A molecular phylogenetic analysis of diversification in Amazonian Anolis lizards

Citation
Re. Glor et al., A molecular phylogenetic analysis of diversification in Amazonian Anolis lizards, MOL ECOL, 10(11), 2001, pp. 2661-2668
Citations number
36
Language
INGLESE
art.tipo
Article
Categorie Soggetti
Environment/Ecology,"Molecular Biology & Genetics
Journal title
MOLECULAR ECOLOGY
ISSN journal
0962-1083 → ACNP
Volume
10
Issue
11
Year of publication
2001
Pages
2661 - 2668
Database
ISI
SICI code
0962-1083(200111)10:11<2661:AMPAOD>2.0.ZU;2-C
Abstract
We present a mitochondrial DNA (mtDNA) haplotype phylogeny for Amazonian An olis lizards, including geographical sampling within four species distribut ed across the Amazon basin (A. fuscoauratus, A. nitens, A. ortonii and A. p unctatus). Approximately 1500 bp of mtDNA encoding ND2, COI and four transf er RNAs (tRNAs) are reported for 39 specimens representing four to five pop ulations of each widespread species, plus eight outgroups. These new sequen ces are aligned with eight previously published sequences, yielding 914 var iable characters and 780 parsimony-informative characters. Phylogenetic ana lyses using maximum parsimony and maximum likelihood reject the hypothesis that Amazonian anoles form a monophyletic group excluding Central American and Caribbean anoles, and suggest multiple faunal exchanges among these reg ions. Haplotype divergence among geographical populations of A. nitens, who se variation was influential in formulating the Pleistocene refuge hypothes is of Amazonian speciation, is very large (13-22% sequence difference), sug gesting that these populations separated well before the Pleistocene. Haplo type divergences among geographical populations of A. fuscoauratus (3-4%), A. punctatus (4-9%) and A. ortonii (6-8%) also indicate pre-Pleistocene dif ferentiation within each species, but temporally incongruent patterns among species.