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Phylogeography of the bushmaster (Lachesis muta: Viperidae): implications for neotropical biogeography, systematics, and conservation
We used mitochondrial gene sequences to reconstruct phylogenetic relationships among subspecies of the bushmaster, Lachesis muta. These large vipers are widely distributed in lowland tropical forestsExpand
When Cold is Better: Climate-Driven Elevation Shifts Yield Complex Patterns of Diversification and Demography in an Alpine Specialist (American Pika, Ochotona princeps)
TLDR
An ecological niche model of past and future pika distributions highlights the influence of climate on species range and indicates that the distribution of genetic diversity may change dramatically with continued climate warming. Expand
Recent introduction of a chytrid fungus endangers Western Palearctic salamanders
TLDR
Results show that B. salamandrivorans is restricted to, but highly pathogenic for, salamanders and newts (Urodela), and likely originated and remained in coexistence with a clade of salamander hosts for millions of years in Asia. Expand
HISTORICAL ISOLATION, RANGE EXPANSION, AND SECONDARY CONTACT OF TWO HIGHLY DIVERGENT MITOCHONDRIAL LINEAGES IN SPOTTED SALAMANDERS (AMBYSTOMA MACULATUM)
TLDR
The evolutionary history of spotted salamander populations underscores the generality of biogeographical processes in eastern North America: despite differences in population size, glacial refugia, and vagility, similar signatures of differentiation are evident among and within widespread taxa. Expand
Phylogeography of endemic toads and post-Pliocene persistence of the Brazilian Atlantic Forest.
TLDR
The data refute the recently proposed hypothesis of a southern Holocene colonization of the Atlantic Forest from northern refugia, suggesting instead persistence of forested habitats in the south. Expand
Allometric Engineering: A Causal Analysis of Natural Selection on Offspring Size
TLDR
The results experimentally validate premises underlying theories of optimal egg size: fecundity selection favoring the production of large clutches of small eggs was balanced by survival selection favoring large offspring, but large hatchlings did not always have the highest survival, contrary to most theoretical expectations. Expand
Habitat fragmentation reduces genetic diversity and connectivity among toad populations in the Brazilian Atlantic Coastal Forest
Tropical rainforests are becoming increasingly fragmented and understanding the genetic consequences of fragmentation is crucial for conservation of their flora and fauna. We examined populations ofExpand
Roads, interrupted dispersal, and genetic diversity in timber rattlesnakes.
TLDR
Genetic-assignment analyses revealed that interruption to seasonal migration was the mechanism underlying these patterns and underscore the sizeable impact of roads on this species, the utility of population genetics for studies of road ecology, and the need for mitigating effects of roads. Expand
Latitude, elevational climatic zonation and speciation in New World vertebrates
TLDR
This study quantifies overlap in the climatic distributions of 93 pairs of sister species of mammals, birds, amphibians and reptiles restricted to either the New World tropics or to the Northern temperate zone to suggest evolutionary conservatism in the thermal niches of tropical taxa, coupled with the greater thermal zonation of tropical mountains, may result in increased opportunities for allopatric isolation, speciation and the accumulation of species in tropical montane regions. Expand
Amphibian fungal panzootic causes catastrophic and ongoing loss of biodiversity
TLDR
A global, quantitative assessment of the amphibian chytridiomycosis panzootic demonstrates its role in the decline of at least 501 amphibian species over the past half-century and represents the greatest recorded loss of biodiversity attributable to a disease. Expand
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