Search results for: Juan Carlos Serio-Silva

Items from 1 to 18 out of 18 results

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A simple assay for measuring tannin‐protein precipitation capacity offers insights into the diet and food choice of black howler monkeys (Alouatta pigra)

María Fernanda Alvarez‐Velazquez, Fabiola Carolina Espinosa‐Gómez, John F. Aristizabal, Paul A. Garber, more

American Journal of Primatology > 86 > 7 > n/a - n/a

Phenolics, like tannins, are plant‐specialized metabolites that play a protective role against herbivory. Tannins can reduce palatability and bind with proteins to reduce digestibility, acting as deterrents to feeding and impacting nutrient extraction by herbivores. Some assays measure tannin and total phenolics content in plants but lack determination of their biological effects, hindering the interpretation...

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Lead exposure and its relationship with fecal cortisol levels in black howler monkeys (Alouatta pigra)

María Fernanda Alvarez‐Velazquez, Mauricio González‐Jáuregui, Sergio Albino Miranda, Genoveva Rosano‐Ortega, more

American Journal of Primatology > 86 > 4 > n/a - n/a

Efficiently detecting early environmental threats to wildlife is vital for conservation. Beyond obvious dangers like habitat loss or deforestation, our study focuses on one of the most hazardous toxic metals for wildlife: lead (Pb). Pb is a widespread, cumulative, and insidious environmental pollutant that can trigger a wide range of physiological, biochemical, and behavioral disorders. In fact, Pb...

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In remembrance of Victor Rico Gray (1951‐2021): An astonishing tropical ecologist

Wesley Dáttilo, Juan Carlos Serio‐Silva, John N. Thompson, Kleber Del‐Claro, more

Biotropica > 53 > 4 > 1238 - 1243

In this remembrance, we have brought together some of Victor Rico‐Gray’s friends and collaborators to recall his many contributions to tropical ecology and his influence on so many young scientists. Victor’s research ranged from Mexican ethnobotany to the evolutionary ecology of complex interactions between ants and plants. His research was highly collaborative, forming strong bonds among those who...

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Molecular detection of Bifidobacterium spp. in faeces of black howler monkeys (Alouatta pigra)

Dolores Hernández‐Rodríguez, Antonio Acini Vásquez‐Aguilar, Juan Carlos Serio‐Silva, Eria Alaide Rebollar, more

Journal of Medical Primatology > 48 > 2 > 99 - 105

Background Bifidobacterium genus are considered to be beneficial bacteria for their hosts; however, knowledge about the specific species that are part of the gut microbiome of howler monkeys is scarce. Polymerase chain reaction (PCR) is a useful technique for the identification of non‐cultivable or difficult to grow bacterial species. With the goal of detecting species of the genus Bifidobacterium...

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Salivary tannin‐binding proteins are a pervasive strategy used by the folivorous/frugivorous black howler monkey

Fabiola Carolina Espinosa‐Gómez, Juan Carlos Serio‐Silva, Juan Diego Santiago‐García, Carlos Alfredo Sandoval‐Castro, more

American Journal of Primatology > 80 > 2 > n/a - n/a

Dietary tannins can affect protein digestion and absorption, be toxic, and influence food selection by being astringent and bitter tasting. Animals that usually ingest tannins may regularly secrete tannin‐binding salivary proteins (TBSPs) to counteract the negative effects of tannins or TBSPs production can be induced by a tannin‐rich diet. In the wild, many primates regularly eat a diet that contains...

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Through the eyes of children: Drawings as an evaluation tool for children's understanding about endangered Mexican primates

Montserrat Franquesa‐Soler, Juan Carlos Serio‐Silva

American Journal of Primatology > 79 > 12 > n/a - n/a

This study seeks to understand children's perceptions and knowledge of endangered Mexican primates. The black howler monkey (Alouatta pigra) is a charismatic species endemic to Southern Mexico, Northern Belize, and Guatemala and is a symbol of the region that fosters a sense of local pride. Therefore, it can be considered a flagship species for the forests of Southern Mexico. We evaluated the perception...

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Flotation techniques (FLOTAC and mini-FLOTAC) for detecting gastrointestinal parasites in howler monkeys

Mayra Alejandra Alvarado-Villalobos, Giuseppe Cringoli, Maria Paola Maurelli, Aurelie Cambou, more

Parasites & Vectors > 2017 > 10 > 1 > 1-8

Background Analyses of environmental correlates of the composition of gastrointestinal parasite communities in black howler monkeys (Alouatta pigra) have been hindered by inadequate calibration techniques of detection and quantification methods of the parasites. Here we calibrate samples and compare the likelihood of parasite detection using two flotation techniques, FLOTAC and Mini-FLOTAC, and compare...

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Biochemical and hematological evaluations of black howler monkeys (Alouatta pigra) in highly degraded landscapes in Mexico

Luis M. García‐Feria, Colin A. Chapman, Rosalía Pastor‐Nieto, Juan Carlos Serio‐Silva

Journal of Medical Primatology > 46 > 6 > 304 - 310

Background Loss and fragmentation of Neotropical primates’ habitat can alter the health and individual adaptation. Physiological parameters reflect health status and individuals responses to the habitat conditions. Methods We captured six wild adult females and six adult males of Alouatta pigra to evaluate their physical condition (body mass, respiratory and heart rate, and rectal temperature),...

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Contrasting time‐based and weight‐based estimates of protein and energy intake of black howler monkeys (Alouatta pigra)

John F. Aristizabal, Jessica M. Rothman, Luis M. García‐Fería, Juan Carlos Serio‐Silva

American Journal of Primatology > 79 > 4 > 1 - 8

Two methods are commonly used to describe the feeding behavior of wild primates, one based on the proportion of time animals spent feeding on specific plant parts (“time‐based” estimates) and one based on estimates of the actual amounts of different plant materials ingested (‘“weight‐based” estimates). However, studies based on feeding time may not be accurate for making quantitative assessments...

