scholarly journals Successional loss of two key food tree species best explains decline in group size of Panamanian howler monkeys ( Alouatta palliata )

Biotropica ◽  
2019 ◽  
Vol 51 (4) ◽  
pp. 600-614 ◽  
Author(s):  
Katharine Milton ◽  
David W. Armitage ◽  
Wayne P. Sousa
Keyword(s):  
Group Size ◽  
Tree Species ◽  
Alouatta Palliata ◽  
Howler Monkeys

The role of Ficus (Moraceae) in the diet and nutrition of a troop of Mexican howler monkeys, Alouatta palliata mexicana, released on an island in southern Veracruz, Mexico

2002 ◽  
Vol 18 (6) ◽  
pp. 913-928 ◽  
Author(s):  
Juan Carlos Serio-Silva ◽  
Victor Rico-Gray ◽  
Laura Teresa Hernández-Salazar ◽  
Rene Espinosa-Gómez
Keyword(s):  
Tree Species ◽  
Energy Content ◽  
Food Selection ◽  
Alouatta Palliata ◽  
Feeding Time ◽  
Important Food ◽  
Howler Monkeys ◽  
Food Species ◽  
Alouatta Palliata Mexicana ◽  
Fig Trees

We analysed the selection of tree species consumed by an isolated troop of Mexican howler monkeys (Alouatta palliata mexicana) released in a translocation programme on Agaltepec Island, in Catemaco Lake, Veracruz, Mexico. During November 1989–December 1996, howlers used 36 of the 63 tree species present on the island as food. Selection ratios indicated that six Ficus species (particularly F. pertusa) were among the seven most important food species. Data on time spent feeding showed that the six Ficus species were among the eight most important food species for the monkeys. Howlers spent 64.2% of their feeding time on Ficus products with F. pertusa being consumed significantly more often than foods from other Ficus species. However, monkeys fed on only one third of the 81 adult Ficus trees on the island. No significant differences were found in various food constituents (water, ash, fibre, protein, carbohydrates, lipids) of the six Ficus and two other abundant species in the habitat, whether across species, plant parts (young leaves, mature leaves, fruits), or between seasons (wet, dry). Monkeys consumed Ficus fruits rather the leaves. Fruits showed a much higher energy content per g dry weight than leaves. We also estimated the average daily biomass of leaves and fruits of Ficus spp. consumed by howlers and their energetic contribution to the daily diet of these monkeys. We suggest that some of these tendencies to frugivory reflect the abundance of Ficus trees within the home ranges of the howlers; when few fig trees are present, folivory is the dominant tendency, whereas when many fig trees are present, frugivory is dominant.

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 effect of energetic and psychosocial stressors on glucocorticoids in mantled howler monkeys (Alouatta palliata)

2013 ◽  
Vol 76 (4) ◽  
pp. 362-373 ◽  
Author(s):  
Erendira Gómez-Espinosa ◽  
Ariadna Rangel-Negrín ◽  
Roberto Chavira ◽  
Domingo Canales-Espinosa ◽  
Pedro Américo D. Dias
Keyword(s):  
Alouatta Palliata ◽  
Psychosocial Stressors ◽  
Howler Monkeys ◽  
Mantled Howler ◽  
Mantled Howler Monkeys

The demography of Howler Monkeys (Alouatta palliata) on Barro Colorado Island, Panamá

1981 ◽  
Vol 2 (3) ◽  
pp. 207-236 ◽  
Author(s):  
J. W. Froehlich ◽  
R. W. Thorington ◽  
J. S. Otis
Keyword(s):  
Alouatta Palliata ◽  
Barro Colorado Island ◽  
Howler Monkeys

Does home range use explain the relationship between group size and parasitism? A test with two sympatric species of howler monkeys

Primates ◽  
2011 ◽  
Vol 52 (3) ◽  
pp. 211-216 ◽  
Author(s):  
Milagros González-Hernández ◽  
Pedro Américo D. Dias ◽  
Dora Romero-Salas ◽  
Domingo Canales-Espinosa
Keyword(s):  
Home Range ◽  
Group Size ◽  
Sympatric Species ◽  
Howler Monkeys ◽  
Range Use ◽  
Home Range Use ◽  
The Relationship

scholarly journals Clarifying the Cryptic Host Specificity of Blastocystis spp. Isolates from Alouatta palliata and A. pigra Howler Monkeys

PLoS ONE ◽  
2017 ◽  
Vol 12 (1) ◽  
pp. e0169637 ◽  
Author(s):  
Claudia Villanueva-Garcia ◽  
Elias Jose Gordillo-Chavez ◽  
Eduardo Lopez-Escamilla ◽  
Emilio Rendon-Franco ◽  
Claudia Irais Muñoz-Garcia ◽  
...  
Keyword(s):  
Host Specificity ◽  
Alouatta Palliata ◽  
Howler Monkeys ◽  
Blastocystis Spp

Sex differences in leadership during group movement in mantled howler monkeys ( Alouatta palliata )

2020 ◽  
Vol 82 (2) ◽  
Author(s):  
Enrico Ceccarelli ◽  
Ariadna Rangel Negrín ◽  
Alejandro Coyohua‐Fuentes ◽  
Domingo Canales‐Espinosa ◽  
Pedro Américo D. Dias
Keyword(s):  
Sex Differences ◽  
Alouatta Palliata ◽  
Howler Monkeys ◽  
Group Movement ◽  
Mantled Howler ◽  
Mantled Howler Monkeys
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