Comparative ecology of three species of Thamnodynastes (Serpentes, Dipsadidae) in subtropical-temperate South America

Autores
Bellini, Gisela Paola; Giraudo, Alejandro Raul; Arzamendia, Vanesa
Año de publicación
2014
Idioma
inglés
Tipo de recurso
artículo
Estado
versión publicada
Descripción
Two hypotheses have been proposed to explain the differences among species within present-day communities: the competition-predation hypothesis (CPH) and the deep history hypothesis (DHH). However, the lack of information about the ecology of many species hinders clarification of the role of these different, though not mutually exclusive, hypotheses. We compared ecological data of three species of snakes (genus Thamnodynastes) in their subtropical-temperate geographical distributions, evaluating the reproductive biology, sexual dimorphism, feeding ecology and habitat use of T. hypoconia and T. strigatus, and providing the first ecological data of T. chaquensis. Females attained sexual maturity at larger sizes than males. Unusually for viviparous snakes, males and females had similar body sizes although males had more ventral scales than females. The reproductive cycle of females was seasonal (not annual), with parturition occurring in summer. Males of T. chaquensis and T. strigatus were characterised by continuous reproductive cycles, while males of T. hypoconia showed differences between seasons. All three species mainly fed on amphibians. Thamnodynastes strigatus also fed on fishes, lizards and mammals, T. hypoconia occasionally fed on lizards, while T. chaquensis was an amphibian specialist. Thamnodynastes hypoconia lived in lentic aquatic habitats, T. strigatus was the most aquatic species, and T. chaquensis was the most terrestrial species. We propose that most of the ecological traits examined are phylogenetically conservative within the Tachymenini, supporting the DHH.
Fil: Bellini, Gisela Paola. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Santa Fe. Instituto Nacional de Limnología. Universidad Nacional del Litoral. Instituto Nacional de Limnología; Argentina
Fil: Giraudo, Alejandro Raul. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Santa Fe. Instituto Nacional de Limnología. Universidad Nacional del Litoral. Instituto Nacional de Limnología; Argentina. Universidad Nacional del Litoral. Facultad de Humanidades y Ciencias; Argentina
Fil: Arzamendia, Vanesa. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Santa Fe. Instituto Nacional de Limnología. Universidad Nacional del Litoral. Instituto Nacional de Limnología; Argentina. Universidad Nacional del Litoral. Facultad de Humanidades y Ciencias; Argentina
Materia
Competition-Predation Hypothesis
Deep History Hypothesis
Reproduction Ecology
Feeding Ecology
Niche Overlap
Tachymenini
Habitat Use
Nivel de accesibilidad
acceso abierto
Condiciones de uso
https://creativecommons.org/licenses/by-nc-sa/2.5/ar/
Repositorio
CONICET Digital (CONICET)
Institución
Consejo Nacional de Investigaciones Científicas y Técnicas
OAI Identificador
oai:ri.conicet.gov.ar:11336/31676
Acceder
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oai_identifier_str oai:ri.conicet.gov.ar:11336/31676
network_acronym_str CONICETDig
repository_id_str 3498
network_name_str CONICET Digital (CONICET)
