...Tracie McKinney While howlers are the most ecologically flexible of the atelines, they must still respond to issues arising from anthropogenic modifications, such as fragmentation or dietary changes. A group of Alouatta palliata living in a highly modified landscape (commensal group) at the Curú...

... in the dietary patterns of black howler monkeys ( Alouatta pigra ) caused by a decrease in the availability of preferred foods are a main determinant of variation in time budgets. We predicted that individuals would trade off travel time for resting time (i.e., minimize energy expenditure) as the diet included...

...Manuel Ruiz-García; Ángela Cerón; Sebastián Sánchez-Castillo; Pilar Rueda-Zozaya; Myreya Pinedo-Castro; Gustavo Gutierrez-Espeleta; Joseph Mark Shostell We analyzed 156 specimens of diverse howler monkey taxa ( Alouatta ; Atelidae, Primates) for different mitochondrial genes (5,567 base pairs...

...Katherine R. Amato; Sarie Van Belle; Brianna Wilkinson We used data collected during two concurrent studies of black howler monkeys (Alouatta pigra) in Palenque National Park, Mexico, to compare systematically three methods of behavioral data collection [group activity scan sampling (group scans...

... to persons or property resulting from any ideas, methods, instructions or products referred to in the content or advertisements. Breeding seasonality Dominance DNA typing Paternity Male reproductive success Alouatta Erythrocebus Lemur Macaca Mandrillus Pan Papio Brief Report...

...Colin A. Chapman The foraging strategies and association patterns of 3 species of primates (Ateles geoffroyi, Alouatta palliata, Cebus capucinus) were studied over a 5-year period. The objective of the study was to provide a quantitative test of the hypothesis that the size, density...

...Colin Chapman Variability in diet and dietary overlap were documented for the three species of primates in Santa Rosa National Park, Costa Rica (Ateles geoffroyi, Alouatta palliata, Cebus capucinus). All three species exhibited great flexibility in their diets, such that in 1 month a monkey species...

...) in the study area, and entered a variety of edge habitats. Saguinus midas midas, the only callitrichid in Surinam, also occurred mainly in the understory and lower to middle parts of the canopy of all five forest types, but was the only species to spend more time in edges than in non-edge habitats. Alouatta...

...H. Brehme; L. Newell-Morris The epidermal pattern frequencies and pattern intensity values of the palms and soles are described for 110 male and 80 female howler monkeys (genus Alouatta) including the species A. belzebul, A. seniculus, A. caraya and A. villosa. Interspecific comparisons are made...

...Philip Hershkovitz Comparisons of a moderately worn pm 4 in its jaw, and an isolated dpm 4 of the Oligocene-Miocene Homunculus (the second tooth originally described as that of a marsupial), indicate cebid identity with affinities nearest Alouatta. Diagnoses of dpm 4 , pm 4 and m 1 of all known...

...John G H. Cant Field observations demonstrate clear differences in locomotion and feeding postures between spider monkeys (Ateles) and howling monkeys (Alouatta). When feeding, Ateles employs sitting postures approximately half the time, and a variety of suspensory postures using the tail the other...

...Frank Mendel A 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...

...Miguel A. Schön Ybarra; Glenn C. Conroy A comparison of the non-metric features of the ulnar fragment (YPM 23940) referred to Aegyptopithecus zeuxis with those in the same bone of Alouatta , Ateles , and Lagothrix – the three living taxa whose ulnae most closely resemble that of the fossil -reveals...

..., situated caudal to the internarium is not involved in platyrrhinism. Aotus and Alouatta are, according to the definition, truely platyrrhine. The division of the higher primates into Platyrrhina and Catarrhina is justified. The anterior surface of the internarium (sinus hairs) is a sensorial area. 10...

..., congenital crown aberration, and irregular placement. Cranial anomalies Dental anomalies Caries Alouatta Ateles Cebus Plagiocephaly Crazing Periodontal and pulpal disorders Folia primatol. 28: 1-42 (1977) Cranial and Dental Anomalies in Three Species of Platyrrhine Monkeys from Nicaragua J ames...

...M.K. Neville This report on the intratroop social behavior of Alouatta seniculus, based on field work in Trinidad and Venezuela, emphasizes the importance of apparently matrifocal groupings. Comparisons are made with other species, particularly to A. villosa, and red howlers are found to do more...

...M.K. Neville The small troops and roughly even adult sexual ratio of Alouatta seniculus , studied in Bush Bush Forest in Trinidad and on the ranch Hato Masaguaral in the llanos of Venezuela, are more similar to A. caraya than to A. palliata . Other aspects of the troop composition are discussed...

...M.A. Schön The howler monkeys are notorious for the low pitched but high volume howls emitted in particular circumstances. The mechanism for achieving such high voice intensities is still little understood. The present study is based on the dissection of the hyolaryngeal apparatus in 6 Alouatta...

... or of their effectiveness, quality or safety. The publisher and the editor(s) disclaim responsibility for any injury to persons or property resulting from any ideas, methods, instructions or products referred to in the content or advertisements. Ossa suprasternalia Prosimians Simians Fissura sterni Alouatta...

... and locomotion of Alouatta and Ateles. This report, therefore, denies knuckle-walking as a possible locomotive habitus for D. (Proconsul) africanus, and proposes Alouatta and Ateles as the best available models for the locomotor behavior of D. (Proconsul) africanus. © 1973 S. Karger AG, Basel 1973 Copyright...