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Wide tolerance to environmental conditions and substrate colonization mediates the invasion of false mussels (Bivalvia: Dreissenidae) in brackish systems

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Abstract

False mussels are recognized as the brackish water equivalent of zebra mussels, although the abiotic and habitat conditions that mediate these invaders’ success are barely known. In this context, we aimed to evaluate the native and non-native geographical distribution of Mytilopsis species worldwide and assess biological traits, environmental condition, and habitat associated with false mussels in native and invaded systems. Our hypothesis is that Mytilopsis invasion is driven by species tolerance to environmental conditions and substrate use in brackish systems, where the colonization of non-native populations is favored by great availability of artificial substrates and tolerance to wide ranges of environmental conditions. In addition, this study provides the range and distribution patterns of Mytilopsis species within their introduced and native areas and documents the spread of introduced populations worldwide. Considering the five species evaluated, M. leucophaeata and M. sallei are the most widespread, while M. adamsi, M. trautwineana, and M. africana showed more restricted geographic distribution. In the last decades, M. leucophaeata and M. sallei consolidated and expanded their distributions. Environmental conditions were significantly different between native and non-native areas, where Mytilopsis populations presented significantly higher densities. Non-native populations exhibited remarkable plasticity concerning habitat colonization that was more frequent on artificial substrata. Mytilopsis populations presented significant differences in their biological traits, habitat environmental conditions, and substrate use between native and non-native areas. These species seem to adapt to the conditions of invaded systems, changing their preferences, which may reflect plasticity and a potential shift of their realized niches.

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All the data used in the manuscript are available as supplementary material (S1 and S2).

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Acknowledgements

This study was financially supported by the Foundation Carlos Chagas Filho Research Support of the State of Rio de Janeiro (FAPERJ) through Research Grants attributed to LNS (E-26/202.840/2015; E-26/202.755/2018), ICM (E-26/201.347/2021), and RAFN (E-26/201.283/2021); and by The Brazilian National Council for Scientific and Technological Development (CNPq) through Research Grants attributed to LNS (312194/2015-3; 314379/2018-5). Authors are grateful for scholarships from CAPES (A.J.S. Rodrigues & N. Rodrigues); this study was financed in part by the Coordenação de Aperfeiçoamento de Pessoal de Nível Superior – Brasil (CAPES) – Finance Code 001.

Funding

This study was financially supported by the Foundation Carlos Chagas Filho Research Support of the State of Rio de Janeiro (FAPERJ) through Research Grants attributed to LNS (E-26/202.840/2015; E-26/202.755/2018), ICM (E-26/201.347/2021), and RAFN (E-26/201.283/2021) and by The Brazilian National Council for Scientific and Technological Development (CNPq) through Research Grants attributed to LNS (312194/2015–3; 314379/2018–5). This study was partially financed by the Coordenação de Aperfeiçoamento de Pessoal de Nível Superior – Brasil (CAPES) – Finance Code 001 (A.J.S. Rodrigues & N. Rodrigues).

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Manuscript conceptualization—ICM; LNS; RAFN, Data acquisition—AJSR; ICM; NR; DR; LNS; RAFN, Data analysis—LNS, Manuscript writing—AJSR; ICM; NR; DR; RAFN, Manuscript revision—AJSR; ICM; LNS; RAFN.

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Correspondence to Igor C. Miyahira.

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The authors declare no conflict of interest.

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Rodrigues, A.J.S., Miyahira, I.C., Rodrigues, N. et al. Wide tolerance to environmental conditions and substrate colonization mediates the invasion of false mussels (Bivalvia: Dreissenidae) in brackish systems. Biol Invasions 24, 2245–2260 (2022). https://doi.org/10.1007/s10530-022-02772-z

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  • DOI: https://doi.org/10.1007/s10530-022-02772-z

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