A giant on the ground: another large-bodied Atractus (Serpentes: Dipsadinae) from Ecuadorian Andes, with comments on the dietary specializations of the goo-eaters snakes

Autores
Passos, Paulo; Scanferla, Carlos Agustín; Melo Sampaio, Paulo Roberto; Brito, Jorge; Almendariz, Ana
Año de publicación
2018
Idioma
inglés
Tipo de recurso
artículo
Estado
versión publicada
Descripción
Body-size is significantly correlated with the number of vertebrae (pleomerism) in multiple vertebrate lineages, indicating that somitogenesis process is an important factor dictating evolutionary change associated to phyletic allometry and, consequently, species fitness and diversification. However, the role of the evolution of extreme body sizes (dwarfism and gigantism) remains elusive in snakes, mainly with respect to postnatal ontogeny in dietary preferences associated with evolution of gigantism in many lineages. We described herein a new species in the highly diversified and species-rich genus Atractus on the basis of four specimens from the southeastern slopes of the Ecuadorian Andes. The new species is morphologically similar and apparently closely related to two other allopatric giant congeners (A. gigas and A. touzeti), from which it can be distinguished by their distinct dorsal and ventral coloration, the number of supralabial and infralabial scales, the number of maxillary teeth, and relative width of the head. In addition, we discuss on the ontogenetic trajectories hypotheses and dietary specializations related to evolution of gigantism in the goo-eaters genus Atractus.
Fil: Passos, Paulo. Universidade Federal do Rio de Janeiro; Brasil
Fil: Scanferla, Carlos Agustín. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Salta. Instituto de Bio y Geociencias del NOA. Universidad Nacional de Salta. Facultad de Ciencias Naturales. Museo de Ciencias Naturales. Instituto de Bio y Geociencias del NOA; Argentina
Fil: Melo Sampaio, Paulo Roberto. Universidade Federal do Rio de Janeiro; Brasil
Fil: Brito, Jorge. Escuela Politécnica Nacional; Ecuador. Instituto Nacional de Biodiversidad; Ecuador
Fil: Almendariz, Ana. Escuela Politécnica Nacional; Ecuador
Materia
ATRACTUS GIGAS
ATRACTUS TOUZETI
DIETARY SHIFT
GOO-EATER SNAKES
MACROSTOMY
POSTNATAL ONTOGENY
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:11336/91673
Acceder
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oai_identifier_str oai:ri.conicet.gov.ar:11336/91673
network_acronym_str CONICETDig
repository_id_str 3498
network_name_str CONICET Digital (CONICET)
spelling A giant on the ground: another large-bodied Atractus (Serpentes: Dipsadinae) from Ecuadorian Andes, with comments on the dietary specializations of the goo-eaters snakesPassos, PauloScanferla, Carlos AgustínMelo Sampaio, Paulo RobertoBrito, JorgeAlmendariz, AnaATRACTUS GIGASATRACTUS TOUZETIDIETARY SHIFTGOO-EATER SNAKESMACROSTOMYPOSTNATAL ONTOGENYhttps://purl.org/becyt/ford/1.6https://purl.org/becyt/ford/1Body-size is significantly correlated with the number of vertebrae (pleomerism) in multiple vertebrate lineages, indicating that somitogenesis process is an important factor dictating evolutionary change associated to phyletic allometry and, consequently, species fitness and diversification. However, the role of the evolution of extreme body sizes (dwarfism and gigantism) remains elusive in snakes, mainly with respect to postnatal ontogeny in dietary preferences associated with evolution of gigantism in many lineages. We described herein a new species in the highly diversified and species-rich genus Atractus on the basis of four specimens from the southeastern slopes of the Ecuadorian Andes. The new species is morphologically similar and apparently closely related to two other allopatric giant congeners (A. gigas and A. touzeti), from which it can be distinguished by their distinct dorsal and ventral coloration, the number of supralabial and infralabial scales, the number of maxillary teeth, and relative width of the head. In addition, we discuss on the ontogenetic trajectories hypotheses and dietary specializations related to evolution of gigantism in the goo-eaters genus Atractus.Fil: Passos, Paulo. Universidade Federal do Rio de Janeiro; BrasilFil: Scanferla, Carlos Agustín. