Results 161 to 170 of about 1,736 (183)

Factors Influencing the Reproductive Success of Female Black Howlers (Alouatta pigra)

International Journal of Primatology, 2016
Measuring reproductive success is necessary to determine an organism's fitness, and thus, to address evolutionary processes. In this study we determined the effects of social, ecological, and individual attributes on the reproductive success of black howlers (Alouatta pigra) measured through infant survival and interbirth intervals (IBIs). From 2006 to
Pedro Américo D. Dias, Alejandro Coyohua-Fuentes, Domingo Canales-Espinosa, Ariadna Rangel-Negrín   +3 more
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Geographical distribution of the black howler (Alouatta pigra) in Central America

Primates, 1986
The geographic range of the black howler,Alouatta pigra in Mexico, Guatemala, and Belize was investigated by travelling through and visiting 65 locations within or close to the expected range. The existence of the species was noted through first hand observations or was documented by talking with residents and knowledgeable people in the area ...
Robert H. Horwich, Edwin D. Johnson
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FIELD TECHNIQUES FOR VASECTOMY IN BLACK HOWLER MONKEYS (ALOUATTA PIGRA)

Journal of Zoo and Wildlife Medicine
Three adult black howler monkeys (Alouatta pigra) were vasectomized for the purpose of population control. Two different surgical approaches (inguinal and pelvic) were used to vasectomize the animals under general anesthesia. One monkey was vasectomized with a pelvic approach, and the other two monkeys were vasectomized with an inguinal approach.
Samantha C, Rummel, Andrew C, Cushing, Christopher K, Smith, Pablo Jarrín, Yépez, Deborah, Haines   +4 more
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Population Reduction and Social Disorganization in Alouatta pigra Following a Hurricane

International Journal of Primatology, 2003
The opportunity to study the effects of a powerful hurricane on monkey populations, diet, and behavior via pre- and post-hurricane data was presented when hurricane Iris virtually destroyed the forest along Monkey River in southern Belize on October 8, 2001, including a 52-ha area where black howlers have been subjects since 1999. Before the hurricane,
Mary S. M. Pavelka, Olivia T. Brusselers, Dana Nowak, Alison M. Behie   +3 more
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Alouatta pigra Lawrence 1933

1993
Published as part of Colin P. Groves, 1993, Order Primates, pp. 243-277 in Mammal Species of the World (2 nd Edition), Washington and London :Smithsonian Institution Press on page 255, DOI: 10.5281/zenodo ...
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Dispersal patterns in black howler monkeys (Alouatta pigra): Integrating multiyear demographic and molecular data

Molecular Ecology, 2021
AbstractDispersal is a fundamental process in the functioning of animal societies as it regulates the degree to which closely related individuals are spatially concentrated. A species’ dispersal pattern can be complex as it emerges from individuals’ decisions shaped by the cost–benefit tradeoffs associated with either remaining in the natal group or ...
Sarie Van Belle, Anthony Di Fiore
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Detection and prevalence of adenoviruses from free-ranging black howler monkeys (Alouatta pigra)

Virus Genes, 2018
Adenoviruses are important pathogens known to infect vertebrate hosts, including a wide range of primates. Despite its importance, data on the diversity of these viruses in non-human primates living in their natural habitat remain scarce. In this study, we conducted a surveillance of adenoviral infection in wild black howler monkeys from two protected ...
Laura Elisa Argüello-Sánchez, Alejandro Espinosa de los Monteros, Diego Santiago-Alarcon, Christian Alberto García-Sepúlveda   +3 more
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Demographic Features of Alouatta pigra Populations in Extensive and Fragmented Forests

2006
Until now, little information was known about demographic features of the regionally endemic black howler populations living in large tracks of tropical forests. Here, we report results from population surveys conducted in eight extensive forests sites (>8.5 km2) in Mexico and Guatemala.
Sarie Van Belle, Alejandro Estrada
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Social and hormonal mechanisms underlying male reproductive strategies in black howler monkeys (Alouatta pigra)

Hormones and Behavior, 2009
We investigated the social and hormonal mechanisms underlying male reproductive strategies in two multimale-multifemale groups of black howler monkeys (Alouatta pigra) during a 14-month study in Palenque National Park, Mexico. Fecal glucocorticoid (fGC) and androgen (fA) levels were analyzed for 343 fecal samples collected from 14 males during their ...
S, Van Belle, A, Estrada, T E, Ziegler, K B, Strier   +3 more
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Species status of the black howler monkey,Alouatta pigra, of Belize

Primates, 1983
Small troop sizes which averaged 5.23 members per troop and the early descent of male testes inAlouatta pigra show a marked difference fromA. palliata. These differences strengthenSmith's (1970) observations of morphological differences betweenA. pigra andA. palliata.
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