The study of genetic exchange resulting from natural hybridization, horizontal gene transfer,
and viral recombination has long been marked by controversy between researchers holding …

Howler monkeys exploit difficult-to-digest and potentially toxic food items such as mature
leaves and unripe fruits; persist across an extreme range of habitat types, including highly …

The genus Alouatta is characterized by a flexible social system in which the reproductive
strategies of males and females show great variability both within and between species …

Hybridization, or the process by which individuals from genetically distinct populations (eg,
species, subspecies) mate and produce at least some offspring, is of great relevance to …

Hybridization is relatively well documented among Old World primates, but poorly
investigated among New World monkeys. We investigated hybridization between the …

Hybridization has recently been identified as a pervasive force in the evolution of primates.
In this study, we characterized a hybrid zone between two species of brown lemur (Eulemur …

A. seniculus, A. sara and A. caraya). These data were used to address two main issues: 1-to
determine which red howler monkey taxa were distributed in Southern Peru (four of the …

The aim of this study was to develop an objective method to determine the incidence of
pleiomorphisms and its influence on the distribution of sperm morphometric subpopulations …

We studied a zone of sympatry between Alouatta seniculus and Alouatta palliata on the left
bank of the Atrato River (Chocó). We located 110 groups of Alouatta, consisting of 81 groups …

Lice are highly specialized parasites that spend their entire life cycle on their host. Thus, a
particular species of chewing lice is often restricted either to a single host species or to a …