scholarly journals Demography and Conservation Status for the Critically Endangered Mexican Howler Monkey (Alouatta Palliata Mexicana) in the Southern Part of Los Tuxtlas Biosphere Reserve, Veracruz, Mexico

2010 ◽  
Vol 17 (1) ◽  
pp. 12-17 ◽  
Author(s):  
Eric Isaí Ameca - y Juarez ◽  
Ernesto Rodríguez - Luna ◽  
Georgina M. Mace
Keyword(s):  
Conservation Status ◽  
Biosphere Reserve ◽  
Alouatta Palliata ◽  
Critically Endangered ◽  
Howler Monkey ◽  
Los Tuxtlas ◽  
Alouatta Palliata Mexicana

Limited genetic diversity in the critically endangered Mexican howler monkey (Alouatta palliata mexicana) in the Selva Zoque, Mexico

Primates ◽  
2013 ◽  
Vol 55 (2) ◽  
pp. 155-160 ◽  
Author(s):  
Jacob C. Dunn ◽  
Aralisa Shedden-González ◽  
Jurgi Cristóbal-Azkarate ◽  
Liliana Cortés-Ortiz ◽  
Ernesto Rodríguez-Luna ◽  
...  
Keyword(s):  
Genetic Diversity ◽  
Alouatta Palliata ◽  
Critically Endangered ◽  
Howler Monkey ◽  
Alouatta Palliata Mexicana ◽  
Limited Genetic Diversity

scholarly journals New records of a critically endangered shrew from Mexican cloud forests (Soricidae, Cryptotis nelsoni) and prospects for future field research

2018 ◽  
Vol 6 ◽  
Author(s):  
Lázaro Guevara ◽  
Víctor Sánchez-Cordero
Keyword(s):  
New Records ◽  
Conservation Status ◽  
Biosphere Reserve ◽  
Climatic Conditions ◽  
Critically Endangered ◽  
Type Locality ◽  
Mountain Range ◽  
Los Tuxtlas ◽  
Cloud Forests ◽  
Niche Modelling

The Nelson´s small-eared shrew, Cryptotisnelsoni (Merriam, 1895), is a critically endangered species, endemic to cloud forests in Los Tuxtlas, a mountain range along the Gulf of Mexico coast. This species is only known from the type locality and its surroundings. Here we present new records that extend its distribution approximately 7 km southeast of the type locality and report more specimens near to the type locality. We also identified climatically suitable areas for C.nelsoni using ecological niche modelling and investigated the sampling bias to identify poorly sampled areas in Los Tuxtlas. We suggest that the scarcity of records in other areas with suitable climatic conditions throughout Los Tuxtlas is a consequence of incomplete surveys. We strongly highlight the importance of continuing surveying this critically endangered shrew using more efficient sampling techniques to better understand its current distribution and conservation status. Despite all known localities occurring inside Los Tuxtlas Biosphere Reserve, deforestation and climate change still pose current and future threats to this species.

The Role of Canopy Ants in Removing Ficus perforata Seeds from Howler Monkey (Alouatta palliata mexicana) Feces at Los Tuxtlas, México1

Biotropica ◽  
10.1646/03155 ◽  
2004 ◽  
Vol 36 (3) ◽  
pp. 429
Author(s):  
Rodolfo Martínez-Mota ◽  
Juan Carlos Serio-Silva ◽  
Víctor Rico-Gray
Keyword(s):  
Alouatta Palliata ◽  
Howler Monkey ◽  
Los Tuxtlas ◽  
Alouatta Palliata Mexicana

scholarly journals Interacting effects of forest fragmentation and howler monkey foraging on germination and disperal of fig seeds

Oryx ◽  
2002 ◽  
Vol 36 (3) ◽  
pp. 266-271 ◽  
Author(s):  
Juan Carlos Serio-Silva ◽  
Victor Rico-Gray
Keyword(s):  
Dispersal Distance ◽  
Alouatta Palliata ◽  
Howler Monkey ◽  
Forest Fragment ◽  
Howler Monkeys ◽  
Conservation Policies ◽  
Dispersal Distances ◽  
Alouatta Palliata Mexicana ◽  
Fragmented Forests ◽  
Individual Trees