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Salta. Instituto de Bio y Geociencias del NOA. Universidad Nacional de Salta. Facultad de Ciencias Naturales. Museo de Ciencias Naturales. Instituto de Bio y Geociencias del NOA; ArgentinaFil: Melo Sampaio, Paulo Roberto. Universidade Federal do Rio de Janeiro; BrasilFil: Brito, Jorge. Escuela Politécnica Nacional; Ecuador. Instituto Nacional de Biodiversidad; EcuadorFil: Almendariz, Ana. Escuela Politécnica Nacional; EcuadorAcademia Brasileira de Ciencias2018-05-17info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionhttp://purl.org/coar/resource_type/c_6501info:ar-repo/semantics/articuloapplication/pdfapplication/pdfhttp://hdl.handle.net/11336/91673Passos, Paulo; Scanferla, Carlos Agustín; Melo Sampaio, Paulo Roberto; Brito, Jorge; Almendariz, Ana; A giant on the ground: another large-bodied Atractus (Serpentes: Dipsadinae) from Ecuadorian Andes, with comments on the dietary specializations of the goo-eaters snakes; Academia Brasileira de Ciencias; Anais da Academia Brasileira de Ciencias; 91; 1; 17-5-2018; 1-140001-37651678-2690CONICET DigitalCONICETenginfo:eu-repo/semantics/altIdentifier/url/http://ref.scielo.org/74kmf2info:eu-repo/semantics/altIdentifier/doi/10.1590/0001-3765201820170976info:eu-repo/semantics/openAccesshttps://creativecommons.org/licenses/by-nc-sa/2.5/ar/reponame:CONICET Digital (CONICET)instname:Consejo Nacional de Investigaciones Científicas y Técnicas2025-10-15T14:39:24Zoai:ri.conicet.gov.ar:11336/91673instacron: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:34982025-10-15 14:39:24.99CONICET Digital (CONICET) - Consejo Nacional de Investigaciones Científicas y Técnicasfalse
dc.title.none.fl_str_mv A giant on the ground: another large-bodied Atractus (Serpentes: Dipsadinae) from Ecuadorian Andes, with comments on the dietary specializations of the goo-eaters snakes
title A giant on the ground: another large-bodied Atractus (Serpentes: Dipsadinae) from Ecuadorian Andes, with comments on the dietary specializations of the goo-eaters snakes
spellingShingle A giant on the ground: another large-bodied Atractus (Serpentes: Dipsadinae) from Ecuadorian Andes, with comments on the dietary specializations of the goo-eaters snakes
Passos, Paulo
ATRACTUS GIGAS
ATRACTUS TOUZETI
DIETARY SHIFT
GOO-EATER SNAKES
MACROSTOMY
POSTNATAL ONTOGENY
title_short A giant on the ground: another large-bodied Atractus (Serpentes: Dipsadinae) from Ecuadorian Andes, with comments on the dietary specializations of the goo-eaters snakes
title_full A giant on the ground: another large-bodied Atractus (Serpentes: Dipsadinae) from Ecuadorian Andes, with comments on the dietary specializations of the goo-eaters snakes
title_fullStr A giant on the ground: another large-bodied Atractus (Serpentes: Dipsadinae) from Ecuadorian Andes, with comments on the dietary specializations of the goo-eaters snakes
title_full_unstemmed A giant on the ground: another large-bodied Atractus (Serpentes: Dipsadinae) from Ecuadorian Andes, with comments on the dietary specializations of the goo-eaters snakes
title_sort A giant on the ground: another large-bodied Atractus (Serpentes: Dipsadinae) from Ecuadorian Andes, with comments on the dietary specializations of the goo-eaters snakes
dc.creator.none.fl_str_mv Passos, Paulo
Scanferla, Carlos Agustín
Melo Sampaio, Paulo Roberto
Brito, Jorge
Almendariz, Ana
author Passos, Paulo
author_facet Passos, Paulo
Scanferla, Carlos Agustín
Melo Sampaio, Paulo Roberto
Brito, Jorge
Almendariz, Ana
author_role author
author2 Scanferla, Carlos Agustín
Melo Sampaio, Paulo Roberto
Brito, Jorge
Almendariz, Ana
author2_role author
author
author
author
dc.subject.none.fl_str_mv ATRACTUS GIGAS
ATRACTUS TOUZETI
DIETARY SHIFT
GOO-EATER SNAKES
MACROSTOMY
POSTNATAL ONTOGENY
topic ATRACTUS GIGAS
ATRACTUS TOUZETI
DIETARY SHIFT
GOO-EATER SNAKES
MACROSTOMY
POSTNATAL ONTOGENY
purl_subject.fl_str_mv https://purl.org/becyt/ford/1.6
https://purl.org/becyt/ford/1
dc.description.none.fl_txt_mv Body-size is significantly correlated with the number of vertebrae (pleomerism) in multiple vertebrate lineages, indicating that somitogenesis process is an important factor dictating evolutionary change associated to phyletic allometry and, consequently, species fitness and diversification. However, the role of the evolution of extreme body sizes (dwarfism and gigantism) remains elusive in snakes, mainly with respect to postnatal ontogeny in dietary preferences associated with evolution of gigantism in many lineages. We described herein a new species in the highly diversified and species-rich genus Atractus on the basis of four specimens from the southeastern slopes of the Ecuadorian Andes. The new species is morphologically similar and apparently closely related to two other allopatric giant congeners (A. gigas and A. touzeti), from which it can be distinguished by their distinct dorsal and ventral coloration, the number of supralabial and infralabial scales, the number of maxillary teeth, and relative width of the head. In addition, we discuss on the ontogenetic trajectories hypotheses and dietary specializations related to evolution of gigantism in the goo-eaters genus Atractus.
