Underwater noise is increasing globally, largely due to increased vessel numbers and international ocean trade. Vessels are also a major vector for translocation of non-indigenous marine species which can have serious implications for biosecurity. The possibility that underwater noise from fishing vessels may promote settlement of biofouling on hulls was investigated for the ascidian Ciona intestinalis. Spatial differences in biofouling appear to be correlated with spatial differences in the intensity and frequency of the noise emitted by the vessel’s generator. This correlation was confirmed in laboratory experiments where C. intestinalis larvae showed significantly faster settlement and metamorphosis when exposed to the underwater noise produced by the vessel generator. Larval survival rates were also significantly higher in treatments exposed to vessel generator noise. Enhanced settlement attributable to vessel generator noise may indicate that vessels not only provide a suitable fouling substratum, but vessels running generators may be attracting larvae and enhancing their survival and growth.


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    Titel :

    Vessel generator noise as a settlement cue for marine biofouling species


    Beteiligte:
    McDonald, J.I. (Autor:in) / Wilkens, S.L. (Autor:in) / Stanley, J.A. (Autor:in) / Jeffs, A.G. (Autor:in)

    Erschienen in:

    Biofouling ; 30 , 6 ; 741-749


    Erscheinungsdatum :

    2014


    Format / Umfang :

    9 Seiten, 5 Bilder, 44 Quellen




    Medientyp :

    Aufsatz (Zeitschrift)


    Format :

    Print


    Sprache :

    Englisch




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