Revisiting Play Elements and Self-Handicapping in Play: A Comparative Ethogram of Five Old World Monkey Species
Play behavior has been viewed as a mixture of elements drawn from “serious” behavior, interspersed by ritualized play signals. Two other types of play behaviors have been overlooked: patterns that are dissimilar from any serious behavior and patterns with self-handicapping character, that is, those that put the animal into unnecessary disadvantageous positions or situations. Here […]
The efficacy of sex-chromosomal markers in studies of Cercopithecus hybridization: Discovery of a captive hybrid and applications in wild populations
We demonstrate the utility of previously described molecular methods for identifying hybrid Cercopithecus monkeys. Using phylogenetic analyses and DNA sequence comparisons at X-chromosomal and Y-chromosomal loci, we have identified a hybrid animal in the Cheyenne Mountain Zoo (USA)—an identification that was not known a priori but was later confirmed by review of zoo records. The […]