Fil: Passos, Paulo. Universidade Federal do Rio de Janeiro; Brasil
Fil: Scanferla, Carlos Agustín. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Salta. Instituto de Bio y Geociencias del NOA. Universidad Nacional de Salta. Facultad de Ciencias Naturales. Museo de Ciencias Naturales. Instituto de Bio y Geociencias del NOA; Argentina
Fil: Melo Sampaio, Paulo Roberto. Universidade Federal do Rio de Janeiro; Brasil
Fil: Brito, Jorge. Escuela Politécnica Nacional; Ecuador. Instituto Nacional de Biodiversidad; Ecuador
Fil: Almendariz, Ana. Escuela Politécnica Nacional; Ecuador
description Body-size is significantly correlated with the number of vertebrae (pleomerism) in multiple vertebrate lineages, indicating that somitogenesis process is an important factor dictating evolutionary change associated to phyletic allometry and, consequently, species fitness and diversification. However, the role of the evolution of extreme body sizes (dwarfism and gigantism) remains elusive in snakes, mainly with respect to postnatal ontogeny in dietary preferences associated with evolution of gigantism in many lineages. We described herein a new species in the highly diversified and species-rich genus Atractus on the basis of four specimens from the southeastern slopes of the Ecuadorian Andes. The new species is morphologically similar and apparently closely related to two other allopatric giant congeners (A. gigas and A. touzeti), from which it can be distinguished by their distinct dorsal and ventral coloration, the number of supralabial and infralabial scales, the number of maxillary teeth, and relative width of the head. In addition, we discuss on the ontogenetic trajectories hypotheses and dietary specializations related to evolution of gigantism in the goo-eaters genus Atractus.
publishDate 2018
dc.date.none.fl_str_mv 2018-05-17
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/11336/91673
Passos, Paulo; Scanferla, Carlos Agustín; Melo Sampaio, Paulo Roberto; Brito, Jorge; Almendariz, Ana; A giant on the ground: another large-bodied Atractus (Serpentes: Dipsadinae) from Ecuadorian Andes, with comments on the dietary specializations of the goo-eaters snakes; Academia Brasileira de Ciencias; Anais da Academia Brasileira de Ciencias; 91; 1; 17-5-2018; 1-14
0001-3765
1678-2690
CONICET Digital
CONICET
url http://hdl.handle.net/11336/91673
identifier_str_mv Passos, Paulo; Scanferla, Carlos Agustín; Melo Sampaio, Paulo Roberto; Brito, Jorge; Almendariz, Ana; A giant on the ground: another large-bodied Atractus (Serpentes: Dipsadinae) from Ecuadorian Andes, with comments on the dietary specializations of the goo-eaters snakes; Academia Brasileira de Ciencias; Anais da Academia Brasileira de Ciencias; 91; 1; 17-5-2018; 1-14
0001-3765
1678-2690
CONICET Digital
CONICET
dc.language.none.fl_str_mv eng
language eng
dc.relation.none.fl_str_mv info:eu-repo/semantics/altIdentifier/url/http://ref.scielo.org/74kmf2
info:eu-repo/semantics/altIdentifier/doi/10.1590/0001-3765201820170976
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
dc.publisher.none.fl_str_mv Academia Brasileira de Ciencias
publisher.none.fl_str_mv Academia Brasileira de Ciencias
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
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score 13.22299

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