Of individuals from the Bukit Panchor, Penang population and their closest relative C. The molecular phylogeny and morphological analysis strongly indicate lineage independence between a subset sampling, significant mean differences in selected scale counts occur between some populations. Population with weakly supported phylogeographic substructuring with no discrete morphological differentiation between Phylogeny, scalation, and color pattern analyses indicate that it is composed of a single, recently expanding, widespread Thus, waves in empirical distributions may be rich in information about the history of population dynamics.Ī review of the taxonomic status of the Bent-toed Gecko Cyrtodactylus quadrivirgatus Taylor, 1962 based on a molecular On the other hand, agreement is better in the transient (nonequilibrium) case, where simulated empirical distributions typically exhibit waves very similar to those predicted by theory. However, computer simulations of such populations generate empirical distributions with many peaks and little resemblance to the theory.
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In equilibrium populations the theoretical curves are free of waves. Reductions in population size initially generate L-shaped distributions with high probability of identity, but these converge rapidly to a new equilibrium. The implications of continued exponential growth are indistinguishable from those of a sudden burst of population growth Bottlenecks in population size also generate waves similar to those produced by a sudden expansion, but with elevated uppertail probabilities. The larger the increase in population size, the smaller will be the distribution's vertical intercept. The smaller the initial population, the steeper will be the leading face of the wave. In this distribution an episode of growth generates a wave that travels to the right, traversing 1 unit of the horizontal axis in each 1/2u generations, where u is the mutation rate. These signatures appear in histograms showing the relative frequencies of pairs of individuals who differ by i sites, where i = 0, 1. hoskini.Įpisodes of population growth and decline leave characteristic signatures in the distribution of nucleotide (or restriction) site differences between pairs of individuals. pronarus represent a species pair distinct from the sublineage represented by C. Concordant genetic and morphological evidence enable the hypothesis that C. in the south, from the Chillagoe area north to Parrot Creek Falls, C. Cyrtodactylus tuberculatus (Lucas & Frost) is formally resurrected for Australian populations in the Cooktown area, from Mt Leswell north to Stanley Island. Evidence is provided for the existence of five endemic species in Australia, allopatrically distributed. louisiadensis, or to a Cyrtodactylus louisiadensis species group defined on shared colour pattern and enlarged subcaudal scales, are rejected.
Previous hypotheses that the Australian populations are assignable to a New Guinea species, C.
The gekkonid lizard genus Cyrtodactylus in Australia is revised based on a combination of morphology and mitochondrial (ND2) sequence data. Additionally, this subset is morphologically distinct from all other Sundaland species of Cyrtodactylus, and as such is described herein as Cyrtodactylus payacola sp. Furthermore, the analyses indicate that the individuals of this subset are conspecific and not part of C.
pantiensis Grismer, Chan, Grismer, Wood & Belabut, 2008 from southern Peninsular Malaysia. The molecular phylogeny and morphological analysis strongly indicate lineage independence between a subset of individuals from the Bukit Panchor, Penang population and their closest relative C. However, based on sampling, significant mean differences in selected scale counts occur between some populations. A review of the taxonomic status of the Bent-toed Gecko Cyrtodactylus quadrivirgatus Taylor, 1962 based on a molecular phylogeny, scalation, and color pattern analyses indicate that it is composed of a single, recently expanding, widespread population with weakly supported phylogeographic substructuring with no discrete morphological differentiation between populations.