Tropical biotas provide excellent settings in which to explore mechanisms of evolutionary
diversification, yet these processes remain poorly understood. Pioneering work on …

Amphibians are in decline worldwide. However, their patterns of diversity, especially in the
tropics, are not well understood, mainly because of incomplete information on taxonomy and …

The pantropical genus Vanilla is a member of the Orchidaceae family, one of the largest and
most diverse families of angiosperms in the world. It originated in America and differentiated …

Cophyline narrow-mouthed frogs (Anura: Microhylidae) are a diverse endemic radiation of
Madagascar. Cophylines contain a high proportion of range restricted species and constitute …

Madagascar has become a model region for testing hypotheses of species diversification
and biogeography, and many studies have focused on its diverse and highly endemic …

Using sequences of the mitochondrial 16S rRNA gene, we reconstructed the
phylogeography of six widely distributed Malagasy reptiles: two gekkonid lizard species …

The standardized use of mitochondrial cytochrome c oxidase subunit I (COI) gene
sequences as DNA barcodes has been widely promoted as a high-throughput method for …

The extent of diversity within closely related taxa may be a function of their shared
evolutionary history or of selective forces causing adaptive changes. Examining variation …

Background Numerous researchers have posited that there should be a strong negative
relationship between the evolutionary distance among species and their ecological …

Speciation rates vary substantially across the tree of life. These rates should be linked to the
rate at which population structure forms if a continuum between micro and …