Topographical Anatomy of the Blunthead Treesnake, Imantodes cenchoa (Linnaeus, 1758) (Colubridae: Xenodontinae)

Imantodes cenchoa (Duméril, 1853) is an arboreal, nocturnal and oviparous xenodontine snake, which feeds on amphibians and lizards. It is found in Central and South America, including northern and central Brazil. In this work, we investigated the relationship between topographic anatomy and habitat...

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Autores principales:	Aveiro-Lins,Gustavo, Rocha-Barbosa,Oscar, Salomão,Maria da Graça, Puorto,Giuseppe, de Castro Loguercio,Mariana Fiuza
Lenguaje:	English
Publicado:	Sociedad Chilena de Anatomía 2006
Materias:	Snakes Ecomorphology Anatomy Allometry Arboreality
Acceso en línea:	http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0717-95022006000100009
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spelling	oai:scielo:S0717-950220060001000092006-09-07Topographical Anatomy of the Blunthead Treesnake, Imantodes cenchoa (Linnaeus, 1758) (Colubridae: Xenodontinae)Aveiro-Lins,GustavoRocha-Barbosa,OscarSalomão,Maria da GraçaPuorto,Giuseppede Castro Loguercio,Mariana Fiuza Snakes Ecomorphology Anatomy Allometry Arboreality Imantodes cenchoa (Duméril, 1853) is an arboreal, nocturnal and oviparous xenodontine snake, which feeds on amphibians and lizards. It is found in Central and South America, including northern and central Brazil. In this work, we investigated the relationship between topographic anatomy and habitat in I. cenchoa. Twenty specimens (13 non pregnant females and 7 males) were examined. The topographic anatomy study was realized through observations of the internal anatomy, particularly the position and size of lung, heart, liver, left and right gonads and left and right kidneys. Results showed that all the organs are located in a posterior position in relation to the snout vent length (SVL). The centre of gravity is found at about 74% of SVL in both males and females. In males, no positive allometry was observed among the positions of the organs. Negative allometry in females was observed regarding the position of the anterior tip of the left kidney, the anterior and posterior tips of the right kidney and in both ovaries. In males, negative allometry is present in the position of all the organs. The distance between the last follicle and the cloaca was 8.78% of SVL. Our data corroborate the idea that the posterior position of all internal organs is linked to a habitat specialization of a snake, linking the arboreal species I. cenchoa with a relatively posterior internal topographyinfo:eu-repo/semantics/openAccessSociedad Chilena de AnatomíaInternational Journal of Morphology v.24 n.1 20062006-03-01text/htmlhttp://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0717-95022006000100009en10.4067/S0717-95022006000100009
institution	Scielo Chile
collection	Scielo Chile
language	English
topic	Snakes Ecomorphology Anatomy Allometry Arboreality
spellingShingle	Snakes Ecomorphology Anatomy Allometry Arboreality Aveiro-Lins,Gustavo Rocha-Barbosa,Oscar Salomão,Maria da Graça Puorto,Giuseppe de Castro Loguercio,Mariana Fiuza Topographical Anatomy of the Blunthead Treesnake, Imantodes cenchoa (Linnaeus, 1758) (Colubridae: Xenodontinae)
description	Imantodes cenchoa (Duméril, 1853) is an arboreal, nocturnal and oviparous xenodontine snake, which feeds on amphibians and lizards. It is found in Central and South America, including northern and central Brazil. In this work, we investigated the relationship between topographic anatomy and habitat in I. cenchoa. Twenty specimens (13 non pregnant females and 7 males) were examined. The topographic anatomy study was realized through observations of the internal anatomy, particularly the position and size of lung, heart, liver, left and right gonads and left and right kidneys. Results showed that all the organs are located in a posterior position in relation to the snout vent length (SVL). The centre of gravity is found at about 74% of SVL in both males and females. In males, no positive allometry was observed among the positions of the organs. Negative allometry in females was observed regarding the position of the anterior tip of the left kidney, the anterior and posterior tips of the right kidney and in both ovaries. In males, negative allometry is present in the position of all the organs. The distance between the last follicle and the cloaca was 8.78% of SVL. Our data corroborate the idea that the posterior position of all internal organs is linked to a habitat specialization of a snake, linking the arboreal species I. cenchoa with a relatively posterior internal topography
author	Aveiro-Lins,Gustavo Rocha-Barbosa,Oscar Salomão,Maria da Graça Puorto,Giuseppe de Castro Loguercio,Mariana Fiuza
author_facet	Aveiro-Lins,Gustavo Rocha-Barbosa,Oscar Salomão,Maria da Graça Puorto,Giuseppe de Castro Loguercio,Mariana Fiuza
author_sort	Aveiro-Lins,Gustavo
title	Topographical Anatomy of the Blunthead Treesnake, Imantodes cenchoa (Linnaeus, 1758) (Colubridae: Xenodontinae)
title_short	Topographical Anatomy of the Blunthead Treesnake, Imantodes cenchoa (Linnaeus, 1758) (Colubridae: Xenodontinae)
title_full	Topographical Anatomy of the Blunthead Treesnake, Imantodes cenchoa (Linnaeus, 1758) (Colubridae: Xenodontinae)
title_fullStr	Topographical Anatomy of the Blunthead Treesnake, Imantodes cenchoa (Linnaeus, 1758) (Colubridae: Xenodontinae)
title_full_unstemmed	Topographical Anatomy of the Blunthead Treesnake, Imantodes cenchoa (Linnaeus, 1758) (Colubridae: Xenodontinae)
title_sort	topographical anatomy of the blunthead treesnake, imantodes cenchoa (linnaeus, 1758) (colubridae: xenodontinae)
publisher	Sociedad Chilena de Anatomía
publishDate	2006
url	http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0717-95022006000100009
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Topographical Anatomy of the Blunthead Treesnake, Imantodes cenchoa (Linnaeus, 1758) (Colubridae: Xenodontinae)

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