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Kenneth Earl Glander

Professor Emeritus of Evolutionary Anthropology
Evolutionary Anthropology
Duke Box 90383, Durham, NC 27708
130 Science Dr., 108 Bio Sci Bldg, Durham, NC 27708

Selected Publications


Sexual dimorphism and growth in Alouatta palliata based on 20+ years of field data.

Journal Article American journal of physical anthropology · August 2020 ObjectivesAlouatta palliata patterns of growth and sexual dimorphism are evaluated using 20 plus years of field data. Comparisons are made to other species of Alouatta and other New World primates.Materials and methodsRecords of 92 A. pal ... Full text Open Access Cite

Getting Humans Off Monkeys' Backs: Using Primate Acclimation as a Guide for Habitat Management Efforts.

Journal Article Integrative and comparative biology · August 2020 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) are predicted to fare poorly ... Full text Open Access Cite

Morphometric signals of population decline in diademed sifakas occupying degraded rainforest habitat in Madagascar.

Journal Article Scientific reports · June 2019 Anthropogenic habitat change can have varied impacts on primates, including both negative and positive outcomes. Even when behavioural shifts are seen, they may reflect decreased health, or simply behavioural flexibility; understanding this distinction is ... Full text Open Access Cite

Audiograms of howling monkeys: are extreme loud calls the result of runaway selection?

Journal Article · February 5, 2019 Abstract The eponymous vocalizations of howling monkeys (genus Alouatta ) are associated with territorial defense and male-male competition, yet the extreme loudness of howls, which are among the loudest vocalizations of any terrestrial mammal, have yet to ... Full text Open Access Cite

Darting Primates: Steps Toward Procedural and Reporting Standards

Journal Article International Journal of Primatology · December 1, 2018 Darting, a common method of capturing wild primates, poses risks to the individuals that must be appropriately minimized. A recent article in the International Journal of Primatology by Cunningham et al. (International Journal of Primatology, 36(5), 894–91 ... Full text Open Access Cite

Associations Between Nutrition, Gut Microbiome, and Health in A Novel Nonhuman Primate Model.

Journal Article Scientific reports · July 2018 Red-shanked doucs (Pygathrix nemaeus) are endangered, foregut-fermenting colobine primates which are difficult to maintain in captivity. There are critical gaps in our understanding of their natural lifestyle, including dietary habits such as consumption o ... Full text Open Access Cite

The gut microbiome of nonhuman primates: Lessons in ecology and evolution.

Journal Article American journal of primatology · June 2018 The mammalian gastrointestinal (GI) tract is home to trillions of bacteria that play a substantial role in host metabolism and immunity. While progress has been made in understanding the role that microbial communities play in human health and disease, muc ... Full text Open Access Cite

Dental Topography and Food Processing in Wild-Caught Costa Rican Alouatta

Conference AMERICAN JOURNAL OF PHYSICAL ANTHROPOLOGY · April 1, 2018 Link to item Cite

Thyroid hormone fluctuations indicate a thermoregulatory function in both a tropical (Alouatta palliata) and seasonally cold-habitat (Macaca fuscata) primate.

Journal Article American journal of primatology · November 2017 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 at high latitudes and elevatio ... Full text Open Access Cite

Cancellous bone density in age-sorted atelines

Conference AMERICAN JOURNAL OF PHYSICAL ANTHROPOLOGY · April 1, 2017 Link to item Cite

An assessment of skin temperature gradients in a tropical primate using infrared thermography and subcutaneous implants.

Journal Article Journal of thermal biology · January 2017 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 and fur are the peripheral tissues ... Full text Open Access Cite

Measuring Microhabitat Temperature in Arboreal Primates: A Comparison of On-Animal and Stationary Approaches

Journal Article International Journal of Primatology · October 1, 2016 Arboreal primates actively navigate a complex thermal environment that exhibits spatial, daily, and seasonal temperature changes. Thus, temperature measurements from stationary recording devices in or near a forest likely do not reflect the thermal microen ... Full text Open Access Cite

Captivity humanizes the primate microbiome.

