Abstract
Mesh selectivity is an important factor to be considered when sampling zooplankton. Selectivity may differ according to the environment and taxon, but his has not been evaluated for cnidarians in neritic and/or oceanic ecosystems. In this study, efficiency of plankton nets with two different mesh sizes (120 and 300 μm) were compared to assess the cnidarian assemblage from neritic and oceanic habitats in the equatorial Atlantic Ocean. No statistical differences between meshes were observed in species richness, total and most dominant taxa abundance, or taxonomic and size structure of the community in both oceanic and neritic habitats. Only for the small (0.5–2 mm) neritic Persa incolorata did the meshes differ, with higher abundances in the finer one. Despite small particularities, our results show that the 120 and 300 μm meshes produce similar results.
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