Results 191 to 200 of about 3,275 (202)

Life history and locomotion in Cebus capucinus and Alouatta palliata

American Journal of Physical Anthropology, 2009
AbstractAs an individual matures from birth to adulthood, many factors may influence the positional repertoire. The biological and behavioral changes that accompany a growing individual are expected to influence foraging strategy, social status and interaction, diet, predator avoidance strategies, and ultimately positional behavior as a behavioral link
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Energy Metabolism and Food Consumption by Wild Howler Monkeys (Alouatta Palliata)

Ecology, 1979
Rates of CO2 production in free—living and captive howler monkeys were measured using doubly labeled water, and assimilation of energy from natural foods was determined. Results permit construction of a field energy budget, and estimation of the feeding rate of these arboreal, plant—eating primates.
Kenneth A. Nagy, Katharine Milton
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Y-autosome translocation in the howler monkey, Alouatta palliata.

Journal of medical primatology, 1976
Two 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, R W, Thorington, A, Miller, L, Morgan   +3 more
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Vocalizations of howler monkeys (Alouatta palliata) in southwestern Panama.

Folia primatologica; international journal of primatology, 1976
This 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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Locomotor and postural behavior in Alouatta palliata and Cebus capucinus

American Journal of Primatology, 1992
AbstractPositional behavior of two platyrrhine monkeys, Alouatta palliata and Cebus capucinus, was observed at La Pacifica and Santa Rosa National Park, Costa Rica. Frequency data for locomotion, postures, support diameters, orientation of supports, and use of canopy were recorded on focal males and females.
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Greeting Behaviors in Male Alouatta palliata at La Pacifica, Costa Rica

International Journal of Primatology, 2019
Greeting 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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The vocal organ of the Howling monkey (Alouatta palliata)

Journal of Morphology, 1960
G, KELEMEN, J, SADE
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Chemical factors influencing food choice of howler monkey (Alouatta palliata)

2020
Previous research suggests that howlers discriminately feed on plants which are not necessarily the most abundant species. Plant samples collected in Guanacasta Province, Costa Rica, were analyzed for concentrations of total phenolics, condensed tannins, gallotannins, total protein, fiber and lignin and also for their in vitro digestibility by pepsin ...
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Urine-rubbing behavior in the mantled howler monkey Alouatta palliata.

Folia primatologica; international journal of primatology, 1975
Mantled 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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Parassitofauna of Alouatta Palliata: between host conservation and zoonotic risk

The mantled howler monkey, Alouatta palliata, is an important species within Neotropical region known for their striking mantle-like fur, which distinguishes them, and their territorial calls that echo through the tropical forests they inhabit. This thesis investigates some general features and the diversity, prevalence, and impact of parasites ...
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