摘要:

AbstractThe body and leg skin temperatures of five pigtailed macaques (Macaca nemestrina) were measured at various ambient air temperatures ranging from 22 to 32°C over 24‐h periods. The rhythm in core body temperature persisted in all ambient air temperatures, and the rhythm in leg skin temperature was suppressed at the higher and lower ambient temperatures. This suggests that at the upper and lower regions of the thermoneutral zone, either a rhythm in heat production or a heat loss rhythm other than leg skin temperature is regulating the core body temperature rhythm. It was also found that the mean colonic temperature increased linearly with an increase in ambient temperature and that a phase relationship existed between ambient temperature and colonic temperature. In addition, as the ambient temperature increased, additional sites along the distal portion of the leg were recruited for vasomotor heat lo

ISSN:0275-2565    

DOI:10.1002/ajp.1350090102

出版商:Wiley Subscription Services, Inc., A Wiley Company    

年代:1985

数据来源: WILEY

摘要:

AbstractA 3‐month field study was conducted in Panama to determine presence and relative abundance ofSaguinus geoffroyi, the Geoffroy's tamarin, and status of its habitat (see Acknowledgments for taxonomic note). This primate has a wide geographical distribution in eastern Panama; however, local distribution is highly variable. Tropical forest habitat is rapidly being converted for agriculture and timber. Areas where human access was strictly limited showed tamarin densities significantly greater than in less protected areas. Disturbance has a distinct impact on population densities. There may also be a relationship between tamarin abundance and specific types of vegetation. Future actions regarding the conservation ofS. geoffroyiand its habitat are recommende

ISSN:0275-2565    

DOI:10.1002/ajp.1350090103

出版商:Wiley Subscription Services, Inc., A Wiley Company    

年代:1985

数据来源: WILEY

摘要:

AbstractPotential resource overlap between howling monkeys and other arboreal mammals was studied in the rain forest of Los Tuxtlas, Veracruz, Mexico. Eight species of mammals belonging to the orders Primates, Carnivora, Rodentia, and Marsupialia were found to share the canopy and to overlap trophically with howling monkeys. These mammals made up 77% andAlouatta23% of the arboreal mammalian biomass under consideration. The arboreal porcupine and spider monkey were the only mammals that also fed on leaves. However, in this feeding niche,Alouattais the only important mammalian folivore in Los Tuxtlas, and resource depression derived from leaf‐eating insects is more important. The eight arboreal mammals may exert more pressure upon fruit resources, for they consumed 75% of the estimated total dry weight of fruit/ha/yr consumed by arboreal mammal

ISSN:0275-2565    

DOI:10.1002/ajp.1350090104

出版商:Wiley Subscription Services, Inc., A Wiley Company    

年代:1985

数据来源: WILEY

摘要:

AbstractResponses of six squirrel monkey (Saimiri sciureus) mothers to playback of a single call type, the “isolation peep,” made by their own infants were tested after mothers and infants had been separated for more than a week. The playback tapes were edited from tapes containing mixed vocal material recorded when infants and mothers could see but not touch each other. Mothers showed recognition of their own infants compared to other familiar infants by increases in four measures of proximity to the speaker. These data provide evidence that maternal recognition of infants by means of acoustic cues is possible when the test stimuli consist of examples of a single call type with demonstrated individual

ISSN:0275-2565    

DOI:10.1002/ajp.1350090105

出版商:Wiley Subscription Services, Inc., A Wiley Company    

年代:1985

数据来源: WILEY

摘要:

AbstractWild chimpanzees (Pan troglodytes) used probes made of vegetation to fish for termites (Macrotermes herus) in the Mahale Mountains of western Tanzania. Data on both the artefacts and behavior associated with their use were recorded over a 5‐month period. The chimpanzees of one unit group, B Group, were seen four times to use the tools to extract the insects from their mounds. A sample of 290 tools was collected and analyzed in terms of age, seasonality, length, width, class of raw materials, species, methods of making, extent of use, and damage incurred through use. There were differences across groups in tool use in feeding on termites; some could be related to biotic factors, but others appeared to be cultural difference

ISSN:0275-2565    

DOI:10.1002/ajp.1350090106

出版商:Wiley Subscription Services, Inc., A Wiley Company    

年代:1985

数据来源: WILEY

摘要:

AbstractLate‐prophase high‐resolution chromosomes were successfully cultured for 22 of 27Macaca mulattasamples. Twelve of the successful cultures were adequate for karyotyping high‐resolution spreads. High‐resolution chromosome technique provides an important contribution to primate genetics because it can be used to identify chromosomal anomalies undetected in metaphase spreads and may be useful for paternity exclusion a

ISSN:0275-2565    

DOI:10.1002/ajp.1350090107

出版商:Wiley Subscription Services, Inc., A Wiley Company    

年代:1985

数据来源: WILEY

ISSN:0275-2565    

DOI:10.1002/ajp.1350090108

出版商:Wiley Subscription Services, Inc., A Wiley Company    

年代:1985

数据来源: WILEY

ISSN:0275-2565    

DOI:10.1002/ajp.1350090109

出版商:Wiley Subscription Services, Inc., A Wiley Company    

年代:1985

数据来源: WILEY

ISSN:0275-2565    

DOI:10.1002/ajp.1350090101

出版商:Wiley Subscription Services, Inc., A Wiley Company    

年代:1985

数据来源: WILEY