Browsing by Subject "Alouatta"
Now showing items 1-19 of 19
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A coprological survey of parasites of wild mantled howling monkeys, Alouatta palliata palliata.
(J Wildl Dis, 1990-10)Fecal samples from 155 mantled howling monkeys (Alouatta palliata palliata) examined at Centro Ecologico La Pacifica, Guanacaste Province, Costa Rica, revealed 75 (48%) had parasitic infections. A sampling of nine howling ... -
An assessment of skin temperature gradients in a tropical primate using infrared thermography and subcutaneous implants.
(J Therm Biol, 2017-01)Infrared thermography has become a useful tool to assess surface temperatures of animals for thermoregulatory research. However, surface temperatures are an endpoint along the body's core-shell temperature gradient. Skin ... -
Body temperature and thermal environment in a generalized arboreal anthropoid, wild mantled howling monkeys (Alouatta palliata).
(Am J Phys Anthropol, 2014-05)Free-ranging primates are confronted with the challenge of maintaining an optimal range of body temperatures within a thermally dynamic environment that changes daily, seasonally, and annually. While many laboratory studies ... -
Dental microwear in live, wild-trapped Alouatta palliata from Costa Rica.
(Am J Phys Anthropol, 1991-07)One problem with dental microwear analyses of museum material is that investigators can never be sure of the diets of the animals in question. An obvious solution to this problem is to work with live animals. Recent work ... -
Dental topography and molar wear in Alouatta palliata from Costa Rica.
(Am J Phys Anthropol, 2004-10)Paleoprimatologists 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 ... -
Drinking from arboreal water sources by mantled howling monkeys (Alouatta palliata Gray).
(Folia Primatol (Basel), 1978)Despite occasional trips to the ground and feeding in trees whose canopies touched the river, mantled howling monkeys were never seen to drink from any ground water. Drinking from arboreal cisterns was observed, but only ... -
Dust accumulation in the canopy: a potential cause of dental microwear in primates.
(Am J Phys Anthropol, 1995-06)Dental microwear researchers consider exogenous grit or dust to be an important cause of microscopic wear on primate teeth. No study to date has examined the accumulation of such abrasives on foods eaten by primates in the ... -
Dust in the wind: How climate variables and volcanic dust affect rates of tooth wear in Central American howling monkeys.
(Am J Phys Anthropol, 2016-02)OBJECTIVES: Two factors have been considered important contributors to tooth wear: dietary abrasives in plant foods themselves and mineral particles adhering to ingested food. Each factor limits the functional life of teeth. ... -
Field methods for capture and measurement of three monkey species in Costa Rica.
(Folia Primatol (Basel), 1991)A total of 54 free-ranging monkeys were captured and marked in Santa Rosa National Park, Costa Rica, during May 1985, and an additional 17 were captured during March 1986. The animals were darted using a blowpipe or a CO2 ... -
Getting Humans Off Monkeys' Backs: Using Primate Acclimation as a Guide for Habitat Management Efforts.
(Integrative and comparative biology, 2020-05-29)Wild primates face grave conservation challenges, with habitat loss and climate change projected to cause mass extinctions in the coming decades. As large-bodied Neotropical primates, mantled howling monkeys (Alouatta palliata) ... -
Mechanical defenses in leaves eaten by Costa Rican howling monkeys (Alouatta palliata).
(Am J Phys Anthropol, 2006-01)Primate species often eat foods of different physical properties. This may have implications for tooth structure and wear in those species. The purpose of this study was to examine the mechanical defenses of leaves eaten ... -
Mechanical defenses in leaves eaten by Costa Rican howling monkeys (Alouatta palliata).
(Am J Phys AnthropolAm J Phys AnthropolAm J Phys Anthropol, 2006-01)Primate species often eat foods of different physical properties. This may have implications for tooth structure and wear in those species. The purpose of this study was to examine the mechanical defenses of leaves eaten ... -
Natal emigration by both sexes in the La Pacifica population of mantled howlers: when do some stay?
(Am J Primatol, 2008-02)We have reported previously that all male and female mantled howlers emigrate from natal groups at Hacienda La Pacifica, Costa Rica. In the years since that report, a small number of juveniles have stayed in the natal group ... -
Plasma lipoproteins of free-ranging howling monkeys (Alouatta palliata).
(Comp Biochem Physiol B, 1987)1. Plasma lipids and lipoproteins of free-ranging howling monkeys from Costa Rica (Alouatta palliata), aged 5 months to 23 years, were characterized. 2. High density lipoproteins were lipid-rich, similar to HDL2 of human ... -
Reproduction and population growth in free-ranging mantled howling monkeys.
(Am J Phys Anthropol, 1980-07)Free-ranging mantled howling monkey (Alouatta palliata Gray) females experienced a regular estrus cycle averaging 16.3 days, demonstrated sexual skin changes, and participated in multiple matings before becoming pregnant. ... -
Secondary transfer of adult mantled howlers (Alouatta palliata) on Hacienda La Pacifica, Costa Rica: 1975-2009.
(Primates, 2010-07)Natal emigration by male and female mantled howlers (Alouatta palliata), and subsequent immigration into breeding groups, is well documented for the free-ranging population on Hacienda La Pacifica, Costa Rica, but secondary ... -
Testing parallel laser image scaling for remotely measuring body dimensions on mantled howling monkeys (Alouatta palliata).
(Am J Primatol, 2015-08)Body size is a fundamental variable for many studies in primate biology. However, obtaining body dimensions of wild primates through live capture is difficult and costly, so developing an alternative inexpensive and non-invasive ... -
Thyroid hormone fluctuations indicate a thermoregulatory function in both a tropical (Alouatta palliata) and seasonally cold-habitat (Macaca fuscata) primate.
(Am J Primatol, 2017-11)Thyroid hormones boost animals' basal metabolic rate and represent an important thermoregulatory pathway for mammals that face cold temperatures. Whereas the cold thermal pressures experienced by primates in seasonal habitats ... -
When top-down becomes bottom up: behaviour of hyperdense howler monkeys (Alouatta seniculus) trapped on a 0.6 ha island.
(PLoS One, 2014)Predators are a ubiquitous presence in most natural environments. Opportunities to contrast the behaviour of a species in the presence and absence of predators are thus rare. Here we report on the behaviour of howler monkey ...
