Topic
Primate
About: Primate is a research topic. Over the lifetime, 1250 publications have been published within this topic receiving 67388 citations. The topic is also known as: the primate order & primates.
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TL;DR: In the colobus monkeys the basal metabolic rate (BMR) was considerably lower than in the Sykes monkeys: 85% vs 113% of the value predicted from body mass.
54 citations
TL;DR: The seroprevalence of antibodies against human T-cell leukemia virus type 1 (HTLV-1), human immunodeficiency virus (HIV), and simian immunodelic virus (SIV; formerly STLV-III) was uniformly low or absent in both SAIDS-free andSAIDS-affected groups of rhesus monkeys, demonstrating that these retroviruses are not etiologically linked to SAIDS.
Abstract: A 2.5-year epidemiologic study of a breeding group of rhesus monkeys (Macaca mulatta), which is a focus of endemic simian acquired immunodeficiency syndrome (SAIDS), demonstrated a strong association between the occurrence of SAIDS and infection with a type D retrovirus, SAIDS retrovirus serotype 1 (SRV-1). Of 23 healthy "tracer" juvenile rhesus monkeys, 19 (83%) died with SAIDS within 9 months of introduction into the resident SAIDS-endemic population. In contrast, 21 healthy "sentinel" juvenile rhesus monkeys placed in the same outdoor enclosure but denied physical contact with the SAIDS-affected group by a 10-foot-wide "buffer zone" remained free of SRV-1, SRV-1 antibody, and disease for 2.5 years. The SAIDS-specific mortality rate was significantly higher in juveniles than in adults. In repeated serologic testing, the overall prevalence of SRV-1 antibody ranged from 68 to 85%. Antibody prevalence increased with age. Seroconversion was found to be a poor indicator of infection rate, as approximately 50% of virus-positive juvenile monkeys had no antibody detectable by enzyme-linked immunosorbent assay. Repeated viral isolations from all animals revealed 1) SRV-1 viremia with clinical SAIDS; 2) persistent viremia and viral shedding in apparently healthy animals; 3) transient viremia and clinical recovery; 4) intermittent viremia, suggesting activation of latent infections; and 5) viremia in a 1-day-old infant, suggesting transplacental transmission. The prevalence of SRV-1 antibody in SAIDS-free breeding groups of rhesus monkeys was 4%. The seroprevalence of antibodies against human T-cell leukemia virus type 1 (HTLV-1), human immunodeficiency virus (HIV), and simian immunodeficiency virus (SIV; formerly STLV-III) was uniformly low or absent in both SAIDS-free and SAIDS-affected groups of rhesus monkeys, demonstrating that these retroviruses are not etiologically linked to SAIDS at the California Primate Research Center.
54 citations
TL;DR: Behavioural and neurophysiological data suggest that neuronal activity specific to novel stimuli and to faces is not a consequence of oculomotor responses to these stimuli and that monkeys are motivated to view visual arrays.
54 citations
TL;DR: Differences were statistically significant for adult females and descriptively suggestive for adult males, and both suggest body and appendage adaptation to a warmer, wetter climate.
Abstract: Chinese-origin and Indian-derived rhesus monkeys (Macaca mulatta), ranging in age from 6 months to 15 years, were weighed and measured during the 1995 inventory of the SAIDS breeding colony at the Tulane Regional Primate Research Center. Data were analyzed separately for males (n=279) and females (n=554), and an analysis of variance was done for five measurements and two indices, with age and country of origin as independent variables. All measurements increased significantly with age, but Chinese-origin males were heavier, longer, and taller than Indian-derived males. Chinese-origin juvenile females were heavier and longer than Indian-derived juvenile females, but this pattern was reversed for adults. Chinese-origin rhesus monkeys exhibited more adult sexual dimorphism than did Indian-derived rhesus monkeys. An analysis of Chinese-origin adults that were Louisiana-born vs. China-born indicated that Louisiana-born adults were lighter, longer, and taller than their China-born parental generation. These differences were statistically significant for adult females and descriptively suggestive for adult males, and both suggest body and appendage adaptation to a warmer, wetter climate.
54 citations
TL;DR: Red uakari (Cacajao calvus ucayalii) living near the Communal Reserve Tamshiyacu-Tahuayo in northeastern Peru frequently associate with other species of primate, especially the woolly monkey (Lagothrix lagotricha).
Abstract: Red uakari (Cacajao calvus ucayalii) living near the Communal Reserve Tamshiyacu-Tahuayo in northeastern Peru frequently associate with other species of primate, especially the woolly monkey (Lagothrix lagotricha). In 42 observation follows over 14 months (April 1993 – December 1994), the uakari were in association with other species for all or some portion of time during 62% of the follows. Woolly monkeys were present during 65% of the polyspecific groupings. During 151.5 hr of timed observations, the uakari spent 29.21% of their time with other species, and 76% of their associative time with woolly monkeys. The participants of the associations may benefit from increased predator protection and more efficient use of resource. These data represent the first published notes from a long-term behavioral ecology study of red uakari.
53 citations