Results 121 to 130 of about 492 (165)
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Variations in the mechanical properties of Alouatta palliata molar enamel
American Journal of Physical Anthropology, 2009AbstractTeeth have provided insights into many topics including primate diet, paleobiology, and evolution, due to the fact that they are largely composed of inorganic materials and may remain intact long after an animal is deceased. Previous studies have reported that the mechanical properties, chemistry, and microstructure of human enamel vary with ...
Laura A, Darnell +3 more
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Correlates of hormonal modulation in mantled howler monkey males,Alouatta palliata
American Journal of Biological Anthropology, 2021AbstractObjectivesThe study of hormone modulation may offer important insight into the responses of individuals to environmental challenges. Here we studied C‐peptide, thyroid hormone (T3), glucocorticoid (GC), and testosterone (T) metabolites of mantled howler males to assess: 1) correlations among hormones; 2) individual and temporal variation in ...
Pedro Américo D. Dias +4 more
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Foraging Habits of Alouatta palliata mexicana in Three Forest Fragments
Folia Primatologica, 2007The activity patterns and diet of howler monkeys(Alouatta palliata mexicana)were studied in 3 forest fragments in south-eastern Mexico: Playa Escondida (PLA), Agaltepec Island (AGA) and Arroyo Liza (LIZ). Intersite differences offered the opportunity to investigate the foraging adaptations of howler monkeys in response to population and habitat size ...
Asensio, N +4 more
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Non-visual senses in fruit selection by the mantled howler monkey (Alouatta palliata)
Primates, 2022There is extensive knowledge about the visual system and the implications of the evolution of trichromatic color vision in howler monkeys (genus Alouatta) related to food selection; however, information about the other sensory systems is limited. In this study we assessed the use of touch, sniffing, and taste in fruit evaluation by 20 adult mantled ...
Karem G. Sánchez-Solano +5 more
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Reproductive Energetics of Female Mantled Howlers (Alouatta palliata)
International Journal of Primatology, 2017The energetic costs of reproduction have an important influence on the life histories of female primates. At present, however, the interplay of female reproductive state, food availability, and strategies aimed at maintaining energy balance has been described for only a few species, limiting our ability to understand intra- and interspecific variation ...
Beatriz Cano-Huertes +5 more
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Primates, 2007
We compared the distributions of Alouatta palliata and A. pigra in southeastern Mexico and Central America with geographic and ecological features to infer current barriers and ecological preferences. Distribution data were obtained from museum specimen localities, study sites, historic records and field surveys and integrated into digital elevation ...
G Bruce Williamson
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We compared the distributions of Alouatta palliata and A. pigra in southeastern Mexico and Central America with geographic and ecological features to infer current barriers and ecological preferences. Distribution data were obtained from museum specimen localities, study sites, historic records and field surveys and integrated into digital elevation ...
G Bruce Williamson
exaly +3 more sources
Folia Primatologica, 2022
Abstract Increasing levels of anthropogenic modification, degradation, and fragmentation of arboreal mammal habitats substantially influence wildlife movement and behavior. In Costa Rica, there has been a surge in infrastructure development in the past decade.
Inés Azofeifa Rojas, Tremaine Gregory
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Abstract Increasing levels of anthropogenic modification, degradation, and fragmentation of arboreal mammal habitats substantially influence wildlife movement and behavior. In Costa Rica, there has been a surge in infrastructure development in the past decade.
Inés Azofeifa Rojas, Tremaine Gregory
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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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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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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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