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Master Thesis

Assessment of a Yucatan black howler monkey population reintroduction

Abstract : The reintroduced howler monkey population was assessed to determine the current status of the released howler monkeys and of their reintroduction. Criteria were defined to assess the status of each individual such as health condition, reproduction, troop cohesion and establishment, and response to human presence. A demographic study was conducted to characterize the population to date, and studies on their home range establishment, on the survival and on the identification of feed species were done to increase the success of future releases and to find new release locations. The current status of the population reintroduction was assessed successfully and base-lines were given for the future releases. 75% of the released howler monkeys were found and located after at least one year since release in good condition, and only one of the missing monkeys was found dead. 76% of the released monkeys have established a home range, 71% have stable troops, 24% of the population has started reproducing successfully, and 95% of the monkeys found reached sexual maturity. Intervention by the Rehabilitation Centre will be needed for only one troop of three monkeys that were recorded on the ground and attracted by the presence of people. This study showed an example of a successful population reintroduction, and the need of doing long term post-release monitoring to assess the success of releases. As the re-establishment of a viable population implies the successful reproduction of offspring, further assessments will be needed to evaluate reproduction rates.
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Master Thesis
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https://dumas.ccsd.cnrs.fr/dumas-01219304
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Submitted on : Thursday, October 22, 2015 - 2:03:19 PM
Last modification on : Monday, July 6, 2020 - 3:38:21 PM
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  • HAL Id : dumas-01219304, version 1

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Fanny Tricone. Assessment of a Yucatan black howler monkey population reintroduction. Agricultural sciences. 2015. ⟨dumas-01219304⟩

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