problem (hybrid seed sterility) snowball with divergence while another (hybrid pollen sterility) does not? The snowball prediction depends on the combinatorial pile-up of pairs, triplets, and so on, of independently accumulated substitutions, each of which has some probability of being incompatible. But if a substitution can be incompatible only with substitutions at one other specific locus, t...

“Primatology” Panel Discussion Kate Baker a , Terry L. Maple b , V. Wensley Koch c & Elizabeth V. Lonsdorf d a Tulane National Primate Research Center , Covington, Louisiana b School of Psychology. Georgia Institute of Technology c Animal Care, Animal and Plant Health Inspection Service, U.S. Department of Agriculture , Loveland, Colorado d Lincoln Park Zoo's Lester E. Fisher Center for the Stu...

Male macaques form strong social bonds that enhance competitive ability and mating success, belying theoretical predictions that mate competition should prevent males from cooperating with one another.

The debate whether most profitably to study nonhuman apes, henceforth "apes", in the field or in captivity rests on questionable conceptions about the history of the two research traditions and on questionable notions such as the idea of a species' natural environment. Exposing these assumptions lets us more readily examine the current evidence we have for early rearing influence on ape cogniti...

William McGrew’s excellent volume The Cultured Chimpanzee: Reflections on Cultural Primatology is an apt book at this time in the history of primatology. It extends his previous book, Chimpanzee Material Cultures: Implications for Human Evolution [McGrew, 1992], and more recent publications that argued for the concept of culture in apes [e.g., Whiten et al., 1999], while setting the groundwork ...