Modern political, social and economic forces are creating new contexts for human-nonhuman primate interaction, creating the possibility of cross-species pathogen transmission. This “hybrid” dissertation examines three facets of cross-species pathogen transmission on the Indonesi…
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The evolution of a gene’s expression profile is commonly assumed to be independent of its genomic neighborhood. This is, however, in contrast to what we know about the lack of autonomy between expression of neighboring genes in extant taxa. Indeed, in all eukaryotic genomes, gen…
The database on hand preferences in non-human primates provides inconsistent and inconclusive findings, and is plagued by gaps and methodological issues. I studied hand preferences in the bonobo, which is a very interesting model for investigating evolutionary hypotheses on huma…
For humans and non-human primates (NHPs) the face represents a particularly important source of social information providing a means of conspecific recognition and cues to personal details including sex, age, and emotional state. The human face may also be fundamental in the tra…
The Tangkoko Nature Reserve in North Sulawesi, Indonesia contains one of the largest remaining populations of critically endangered Sulawesi black macaques (Macaca nigra ) and experiences a high rate of foreign and local ecotourism. Analyses of behavioral interactions between to…
Over the past few decades, researchers have firmly established that a wide range of nonhuman animals exhibit some form of numerical competence. The focus of this research was to define further the extent of numerical ability in rhesus monkeys and to investigate the underlying re…
I conducted a morphological field study of two primate populations ( Macaca ochreata ochreata and M. o. brunnescens of Sulawesi, Indonesia) that have been isolated from one another for approximately 9,000 years, under subtly different ecological conditions. My aims were to (1) d…
The global HIV-1 epidemic is the result of a cross-species transmission of a simian immunodeficiency virus that infects chimpanzees (SIVcpz). There have been no fewer than 12 SIV strains that have crossed into humans: two from chimpanzees, two from western lowland gorillas, and …
For over 40 years, the sexual selection hypothesis of infanticide has sparked primatological interest in the evolutionary basis of this presumptively adaptive behavior. Infanticide by males has been largely accepted as a reproductive strategy in that when a new dominant sire kil…
Our closest living relatives are two species in the genus Pan: bonobos and chimpanzees. Chimpanzees are further divided into four subspecies. While there are a number of phenotypic similarities between bonobos and chimpanzees, there are also a number of differences, particularly…
The identification of the alpha taxonomy of an extinct species is the first step towards understanding its evolutionary history and relationships with other organisms. Alpha taxonomy refers to the initial classification of the specimen based on the analysis of the observable mor…