Results 151 to 160 of about 3,903 (190)
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The Basal Metabolism of Mantled Howler Monkeys (Alouatta palliata)
Journal of Mammalogy, 1979Rates of mass specific oxygen consumption of two resting, postabsorptive howler monkeys at air temperatures of 24 to 26°C were 0.401 ml g−1h−1 (♂, 6.11 kg) and 0.480 ml g−1h−1 (♀, 3.23 kg). These data are about 5% in excess of the values predicted by Kleiber for mammals of similar body mass.
K. Milton, T. M. Casey, K. K. Casey
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Predicted and verified distributions of Ateles geoffroyi and Alouatta palliata in Oaxaca, Mexico
Primates, 2008Primate conservation requires a better knowledge of the distributions and statuses of populations in both large areas of habitat and in areas for which we currently have no information. We focused on spider monkeys (Ateles geoffroyi) and howler monkeys (Alouatta palliata) in the state of Oaxaca, Mexico.
Teresita, Ortiz-Martínez +2 more
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Postural and Locomotor Behavior of Alouatta palliata on Various Substrates
Folia Primatologica, 1976A study of the postures and locomotor modes of Alouatta palliata was conducted from mid-June to mid-September 1974 on Barro Colorado Island, Panama Canal Zone. Activities, postures, and locomotor modes were recorded relative to the position of the animals in the trees and to the size and angulatiry of the support structures.
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Interactions between Adult Female and Infant Howling Monkeys (Alouatta palliata)
Folia Primatologica, 1973Eight troops containing a total of 151 howler monkeys were studied for 513 h between December 19, 1970, and February 25, 1971. The troops contained 26 mothers with their infants. Mother-infant and other adult female-infant interactions were analyzed for infants from all three age classes.
J D, Baldwin, J I, Baldwin
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Rates of fermentative digestion in the howler monkey, Alouatta palliata (primates: Ceboidea)
Comparative Biochemistry and Physiology Part A: Physiology, 19831. Caecal material of wild howler monkeys was analyzed by gas chromatography for evidence of fermentation activity and rates of production and absorption of volatile fatty acids. 2. Results showed a high rate of production of acetic acid and lesser production of propionic, butyric and isobutyric acids.
K, Milton, R H, McBee
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Dental topography and molar wear in Alouatta palliata from Costa Rica
American Journal of Physical Anthropology, 2004AbstractPaleoprimatologists depend on relationships between form and function of teeth to reconstruct the diets of fossil species. Most of this work has been limited to studies of unworn teeth. A new approach, dental topographic analysis, allows the characterization and comparison of worn primate teeth.
Dennis, John C +3 more
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Visual detection and fruit selection by the mantled howler monkey (Alouatta palliata)
American Journal of Primatology, 2020AbstractHowler monkeys (platyrrhini) have evolved routine trichromatic color vision independently from catarrhines, which presents an opportunity to test hypotheses concerning the adaptive value of distinguishing reddish from greenish hues. A longstanding hypothesis posits that trichromacy aids in the efficient detection of reddish‐ripe fruits, which ...
Karem G. Sánchez‐Solano +4 more
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Grooming in the mantled howler monkey,Alouatta palliata Gray
Primates, 1979Dominant individuals groom subordinates in the mantled howler monkey. This relationship is previously unreported for the species and is a characteristic that howler monkeys share with many birds and mammals.
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Animal Behaviour, 1987
Abstract The hypothesis that acoustic communication mediates spacing between groups of mantled howling monkeys, Alouatta palliata palliata, was tested experimentally in a Costa Rican forest. Previous work showed that reverberation increases with the distance sound propagates within the forest and thus could provide distance cues to monkeys.
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Abstract The hypothesis that acoustic communication mediates spacing between groups of mantled howling monkeys, Alouatta palliata palliata, was tested experimentally in a Costa Rican forest. Previous work showed that reverberation increases with the distance sound propagates within the forest and thus could provide distance cues to monkeys.
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Life history and locomotion in Cebus capucinus and Alouatta palliata
American Journal of Physical Anthropology, 2009AbstractAs 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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