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Cascading impacts of anthropogenically driven habitat loss: deforestation, flooding, and possible lead poisoning in howler monkeys (Alouatta pigra)

Juan Carlos Serio-Silva, Eugenia J. Olguín, Luis Garcia-Feria, Karla Tapia-Fierro, more

Primates > 2015 > 56 > 1 > 29-35

To construct informed conservation plans, researchers must go beyond understanding readily apparent threats such as habitat loss and bush-meat hunting. They must predict subtle and cascading effects of anthropogenic environmental modifications. This study considered a potential cascading effect of deforestation on the howler monkeys (Alouatta pigra) of Balancán, Mexico. Deforestation intensifies flooding...

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Black howler monkey (Alouatta pigra) activity, foraging and seed dispersal patterns in shaded cocoa plantations versus rainforest in southern Mexico

Diego A. Zárate, Ellen Andresen, Alejandro Estrada, Juan Carlos Serio‐silva

American Journal of Primatology > 76 > 9 > 890 - 899

Recent evidence has shown that primates worldwide use agroecosystems as temporary or permanent habitats. Detailed information on how these primates are using these systems is scant, and yet their role as seed dispersers is often implied. The main objective of this study was to compare the activity, foraging patterns and seed dispersal role of black howler monkeys (Alouatta pigra) inhabiting shaded...

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Highly nested diets in intrapopulation monkey–resource food webs

Wesley Dáttilo, Juan Carlos Serio‐Silva, Colin A. Chapman, Víctor Rico‐Gray

American Journal of Primatology > 76 > 7 > 670 - 678

Recently several studies have focused on the structure of ecological networks to provide insights into ecological and coevolutionary dynamics of interacting species. However, rarely have the tools of ecological networks been used to understand how feeding relationships vary among individuals of the same population. Here we use 7 years of data and network analyzed to examine the intrapopulation diet...

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Behavioral and physiological responses to subgroup size and number of people in howler monkeys inhabiting a forest fragment used for nature‐based tourism

Adriana R. Aguilar‐Melo, Ellen Andresen, Jurgi Cristóbal‐Azkarate, Victor Arroyo‐Rodríguez, more

American Journal of Primatology > 75 > 11 > 1108 - 1116

Animals' responses to potentially threatening factors can provide important information for their conservation. Group size and human presence are potentially threatening factors to primates inhabiting small reserves used for recreation. We tested these hypotheses by evaluating behavioral and physiological responses in two groups of mantled howler monkeys (Alouatta palliata mexicana) at the “Centro...

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Resource Use in a Landscape Matrix by an Arboreal Primate: Evidence of Supplementation in Black howlers (Alouatta pigra)

Gilberto Pozo-Montuy, Juan Carlos Serio-Silva, Colin A. Chapman, Yadira M. Bonilla-Sánchez

International Journal of Primatology > 2013 > 34 > 4 > 714-731

Across the tropics, landscapes of continuous rain forest are being replaced by forest fragments embedded in a matrix of pastures and farmlands. This conversion has endangered many species, including arboreal primates. Species vary, however, in how they are able to supplement their diets from the matrix, although this is rarely studied in primates. We studied two groups of black howlers (Alouatta pigra...

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Howlers Are Able to Survive in Eucalyptus Plantations Where Remnant and Regenerating Vegetation Is Available

Yadira Magali Bonilla-Sánchez, Juan Carlos Serio-Silva, Gilberto Pozo-Montuy, Colin A. Chapman

International Journal of Primatology > 2012 > 33 > 1 > 233-245

Reversing forest loss through reforestation has become a critical strategy to decrease global climate change, and such programs are more likely to be initiated if they can produce a subsequent monetary gain for the host country. As a result, the planting of monocultures of harvestable trees has become widespread and the practice is accelerating. However, little is known about the effect of such reforestation...

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Influence of the landscape matrix on the abundance of arboreal primates in fragmented landscapes

Gilberto Pozo-Montuy, Juan Carlos Serio-Silva, Yadira M. Bonilla-Sánchez

Primates > 2011 > 52 > 2 > 139-147

Composition of the landscape matrix of surrounding forest fragments is thought to be critically important to the survival of arboreal primates because it offers structures that help the animals move between fragments and other foraging sites. However, little is known about the composition of the matrix used by these animals. The aim of this study was to quantitatively assess the importance of the...

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Potential distribution of Mexican primates: modeling the ecological niche with the maximum entropy algorithm

Francisca Vidal-García, Juan Carlos Serio-Silva

Primates > 2011 > 52 > 3 > 261-270

We developed a potential distribution model for the tropical rain forest species of primates of southern Mexico: the black howler monkey (Alouatta pigra), the mantled howler monkey (Alouatta palliata), and the spider monkey (Ateles geoffroyi). To do so, we applied the maximum entropy algorithm from the ecological niche modeling program MaxEnt. For each species, we used occurrence records from scientific...

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Movement and resource use by a group of Alouatta pigra in a forest fragment in Balancán, México

Gilberto Pozo-Montuy, Juan Carlos Serio-Silva

Primates > 2007 > 48 > 2 > 102-107

Uncommonly observed behaviors were systematically recorded in a troop (n = 9 individuals) of black howler monkeys (Alouatta pigra) inhabiting a small forest fragment (1.7 ha) in Leona Vicario, Balancán, Tabasco, Mexico. Between February 2002 and January 2003 (n = 499 h), we observed behaviors such as ground travel (85 occasions, total = 269 min/10.8% of total locomotion time), ground foraging (eight...

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