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Report on the presence of a group of golden-headed lion tamarins (Leontopithecus chrysomelas), an endangered primate species in a rubber plantation in southern Bahia, Brazil.

ABSTRACT: In a landscape fragmented by agriculture, the extent to which forest-dwelling primates can use the matrix between fragments can be critical for their long-term survival. So far, the golden-headed lion tamarin (Leontopithecus chrysomelas), an endangered primate inhabiting the Atlantic Forest of south Bahia, is only known to use shaded cacao (Theobroma cacao) agroforests within the matrix. We report on the use of a rubber plantation by a group of golden-headed lion tamarins between August 2013 and January 2014. The group used the rubber plantation on 16 of the 22 observation days (73 %), and we recorded behaviours such as eating, grooming and sleeping, consistent with the use of the area as a home range. We also observed associations with Wied's marmosets (Callithrix kuhlii). The locations of group sightings were not uniformly spread across the entire area of the rubber plantation, suggesting preferred use of certain areas. The presence of resources such as jackfruits (Artocarpus heterophyllus) and epiphytic bromeliads may be attracting both species to these plantations. In addition to shaded cacao plantations, rubber plantations with the appropriate structure may be a viable option for increasing forest connectivity for both species in south Bahia, reconciling economic rubber production with primate conservation.

SUBMITTER: De Vleeschouwer KM

PROVIDER: S-EPMC8137856 | biostudies-literature |

REPOSITORIES: biostudies-literature

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Project description:The African lion has declined to <35,000 individuals occupying 25% of its historic range. The situation is most critical for the geographically isolated populations in West Africa, where the species is considered regionally endangered. Elevating their conservation significance, recent molecular studies establish the genetic distinctiveness of West and Central African lions from other extant African populations. Interventions to save West African lions are urgently required. However formulating effective conservation strategies has been hampered by a lack of data on the species' current distribution, status, and potential management deficiencies of protected areas (PAs) harboring lions. Our study synthesized available expert opinion and field data to close this knowledge gap, and formulate recommendations for the conservation of West African lions. We undertook lion surveys in 13 large (>500 km²) PAs and compiled evidence of lion presence/absence for a further eight PAs. All PAs were situated within Lion Conservation Units, geographical units designated as priority lion areas by wildlife experts at a regional lion conservation workshop in 2005. Lions were confirmed in only 4 PAs, and our results suggest that only 406 (273-605) lions remain in West Africa, representing <250 mature individuals. Confirmed lion range is estimated at 49,000 km², or 1.1% of historical range in West Africa. PAs retaining lions were larger than PAs without lions and had significantly higher management budgets. We encourage revision of lion taxonomy, to recognize the genetic distinctiveness of West African lions and highlight their potentially unique conservation value. Further, we call for listing of the lion as critically endangered in West Africa, under criterion C2a(ii) for populations with <250 mature individuals. Finally, considering the relative poverty of lion range states in West Africa, we call for urgent mobilization of investment from the international community to assist range states to increase management effectiveness of PAs retaining lions.

Dataset Information

Report on the presence of a group of golden-headed lion tamarins (Leontopithecus chrysomelas), an endangered primate species in a rubber plantation in southern Bahia, Brazil.

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