𝔖 Bobbio Scriptorium
✦   LIBER   ✦

Phylogenetic Relationships of Xenodontine Snakes Inferred from 12S and 16S Ribosomal RNA Sequences

✍ Scribed by Nicolas Vidal; Shannon G. Kindl; Alan Wong; S.Blair Hedges

Publisher
Elsevier Science
Year
2000
Tongue
English
Weight
268 KB
Volume
14
Category
Article
ISSN
1055-7903

No coin nor oath required. For personal study only.

✦ Synopsis

The phylogenetic relationships of xenodontine snakes are inferred from sequence analyses of portions of two mitochondrial genes (12S and 16S ribosomal RNA) in 85 species. Although support values for most of the basal nodes are low, the general pattern of cladogenesis observed is congruent with many independent molecular, morphological, and geographical data. The monophyly of xenodontines and the basal position of North American xenodontines in comparison with Neotropical xenodontines are favored, suggesting an Asian-North American origin of xenodontines. West Indian xenodontines (including endemic genera and members of the genus Alsophis) appear to form a monophyletic group belonging to the South American clade. Their mid-Cenozoic origin by dispersal using ocean currents is supported. Within South American mainland xenodontines, the tribes Hydropsini, Pseudoboini, and Xenodontini are monophyletic. Finally, our results suggest that some morphological and ecological traits concerning maxillary dentition, macrohabitat use, and foraging strategy have appeared multiple times during the evolution of xenodontine snakes.

πŸ“œ SIMILAR VOLUMES

Phylogenetic Relationships of the Acanth
Phylogenetic Relationships of the Acanthocephala Inferred from 18S Ribosomal DNA Sequences
✍ Thomas J. Near; James R. Garey; Steven A. Nadler πŸ“‚ Article πŸ“… 1998 πŸ› Elsevier Science 🌐 English βš– 147 KB

Phylogenetic relationships within the Acanthocephala have remained unresolved. Past systematic efforts have focused on creating classifications with little consideration of phylogenetic methods. The Acanthocephala are currently divided into three major taxonomic groups: Archiacanthocephala, Palaeaca

Phylogenetic Relationships of Central Eu
Phylogenetic Relationships of Central European Wolf Spiders (Araneae: Lycosidae) Inferred from 12S Ribosomal DNA Sequences
✍ Karl Zehethofer; Christian Sturmbauer πŸ“‚ Article πŸ“… 1998 πŸ› Elsevier Science 🌐 English βš– 317 KB

We have analyzed a sequence dataset of a portion of mitochondrial 12S rRNA gene of the ribosomal small subunit for 27 species of the family Lycosidae (wolf spiders) from Central Europe, belonging to six genera (Alopecosa, Arctosa, Pardosa, Pirata, Trochosa, and Xerolycosa) and four subfamilies (Evip

Molecular Phylogenetic Relationships of
Molecular Phylogenetic Relationships of Pond Frogs Distributed in the Palearctic Region Inferred from DNA Sequences of Mitochondrial 12S Ribosomal RNA and Cytochrome b Genes
✍ Masayuki Sumida; Mitsuaki Ogata; Midori Nishioka πŸ“‚ Article πŸ“… 2000 πŸ› Elsevier Science 🌐 English βš– 89 KB

The evolutionary relationships of pond frogs distributed in the Far East and Europe were investigated by analyses of nucleotide sequences of mitochondrial 12S ribosomal RNA (12S rRNA) and cytochrome b (cyt b) genes. The nucleotide sequences of a 412-bp segment of the 12S rRNA gene and a 534-bp segme

Phylogenetic Relationships among the Spe
Phylogenetic Relationships among the Species of the Genus Testudo (Testudines: Testudinidae) Inferred from Mitochondrial 12S rRNA Gene Sequences
✍ Antoinette C. van der Kuyl; Donato L. Ph. Ballasina; John T. Dekker; Jolanda Maa πŸ“‚ Article πŸ“… 2002 πŸ› Elsevier Science 🌐 English βš– 141 KB

To test phylogenetic relationships within the genus Testudo (Testudines: Testudinidae), we have sequenced a fragment of the mitochondrial (mt) 12S rRNA gene of 98 tortoise specimens belonging to the genera Testudo, Indotestudo, and Geochelone. Maximum likelihood and neighbor-joining methods identify