Invasion
Invasion Description
1st Record: Santa Catarina/Brazil/Zimbros Bay (1961, Young 2000)
Geographic Extent
Santa Catarina/Brazil/Zimbros Bay (1961, Young 2000); Rio de Janeiro State/Brazil/Rio das Ostras (Young 1994); Niteroi, Rio de Janeiro State/Brazil/Atlantic Ocean (Young 1994); Rio de Janeiro/Brazil/Guanabara Bay (Young 1994); Ponta Sernambetiba, Rio de Janeiro/Brazil/Atlantic Ocean (USNM 244016, 243268, 1970, Henry and McLaughlin 1986, US National Museum of Natural History 2002); Mangaritiba/Brazil/Atlantic Ocean (Young 1994); Angra dos Reis/Brazil/Atlantic Ocean (Young 1994); Ubatuba/Brazil/Atlantic Ocean (Young 1994); Sao Sebastao/Brazil/Atlantic Ocean (Young 1994); Guaruja/Brazil/Atlantic Ocean (Young 1994); Santos/Brazil/Atlantic Ocean (Young 1994); Iguape/Brazil/Atlantic Ocean (Young 1994); Paranagua/Brazil/Atlantic Ocean (Young 1994; Rocha et al. 2010); off Parana/Brazil/Atlantic Ocean (2009, Bumbeer and da Rocha 2012, 25°44’S, 48º20’W); Caioba/Brazil/Atlantic Ocean (Young 1994); SanoFrancisco/Brazil/Atlantic Ocean (Young 1994); Penha/Brazil/Atlantic Ocean (Young 1994); Itajia/Brazil/Atlantic Ocean (Young 1994); Itapema/Brazil/Atlantic Ocean (Young 1994); Gouvenador Celso Ramos/Brazil/Atlantic Ocean (Young 1994); Florianopolis/Brazil/Atlantic Ocean (Young 1994); Garopaba/Brazil/Atlantic Ocean (Young 1994); Laguna/Brazil/Atlantic Ocean (Young 1994); Torres/Brazil/Atlantic Ocean (Young 1994); Capao de Canoa/Brazil/Atlantic Ocean (Young 1994); Tramandai/Brazil/Atlantic Ocean (Young 1994); Rio Grande/Brazil/Atlantic Ocean (Young 1994); Sao Paulo State/Brazil/São Sebastião Channel (Marques et al. 2013); Ilhabela to Niteroi/Brazil/Atlantic Ocean (2016, Oriccio et al. 2019, marina survey); Rio de Janeira-Rio Grande do Sul/Brazil/Atlanitc Ocean (1961, Teixeira and Creed 2020)
Vectors
| Level | Vector |
|---|---|
| Alternate | Hull Fouling |
| Alternate | Ballast Water |
Regional Impacts
| Economic Impact | Fisheries | |
| Barnacles, dominated by M. coccopoma, foul ropes used in mussel culture in Itapocoroy Bay (Santa Catarina, Brazil). The ropes sometimes break from the weight of attached barnacles (Severino and Resgalla 2005). Didemnum perlucidum was common but not dominant in mussel farms in southern Brazil. It does overgrow mussels, so could 'be damaging to the bivalve industry' (da Rocha et al. 2010). In later studies, ,emM. coccopoma was found to affect the growth of cultured mussels, delaying or preventing their growth to marketable size. Monthly cleaning of the mussels and the culture 'socks' improved the growth of the mussels, but damaged small mussels, but increased labor costs, (Lins and Rocha 2020). | ||
| Ecological Impact | Competition | |
| Megabalanus coccopoma appears to have largely replaced populations of M. tintinnabulum, reported in the 1920s-1940s (Young 1994). | ||