"Abundance, Distribution, and Troop Composition of the Black Howler Monkey (Alouatta Pigra) in Different Forest Remnants in the Lachuá Ecoregion"
DOI:
https://doi.org/10.54495/Rev.Cientifica.v17i1.225Keywords:
Alouatta pigra, black howler monkey, fragmentation, forest remnants, Laguna Lachuá National Park-PNLL-, cosmovision, representation, forest corridorsAbstract
This research analyzes the distribution, abundance and troop composition of the black howler monkey, Alouatta pigra, in the Lachuá ecoregion. The forest remnants where located the monkeys varied in terms of size, type of vegetation cover and isolation distance between each of them the same. In addition, the effect of the "representation" of the inhabitants of the communities with respect to the howler monkey was considered black in the abundance and distribution of these primates.
In a total of L067 hours of searching, 414 individuals were observed, of which 403 (97%) formed 80 troops and 11 (3%) formed extra-troop groups, solitary individuals and one adult female mantled howler monkey, A. palliata, which was part of a troop of A. pigra. It was observed that habitat fragmentation modifies the potential habitat that black howler monkeys can use by limiting the distribution of individuals to the few remnants of forest that persist in the area of influence and to the LLNP. Such remnants are frequently isolated. A greater number of individuals and troops were detected in the patches near the hills, which
It is possibly related to a greater abundance of the ramón tree (Brossimum spp.) near archaeological sites in the area. In addition, an abundance of tamarind (Dialium guianense) and amate (Ficus spp.) food trees was observed in that area.
The average number of troops in the patches (forested areas less than 4 km2) was 5.19 (±1.97 with a range of 1 1 to 2 individuals), in the hills (area of 18.09 km2) it was 5.35 (±1.70 with a range of 8 to 3) and in the PNLL (area of 31.74 km2) it was 3.89 (±1.33 with a range of 6 to 3). The average of the relative population density indices was 13.01 ind/km2 in the patches and 6.8 ind/km2 in the hills.
The ecological relative density index in the PNLL was 1.8 and in the patches a range of 1.04 to 700.67 ind/km2 was observed. The composition of the total troops detected (N=80) is as follows: 34% adult male individuals (N=136), 35% adult females (N=142), 6% juvenile males (n=24), 9% juvenile females (N=34), 1% unsexed juveniles (N=5), and 15% infants (N=62). The proportion of adult male individuals was higher in areas with lower density (hills) and a high tendency to polygamous and unimale troops was observed. The number of individuals of A. pigra detected was higher in remnants with forest vegetation cover and in patches that were not very isolated (from 81 to 262 m away).
Downloads
References
.
Downloads
Published
How to Cite
Issue
Section
License
Copyright (c) 2004 M.M. Rosales, A. Estrada, J.E. López
This work is licensed under a Creative Commons Attribution 4.0 International License.
Authors who publish with this journal agree to the following terms:
- Authors retain copyright and grant the journal right of first publication with the work simultaneously licensed under a Creative Commons Attribution License 4.0 that allows others to share the work with an acknowledgement of the work's authorship and initial publication in this journal.
- Authors are able to enter into separate, additional contractual arrangements for the non-exclusive distribution of the journal's published version of the work (e.g., post it to an institutional repository or publish it in a book), with an acknowledgement of its initial publication in this journal.
- Authors are permitted and encouraged to post their work online (e.g., in institutional repositories or on their website) prior to and during the submission process, as it can lead to productive exchanges, as well as earlier and greater citation of published work.
