Timing of births in sympatric brown howler monkeys (Alouatta fusca clamitans) and northern muriquis (Brachyteles arachnoides hypoxanthus)

2001 ◽  
Vol 55 (2) ◽  
pp. 87-100 ◽  
Author(s):  
Karen B. Strier ◽  
Sergio L. Mendes ◽  
Rogerio R. Santos
Keyword(s):  
Howler Monkeys ◽  
Brachyteles Arachnoides ◽  
Timing Of Births ◽  
Brachyteles Arachnoides Hypoxanthus

Adult male-infant interactions in wild muriquis (Brachyteles arachnoides hypoxanthus)

Primates ◽  
2001 ◽  
Vol 42 (4) ◽  
pp. 395-399 ◽  
Author(s):  
Vanessa da Oliveira Guimarães ◽  
Karen B. Strier
Keyword(s):  
Adult Male ◽  
Male Infant ◽  
Brachyteles Arachnoides ◽  
Brachyteles Arachnoides Hypoxanthus

Social dynamics of male muriquis (Brachyteles arachnoides hypoxanthus)

Behaviour ◽  
2002 ◽  
Vol 139 (2) ◽  
pp. 315-342 ◽  
Author(s):  
Laiena Dib ◽  
José Figueira ◽  
Karen Strier
Keyword(s):  
Social Dynamics ◽  
Brachyteles Arachnoides ◽  
Brachyteles Arachnoides Hypoxanthus

scholarly journals Vocal sequential exchanges and intragroup spacing in the Northern Muriqui Brachyteles arachnoides hypoxanthus

2004 ◽  
Vol 76 (2) ◽  
pp. 399-404 ◽  
Author(s):  
Francisco D.C. Mendes ◽  
César Ades
Keyword(s):  
Long Range ◽  
Short Range ◽  
Minas Gerais ◽  
Biological Station ◽  
Brachyteles Arachnoides ◽  
The Poor ◽  
Minas Gerais State ◽  
Brachyteles Arachnoides Hypoxanthus

Sequential exchanges of vocalizations (staccatos and neighs) emitted by Northern Muriquis Brachyteles arachnoides hypoxanthus were recorded at the Biological Station of Caratinga, Minas Gerais State, Brazil. Staccatos and neighs containing larger proportion of short elements were preferentially produced during short-range exchanges; neighs, produced by a larger number of participants, were typical of long-range exchanges. Staccatos emitted by animals feeding in a dispersed manner contained a larger proportion of tonal elements than those emitted by muriquis feeding in a cohesive manner. Sequential exchanges seem thus to be constituted by two inter-related subsystems of calls that aid muriquis to coordinate intragroup spacing, despite the poor visibility of the habitat.

Effects of two dietary fiber levels on nutrient digestibility and intestinal fermentation products in captive brown howler monkeys ( Alouatta guariba )

2021 ◽  
Vol 83 (3) ◽  
Author(s):  
Lucas Carneiro ◽  
Tatiane B. Moreno ◽  
Barbara D. Fernandes ◽  
Camilla M. M. Souza ◽  
Tais S. Bastos ◽  
...  
Keyword(s):  
Dietary Fiber ◽  
Nutrient Digestibility ◽  
Howler Monkeys ◽  
Fermentation Products

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.

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