Jeannette Hanby | The University of Arizona (original) (raw)

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Papers by Jeannette Hanby

American Journal of Physical Anthropology, 1980

Monkey groups are characterized in terms of their networks of relationships. Six groups, each con... more Monkey groups are characterized in terms of their networks of relationships. Six groups, each consisting of one adult male, several adult females and immatures, were studied over the same time period. This provided data on interaction patterns within groups and the ways in which individuals' kinship, backgrounds, idiosyncrasies, age and sex affected their interactions. Consistencies and changes in group networks in the course of time and in the face of events such as births, deaths, separations, and introductions are given special attention. Principles of networks are discussed with reference to problems of social structure such as cohesion, permeability, communication, stability and competition.

... 3DX* JEANNETTE P. HANBY Mali Hai, c/o Tanzania National Parks, PO Box 3134, Arusha, Tanzania ... more ... 3DX* JEANNETTE P. HANBY Mali Hai, c/o Tanzania National Parks, PO Box 3134, Arusha, Tanzania ... populations. The results from 2 areas (Kruger and Lake Manyara National Parks) were based on intermittent observations and surveys. ...

... Male lions in large coalitions gain reproductive advantages. J. David Bygott * , Brian CR Ber... more ... Male lions in large coalitions gain reproductive advantages. J. David Bygott * , Brian CR Bertram † & Jeannette P. Hanby *. ... References 1. Packer, C. Nature 265, 441–443 (1977). 2. Schaller, GB The Serengeti Lion (Chicago University Press, 1972). ...

Folia Primatologica, 1971

The sexual behavior of a confined troop of 69 Japanese macaques was observed throughout its 5 mon... more The sexual behavior of a confined troop of 69 Japanese macaques was observed throughout its 5 months breeding season. Males 2 ¼ years of age and older mounted adult females but only males 4½ years and older ejaculated. All females 3 ½ years of age and older were sexually receptive and all but two of the adult females conceived. The

Animal Behaviour, 1974

This study provides data on the form, frequency and contexts for male-male mounting in a confined... more This study provides data on the form, frequency and contexts for male-male mounting in a confined troop of Japanese monkeys observed over a 2-year period. Considerable differences were found between male-male and male-adult female mount events, mainly in frequency of mounts per encounter, seasonal patterning, context, and associated behaviours. There was a variable and small relationship between dominance status and male-male mounting but it was clear that mounting generally increased in situations that might be termed exciting or tense. The results of this and other studies on primates indicate that male-male mounting certainly has a multiplicity of causal factors and instead of labelling it as homosexual or dominance, certain suggested criteria can be used that may help in classifying and eventually in understanding this common and multifaceted gesture. 836 HANBY: MALEWfALE MOUNTING IN MONKEYS 837

Animal Behaviour, 1987

Factors relating to whether subadult lions, Panthera leo, left or stayed in their natal pride wer... more Factors relating to whether subadult lions, Panthera leo, left or stayed in their natal pride were examined for 122 subadults living in Serengeti National Park and Ngorongoro Crater, Tanzania. The 10 variables considered were: sex, age, age-set composition and size, relations with adult males and with adult females, food availability, competition with other pride members, mating opportunities, pride size and population density. The emigration of subadults was influenced by their age and sex, but was most highly correlated with the entry of unfamiliar adult males to the pride. Subadult males always left; subadult females became peripheral or left, unless they were able to mate with the new males. Early mating by such females did not result in early parturition, and may be a sociosexual mechanism allowing them to remain with the pride after a male take-over. If no new males entered the pride, subadults tended to remain, despite increasing aggression from pride members. They did not mate with close relatives, but some left the pride either temporarily or permanently to mate with unfamiliar partners. Pride size was not correlated with subadult emigration, but high population density appeared to facilitate it.

... by BJT MORGAN12), MJA SIMPSON, JEANNETTE P. HANBY and JOAN HALL-CRAGGS (Mathematical Institut... more ... by BJT MORGAN12), MJA SIMPSON, JEANNETTE P. HANBY and JOAN HALL-CRAGGS (Mathematical Institute, University of Kent, Canterbury, and Sub-Department of Animal Behaviour, University of Cambridge, Madingley, England) (With I7 Figures) (Acc. I9-XII-I974) ...

Journal of Zoology, 1985