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T T Struhsaker

Publications and source records attributed to T T Struhsaker.

6 recordsLinked to original sources
PubMed1977

Infanticide and social organization in the redtail monkey (Cercopithecus ascanius schmidti) in the Kibale Forest, Uganda.

The redtail monkeys of the Kibale Forest, W. Uganda, live in social groups of about 35 members with only one adult male. In one of the study groups the harem male was replaced by a new male from outside the group. This male-replacement was followed by the new male killing and eating two newborn infants in the group. Infants and young juveniles older than one month were not attacked. Following the infanticide the new male copulated with several adult females in the group. 8 months after this male joined the group, 5 other adult and subadult males associated with it. This multimale influx was accompanied by frequent and intense aggression among the males. Comparisons are made with the studies of langurs in India and Ceylon and it is suggested that infanticide following male-replacement in the harem affords reproductive advantages to the new male.

Animals↗
PubMed1967

Behavior of vervet monkeys and other cercopithecines. New data show structural uniformities in the gestures of semiarboreal and terrestrial cercopithecines.

A comparison of the communicative gestures of vervets with those of other cercopithecines reveals both similarities and differences. Examples have been given of gestures (i) exhibited by all cercopithecines, (ii) rare or absent in vervets and common in several other species, (iii) demonstrated by vervets and a few other cercopithecines, and (iv) common in vervets and rare or absent in other members of the subfamily. Vervets, baboons, and rhesus monkeys have approximately the same number of visual signals in their behavioral repertoires-46, 42, and 49, respectively. Patas monkeys seem to have a smaller repertoire. Fifty-nine percent of the vervet patterns have also been described for rhesus monkeys, 63 percent for baboons, and 54 percent for patas. In cercopithecines, visual communicative patterns seem to be evolutionarily one of the most stable forms of behavior, in structural terms. Some of the greatest differences in communicative gestures are differences in the temporal aspects. In species of this subfamily, vocal patterns seem to vary more than visual signals. Greater structural differences in communicative gestures may be found in the Cercopithecinae when systematic field studies are made of some of the forest-dwelling species, about which we know very little.

Animals↗