Journal Article Proceedings of the National Academy of Sciences of the United States of America · September 2016 The primate gastrointestinal tract is home to trillions of bacteria, whose composition is associated with numerous metabolic, autoimmune, and infectious human diseases. Although there is increasing evidence that modern and Westernized societies are associa ... Full text Open Access Cite

A comparison of activity patterns for captive Propithecus tattersalli and Propithecus coquereli.

Journal Article Zoo biology · March 2016 The activity patterns and social interactions of two species of captive sifaka were observed during a 2-year period. Allogrooming was not observed in golden-crowned sifaka and they spent significantly more time resting than the Coquerel's sifaka. Females o ... Full text Open Access Cite

Dust in the wind: How climate variables and volcanic dust affect rates of tooth wear in Central American howling monkeys.

Journal Article American journal of physical anthropology · February 2016 ObjectivesTwo 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. Cross-population studies ... Full text Open Access Cite

On the ground looking up

Chapter · January 8, 2016 Open Access Cite

Testing parallel laser image scaling for remotely measuring body dimensions on mantled howling monkeys (Alouatta palliata).

Journal Article American journal of primatology · August 2015 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 method is crucial. Parallel ... Full text Open Access Cite

Sexual dimorphism and growth in Alouatta palliata based on 20+ years of field data.

Journal Article American journal of physical anthropology · August 2020 ObjectivesAlouatta palliata patterns of growth and sexual dimorphism are evaluated using 20 plus years of field data. Comparisons are made to other species of Alouatta and other New World primates.Materials and methodsRecords of 92 A. pal ... Full text Open Access Cite

Getting Humans Off Monkeys' Backs: Using Primate Acclimation as a Guide for Habitat Management Efforts.

Journal Article Integrative and comparative biology · August 2020 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) are predicted to fare poorly ... Full text Open Access Cite

Morphometric signals of population decline in diademed sifakas occupying degraded rainforest habitat in Madagascar.

Journal Article Scientific reports · June 2019 Anthropogenic habitat change can have varied impacts on primates, including both negative and positive outcomes. Even when behavioural shifts are seen, they may reflect decreased health, or simply behavioural flexibility; understanding this distinction is ... Full text Open Access Cite

Audiograms of howling monkeys: are extreme loud calls the result of runaway selection?

Journal Article · February 5, 2019 Abstract The eponymous vocalizations of howling monkeys (genus Alouatta ) are associated with territorial defense and male-male competition, yet the extreme loudness of howls, which are among the loudest vocalizations of any terrestrial mammal, have yet to ... Full text Open Access Cite

Darting Primates: Steps Toward Procedural and Reporting Standards

Journal Article International Journal of Primatology · December 1, 2018 Darting, a common method of capturing wild primates, poses risks to the individuals that must be appropriately minimized. A recent article in the International Journal of Primatology by Cunningham et al. (International Journal of Primatology, 36(5), 894–91 ... Full text Open Access Cite

Associations Between Nutrition, Gut Microbiome, and Health in A Novel Nonhuman Primate Model.

Journal Article Scientific reports · July 2018 Red-shanked doucs (Pygathrix nemaeus) are endangered, foregut-fermenting colobine primates which are difficult to maintain in captivity. There are critical gaps in our understanding of their natural lifestyle, including dietary habits such as consumption o ... Full text Open Access Cite

The gut microbiome of nonhuman primates: Lessons in ecology and evolution.

Journal Article American journal of primatology · June 2018 The mammalian gastrointestinal (GI) tract is home to trillions of bacteria that play a substantial role in host metabolism and immunity. While progress has been made in understanding the role that microbial communities play in human health and disease, muc ... Full text Open Access Cite

Dental Topography and Food Processing in Wild-Caught Costa Rican Alouatta

Conference AMERICAN JOURNAL OF PHYSICAL ANTHROPOLOGY · April 1, 2018 Link to item Cite

Thyroid hormone fluctuations indicate a thermoregulatory function in both a tropical (Alouatta palliata) and seasonally cold-habitat (Macaca fuscata) primate.

