano, Miguel Ángel
author Méndez Galeano, Miguel Ángel
author_facet Méndez Galeano, Miguel Ángel
author_role author
dc.subject.none.fl_str_mv Zoología
Andean species
Urbanization
Artificial substrate
Sexual dimorphism
Anthropic impact
Gymnophthalmidae
Especies andinas
Urbanización
Sustrato artificial
Dimorfismo sexual
Impacto antrópico
topic Zoología
Andean species
Urbanization
Artificial substrate
Sexual dimorphism
Anthropic impact
Gymnophthalmidae
Especies andinas
Urbanización
Sustrato artificial
Dimorfismo sexual
Impacto antrópico
dc.description.none.fl_txt_mv Gymnophthalmidae is a family of Neotropical lizards from which its ecology has been widely studied in the lowlands. However, the life history of Andean species is still poorly known. Apparently, these species are tolerant to anthropic habitats. The objective of this study is to describe some aspects of the biology of one species of this family, Riama striata, in a highly urbanized locality in the Eastern Cordillera of the Colombian Andes. I describe microhabitat use, shelter preference, activity patterns, population structure and sexual dimorphism of the species. Riama striata uses both artificial and natural substrates that are mainly microhabitats of rock or concrete, and males prefer bricks even though this is the least frequent refuge available. The species has a bimodal diurnal activity, particularly on sunny days. It is sexually dimorphic in the size of the head; males have larger heads. There is a high abundance of individuals, with a greater number of females and juveniles than males. These results, together with those of other Andean species contrast sharply with the studies in gymnophthalmids and alopoglosids of the lowlands and raise new hypotheses about the ecology and life history of these lizards and how they respond to the effects of anthropic impact.
La familia Gymnophthalmidae comprende lagartos neotropicales cuya ecología ha sido ampliamente estudiada en tierras bajas. Sin embargo, la historia de vida de especies andinas ha sido poco estudiada. Aparentemente, algunas de estas especies son tolerantes a hábitats antrópicos. El objetivo de este estudio es describir algunos aspectos de una especie de esta familia, Riama striata, en un área altamente urbanizada en la cordillera oriental de los andes colombianos. Se estimó el uso del microhábitat, preferencia de refugios, patrones de actividad, estructura poblacional y dimorfismo sexual de la especie. R. striata usa tanto sustratos artificiales como naturales, principalmente microhábitats de roca y concreto, y los machos prefieren ladrillos incluso siendo este el refugio menos frecuente. Además, esta especie presenta una actividad diurna bimodal, particularmente en días soleados; dimorfismo sexual en el tamaño de la cabeza, siendo los machos aquellos con cabezas más grandes; y alta abundancia, con una mayor cantidad de hembras y juveniles que de machos. Estos resultados, junto con los de otras especies andinas, contrastan fuertemente con los estudios en gimnophthalmidos y alopoglosidos de tierras bajas y plantean nuevas hipótesis sobre la ecología e historia de vida de estas lagartijas y cómo responden estas frente a los efectos del impacto antrópico.
Asociación Herpetológica Argentina
description Gymnophthalmidae is a family of Neotropical lizards from which its ecology has been widely studied in the lowlands. However, the life history of Andean species is still poorly known. Apparently, these species are tolerant to anthropic habitats. The objective of this study is to describe some aspects of the biology of one species of this family, Riama striata, in a highly urbanized locality in the Eastern Cordillera of the Colombian Andes. I describe microhabitat use, shelter preference, activity patterns, population structure and sexual dimorphism of the species. Riama striata uses both artificial and natural substrates that are mainly microhabitats of rock or concrete, and males prefer bricks even though this is the least frequent refuge available. The species has a bimodal diurnal activity, particularly on sunny days. It is sexually dimorphic in the size of the head; males have larger heads. There is a high abundance of individuals, with a greater number of females and juveniles than males. These results, together with those of other Andean species contrast sharply with the studies in gymnophthalmids and alopoglosids of the lowlands and raise new hypotheses about the ecology and life history of these lizards and how they respond to the effects of anthropic impact.
publishDate 2020
dc.date.none.fl_str_mv 2020
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info:eu-repo/semantics/publishedVersion
Articulo
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http://creativecommons.org/licenses/by-nc/2.5/ar/
Creative Commons Attribution-NonCommercial 2.5 Argentina (CC BY-NC 2.5)
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rights_invalid_str_mv http://creativecommons.org/licenses/by-nc/2.5/ar/
Creative Commons Attribution-NonCommercial 2.5 Argentina (CC BY-NC 2.5)
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43-51
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