spelling Comparative ecology of three species of Thamnodynastes (Serpentes, Dipsadidae) in subtropical-temperate South AmericaBellini, Gisela PaolaGiraudo, Alejandro RaulArzamendia, VanesaCompetition-Predation HypothesisDeep History HypothesisReproduction EcologyFeeding EcologyNiche OverlapTachymeniniHabitat Usehttps://purl.org/becyt/ford/1.6https://purl.org/becyt/ford/1Two hypotheses have been proposed to explain the differences among species within present-day communities: the competition-predation hypothesis (CPH) and the deep history hypothesis (DHH). However, the lack of information about the ecology of many species hinders clarification of the role of these different, though not mutually exclusive, hypotheses. We compared ecological data of three species of snakes (genus Thamnodynastes) in their subtropical-temperate geographical distributions, evaluating the reproductive biology, sexual dimorphism, feeding ecology and habitat use of T. hypoconia and T. strigatus, and providing the first ecological data of T. chaquensis. Females attained sexual maturity at larger sizes than males. Unusually for viviparous snakes, males and females had similar body sizes although males had more ventral scales than females. The reproductive cycle of females was seasonal (not annual), with parturition occurring in summer. Males of T. chaquensis and T. strigatus were characterised by continuous reproductive cycles, while males of T. hypoconia showed differences between seasons. All three species mainly fed on amphibians. Thamnodynastes strigatus also fed on fishes, lizards and mammals, T. hypoconia occasionally fed on lizards, while T. chaquensis was an amphibian specialist. Thamnodynastes hypoconia lived in lentic aquatic habitats, T. strigatus was the most aquatic species, and T. chaquensis was the most terrestrial species. We propose that most of the ecological traits examined are phylogenetically conservative within the Tachymenini, supporting the DHH.Fil: Bellini, Gisela Paola. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Santa Fe. Instituto Nacional de Limnología. Universidad Nacional del Litoral. Instituto Nacional de Limnología; ArgentinaFil: Giraudo, Alejandro Raul. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Santa Fe. Instituto Nacional de Limnología. Universidad Nacional del Litoral. Instituto Nacional de Limnología; Argentina. Universidad Nacional del Litoral. Facultad de Humanidades y Ciencias; ArgentinaFil: Arzamendia, Vanesa. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Santa Fe. Instituto Nacional de Limnología. Universidad Nacional del Litoral. Instituto Nacional de Limnología; Argentina. Universidad Nacional del Litoral. Facultad de Humanidades y Ciencias; ArgentinaBritish Herpetological Society2014-04info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionhttp://purl.org/coar/resource_type/c_6501info:ar-repo/semantics/articuloapplication/pdfapplication/pdfapplication/pdfapplication/pdfhttp://hdl.handle.net/11336/31676Arzamendia, Vanesa; Giraudo, Alejandro Raul; Bellini, Gisela Paola; Comparative ecology of three species of Thamnodynastes (Serpentes, Dipsadidae) in subtropical-temperate South America; British Herpetological Society; Herpetological Journal; 24; 2; 4-2014; 87-960268-0130CONICET DigitalCONICETenginfo:eu-repo/semantics/altIdentifier/url/https://www.thebhs.org/publications/the-herpetological-journal/volume-24-number-2-april-2014/739-03-comparative-ecology-of-three-species-of-i-thamnodynastes-i-serpentes-dipsadidae-in-subtropical-temperate-south-america?format=htmlinfo:eu-repo/semantics/openAccesshttps://creativecommons.org/licenses/by-nc-sa/2.5/ar/reponame:CONICET Digital (CONICET)instname:Consejo Nacional de Investigaciones Científicas y Técnicas2025-10-22T11:36:57Zoai:ri.conicet.gov.ar:11336/31676instacron:CONICETInstitucionalhttp://ri.conicet.gov.ar/Organismo científico-tecnológicoNo correspondehttp://ri.conicet.gov.ar/oai/requestdasensio@conicet.gov.ar; lcarlino@conicet.gov.arArgentinaNo correspondeNo correspondeNo correspondeopendoar:34982025-10-22 11:36:57.889CONICET Digital (CONICET) - Consejo Nacional de Investigaciones Científicas y Técnicasfalse