Journal Article American journal of primatology · November 2017 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 at high latitudes and elevatio ... Full text Open Access Cite

Cancellous bone density in age-sorted atelines

Conference AMERICAN JOURNAL OF PHYSICAL ANTHROPOLOGY · April 1, 2017 Link to item Cite

An assessment of skin temperature gradients in a tropical primate using infrared thermography and subcutaneous implants.

Journal Article Journal of thermal biology · January 2017 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 and fur are the peripheral tissues ... Full text Open Access Cite

Measuring Microhabitat Temperature in Arboreal Primates: A Comparison of On-Animal and Stationary Approaches

Journal Article International Journal of Primatology · October 1, 2016 Arboreal primates actively navigate a complex thermal environment that exhibits spatial, daily, and seasonal temperature changes. Thus, temperature measurements from stationary recording devices in or near a forest likely do not reflect the thermal microen ... Full text Open Access Cite

Captivity humanizes the primate microbiome.

Journal Article Proceedings of the National Academy of Sciences of the United States of America · September 2016 The primate gastrointestinal tract is home to trillions of bacteria, whose composition is associated with numerous metabolic, autoimmune, and infectious human diseases. Although there is increasing evidence that modern and Westernized societies are associa ... Full text Open Access Cite

A comparison of activity patterns for captive Propithecus tattersalli and Propithecus coquereli.

Journal Article Zoo biology · March 2016 The activity patterns and social interactions of two species of captive sifaka were observed during a 2-year period. Allogrooming was not observed in golden-crowned sifaka and they spent significantly more time resting than the Coquerel's sifaka. Females o ... Full text Open Access Cite

Dust in the wind: How climate variables and volcanic dust affect rates of tooth wear in Central American howling monkeys.

Journal Article American journal of physical anthropology · February 2016 ObjectivesTwo 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. Cross-population studies ... Full text Open Access Cite

On the ground looking up

Chapter · January 8, 2016 Open Access Cite

Testing parallel laser image scaling for remotely measuring body dimensions on mantled howling monkeys (Alouatta palliata).

Journal Article American journal of primatology · August 2015 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 method is crucial. Parallel ... Full text Open Access Cite

Body temperature and thermal environment in a generalized arboreal anthropoid, wild mantled howling monkeys (Alouatta palliata).

Journal Article American journal of physical anthropology · May 2014 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 have been conducted on primate t ... Full text Open Access Cite

Circadian patterns for five species of lemurs at the Duke Lemur Center

Conference AMERICAN JOURNAL OF PHYSICAL ANTHROPOLOGY · March 1, 2014 Link to item Cite

Daily activity and light exposure levels for five species of lemurs at the Duke Lemur Center.

Journal Article American journal of physical anthropology · January 2014 Light is the primary synchronizer of all biological rhythms, yet little is known about the role of the 24-hour luminous environment on nonhuman primate circadian patterns, making it difficult to understand the photic niche of the ancestral primate. Here we ... Full text Open Access Cite

When top-down becomes bottom up: behaviour of hyperdense howler monkeys (Alouatta seniculus) trapped on a 0.6 ha island.

Journal Article PloS one · January 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 groups living under radically di ... Full text Open Access Cite

Methods for Studying the Ecological Physiology of Feeding in Free-Ranging Howlers (Alouatta palliata) at La Pacifica, Costa Rica

Journal Article International Journal of Primatology · January 1, 2012 We lack a general understanding of how primates perform physiologically during feeding to cope with the challenges of their natural environments. We here discuss several methods for studying the ecological physiology of feeding in mantled howlers (Alouatta ... Full text Open Access Cite

Hearing sensitivity and the evolution of acoustic communication in platyrrhine monkeys

Conference AMERICAN JOURNAL OF PHYSICAL ANTHROPOLOGY · January 1, 2012 Link to item Cite

Fecal bacterial diversity of the wild mantled howling monkey (Alouatta palliata).

