Results 191 to 200 of about 3,649 (208)
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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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1993
Ateles geoffroyi Kuhl, 1820. Beitr. Zool. Vergi. Anat., 1:26. TYPE LOCALITY: Nicaragua, San Juan del Norte. DISTRIBUTION: S Mexico to Panama. STATUS: CITES - Appendix I and U.S. ESA - Endangered as A. g. frontatus and A. g. panamensis only, otherwise Appendix II; IUCN - Vulnerable.
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Ateles geoffroyi Kuhl, 1820. Beitr. Zool. Vergi. Anat., 1:26. TYPE LOCALITY: Nicaragua, San Juan del Norte. DISTRIBUTION: S Mexico to Panama. STATUS: CITES - Appendix I and U.S. ESA - Endangered as A. g. frontatus and A. g. panamensis only, otherwise Appendix II; IUCN - Vulnerable.
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Olfactory Sensitivity for Aliphatic Esters in Spider Monkeys (Ateles geoffroyi).
Behavioral Neuroscience, 2003Using a conditioning paradigm, the authors investigated the olfactory sensitivity of 3 spider monkeys (Ateles geoffroyi) for a homologous series of aliphatic esters (ethyl acetate to n-octyl acetate) and isomeric forms of some of these substances. With all odorants, the monkeys significantly discriminated concentrations below 1 ppm from the odorless ...
Laura Teresa Hernandez Salazar +2 more
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Captive spider monkeys (Ateles geoffroyi) arm-raise to solicit allo-grooming
Behavioural Processes, 2012Old World monkeys solicit allo-grooming from conspecifics. However, there are relatively few studies of allo-grooming among spider monkeys, and descriptions of allo-grooming solicitation among spider monkeys are anecdotal. In this study, eighty-one hours of video, shot over eight weeks, captured 271 allo-grooming bouts among small groups of captive ...
Matthew H, Scheel, Dori, Edwards
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Positional behavior in Saimiri boliviensis and Ateles geoffroyi
American Journal of Physical Anthropology, 1990AbstractPositional behavior, associated context, and substrate use in Ateles geoffroyi and Saimiri boliviensis were quantified using instantaneous focal animal sampling and a hierarchically organized nomenclature to describe posture and locomotion. This paper then examines behavioral predictions derived from pseudo‐behavioral locomotor classifications,
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Female-Directed Aggression in Free-Ranging Ateles geoffroyi
International Journal of Primatology, 2003In a study of the reproductive biology and behavior of black-handed spider monkeys (Ateles geoffroyi) on Barro Colorado Island, Panama, 107 instances of female directed male aggression (male attacks) occurred during >1,000 h of observation. Two hypotheses might explain this behavior.
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Aging‐related reproductive decline in the male spider monkey (Ateles geoffroyi)
Journal of Medical Primatology, 2012AbstractBackground It is unknown whether male black‐handed spider monkeys (Ateles geoffroyi) undergo a reproductive decline as they age. The purpose of this work was investigating whether serum testosterone and semen quality decrease with age in these primates as occur in other species.Methods In this study, we assessed age variations in the ...
Leonor, Hernández-López +4 more
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Lethal intragroup aggression by adult male spider monkeys (Ateles geoffroyi)
American Journal of Primatology, 2006AbstractI report three cases of coalitionary aggression by adult male black‐handed spider monkeys (Ateles geoffroyi) against subadult males within their community on Barro Colorado Island (BCI), Panama. Two of these cases were followed by the disappearance and presumed death of the victim. Similar behavior was recently reported by Valero et al.
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Copulation in free‐ranging black‐handed spider monkeys (Ateles geoffroyi)
American Journal of Primatology, 2006AbstractI report ad libitum data on 18 copulations involving free‐ranging black‐handed spider monkeys (Ateles geoffroyi) on Barro Colorado Island, Panama. All copulations were performed in a dorsoventral position, as is typically reported for this genus.
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