Caribbean manatee Red Lis Assessment : Trichechus manatus ssp. manatus - Linnaeus, 1758
Periodo de realización: 1900/01/01 al 2021/01/01
Tipo: Artículo científico
Lugar(es) de estudio: Caribbean
Resumen: "We recommend that the Caribbean manatee continues to be listed as Endangered under Criterion C. The estimated population size of mature individuals (2,214 individuals) does not exceed the threshold of the Criteria (< 2,500), and their trend is inferred or suspected to continue declining throughout its distribution range, except for Puerto Rico. However, threats to the population in Puerto Rico continue, and thus the same listing is recommended.
Early evidence of a large-scale decline of the Caribbean manatee population throughout its range was documented by Lefebvre et al. (2001). At that time, the subspecies was reported as severely reduced, rare, or absent in many areas where they were previously present and existed in high numbers (Husar 1978, O´Shea et al. 1988, Morales-Vela et al. 2003, Serrano et al. 2007, Campello et al. 2014). There is no evidence that manatee numbers have increased in any of the countries/regions, except for Puerto Rico (Mignucci-Giannoni et al. 2018, Collazo et al. 2019). In fact, local manatee populations in Haiti and Jamaica are at critical risk of extinction in the coming years if effective urgent action is not implemented. In other countries, the local populations are = 200 manatees (Table 1). Some countries continue reporting a decline of their manatee populations or the status is unknown due to deficient data such as the case of Costa Rica, Dominican Republic, Guatemala, Guyana, Nicaragua, Honduras, Panama, Suriname, Trinidad and Tobago, and Venezuela. Further, the distribution of the Caribbean manatee is highly fragmented, and the lack of connectivity altogether with low reproductive rates have important implications on the population viability. The conservation of coastal areas and migration corridors is necessary for the maintenance of the populations. However, this tool has minimal value if it excludes adequate enforcement, meaningful involvement of local communities, and well-articulated management plans that outline protected area goals, objectives, and benchmarks. Developing countries face tremendous economic and political pressure to maintain and expand their fishing and logging practices as well as coastal development – all of which are known to negatively impact manatees and their habitats."