We found a match
Your institution may have rights to this item. Sign in to continue.
- Title
Phylogeography and species limits in theGymnodactylus darwiniicomplex (Gekkonidae, Squamata): genetic structure coincides with river systems in the Brazilian Atlantic Forest.
- Authors
Pellegrino, Katia C. M.; Rodrigues, Miguel T.; Waite, Aaron N.; Morando, Mariana; Yassuda, Yatiyo Y.; Sites Jr., Jack W.
- Abstract
Phylogenetic analyses based on mtDNA cytochrome bwere performed in 42 lizards of theGymnodactylus darwiniicomplex from three regions within Brazil's Atlantic Forest. Mainland regions and continental shelf islands in the south-eastern range and mainland areas from the north-east were sampled. The criteria of maximum parsimony (MP), maximum likelihood (ML) and Bayesian methods were explored, with the robustness for nodes assessed by bootstrapping (MP and ML) and posterior probabilities (Bayesian searches). By all methods, three distinctive phylogroups were recovered: a south-eastern clade (SE) and two clades from northern regions (NE1 and NE2). The pattern of genetic structure of the major clades coincided with the presence of river systems in the Atlantic Forest, and based on corrected genetic distances between those clades, divergence times were tentatively estimated using mtDNA rates calibrated for squamate reptiles. The putative role of Atlantic Forest rivers in generating differentiation is discussed. We present a hypothesis of species limits forG. darwinii, based on concordant lines of evidence including cytogenetic and mtDNA analyses. Two chromosome races (cytotype A, 2n = 38; and cytotype B, 2n = 40) had distributions concordant with clades SE and NE1 + NE2, respectively. These races are interpreted to be full species on the basis of a number of empirical criteria. © 2005 The Linnean Society of London,Biological Journal of the Linnean Society, 2005,85, 13–26.
- Subjects
PHYLOGEOGRAPHY; BIOGEOGRAPHY; GECKOS; FORESTS &; forestry; CONTINENTAL shelf; TERRITORIAL waters
- Publication
Biological Journal of the Linnean Society, 2005, Vol 85, Issue 1, p13
- ISSN
0024-4066
- Publication type
Article
- DOI
10.1111/j.1095-8312.2005.00472.x