نتایج جستجو برای: macaca mulatta
تعداد نتایج: 13932 فیلتر نتایج به سال:
Why regularities in personality can be described with particular dimensions is a basic question in differential psychology. Nonhuman primates can also be characterized in terms of personality structure. Comparative approaches can help reveal phylogenetic constraints and social and ecological patterns associated with the presence or absence of specific personality dimensions. We sought to determ...
[This corrects the article DOI: 10.1371/journal.pone.0157108.].
When mammalian social groups exceed their optimal size, they often tend to split. In view of the potential evolutionary benefits, it should be more advantageous for animals to stay with kin, rather than nonkin, during such fission events. In the present study, the spontaneous fission of two social groups, R and S, of rhesus macaques living on Cayo Santiago, Puerto Rico, provided the opportunity...
This study of rhesus macaques (Macaca mulatta) investigated whether individual differences in emotionality, as measured by scratching frequencies, are stable over time and across seasons. Five adult females living in captive social groups were observed during two consecutive birth seasons and five females during the birth and the mating season. Scratching frequencies were higher during the birt...
In many primates, infants possess distinctive coloration that changes as a function of age. This colour is thought to serve the purpose of eliciting caretaking behaviour from the mother as well as other conspecifics. The present study investigated the responses of adult female rhesus macaques (Macaca mulatta) to pictures of infant faces in relation to infant age and facial coloration. Study ani...
The monkey described was a male Macaca mulatta, aged 3 years, 5 months at death. He had been born on March 17, 1961 in the monkey colony of the Department of Physiology of the University of Pittsburgh. He was the product of a second pregnancy with a gestation of about six months and a normal birth weight of 425 gm. The mother's first pregnancy had resulted in a spontaneous abortion. During her ...
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