Conference AMERICAN JOURNAL OF PHYSICAL ANTHROPOLOGY · January 1, 2012 Link to item Cite

Comparison of Alouatta male and female limb bone properties

Conference AMERICAN JOURNAL OF PHYSICAL ANTHROPOLOGY · January 1, 2012 Link to item Cite

Are we looking for loads in all the right places? New research directions for studying the masticatory apparatus of New World monkeys.

Journal Article Anat Rec (Hoboken) · December 2011 New World monkeys display a wide range of masticatory apparatus morphologies related to their diverse diets and feeding strategies. While primatologists have completed many studies of the platyrrhine masticatory apparatus, particularly morphometric analyse ... Full text Open Access Link to item Cite

Dietary choices by four captive slender lorises (Loris tardigradus) when presented with various insect life stages.

Journal Article Zoo biology · March 2011 The slender loris (Loris tardigradus) is a rare, nocturnal prosimian found only in the tropical rainforest of southern India and Sri Lanka. Little is known about their diet, though it is assumed that insects comprise a majority of their wild diet. Based on ... Full text Open Access Cite

Calibrating single-ended fiber-optic Raman spectra distributed temperature sensing data.

Journal Article Sensors (Basel, Switzerland) · January 2011 Hydrologic research is a very demanding application of fiber-optic distributed temperature sensing (DTS) in terms of precision, accuracy and calibration. The physics behind the most frequently used DTS instruments are considered as they apply to four calib ... Full text Open Access Cite

Chemical characterization of oligosaccharides in the milk of six species of New and Old World monkeys.

Journal Article Glycoconjugate journal · October 2010 Human and great ape milks contain a diverse array of milk oligosaccharides, but little is known about the milk oligosaccharides of other primates, and how they differ among taxa. Neutral and acidic oligosaccharides were isolated from the milk of three spec ... Full text Open Access Cite

Secondary transfer of adult mantled howlers (Alouatta palliata) on Hacienda La Pacifica, Costa Rica: 1975-2009.

Journal Article Primates; journal of primatology · July 2010 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 transfer was considered rare (Gl ... Full text Open Access Cite

Diet and the parallel evolution of increased salivary amylase expression in primates.

Conference AMERICAN JOURNAL OF PHYSICAL ANTHROPOLOGY · January 1, 2010 Link to item Cite

Lemur diversity in Madagascar

Journal Article International Journal of Primatology · December 1, 2008 A basic understanding of the taxonomy, diversity, and distributions of primates is essential for their conservation. This review of the status of the taxonomy of lemurs is based on a 5-d workshop entitled "Primate Taxonomy for the New Millennium," held at ... Full text Open Access Cite

Natal emigration by both sexes in the La Pacifica population of mantled howlers: when do some stay?

Journal Article American journal of primatology · February 2008 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 without experiencing a solitary ... Full text Open Access Cite

Telemetry system for assessing jaw-muscle function in freeranging primates.

Journal Article Int J Primatol · 2008 In vivo laboratory-based studies describing jaw-muscle activity and mandibular bone strain during mastication provide the empirical basis for most evolutionary hypotheses linking primate masticatory apparatus form to diet. However, the laboratory data pose ... Open Access Cite

Fatty acid composition of wild anthropoid primate milks.

Journal Article Comparative biochemistry and physiology. Part B, Biochemistry & molecular biology · January 2008 Fatty acids in milk reflect the interplay between species-specific physiological mechanisms and maternal diet. Anthropoid primates (apes, Old and New World monkeys) vary in patterns of growth and development and dietary strategies. Milk fatty acid profiles ... Full text Open Access Cite

Survey of the Howler population of La Pacifica, 2006

Journal Article AMERICAN JOURNAL OF PRIMATOLOGY · June 1, 2007 Link to item Cite

Effect of habitat and sex on body mass and morphometrics of diademed sifakas (Propitheeus diadema).

