Results 1 to 10 of about 1,736 (183)

Variation in the Extraction Efficiency of Estradiol and Progesterone in Moist and Lyophilized Feces of the Black Howler Monkey (Alouatta pigra): Alternative Methods. [PDF]

Front Physiol, 2011
several fecal steroid extraction techniques have been developed to measure the ovary function in different species of mammals. However, regardless of the method of extraction and the sample type chosen, is has been observed that they can yield results ...
Torres-Pelayo Vdel R, Rovirosa-Hernández MJ, García-Orduña F, Chavira-Ramírez RD, Boeck L, Canales-Espinosa D, Rodríguez-Landa JF.   +6 more
europepmc   +4 more sources

Birth of a wild black howler monkey (Alouatta pigra) at an anthropogenic site. [PDF]

Primates, 2023
AbstractWe present the first description of a diurnal live birth of a wild black howler monkey (Alouatta pigra). The mother formed part of a group of five individuals inhabiting an anthropogenic setting in the tropical lowlands of southeast Mexico. A total of 7 h and 50 min passed from the rupture of the amniotic sac early in the day to the crowning of
Cárdenas-Navarrete A, Van Belle S.
europepmc   +5 more sources

Habitat degradation impacts black howler monkey (Alouatta pigra) gastrointestinal microbiomes. [PDF]

ISME J, 2013
Abstract The gastrointestinal (GI) microbiome contributes significantly to host nutrition and health. However, relationships involving GI microbes, their hosts and host macrohabitats remain to be established. Here, we define clear patterns of variation in the GI microbiomes of six groups of Mexican black howler monkeys (Alouatta pigra ...
Amato KR, Yeoman CJ, Kent A, Righini N, Carbonero F, Estrada A, Gaskins HR, Stumpf RM, Yildirim S, Torralba M, Gillis M, Wilson BA, Nelson KE, White BA, Leigh SR.   +14 more
europepmc   +4 more sources

Differences in sperm morphology between Alouatta palliata and Alouatta pigra are consistent with the intensity of sperm competition in each species. [PDF]

Am J Primatol, 2023
AbstractThe intensity of sperm competition, in which sperm compete within the female reproductive tract to reach and fertilize her eggs, varies in species with different mating systems. Sperm competition is more intense in species where males cannot monopolize access to reproductive females and females mate with multiple males.
Hirst MA, Rodas-Martínez AZ, Milich KM, Cortés-Ortiz L.   +3 more
europepmc   +3 more sources

Spatial aggregation of fruits explains food selection in a neotropical primate (Alouatta pigra). [PDF]

Sci Rep, 2019
AbstractThe availability and spatial distribution of food resources affect animal behavior and survival. Black howler monkeys (Alouatta pigra) have a foraging strategy to balance their nutrient intake that involves mixing their consumption of leaves and fruits.
Aristizabal JF, Negrete-Yankelevich S, Macías-Ordóñez R, Chapman CA, Serio-Silva JC.   +4 more
europepmc   +4 more sources

Serological evidence for potential yellow fever virus infection in non-human primates, southeastern Mexico. [PDF]

One Health Outlook, 2023
Background Arthropod-borne flaviviruses like dengue virus (DENV) and yellow fever virus (YFV) are major human pathogens. In Latin America, YFV is maintained in sylvatic cycles involving non-human primates (NHP) and forest-dwelling mosquitos.
Salas-Rojas M, de Oliveira-Filho EF, Almazán-Marín C, Rodas-Martínez AZ, Aguilar-Setién Á, Drexler JF.   +5 more
europepmc   +2 more sources

Gut microbiota signatures of the three Mexican primate species, including hybrid populations. [PDF]

PLoS One
Diversity of the gut microbiota has proven to be related with host physiology, health and behavior, influencing host ecology and evolution. Gut microbial community relationships often recapitulate primate phylogeny, suggesting phylosymbiotic associations.
Zubillaga-Martín D, Solórzano-García B, Yanez-Montalvo A, de León-Lorenzana A, Falcón LI, Vázquez-Domínguez E.   +5 more
europepmc   +2 more sources

Video-Sound Recording Devices Reveal Multiple Drivers of Nocturnal Vocalizations in Tibetan Macaques. [PDF]

Ecol Evol
This study investigates the nocturnal vocal behavior of Tibetan macaques in Huangshan, China, using 4G infrared cameras and passive acoustic monitoring (PAM). Findings reveal a bimodal vocalization pattern (18:00–19:00 and 21:00–23:00), influenced by sex, age, social centrality, kinship, and ecological factors such as wind direction, temperature, and ...
Gao X, Zhang T, Wang J, Yang D, Chen X, Yang P, Li W, Sun B, Xia D, Li J, Wang X.   +10 more
europepmc   +2 more sources

Present and Future: Using Ecological Niche Modeling to Understand the Conservation Status of Alouatta caraya (Primates, Atelidae) and Promote Its Protection. [PDF]

Am J Primatol
Free‐living Alouatta caraya: the male (top left) and his females (bottom left). We used ecological niche modeling to assess the species' climate suitability both now and in future projections. Between now and 2030, there is a 31% reduction in distribution.
Schwantes JB, Antunes LA, Fortes VB, Robe LJ.   +3 more
europepmc   +2 more sources

Zoonotic Parasites in Marmosets (Callithrix Spp.) From Southern Brazil: Insights From a One Health Perspective. [PDF]

J Med Primatol
ABSTRACT Background Currently, six species of Callithrix are frequently observed in anthropized and degraded environments in different regions of Brazil. This occupation favors interactions with humans and increases the risk of infection by parasites with zoonotic potential.
Dos Santos ME, Azambuja M, Vidolin D, de Oliveira RN.   +3 more
europepmc   +2 more sources