dc.title.none.fl_str_mv Comparative ecology of three species of Thamnodynastes (Serpentes, Dipsadidae) in subtropical-temperate South America
title Comparative ecology of three species of Thamnodynastes (Serpentes, Dipsadidae) in subtropical-temperate South America
spellingShingle Comparative ecology of three species of Thamnodynastes (Serpentes, Dipsadidae) in subtropical-temperate South America
Bellini, Gisela Paola
Competition-Predation Hypothesis
Deep History Hypothesis
Reproduction Ecology
Feeding Ecology
Niche Overlap
Tachymenini
Habitat Use
title_short Comparative ecology of three species of Thamnodynastes (Serpentes, Dipsadidae) in subtropical-temperate South America
title_full Comparative ecology of three species of Thamnodynastes (Serpentes, Dipsadidae) in subtropical-temperate South America
title_fullStr Comparative ecology of three species of Thamnodynastes (Serpentes, Dipsadidae) in subtropical-temperate South America
title_full_unstemmed Comparative ecology of three species of Thamnodynastes (Serpentes, Dipsadidae) in subtropical-temperate South America
title_sort Comparative ecology of three species of Thamnodynastes (Serpentes, Dipsadidae) in subtropical-temperate South America
dc.creator.none.fl_str_mv Bellini, Gisela Paola
Giraudo, Alejandro Raul
Arzamendia, Vanesa
author Bellini, Gisela Paola
author_facet Bellini, Gisela Paola
Giraudo, Alejandro Raul
Arzamendia, Vanesa
author_role author
author2 Giraudo, Alejandro Raul
Arzamendia, Vanesa
author2_role author
author
dc.subject.none.fl_str_mv Competition-Predation Hypothesis
Deep History Hypothesis
Reproduction Ecology
Feeding Ecology
Niche Overlap
Tachymenini
Habitat Use
topic Competition-Predation Hypothesis
Deep History Hypothesis
Reproduction Ecology
Feeding Ecology
Niche Overlap
Tachymenini
Habitat Use
purl_subject.fl_str_mv https://purl.org/becyt/ford/1.6
https://purl.org/becyt/ford/1
dc.description.none.fl_txt_mv Two hypotheses have been proposed to explain the differences among species within present-day communities: the competition-predation hypothesis (CPH) and the deep history hypothesis (DHH). However, the lack of information about the ecology of many species hinders clarification of the role of these different, though not mutually exclusive, hypotheses. We compared ecological data of three species of snakes (genus Thamnodynastes) in their subtropical-temperate geographical distributions, evaluating the reproductive biology, sexual dimorphism, feeding ecology and habitat use of T. hypoconia and T. strigatus, and providing the first ecological data of T. chaquensis. Females attained sexual maturity at larger sizes than males. Unusually for viviparous snakes, males and females had similar body sizes although males had more ventral scales than females. The reproductive cycle of females was seasonal (not annual), with parturition occurring in summer. Males of T. chaquensis and T. strigatus were characterised by continuous reproductive cycles, while males of T. hypoconia showed differences between seasons. All three species mainly fed on amphibians. Thamnodynastes strigatus also fed on fishes, lizards and mammals, T. hypoconia occasionally fed on lizards, while T. chaquensis was an amphibian specialist. Thamnodynastes hypoconia lived in lentic aquatic habitats, T. strigatus was the most aquatic species, and T. chaquensis was the most terrestrial species. We propose that most of the ecological traits examined are phylogenetically conservative within the Tachymenini, supporting the DHH.