Journal Article AMERICAN JOURNAL OF PHYSICAL ANTHROPOLOGY · January 1, 2007 Link to item Cite

Mechanical defenses in leaves eaten by Costa Rican howling monkeys (Alouatta palliata).

Journal Article American journal of physical anthropology · January 2006 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 by Alouatta palliata from different ... Full text Open Access Cite

Dental topography and molar wear in Alouatta palliata from Costa Rica.

Journal Article American journal of physical anthropology · October 2004 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 analysis, allows the characterizati ... Full text Open Access Cite

Distribution, ecology, life history, genetic variation, and risk of extinction of nonhuman primates from Costa Rica.

Journal Article Revista de biologia tropical · September 2004 We examined the association between geographic distribution, ecological traits, life history, genetic diversity, and risk of extinction in nonhuman primate species from Costa Rica. All of the current nonhuman primate species from Costa Rica are included in ... Full text Open Access Cite

Associations of mortality with ocular disorders and an intervention of high-dose antioxidants and zinc in the Age-Related Eye Disease Study: AREDS Report No. 13.

Journal Article Archives of ophthalmology (Chicago, Ill. : 1960) · May 2004 ObjectiveTo assess the association of ocular disorders and high doses of antioxidants or zinc with mortality in the Age-Related Eye Disease Study (AREDS).MethodsBaseline fundus and lens photographs were used to grade the macular and lens ... Full text Cite

Adult migration patterns of the mantled howlers of La Pacifica

Journal Article AMERICAN JOURNAL OF PRIMATOLOGY · May 1, 2004 Link to item Cite

Genetic Variation of Mantled Howler Monkeys (Alouatta palliata) from Costa Rica

Journal Article Biotropica · January 1, 2003 We examined genetic diversity of howler monkeys (Alouatta palliata) from Costa Rica. Blood samples of howler monkeys were collected at various locations in Costa Rica, and electrophoresis of total plasma proteins yielded no variation. We also conducted sta ... Full text Open Access Cite

Dental topographic analysis of molar wear in Alouatta palliate.

Journal Article AMERICAN JOURNAL OF PHYSICAL ANTHROPOLOGY · January 1, 2003 Link to item Cite

Translocation of black howler monkeys in Belize

Journal Article Reintroduction News · 2002 Open Access Cite

Description of a feral Alouatta palliata population observed during three decades.

Journal Article AMERICAN JOURNAL OF PHYSICAL ANTHROPOLOGY · January 1, 2001 Link to item Cite

Primate biomaterials resource.

Journal Article AMERICAN JOURNAL OF PHYSICAL ANTHROPOLOGY · January 1, 2001 Link to item Cite

Postcranial adaptations for leaping in primates

Journal Article Journal of Zoology · May 1, 2000 Leaping primates are specialized for hindlimb-propelled locomotion within arboreal habitats. As a group, they include members of Galagonidae, Lemuriformes and Tarsiidae. Postcranial characters analysed here include humeral and femoral diaphyseal rigidity, ... Full text Open Access Cite

Food processing in different social groups of Alouatta palliata.

Journal Article AMERICAN JOURNAL OF PHYSICAL ANTHROPOLOGY · January 1, 1999 Link to item Cite

Infant-nonmother interactions of free-ranging mantled howlers (Alouatta palliata) in Costa Rica

Journal Article International Journal of Primatology · January 1, 1998 Proximate and ultimate explanations of interactions between infants and nonmothers vary depending upon the relatedness of the interactors. We investigated interactions of infants and nonmothers from a 22-month continuous study and from the long-term monito ... Full text Open Access Cite

Parasites of wild howlers (Alouatta spp.)

Journal Article International Journal of Primatology · January 1, 1998 A literature review of howler parasites provides the basis for an overview of the ecological significance of parasite surveys in primates. Within this framework, we have added insights into the interactions between primate hosts and their parasites from a ... Full text Open Access Cite

Stable isotope ratios indicate diet and habitat use in New World monkeys.

