| ecological diversification in a group of indomalayan pitvipers (trimeresurus): convergence in taxonomically important traits has implications for species identification. | we analyse molecular and phenotypic evolution in a group of taxonomically problematic indomalayan pitvipers, the trimeresurus sumatranus group. mitochondrial dna sequencing provides a well-resolved phylogeny, with each species representing a distinct lineage. multivariate morphological analysis reveals a high level of phenotypic differentiation, which is congruent between the sexes but does not reflect phylogenetic history. an adaptive explanation for the observed pattern of differentiation is s ... | 2004 | 15271071 |
| fractionation of sumatran pit viper (trimeresurus sumatranus sumatranus) venom by deae-sephacel ion exchange chromatography and some biological properties of the fractions. | sumatran pit viper (trimeresurus sumatranus sumatranus) venom was fractionated by deae-sephacel ion exchange chromatography into seven fractions. fractions 4, 5 and 6 were lethal to mice and exhibited strong hemorrhagic activity, as well as some enzymatic activities. fraction 6 also exhibited potent anticoagulant and thrombin-like activities. analysis of the biological and enzymatic properties of the three lethal fractions suggests that the major lethal component of fractions 4 and 5 may be the ... | 1989 | 2749766 |