Fil: Bellini, Gisela Paola. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Santa Fe. Instituto Nacional de Limnología. Universidad Nacional del Litoral. Instituto Nacional de Limnología; Argentina
Fil: Giraudo, Alejandro Raul. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Santa Fe. Instituto Nacional de Limnología. Universidad Nacional del Litoral. Instituto Nacional de Limnología; Argentina. Universidad Nacional del Litoral. Facultad de Humanidades y Ciencias; Argentina
Fil: Arzamendia, Vanesa. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Santa Fe. Instituto Nacional de Limnología. Universidad Nacional del Litoral. Instituto Nacional de Limnología; Argentina. Universidad Nacional del Litoral. Facultad de Humanidades y Ciencias; Argentina
description Two hypotheses have been proposed to explain the differences among species within present-day communities: the competition-predation hypothesis (CPH) and the deep history hypothesis (DHH). However, the lack of information about the ecology of many species hinders clarification of the role of these different, though not mutually exclusive, hypotheses. We compared ecological data of three species of snakes (genus Thamnodynastes) in their subtropical-temperate geographical distributions, evaluating the reproductive biology, sexual dimorphism, feeding ecology and habitat use of T. hypoconia and T. strigatus, and providing the first ecological data of T. chaquensis. Females attained sexual maturity at larger sizes than males. Unusually for viviparous snakes, males and females had similar body sizes although males had more ventral scales than females. The reproductive cycle of females was seasonal (not annual), with parturition occurring in summer. Males of T. chaquensis and T. strigatus were characterised by continuous reproductive cycles, while males of T. hypoconia showed differences between seasons. All three species mainly fed on amphibians. Thamnodynastes strigatus also fed on fishes, lizards and mammals, T. hypoconia occasionally fed on lizards, while T. chaquensis was an amphibian specialist. Thamnodynastes hypoconia lived in lentic aquatic habitats, T. strigatus was the most aquatic species, and T. chaquensis was the most terrestrial species. We propose that most of the ecological traits examined are phylogenetically conservative within the Tachymenini, supporting the DHH.
publishDate 2014
dc.date.none.fl_str_mv 2014-04
dc.type.none.fl_str_mv info:eu-repo/semantics/article
info:eu-repo/semantics/publishedVersion
http://purl.org/coar/resource_type/c_6501
info:ar-repo/semantics/articulo
format article
status_str publishedVersion
dc.identifier.none.fl_str_mv http://hdl.handle.net/11336/31676
Arzamendia, Vanesa; Giraudo, Alejandro Raul; Bellini, Gisela Paola; Comparative ecology of three species of Thamnodynastes (Serpentes, Dipsadidae) in subtropical-temperate South America; British Herpetological Society; Herpetological Journal; 24; 2; 4-2014; 87-96
0268-0130
CONICET Digital
CONICET
url http://hdl.handle.net/11336/31676
identifier_str_mv Arzamendia, Vanesa; Giraudo, Alejandro Raul; Bellini, Gisela Paola; Comparative ecology of three species of Thamnodynastes (Serpentes, Dipsadidae) in subtropical-temperate South America; British Herpetological Society; Herpetological Journal; 24; 2; 4-2014; 87-96
0268-0130
CONICET Digital
CONICET
dc.language.none.fl_str_mv eng
language eng
dc.relation.none.fl_str_mv info:eu-repo/semantics/altIdentifier/url/https://www.thebhs.org/publications/the-herpetological-journal/volume-24-number-2-april-2014/739-03-comparative-ecology-of-three-species-of-i-thamnodynastes-i-serpentes-dipsadidae-in-subtropical-temperate-south-america?format=html
dc.rights.none.fl_str_mv info:eu-repo/semantics/openAccess
https://creativecommons.org/licenses/by-nc-sa/2.5/ar/
eu_rights_str_mv openAccess
rights_invalid_str_mv https://creativecommons.org/licenses/by-nc-sa/2.5/ar/
dc.format.none.fl_str_mv application/pdf
application/pdf
application/pdf
application/pdf
dc.publisher.none.fl_str_mv British Herpetological Society
publisher.none.fl_str_mv British Herpetological Society
dc.source.none.fl_str_mv reponame:CONICET Digital (CONICET)
instname:Consejo Nacional de Investigaciones Científicas y Técnicas
reponame_str CONICET Digital (CONICET)
collection CONICET Digital (CONICET)
instname_str Consejo Nacional de Investigaciones Científicas y Técnicas
repository.name.fl_str_mv CONICET Digital (CONICET) - Consejo Nacional de Investigaciones Científicas y Técnicas
repository.mail.fl_str_mv dasensio@conicet.gov.ar; lcarlino@conicet.gov.ar
_version_ 1846782014142808064
score 13.238319

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