Journal Article American journal of physical anthropology · May 1997 This paper demonstrates the use of stable isotope ratios of carbon and nitrogen in animal tissue for indicating aspects of species behavioral strategy. We analyzed hair from individuals representing four species of New World monkeys (Alouatta palliata, the ... Full text Open Access Cite

Dust accumulation in the canopy: a potential cause of dental microwear in primates.

Journal Article American journal of physical anthropology · June 1995 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 forest. This investigation introd ... Full text Open Access Cite

Group takeover by a natal male howling monkey (Alouatta palliata) and associated disappearance and injuries of immatures

Journal Article Primates · October 1, 1994 As part of a long-term study on howling monkey behavior and social dynamics, a known natal male was observed taking over his group from his putative sire. Due to the accidental death of one of the adult males, this natal male had matured in a one-male grou ... Full text Open Access Cite

Morphometrics and growth in captive aye-ayes

Journal Article Folia primatol · 1994 Cite

Morphometrics and growth in captive aye-ayes (Daubentonia madagascariensis).

Journal Article Folia primatologica; international journal of primatology · January 1994 Full text Open Access Cite

Relative growth of the limbs and trunk in sifakas: heterochronic, ecological, and functional considerations.

Journal Article American journal of physical anthropology · December 1993 Limb, trunk, and body weight measurements were obtained for growth series of Milne-Edwards's diademed sifaka, Propithecus diadema edwardsi, and the golden-crowned sifaka, Propithecus tattersalli. Similar measures were obtained also for primarily adults of ... Full text Open Access Cite

Sexual dimorphism in canine length of woolly spider monkeys (Brachyteles arachnoides, E. Geoffroy 1806)

Journal Article International Journal of Primatology · October 1, 1993 We measured canine teeth from 28 woolly spider monkeys (Brachyteles arachnoides) to assess sexual dimorphism and population differences. The specimens are from the Brazilian states of Bahia, Minas Gerais, Espírito Santo, Rio de Janeiro, and São Paulo. We f ... Full text Open Access Cite

First captive-bred aye-aye born in America

Journal Article Lemur News · 1993 Cite

Capture techniques and morphometrics for the woolly spider monkey, or muriqui (Brachyteles arachnoides, E. Geoffroy 1806).

Journal Article American journal of primatology · January 1993 A total of 12 free-ranging muriquis (Brachyteles arachnoides) were captured with Telazol® at Fazenda Esmeralda, Minas Gerais, Brazil, and at Fazenda Barreiro Rico, São Paulo, Brazil. All animals were measured, marked, weighed, and released. Previously repo ... Full text Open Access Cite

Dispersal patterns in Costa Rican mantled howling monkeys

Journal Article International Journal of Primatology · August 1, 1992 Both male and female juveniles disperse in Costa Rican mantled howling monkeys (Alouatta palliata). 79% of the males and 96% of the females leave their natal groups. Males may spend up to 4 years and females up to 1 year as solitaries. Extra-group individu ... Full text Open Access Cite

Social organization of free-ranging ruffed lemurs, Varecia variegata variegata: mother-adult daughter relationship.

Journal Article American journal of primatology · January 1992 The relationship between a mother and an adult daughter is examined in a group of free-ranging ruffed lemurs (Varecia variegata) at the Duke University Primate Center (DUPC). Although the two females were affiliative during the birth season, interactions d ... Full text Open Access Cite

Morphometrics and testicle size of rain forest lemur species from southeastern Madagascar

Journal Article Journal of Human Evolution · January 1, 1992 Six species of prosimians inhabiting the montane rain forest of the Ranomafana National Park located in southeastern Madagascar were captured, weighed, and measured during the months of May or June of 1987, 1988, and 1989. There were no significant differe ... Full text Open Access Cite

Dental microwear in live, wild-trapped Alouatta palliata from Costa Rica.

