Genetic Diversity and Insights into the Distribution of Brown Howler Monkeys (Alouatta guariba Group) (Atelidae, Alouattinae)

Povill, Cintia; Oliveira, Marcione Brito de; Abreu, Filipe Vieira Santos de; Oliveira, Ricardo Lourenço de; Perini, Fernando A.; Monticelli, Cauê; Bueno, Cecília; Santos, Edmilson dos; Pissinatti, Alcides; Bonvicino, Cibele Rodrigues

doi:10.1007/s10764-023-00352-z

Cited by 3 publications

(1 citation statement)

References 76 publications

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“…However, more recent analyzes suggest that at least one population analyzed in Paranánear the province of Misiones (Argentina) belongs to the cluster 1. These data, together with a review of previous work on the taxonomy and phylogeography of the species (Rylands et al, 2000;Gregorin, 2006;Povill et al, 2023) are about to be published in an article where updated MU are proposed (Oklander et al, in prep).…”

Section: Binational Actions and Integration Processmentioning

confidence: 99%

Restoration of Alouatta guariba populations: building a binational management strategy for the conservation of the endangered brown howler monkey of the Atlantic Forest

Oklander,

Rheingantz,

Rossato

et al. 2024

Front. Conserv. Sci.

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The brown howler monkey (Alouatta guariba) is endemic to the Atlantic Forest of eastern Brazil and northeastern Argentina, threatened by extinction due to habitat loss and fragmentation, and hunting. Its reduced and isolated populations dramatically decreased and suffered local extinctions after recent yellow fever outbreaks, recommending the species risk uplist from Vulnerable to Endangered. In Brazil, the species occurs along eight states in sparse populations, including some large protected areas, and is being uplisted to Endangered. Following the National Action Plan for Conservation of the Atlantic Forest Primates and the Maned-sloth, and applying the Guidelines for Reintroductions and other Conservation Translocations (IUCN/CTSG), the Ex Situ Guidelines (IUCN/CPSG) and the One Plan Approach (IUCN/CPSG), a workshop was held on August 2021 to evaluate the need, requisites and roles of an integrated Population Management Program for A. guariba. Such program was developed in June 2022 defining the objectives of (i) restore in situ populations from ex situ populations, prioritizing populations in higher risk to prevent local extinctions, and (ii) establish an ex situ insurance population. This in situ – ex situ integrated management program was approved by ICMBio in February 2023, with actions recommended for all states along the species distribution. In Argentina, the species is Critically Endangered, with a remaining population of 20-50 individuals. Following the National Plan for Primate Conservation in Argentina, in a process similar to that in Brazil, two workshops were held in 2022/2023 to evaluate and define management actions for the long-term recovery of A. guariba. The priorities indicated were (i) reintroduction in ten potential areas in Misiones – due to a lower risk when compared to reinforcement of remaining populations, and (ii) establishing an ex situ management program in Argentina – still non-existent. The progressive collaboration between the initiatives of both countries is promoting the exchange of experiences and the integration of strategies. Here we summarize the planning and management carried out in Brazil and Argentina, highlighting the need for integrated measures. We debate on the progress and challenges, proposing next steps for developing and implementing a binational population management program for the conservation of the brown howler monkey.

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Section: Binational Actions and Integration Processmentioning

confidence: 99%

Restoration of Alouatta guariba populations: building a binational management strategy for the conservation of the endangered brown howler monkey of the Atlantic Forest

Oklander,

Rheingantz,

Rossato

et al. 2024

Front. Conserv. Sci.

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Growth and allometric curves of southern brown howler monkey (Alouatta guariba): Insights on its ontogeny and conservation

Mariotto,

Dada,

Campos da Silva

et al. 2024

American J Primatol

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Ontogenetic sexual dimorphism is observed in different primate species, with ecological and evolutionary relationships explaining this pattern. Understanding the growth of the southern brown howler monkey elucidates not only the ecology and evolution but also contributes to conservation projects for this species. Throughout 20 years of the Centro de Pesquisas Biológicas de Indaial—Projeto Bugio, Brazil, we collected morphological data on 105 howlers of the Alouatta guariba species to identify the growth differences between ontogenetic categories and sexes and generate a growth curve to estimate the age of rescued individuals. Linear measurements were employed to obtain body length as well as the dimensions of the head and limbs. All individuals were also weighed to obtain body mass. We assessed growth rate and duration using allometric analysis based on the individuals' ages. We compared growth rate and duration among infant, juvenile, and adult howlers and between sexes. We provide growth curves for body size for both sexes using the Von Bertalanffy model. Infants have accelerated growth rate in comparison to the juveniles and adults, with no differences between sexes in establishing body length at this ontogenetic stage. Males have a prolonged development duration from the juvenile stage, reaching adulthood later than females, which explains the body length differences found in this species. Variables of head and limbs analyzed also showed differences in growth rate and duration, but not so consistently among ontogenetic stages. Mass was not a good variable to understand the growth differences of the animals, since many arrived feeble in the project and may have lost mass due to different circumstances in old age. Therefore, growth curves were obtained only for body length, allowing the estimation of the age of these animals when rescued from the wild to more effectively provide needed care in captivity.

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Mitochondrial DNA and karyotype data reveal new records of Alouatta sara Elliot, 1910 (Atelidae, Alouattinae) in the Western Amazon, Brazil

Povill,

Ribeiro,

do Carmo

et al. 2023

Mammalia

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Alouatta is composed of groups of species of which the Amazonian Alouatta seniculus group is part. The number of species in this group is not consensus, some authors considered as species some taxa previously considered as subspecies of A. seniculus: A. seniculus, Alouatta sara, Alouatta s. puruensis, Alouatta s. juara, and Alouatta arctoidea. In order to investigate the genetic diversity of Alouatta in the Purus River basin, we examined the karyotypes of individuals from this region and conducted analyses using Cytochrome b sequences, which yielded valuable information on species diversity and revealed the presence of A. sara in western Brazil, expanding its known distribution range.

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Genetic Diversity and Insights into the Distribution of Brown Howler Monkeys (Alouatta guariba Group) (Atelidae, Alouattinae)

Cited by 3 publications

References 76 publications

Restoration of Alouatta guariba populations: building a binational management strategy for the conservation of the endangered brown howler monkey of the Atlantic Forest

Restoration of Alouatta guariba populations: building a binational management strategy for the conservation of the endangered brown howler monkey of the Atlantic Forest

Growth and allometric curves of southern brown howler monkey (Alouatta guariba): Insights on its ontogeny and conservation

Mitochondrial DNA and karyotype data reveal new records of Alouatta sara Elliot, 1910 (Atelidae, Alouattinae) in the Western Amazon, Brazil

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