scholarly journals Low genetic diversity and limited genetic structure across the range of the critically endangered Mexican howler monkey ( Alouatta palliata mexicana )

2020 ◽  
Vol 82 (8) ◽  
Author(s):  
Adrián Melo‐Carrillo ◽  
Jacob C. Dunn ◽  
Liliana Cortés‐Ortiz
Keyword(s):  
Genetic Diversity ◽  
Genetic Structure ◽  
Alouatta Palliata ◽  
Critically Endangered ◽  
Howler Monkey ◽  
Low Genetic Diversity ◽  
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 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.

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

Biotropica ◽  
2004 ◽  
Vol 36 (3) ◽  
pp. 429-432
Author(s):  
Rodolfo Martinez-Mota ◽  
Juan Carlos Serio-Silva ◽  
Victor Rico-Gray
Keyword(s):  
Alouatta Palliata ◽  
Howler Monkey ◽  
Los Tuxtlas ◽  
Alouatta Palliata Mexicana

scholarly journals Pronounced genetic structure and low genetic diversity in European red-billed chough (Pyrrhocorax pyrrhocorax) populations

2012 ◽  
Vol 13 (5) ◽  
pp. 1213-1230 ◽  
Author(s):  
Marius A. Wenzel ◽  
Lucy M. I. Webster ◽  
Guillermo Blanco ◽  
Malcolm D. Burgess ◽  
Christian Kerbiriou ◽  
...  
Keyword(s):  
Genetic Diversity ◽  
Genetic Structure ◽  
Low Genetic Diversity

Long-term survival despite low genetic diversity in the critically endangered Madagascar fish-eagle

2008 ◽  
Author(s):  
JEFF A. JOHNSON ◽  
RUTH E. TINGAY ◽  
MELANIE CULVER ◽  
FRANK HAILER ◽  
MICHÈLE L. CLARKE ◽  
...  
Keyword(s):  
Genetic Diversity ◽  
Critically Endangered ◽  
Term Survival ◽  
Long Term Survival ◽  
Low Genetic Diversity

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.

scholarly journals Clinging to survival: Critically Endangered Chapman's pygmy chameleon Rhampholeon chapmanorum persists in shrinking forest patches

Oryx ◽  
2021 ◽  
pp. 1-6
Author(s):  
Krystal A. Tolley ◽  
Colin R. Tilbury ◽  
Jessica M. da Silva ◽  
Gary Brown ◽  
Yankho Chapeta ◽  
...  
Keyword(s):  
Genetic Diversity ◽  
Gene Flow ◽  
Genetic Structure ◽  
Satellite Imagery ◽  
Critically Endangered ◽  
Forest Loss ◽  
Mitochondrial Marker ◽  
Forest Patches ◽  
Genetic Diversity And Structure ◽  
The Impact

Abstract The Critically Endangered Chapman's pygmy chameleon Rhampholeon chapmanorum is endemic to the low elevation rainforest of the Malawi Hills in southern Malawi. Much of this forest has been converted to agriculture and it was uncertain whether chameleon populations have persisted. We used current and historical satellite imagery to identify remaining forest patches and assess deforestation. We then surveyed forest patches for the presence of this chameleon, and assessed its genetic diversity and structure. We estimated that 80% of the forest has been destroyed since 1984, although we found extant populations of the chameleon in each of the patches surveyed. Differentiation of genetic structure was strong between populations, suggesting that gene flow has been impaired. Genetic diversity was not low, but this could be the result of a temporal lag as well as lack of sensitivity in the mitochondrial marker used. Overall, the impact of forest loss is assumed to have led to a large demographic decline, with forest fragmentation preventing gene flow.

scholarly journals Erratum to: Pronounced genetic structure and low genetic diversity in European red-billed chough (Pyrrhocorax pyrrhocorax) populations

2014 ◽  
Vol 16 (4) ◽  
pp. 1011-1012
Author(s):  
Marius A. Wenzel ◽  
Lucy M. I. Webster ◽  
Guillermo Blanco ◽  
Malcolm D. Burgess ◽  
Christian Kerbiriou ◽  
...  
Keyword(s):  
Genetic Diversity ◽  
Genetic Structure ◽  
Low Genetic Diversity
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