Journal Article American journal of physical anthropology · July 1991 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 with laboratory primates has shown ... Full text Open Access Cite

Breech delivery and birth-related behaviors in wild mantled howling monkeys.

Journal Article American journal of primatology · January 1991 The breech birth of an infant mantled howling monkey was observed on February 12, 1990. The mother assisted the successful delivery by pulling on the infant's tail and hindleg. No other members of the social group attended the mother or demonstrated any in ... Full text Open Access Cite

Field methods for capture and measurement of three monkey species in Costa Rica.

Journal Article Folia primatologica; international journal of primatology · January 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 gun. The drugs used were Ketaset, ... Full text Open Access Cite

A coprological survey of parasites of wild mantled howling monkeys, Alouatta palliata palliata.

Journal Article Journal of wildlife diseases · October 1990 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 monkeys from Santa Rosa National P ... Full text Open Access Cite

MORPHOMETRICS OF 6 RAIN-FOREST PROSIMIAN SPECIES FROM SOUTHEASTERN MADAGASCAR

Journal Article AMERICAN JOURNAL OF PHYSICAL ANTHROPOLOGY · February 1, 1990 Link to item Cite

DENTAL MICROWEAR IN LIVE, WILD-TRAPPED ALOUATTA FROM COSTA-RICA

Journal Article AMERICAN JOURNAL OF PHYSICAL ANTHROPOLOGY · February 1, 1990 Link to item Cite

The monkeys of Lomas Barbudal

Journal Article Bee Line · 1989 Cite

Consumption of cyanogenic bamboo by a newly discovered species of bamboo lemur.

Journal Article American journal of primatology · January 1989 Three species of bamboo-eating lemurs were found to be sympatric in the southeastern rain forests of Madagascar. Sympatric species generally differ in habitat utilization or diet, but these three closely related bamboo lemurs lived in the same habitat and ... Full text Open Access Cite

Sexual selection and canine dimorphism in New World monkeys.

Journal Article American journal of physical anthropology · November 1988 Social and ecological factors are important in shaping sexual dimorphism in Anthropoidea, but there is also a tendency for body-size dimorphism and canine dimorphism to increase with increased body size (Rensch's rule) (Rensch: Evolution Above the Species ... Full text Open Access Cite

Spider monkey home ranges: A comparison of radio telemetry and direct observation.

Journal Article American journal of primatology · January 1988 The ranging patterns of two male and five female spider monkeys (Ateles geoffroyi) were studied with the use of radio telemetry in Santa Rosa National Park, Costa Rica. The average size of a spider monkey home range was 62.4 hectares; however, range size v ... Full text Open Access Cite

HOWLING MONKEYS - PAST AND PRESENT

Journal Article INTERNATIONAL JOURNAL OF PRIMATOLOGY · October 1, 1987 Link to item Cite

MORPHOMETRICS OF THE GENUS ALOUATTA

Journal Article INTERNATIONAL JOURNAL OF PRIMATOLOGY · October 1, 1987 Link to item Cite

BEHAVIORAL AND SIZE CORRELATES OF CANINE DIMORPHISM IN PLATYRRHINE PRIMATES

Journal Article AMERICAN JOURNAL OF PHYSICAL ANTHROPOLOGY · February 1, 1987 Link to item Cite

SOCIAL-ORGANIZATION IN VARECIA-VARIEGATA

Journal Article AMERICAN JOURNAL OF PHYSICAL ANTHROPOLOGY · February 1, 1987 Link to item Cite

Plasma lipoproteins of free-ranging howling monkeys (Alouatta palliata).

