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ESTABLISHMENT OF THE ZEBRA MUSSEL DREISSENA POLYMORPHA (PALLAS, 1771) IN LOUGH NEAGH, NORTHERN IRELAND
S.P. McLean, D.W. Evans, R.S. Rosell, D. Roberts and J. Livingstone
Biology and Environment: Proceedings of the Royal Irish Academy
Vol. 110B, No. 1 (June 2010), pp. 55-59
Published by: Royal Irish Academy
Stable URL: http://www.jstor.org/stable/20799768
Page Count: 5
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Five adult Dreissena polymorpha were found on the hull of a boat moored in Kinnego Marina, Lough Neagh, in November 2005; this is the first indication of their presence in this large lake. This finding initiated a survey to determine whether the zebra mussel was present throughout Lough Neagh. Forty-four settled juveniles on debris were found at twenty sites around the lough shore. As a result of these findings a more extensive study was undertaken in October 2006 to examine planktonic and settled stages. Veliger larvae were at densities of 0.0211 veligers per m⁻³. Spat collectors showed settlement at six out of the seven sites sampled at a mean density of 523.76 juvenile zebra mussels per m⁻². No adult zebra mussels were found on natural substratum in the lough during the shoreline survey. However, 24 adult zebra mussels, 7.5mm to 24mm long, were found on the hull of a boat moored in Lough Neagh.
Biology and Environment: Proceedings of the Royal Irish Academy © 2010 Royal Irish Academy