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Revista de la Academia Colombiana de Ciencias Exactas, Físicas y Naturales
versión impresa ISSN 0370-3908
Resumen
CARVAJAL-FLORIAN, Alexander y GRACIA, Adriana. New records and status of knowledge of marine heterobranchs (Mollusca: Gastropoda) in the department of Atlántico, Colombian Caribbean. Rev. acad. colomb. cienc. exact. fis. nat. [online]. 2022, vol.46, n.179, pp.426-437. Epub 12-Sep-2023. ISSN 0370-3908. https://doi.org/10.18257/raccefyn.1580.
The subclass Heterobranchia is one of the most diverse among gastropod mollusks; it is present in marine, freshwater, and terrestrial environments and includes interstitial slugs, nudibranchs, intertidal limpets, and land snails and slugs. There is no official list of the diversity of marine or terrestrial heterobranchs for the department of Atlántico. The main objective of the study was to contribute to the first inventory of this gastropod group in this marine-coastal area in the Colombian Caribbean characterized by conditions of high sedimentation, turbidity, and resuspension generated by its proximity to the Magdalena River mouth. The information presented in this study was collected during 38 non-regular field trips in several localities between 2017 and 2021 and complemented by an exhaustive literature and database review. We registered a richness of 17 species distributed in nine Department localities. Heterobranchs were recorded only in 11 of the field trips. The results highlight the first record of the genus Oxynoe for the Colombian Caribbean and the second of the genus Carminodoris in Colombia, of which only one report was known from the department of Bolívar. We registered five species for the first time in this area: three members of the family Aplysiidae and one each of the Discodorididae and Oxynoidae families. This information contributes to the knowledge and understanding of an important gastropod group distributed in this coastal Colombian area.
Palabras clave : Check list; Aplysiidae; Discodorididae; Oxynoidae; Richness; High sedimentation.