Results 151 to 160 of about 3,292 (196)
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Association networks in spider monkeys (Ateles geoffroyi)
Behavioral Ecology and Sociobiology, 2009We use two novel techniques to analyze association patterns in a group of wild spider monkeys (Ateles geoffroyi) studied continuously for 8 years. Permutation tests identified association rates higher or lower than chance expectation, indicating active processes of companionship and avoidance as opposed to passive aggregation.
Gabriel Ramos-Fernández +3 more
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Ateles geoffroyi subsp. grisescens Gray 1866
2005Ateles geoffroyi subsp. grisescens Gray 1866 Synonyms: Ateles geoffroyi subsp. cucullatus Gray 1866.
Wilson, Don E., Reeder, DeeAnn
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Artificial insemination in black-handed spider monkey (Ateles geoffroyi)
Theriogenology, 2007Artificial insemination (AI) was performed in spider monkeys; these primates are vulnerable to extinction and usually do not reproduce spontaneously in captivity. Uterine cycles were followed by daily assessment of vaginal cytology, and corroborated a posteriori by concentrations of 17-beta estradiol and progesterone, measured by radioimmunoassay (RIA),
L, Hernández-López +4 more
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The menstrual cycle of the spider monkey (Ateles geoffroyi)
American Journal of Primatology, 1998The ovarian cycles of four adult female spider monkeys (Ateles geoffroyi) were followed daily throughout 30 days by means of vaginal swabs and blood samplings. Cytological analyses of the vaginal swabs and radioimmunoassay determination of the daily levels of estradiol-17 beta (E2) and progesterone (P4) wer done in order to classify the kind of ovarian
L, Hernández-López +4 more
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Cranial growth and growth dimorphism in Ateles geoffroyi
American Journal of Physical Anthropology, 1993AbstractWith the exception of the work of Schultz (1960), cranial growth in Ateles is not well documented. This paper describes the results of a detailed quantitative study of cranial ontogeny in male and female Ateles geoffroyi. Using Euclidean Distance Matrix Analysis (EDMA), local areas of form change due to growth within spider monkey crania are ...
B D, Corner, J T, Richtsmeier
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Locomotion and Posture in Ateles geoffroyi and Ateles paniscus
Folia Primatologica, 1978The locomotor and postural behavior of Ateles geoffroyi and Ateles paniscus was studied in Panama and Surinam. Ateles locomotion can be divided into five patterns on the basis of limb usage: quadrupedal walking and running, suspensory locomotion, climbing, bipedalism and leaping.
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Ateles geoffroyi (Black-handed spider-monkey)
1968The autosomal pair placed in No. 11 position has a characteristic secondary constriction near its centromere.
T. C. Hsu, Kurt Benirschke
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Ateles geoffroyi subsp. vellerosus Gray 1866
2005Ateles geoffroyi subsp. vellerosus Gray 1866 Synonyms: Ateles geoffroyi subsp. neglectus Reinhardt 1873; Ateles geoffroyi subsp. tricolor Hollister 1914.
Wilson, Don E., Reeder, DeeAnn
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Ateles geoffroyi subsp. ornatus Gray 1870
2005Ateles geoffroyi subsp. ornatus Gray 1870 Synonyms: Ateles geoffroyi subsp. azuerensis Bole 1937; Ateles geoffroyi subsp. panamensis Kellogg and Golman 1944.
Wilson, Don E., Reeder, DeeAnn
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Factors in forgetting in spider monkeys, Ateles geoffroyi.
Journal of Comparative Psychology, 2021This essay discusses current problems and factors with memory testing in spider monkeys. (PsycInfo Database Record (c) 2021 APA, all rights reserved).
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