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Assessing species boundaries and the phylogenetic position of the rare Szechwan ratsnake, Euprepiophis perlaceus (Serpentes: Colubridae), using coalescent-based methods.
Delimiting species and clarifying phylogenetic relationships are the main goals of systematics. For species with questionable taxonomic status, species delimitation approaches using multi-speciesExpand
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Toxin-resistant isoforms of Na+/K+-ATPase in snakes do not closely track dietary specialization on toads
Toads are chemically defended by bufadienolides, a class of cardiotonic steroids that exert toxic effects by binding to and disabling the Na+/K+-ATPases of cell membranes. Some predators, including aExpand
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Natural history notes
HELICOPS MODESTUS (Water Snake): PREY. The genus Helicops currently comprises 15 species of aquatic xenodontine snakes widely distributed in south America, occurring from Colombia to ArgentinaExpand
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Dramatic dietary shift maintains sequestered toxins in chemically defended snakes
Significance Animals protected by sequestered toxins must employ an alternative source of defensive chemicals when a shift in diet evolves. Snakes of the genus Rhabdophis possess defensive glandsExpand
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Extensive genetic divergence in the East Asian natricine snake, Rhabdophis tigrinus (Serpentes: Colubridae), with special reference to prominent geographical differentiation of the mitochondrial
We investigated intraspecific phylogenetic relationships in the natricine snake, Rhabdophis tigrinus. A partial sequence of mitochondrial cytochrome b gene (990 bp) was sequenced for 220 individualsExpand
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Taxonomic Validity and Phylogeography of the East Eurasian Natricine Snake, Rhabdophis lateralis (Berthold, 1859) (Serpentes: Colubridae), as Inferred from Mitochondrial DNA Sequence Data
Abstract: We investigated the phylogenetic status and pattern of geographic variation in Rhabdophis lateralis on the basis of samples from across continental China, southeastern Russia, and theExpand
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Extremely Low Genetic Diversity in the Japanese Population of Zootoca vivipara (Squamata: Lacertidae) Revealed by Mitochondrial DNA
Abstract: Genetic diversity in the Japanese population of Zootoca vivipara was investigated using partial sequences of mitochondrial cytochrome b (706 bp) gene for 24 individuals from three sites.Expand
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Evolution of nuchal glands, unusual defensive organs of Asian natricine snakes (Serpentes: Colubridae), inferred from a molecular phylogeny
Abstract A large body of evidence indicates that evolutionary innovations of novel organs have facilitated the subsequent diversification of species. Investigation of the evolutionary history of suchExpand
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A new species of the genus Rhabdophis Fitzinger, 1843 (Squamata: Colubridae) from Guangdong Province, southern China.
A new species, Rhabdophis guangdongensis sp. nov., is described from the Guangdong Province, China. It can be easily distinguished from other known congeners by cyt b and c-mos sequences, and by theExpand
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Antipredator Displays and Prey Chemical Preference of an Asian Natricine Snake, Macropisthodon rudis(Squamata: Colubridae)
Abstract: Several Asian natricine snakes are known to possess special organs called nuchal glands. Extensive studies on the nuchal glands of Rhabdophis tigrinus have shown that the glands containExpand
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