Results 141 to 150 of about 492 (165)
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Y-autosome translocation in the howler monkey, Alouatta palliata.
Journal of medical primatology, 1976Two modal diploid chromosome numbers were encountered in a population sample of howler monkeys, Alouatta palliata. The modal diploid number of males was 53, females: 54. Karyotypes prepared by G-band and C-band techniques identified a Y-auto-some translocation in the males.
T C, Jones +3 more
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Vocalizations of howler monkeys (Alouatta palliata) in southwestern Panama.
Folia primatologica; international journal of primatology, 1976This report presents an analysis of the vocal repertoire of howler monkeys (Alouatta palliata) observed during a field study in southwestern Panama. 26 types of vocalizations were identified and described, and sonagrams are presented for 21 of them. The vocal repertoire contained many nondiscrete calls that graded continuously into each other, and all ...
J D, Baldwin, J I, Baldwin
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Behaviour, 1989
Mantled howling monkeys, Alouatta palliata palliata, of Guanacaste, Costa Rica, respond in a site-dependent way to experimental playbacks of choruses of loud vocalizations. Groups of howling monkeys increase their rates of calling and approach simulated vocal intruders located in often-used patches of forest. In contrast, they call less than previously
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Mantled howling monkeys, Alouatta palliata palliata, of Guanacaste, Costa Rica, respond in a site-dependent way to experimental playbacks of choruses of loud vocalizations. Groups of howling monkeys increase their rates of calling and approach simulated vocal intruders located in often-used patches of forest. In contrast, they call less than previously
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Foraging Strategy Changes in an Alouatta palliata mexicana Troop Released on an Island
2003The distribution of primates has been diminishing during the last decades because of fragmentation and disappearance of habitat (Estrada and Coates-Estrada, 1994). As a consequence, the geographic distribution is no longer continuous and is comprised of areas relatively inaccessible to people.
Ernesto Rodríguez-Luna +3 more
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The vocal organ of the Howling monkey (Alouatta palliata)
Journal of Morphology, 1960G, KELEMEN, J, SADE
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Greeting Behaviors in Male Alouatta palliata at La Pacifica, Costa Rica
International Journal of Primatology, 2019Greeting behaviors are ritualized, nonaggressive interactions that serve as a form of tactile communication between two individuals; however, our understanding of the function of male greetings and how they vary inter- and intraspecifically is limited, particularly in Neotropical species.
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Urine-rubbing behavior in the mantled howler monkey Alouatta palliata.
Folia primatologica; international journal of primatology, 1975Mantled howler monkeys (Alouatta palliata) of both sexes and all age classes were observed rubbing urine on the soles of the feet and/or palms of the hands as well as the ventral surface of the tail and, occasionally, the throat. Instances of urine-rubbing were often associated with periods of troop movement or times of social stress.
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