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A mitogenomic study on the phylogenetic position of snakes

Douglas, Desiree LU ; Janke, Axel LU and Arnason, Ulfur LU (2006) In Zoologica Scripta 35(6). p.545-558
Abstract
Phylogenetic relationships of squamates (lizards, amphisbaenians and snakes) have received considerable attention, although no consensus has been reached concerning some basal divergences. This paper focuses on the Serpentes (snakes), whose phylogenetic position within the Squamata remains uncertain despite a number of morphological and molecular studies. Some mitogenomic studies have suggested a sister-group relationship between snakes and varanid lizards, while other studies have identified snakes and lizards as sister groups. However, recent studies using nuclear data have presented a different scenario, with snakes being more closely related to anguimorph and iguanian lizards. In this mitogenomic study we have examined the above... (More)
Phylogenetic relationships of squamates (lizards, amphisbaenians and snakes) have received considerable attention, although no consensus has been reached concerning some basal divergences. This paper focuses on the Serpentes (snakes), whose phylogenetic position within the Squamata remains uncertain despite a number of morphological and molecular studies. Some mitogenomic studies have suggested a sister-group relationship between snakes and varanid lizards, while other studies have identified snakes and lizards as sister groups. However, recent studies using nuclear data have presented a different scenario, with snakes being more closely related to anguimorph and iguanian lizards. In this mitogenomic study we have examined the above hypotheses with the inclusion of amphisbaenians, one gekkotan and one acrodont lizard, taxa not represented in previous mitogenomic studies. To this end we have also extended the representation of snakes by sequencing five additional snake genomes: two scolecophidians (Ramphotyphlops australis and Typhlops mirus) two henophidians (Eunectes notaeus and Boa constrictor) and one caenophidian (Elaphe guttata). The phylogenetic analysis recovered snakes and amphisbaenians as sister groups, thereby differing from previous hypotheses. In addition to a discussion on previous morphological and molecular studies in light of the results presented here, the current study also provides some details regarding features of the new snake mitochondrial genomes described. (Less)
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author
; and
organization
publishing date
type
Contribution to journal
publication status
published
subject
keywords
Snakes, phylogeny, lizards, serpentes, mitogenomics, mitochondrial, genome
in
Zoologica Scripta
volume
35
issue
6
pages
545 - 558
publisher
Wiley-Blackwell
external identifiers
  • wos:000241500300001
  • scopus:33750308129
ISSN
0300-3256
DOI
10.1111/j.1463-6409.2006.00257.x
language
English
LU publication?
yes
id
87d6e854-c519-40ab-84fc-2a22d027a671 (old id 384254)
date added to LUP
2016-04-01 16:46:04
date last changed
2021-02-17 04:37:06
@article{87d6e854-c519-40ab-84fc-2a22d027a671,
  abstract     = {Phylogenetic relationships of squamates (lizards, amphisbaenians and snakes) have received considerable attention, although no consensus has been reached concerning some basal divergences. This paper focuses on the Serpentes (snakes), whose phylogenetic position within the Squamata remains uncertain despite a number of morphological and molecular studies. Some mitogenomic studies have suggested a sister-group relationship between snakes and varanid lizards, while other studies have identified snakes and lizards as sister groups. However, recent studies using nuclear data have presented a different scenario, with snakes being more closely related to anguimorph and iguanian lizards. In this mitogenomic study we have examined the above hypotheses with the inclusion of amphisbaenians, one gekkotan and one acrodont lizard, taxa not represented in previous mitogenomic studies. To this end we have also extended the representation of snakes by sequencing five additional snake genomes: two scolecophidians (Ramphotyphlops australis and Typhlops mirus) two henophidians (Eunectes notaeus and Boa constrictor) and one caenophidian (Elaphe guttata). The phylogenetic analysis recovered snakes and amphisbaenians as sister groups, thereby differing from previous hypotheses. In addition to a discussion on previous morphological and molecular studies in light of the results presented here, the current study also provides some details regarding features of the new snake mitochondrial genomes described.},
  author       = {Douglas, Desiree and Janke, Axel and Arnason, Ulfur},
  issn         = {0300-3256},
  language     = {eng},
  number       = {6},
  pages        = {545--558},
  publisher    = {Wiley-Blackwell},
  series       = {Zoologica Scripta},
  title        = {A mitogenomic study on the phylogenetic position of snakes},
  url          = {http://dx.doi.org/10.1111/j.1463-6409.2006.00257.x},
  doi          = {10.1111/j.1463-6409.2006.00257.x},
  volume       = {35},
  year         = {2006},
}