Journal Article Comparative biochemistry and physiology. B, Comparative biochemistry · January 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 plasma. 3. Fatty acid compositions ... Full text Open Access Cite

TESTING PREDICTIONS BASED ON INFANTICIDE THEORY

Journal Article AMERICAN JOURNAL OF PRIMATOLOGY · January 1, 1986 Link to item Cite

Meat eating and predation in captive‐born semi‐free‐ranging Lemur fulvus and caged Lemur macaco

Journal Article Zoo Biology · January 1, 1985 A group of brown lemurs, Lemur fulvus, and a group of black lemurs, Lemur macaco, at the Duke University Center for the Study of Primate Biology and History have been observed to capture and eat birds and lizards. Although vertebrate prey are not unusual f ... Full text Open Access Cite

The impact of cropping on wild populations of Saguinus mystax and Saguinus fuscicollis in Peru.

Journal Article American journal of primatology · January 1984 A transect census technique was used to estimate the population densities of Saguinus mystax and Saguinus fuscicollis at two sites in Peru. Cropping of these two species had occurred five years before the census at one site and two years before at the othe ... Full text Open Access Cite

GROUP COMPOSITION IN MANTLED HOWLING MONKEYS DURING THE PAST 12 YEARS

Journal Article AMERICAN JOURNAL OF PHYSICAL ANTHROPOLOGY · January 1, 1984 Link to item Cite

Food choice from endemic North Carolina tree species by captive prosimians (Lemur fulvus).

Journal Article American journal of primatology · January 1983 Seven captive-born lemurs (Lemur fulvus) at the Duke University Primate Center were presented with leaves of different maturity from five species of North Carolina trees. The animals demonstrated three distinct behaviors toward the novel plant material. Th ... Full text Open Access Cite

LEMURS IN A NORTH-CAROLINA FOREST

Journal Article AMERICAN JOURNAL OF PRIMATOLOGY · January 1, 1983 Link to item Cite

MEAT EATING BY CAPTIVE LEMURS

Journal Article AMERICAN JOURNAL OF PRIMATOLOGY · January 1, 1983 Link to item Cite

The impact of plant secondary compounds on primate feeding behavior

Journal Article American Journal of Physical Anthropology · January 1, 1982 The recent literature on plant secondary compounds and their influence on primate feeding behavior is reviewed. Many studies of nonhuman primates document the extreme selectivity that primates, particularly herbivorous species, demonstrate in their food ch ... Full text Open Access Cite

Adoption of infant howling monkeys (Alouatta palliata).

Journal Article American journal of primatology · January 1981 During 3 years of continuous field observations on mantled howlers (Alouatta palliata Gray) in Costa Rica we observed five infants without mothers in the main study group. Four of these infants solicited care and two were adopted (one permanently, one temp ... Full text Cite

SEX-RATIO AND DIFFERENTIAL MORTALITY IN HOWLING MONKEYS

Journal Article AMERICAN JOURNAL OF PHYSICAL ANTHROPOLOGY · January 1, 1981 Link to item Cite

Reproduction and population growth in free-ranging mantled howling monkeys.

Journal Article American journal of physical anthropology · July 1980 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. Gestation averaged 186 days. The a ... Full text Open Access Cite

FEEDING STRATEGIES AND DIETARY OPTIMIZATION

Journal Article AMERICAN JOURNAL OF PHYSICAL ANTHROPOLOGY · January 1, 1979 Link to item Cite

Drinking from arboreal water sources by mantled howling monkeys (Alouatta palliata Gray).

Journal Article Folia primatologica; international journal of primatology · January 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 during the wet season (meteorologic ... Full text Open Access Cite

POISON IN A MONKEYS GARDEN OF EDEN

Journal Article NATURAL HISTORY · January 1, 1977 Open Access Link to item Cite

SECONDARY COMPOUNDS AND FEEDING-BEHAVIOR OF LEAF-EATING PRIMATES

Journal Article AMERICAN JOURNAL OF PHYSICAL ANTHROPOLOGY · January 1, 1977 Link to item Cite

Barely known species.

Journal Article Science (New York, N.Y.) · September 1976 Full text Open Access Cite

DOMINANCE IN MANTLED HOWLING MONKEYS

Journal Article AMERICAN JOURNAL OF PHYSICAL ANTHROPOLOGY · January 1, 1975 Link to item Cite