Glucocorticoid levels in free ranging resident mantled howlers: a study of coping strategies

Article Abstract:

The relationship between coping strategies and the activation of the hypothalamic-pituitary-adrenal (HPA) axis in males and females of mantled howlers are studied. Results suggest that behavioral responses are associated with distinct hormonal responses with females responding passively with the activation of the HPA axis, whereas males respond aggressively with no changes in the activation of the HPA axis.

Sexual behavior, Hypothalamic-pituitary-adrenal axis, Clinical report

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Biogeographical and floristic predictors of the presence and abundance of mantled howlers (alouatta palliata mexicana) in rainforest fragments at Los Tuxtlas, Mexico

Article Abstract:

The principal habitat characteristics that influence the presence and abundance of mantled howlers in forest fragments are identified. It suggests that the conditions, under which the howlers live, increase or decrease in vegetation depending on the population density, play an important role in its survival.

Wilderness survival, Habitat selection

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Demography, life history and migrations in a Mexican mantled howler group in a rainforest fragment

Article Abstract:

Results of a long-term study on how a group of Mexican mantled howlers in rainforest fragments are affected by and respond to habitat disturbance is presented. The group studied doubled over the study period due to the high quality diet, the initial small size of the group, and low risk of howler predation.

Food and nutrition, Animal migration

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