Abstract
Considering the growing threats to the biodiversity of small Caribbean islands (e.g., habitat loss and fragmentation, overexploitation, invasive species, and climate change), it is important to establish biodiversity inventories that serve as baselines for monitoring and evaluation of conservation efforts. In Barbados (West Indies), the most recent comprehensive taxonomic account of brachyuran crabs came from Rathbun (1921) reporting the specimens collected by the University of Iowa Barbados-Antigua Expedition in 1918. The present study fills the 100-year gap in knowledge by providing an updated taxonomic checklist of brachyuran crabs associated with semi-terrestrial and estuarine habitats in Barbados. A total of 245 specimens representing three superfamilies, six families, nine genera, and 13 species were collected over a period of 425 search-hours in twenty-seven sampling locations in semi-terrestrial and estuarine habitats of Barbados between September 2018 and November 2020. The families with the highest numbers of species identified were Gecarcinidae (3) and Portunidae (3), followed by Grapsidae (2), Sesarmidae (2), Ocypodidae (2), and Varunidae (1). The species Armases ricordi (H. Milne Edwards, 1853), Cyclograpsus integer H. Milne Edwards, 1837, and Callinectes sapidus Rathbun, 1896, are recorded here for the first time for Barbados.
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