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dc.contributor.author
Passos, Paulo
dc.contributor.author
Scanferla, Carlos Agustín
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Melo Sampaio, Paulo Roberto
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Brito, Jorge
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Almendariz, Ana
dc.date.available
2019-12-06T21:13:54Z
dc.date.issued
2018-05-17
dc.identifier.citation
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
dc.identifier.issn
0001-3765
dc.identifier.uri
http://hdl.handle.net/11336/91673
dc.description.abstract
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.
dc.format
application/pdf
dc.language.iso
eng
dc.publisher
Academia Brasileira de Ciencias
dc.rights
info:eu-repo/semantics/openAccess
dc.rights.uri
https://creativecommons.org/licenses/by-nc-sa/2.5/ar/
dc.subject
ATRACTUS GIGAS
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ATRACTUS TOUZETI
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DIETARY SHIFT
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GOO-EATER SNAKES
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MACROSTOMY
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POSTNATAL ONTOGENY
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Zoología, Ornitología, Entomología, Etología
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Ciencias Biológicas
dc.subject.classification
CIENCIAS NATURALES Y EXACTAS
dc.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
dc.type
info:eu-repo/semantics/article
dc.type
info:ar-repo/semantics/artículo
dc.type
info:eu-repo/semantics/publishedVersion
dc.date.updated
2019-10-18T18:24:02Z
dc.identifier.eissn
1678-2690
dc.journal.volume
91
dc.journal.number
1
dc.journal.pagination
1-14
dc.journal.pais
Brasil
dc.description.fil
Fil: Passos, Paulo. Universidade Federal do Rio de Janeiro; Brasil
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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
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Fil: Melo Sampaio, Paulo Roberto. Universidade Federal do Rio de Janeiro; Brasil
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Fil: Brito, Jorge. Escuela Politécnica Nacional; Ecuador. Instituto Nacional de Biodiversidad; Ecuador
dc.description.fil
Fil: Almendariz, Ana. Escuela Politécnica Nacional; Ecuador
dc.journal.title
Anais da Academia Brasileira de Ciencias
dc.relation.alternativeid
info:eu-repo/semantics/altIdentifier/url/http://ref.scielo.org/74kmf2
dc.relation.alternativeid
info:eu-repo/semantics/altIdentifier/doi/http://dx.doi.org/10.1590/0001-3765201820170976
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