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Depth and density distribution of the invasive vermetid Eualetes tulipa (Rousseau in Chenu, 1843) in the southwestern tropical Atlantic
Skinner, L.F.; de Albuquerque Tenório, A.; Penhar, F.L.; Carvalho Soares, D. (2019). Depth and density distribution of the invasive vermetid Eualetes tulipa (Rousseau in Chenu, 1843) in the southwestern tropical Atlantic. Bioinvasions Records 8(1): 65-79
In: Bioinvasions Records. Regional Euro-Asian Biological Invasions Centre (REABIC): Helsinki. ISSN 2242-1300; e-ISSN 2242-1300
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| Trefwoorden |
Gastropoda [WoRMS]
Marien/Kust |
| Author keywords |
early detection; Cabo Frio; marine protected areas; harbour activities; invasive gastropods; depth distribution |
| Auteurs | | Top |
- Skinner, L.F.
- de Albuquerque Tenório, A.
- Penhar, F.L.
- Carvalho Soares, D.
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| Abstract |
Vermetid gastropods are geologically useful as sea-level and palaeoclimatic indicators, and are known as bioengineering species that contribute to biological diversity. Vermetids are adapted to a sessile lifestyle but can sometimes be transported to distant regions and become non-indigenous and/or invasive species. Eualetes tulipa is considered invasive in Hawaii and Venezuela, and we detected it in 2009, inside Forno Harbour (22º58′22.39″S; 42º00′49.44″W) at Arraial do Cabo, Brazil in the southwestern Atlantic. Site surveys were performed at four depths to determine their occurrence, depth distribution, and size structures, including natural and artificial substrates. A total of 494 individuals of E. tulipa were recorded in the three sites investigated, with the highest population densities found on artificial substrates (breakwater) inside the harbour (1.5 ind m-2) and at the greatest depth (4.0 ind m-2). Their size structures indicated recent introduction, with the species spreading in the Arraial do Cabo region over natural and artificial substrates. |
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