| exploring immature-to-mother social distances in mexican mantled howler monkeys at los tuxtlas, mexico. | we analyzed immature-to-mother social distance (juveniles and non-nursing infants) in two mexican mantled howler monkey (alouatta palliata) troops inhabiting a tropical rainforest fragment (40 ha) at los tuxtlas, veracruz, mexico. during july and august of 2000 and 2001 we applied an instantaneous sampling method (317 hr) to record the behaviors of the immatures and their mothers, as well as distances (ordinal scale) between immatures and their mothers (imd), and between immatures and nonmother ... | 2007 | 17154388 |
| preliminary evidence of accumulation of stress during translocation in mantled howlers. | translocation--an extensively used conservation tool--is a potentially stressful event, as animals are exposed to multiple stressors and cannot predict or control the changes in their environment. therefore, it may be expected that during a translocation program stress accumulates and social behavior changes. here, we present data from a translocation of four adult mantled howlers (alouatta palliata), which was conducted in southern veracruz (mexico). we found that stress (measured in fecal cort ... | 2010 | 20653006 |
| resistance to antibiotics of clinical relevance in the fecal microbiota of mexican wildlife. | there are a growing number of reports of antibiotic resistance (atbr) in bacteria living in wildlife. this is a cause for concern as atbr in wildlife represents a potential public health threat. however, little is known about the factors that might determine the presence, abundance and dispersion of atbr bacteria in wildlife. here, we used culture and molecular methods to assess atbr in bacteria in fecal samples from howler monkeys (alouatta palliata), spider monkeys (ateles geoffroyi), tapirs ( ... | 2014 | 25233089 |
| the effect of energetic and psychosocial stressors on glucocorticoids in mantled howler monkeys (alouatta palliata). | the proximate causes of variation in glucocorticoids (gcs) of many free-ranging primates are still unclear, and in some cases, the available evidence is contradictory. such is the case of mantled howler monkeys. in the present study, we tested whether variation in gc levels in this species could be predicted by energetic challenges or by psychosocial stressors. we focused on two groups living in los tuxtlas (veracruz, mexico) that differed in a number of parameters including: group size, habitat ... | 2014 | 24282141 |