Paul J. P. Grobler

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Vervet monkeys (Chlorocebus aethiops) exhibit bright blue scrotal skin which may function to mediate social interactions by acting as a socio-sexual signal. Previous research on scrotal coloration among vervet monkeys was limited to experimental work on captive Ch. a. sabaeus, the least colorful vervet subspecies, and two field studies of the more colorful(More)
For any of the basic domination parameters ir, , i, , or IR, we study graphs for which increases whenever an edge is removed ( -ER-critical graphs) and graphs for which decreases whenever an edge is removed ( −-ER-critical graphs). The latter case is only possible if = i or (perhaps) = ir. We give examples of classes of -ER-critical graphs for an upper(More)
A South African rehabilitation centre for illegally kept vervet monkeysChlorocebus aethiops Linnaeus, 1758 required an evaluation of the genetic status of vervet monkeys, to determine whether animals from different geographical areas may be mixed. We studied animals originating from three geographical regions and used biochemical genetic and morphological(More)
The relationship between humans and non-human primates in South Africa is problematic. On the one hand, vervet monkeys were formerly designated vermin species and could be destroyed at will. On the other hand, many people keep young vervets as pets even though this is illegal, and the animals are confiscated if discovered. Sanctuaries were established to(More)
Captive management of ex situ populations of endangered species is traditionally based on pedigree information derived from studbook data. However, molecular methods could provide a powerful set of complementary tools to verify studbook records and also contribute to improving the understanding of the genetic status of captive populations. Here, we compare(More)
Allele frequency distributions for 15 tetrameric short tandem repeat (STR) loci were determined using the AmpFlSTR® Identifiler Plus™ PCR amplification kit. There was little evidence of departures from Hardy–Weinberg equilibrium or association of alleles of different loci in the population samples. The probability of identity values for the different(More)