We studied changes in germination rates and dispersal distance of seeds of Ficus perforata and F. lundelli dispersed by howler monkeys (Alouatta palliata mexicana), in a small (40 ha) ‘disturbed’ and a larger (>600 ha) ‘preserved’ tropical rainforest in southern Veracruz, Mexico. The interaction between A. p. mexicana and Ficus (Urostigma) spp. is beneficial for the interacting species and has important implications for their conservation. Howler monkeys gain from the ingestion of an important food source, germination rates of Ficus seeds are improved by passage through the monkeys' digestive tract, and the seeds are more likely to be deposited in a site suitable for germination and development. Seed dispersal distances are relatively larger in the preserved site, with both the size of the forest area and the spatial pattern of Ficus affecting the dispersal process. In a large forest fragment with ‘regularly’ distributed Ficus individuals the howler monkeys move away from the seed source, increasing the probability that the seeds are desposited on a tree other than Ficus, which is important for the germination and future development of a hemiepiphytic species. In a small forest fragment with trees distributed in clumps howlers repeatedly use the same individual trees, and faeces containing seeds may be dropped on unsuitable trees more often. These are key issues when addressing conservation policies for fragmented forests.

scholarly journals The Influence of Large Tree Density on Howler Monkey (Alouatta palliata mexicana) Presence in Very Small Rain Forest Fragments

Biotropica ◽  
2007 ◽  
Vol 39 (6) ◽  
pp. 760-766 ◽  
Author(s):  
Víctor Arroyo-Rodríguez ◽  
Salvador Mandujano ◽  
Julieta Benítez-Malvido ◽  
Carla Cuende-Fanton
Keyword(s):  
Rain Forest ◽  
Alouatta Palliata ◽  
Tree Density ◽  
Howler Monkey ◽  
Forest Fragments ◽  
Large Tree ◽  
Alouatta Palliata Mexicana

scholarly journals Abnormal pelage color in mantled howler monkey (Alouatta palliata mexicana) in Veracruz, México

2021 ◽  
Vol 2 (1) ◽  
pp. 26-28
Keyword(s):  
Alouatta Palliata ◽  
Howler Monkey ◽  
Mantled Howler ◽  
Pelage Color ◽  
Ad Libitum ◽  
Mantled Howler Monkey ◽  
Alouatta Palliata Mexicana

El leucismo es una despigmentación total o parcial del pelaje, mientras que el albinismo es la pérdida total de pigmentos en el cuerpo entero; las condiciones anormales de la carencia del pigmento se deben a la expresión de genes recesivos.  Se realizó una expedición ad libitum en el Ejido Álvaro Obregón, al suroeste de Nuevo Cantón, municipio de Uxpanapa, Veracruz en diciembre de 2019.  Presentamos el primer registro de un individuo de mono aullador de manto (Alouatta palliata mexicana) con coloración no convencional (probablemente leucismo o albinismo), observado en una tropa silvestre en la región del Valle de Uxpanapa, Veracruz, México.  La coloración de la mucosa oral y palpebral no muestran pigmentación y pueden ser resultado de la expresión de genes recesivos en el individuo, por lo que realizar estudios más profundos sobre la expresión de genes recesivos ampliaría la comprensión del fenómeno.

Dung beetles attracted to mammalian herbivore (Alouatta palliata) and omnivore (Nasua narica) dung in the tropical rain forest of Los Tuxtlas, Mexico

1993 ◽  
Vol 9 (1) ◽  
pp. 45-54 ◽  
Author(s):  
Alejandro Estrada ◽  
Gonzalo Halffter ◽  
Rosamond Coates-Estrada ◽  
Dennis A. Meritt
Keyword(s):  
Rain Forest ◽  
Tropical Rain Forest ◽  
Dung Beetle ◽  
Dung Beetles ◽  
Alouatta Palliata ◽  
Howler Monkey ◽  
Los Tuxtlas ◽  
Nasua Narica ◽  
Ball Rolling ◽  
Species Overlap

ABSTRACTDung beetles attracted to howler monkey (Alouatta palliata) and coati (Nasua narica) dung were studied for an annual cycle in the tropical rain forest of Los Tuxtlas, Mexico. Pitfall traps set for 24 h month−1 captured 1567 dung beetles of 21 species. The species Canlhidium martinto, Deltochilum pseudoparile and Canthon femoralis accounted for 62% of all individuals captured. While species overlap was high (> 80%) between diurnal and nocturnal samples and between howler monkey and coati dung baits, coati dung attracted species such as C. martinezi, D. pseudoparile and Onthophagus rhinolophus while species such as C. femoralis and Copris laeviceps were numerically dominant at howler monkey dung. Thirteen non-ball rolling dung beetle species and eight ball-rolling species accounted for 43% and for 57% of all beetles captured respectively. Dung beetles were present and active in all months of the year, but occurred in higher numbers between the months of March and October, when temperatures were higher. Relative abundance of howler monkey and coati dung in the rain forest of Los Tuxtlas was estimated at 11.2 g (fresh weight) ha−1 day−1 and at 13.0 g ha−1 day−1 respectively, a seemingly low amount for the large number of scarabs attracted to the dung.

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