Biogeography

Genetic diversity of Angiopolybia pallens (Lepeletier) (Hymenoptera, Vespidae, Polistinae) explained by the disjunction of South American rainforests

A. F. Carvalho, Santos, G. M. M., Menezes, R. S. T., and Costa, M. A., Genetic diversity of Angiopolybia pallens (Lepeletier) (Hymenoptera, Vespidae, Polistinae) explained by the disjunction of South American rainforests, vol. 13, pp. 89-94, 2014.

Angiopolybia pallens is a swarm-founding wasp that occurs in Atlantic and Amazonian rainforests, which have been isolated from each other by a large arid corridor in central Brazil since the Tertiary. In this study, we used data from polymerase chain reaction-restriction fragment length polymorphism of 16S rDNA to infer some aspects of the genetic diversity and evolutionary history of this social wasp population. Samples collected across the species range in both rainforests showed remarkable differences that separated them into two distinct haplogroups.

Performance of genomic data sets on the estimation of the divergence time of New World and Old World anthropoids

C. G. Schrago and Voloch, C. M., Performance of genomic data sets on the estimation of the divergence time of New World and Old World anthropoids, vol. 13, pp. 1425-1437, 2014.

The origin of New World anthropoids has received renewed attention since the advent of molecular dating methods that relax the assumption of a strict molecular clock. However, the studies conducted to date have estimated the time of the separation of New World and Old World anthropoids at values as different as 70 and 22 Ma. With the aim of investigating the source of the discrepancies in the inferred ages, we have compared the performance of mitochondrial and nuclear markers in two pairs of datasets.

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