Small boats as vectors of marine invasion: experimental test of velocity and desiccation as limits

Do Morphological Similarities and human-induced dispersal explain the non-native occurrence of Serpulidae (Annelida) in Southwest Atlantic? Taxonomic detailing is the key

“…The use of sheltered harbors worldwide has increased connectivity among biogeographical regions (Clarke et al, 2004;Lopes, 2009;Castro et al, 2017) and greatly contributes to colonisation by several non-native species. Once biogeographical barriers have been overcome, regional or local transportation is considered crucial for further spread of exotic species (Kauano et al, 2017;Pelletier-Rousseau et al, 2019). Only recently has this topic received attention from local legislatures and in international treaties to control the spread of marine species (Clarke et al, 2004;Lopes, 2009;Rocha et al, 2013;Tricarico et al, 2016;Castro et al, 2017).…”

An overview of recent research in marine biological invasions

“…The authors found that propagule pressure varied by transport pathway, and that ballast water exchange was not sufficient to reduce ballast-mediated invasion risk in marine and coastal habitats. Three studies evaluating the importance of ship biofouling as a vector for the introduction and spread of marine NIS reported mixed results (Chan et al 2016 ; Kauano et al 2017 ; van der Gaag et al 2016 ). The first study examining temporal changes in biofouling assemblages on military vessels during transits in the marine Arctic recorded six potential NIS capable of surviving round trip voyages from temperate to arctic ports in Canada (Chan et al 2016 ).…”

“…The first study examining temporal changes in biofouling assemblages on military vessels during transits in the marine Arctic recorded six potential NIS capable of surviving round trip voyages from temperate to arctic ports in Canada (Chan et al 2016 ). Similarly, an experimental study found that the sailing speed and desiccation time typical of small fishing and recreation boats in southern Brazil had little effect on the survivorship of biofouling organisms (Kauano et al 2017 ). In contrast, results from mesocosm experiments indicate that the nonindigenous mussels Dreissena polymorpha and Mytilopsis leucophaeata and the native mussel Mytilus edulis would not be capable of tolerating unfavourable salinity levels for durations typical of actual ship voyages in the North Sea (van der Gaag et al 2016 ).…”

First record of Salacia tetracythara Lamouroux, 1816 (Hydrozoa, Sertulariidae) as an alien hydroid for the Atlantic Ocean

“…They can colonize and develop on different types of substrates (González-Duarte et al, 2014) and have high dispersive potential. Pelagic dispersal is not only performed by the medusa and/ or planula stages of the life cycle, but also by the presence of tolerant or resistant stages (frustules) released from colonies, autotomy of hydranths, as well as rafting of colonies on floating structures (Boero, 2002;Haydar, 2012). As a result, these organisms are among the groups with the highest number of species transported and introduced by human actions (Haydar, 2012).…”