In this study, I investigated female social behavior and short-term reproductive success in hybrid baboons (Papio hamadryas anubis x P. h. hamadryas) living in Ethiopia's Awash National Park. The extremely divergent social behaviors of the hamadryas, a harem based, multi-leveled…
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Many non-equatorial species, including rodents such as hamsters, mice, and voles, are photoperiodic. In these species, changes in day length provide cues for the onset of their reproductive season. Alterations in photoperiod can result in profound morphological, physiological, a…
Macaca nigrescens, the Dumoga-Bone macaque, was studied from 1987 to 1990 at Dumoga-Bone National Park, North Sulawesi, Indonesia. Its behavior and grouping patterns were recorded as well as data on weather and fruit abundance. This study was the first year-round study of this s…
The Gram negative Myxoccocus xanthus bacteria provide an ideal model system for the understanding of social behavior in prokaryotes, as these bacteria respond to stress signals by social communication, Upon starvation, M. xanthus cells aggregate to form fruiting bodies within wh…
Anabolic-androgenic steroids (AAS) are synthetic derivatives of testosterone used by over half a million adolescents in the US for their tissue-building potency and performance enhancing effects. Recent studies show AAS use is increasing among teenagers. AAS have behavioral effe…
The effects of cyproheptadine, a serotonin (5-HT) antagonist and clozapine, a 5-HT/dopamine (DA) antagonist, on the agonistic, submissive, and nonagonistic social approach behaviors of aggressive and submissive hamsters were investigated. Research has indicated that 5-HT is invo…