caa a22 4500 445893346 CHVBK 20180317145623.0 cr unu---uuuuu 170323e20110901xx s 000 0 eng 10.1007/s10750-011-0752-y doi (NATIONALLICENCE)springer-10.1007/s10750-011-0752-y The dispersal and colonisation behaviour of the marine polychaete Nereis diversicolor (O. F. Müller) in south-east England [Elektronische Daten] [M. Aberson, S. Bolam, R. Hughes] A 12month in situ experiment-assessed colonisation behaviour of Nereis diversicolor (Nereis) using cores of defaunated sediment; either raised 5cm above the mudflat surface (colonisation by swimming only) or flush with it (colonisation by crawling and swimming). Recruitment and dispersal occurred throughout the year but were highest in the summer. During the summer peak dispersal period the densities of worms in the raised cores were about half of those in the flush cores indicating approximately equal levels of dispersal by swimming and crawling. Colonisation of the raised cores, by swimming only, was by Nereis less than 6cm in length. The length frequencies of worms in the flush treatments were similar to those of the natural population, including worms up to 12cm in length indicating that larger worms disperse only by crawling. In the spring and summer the abundances of the smallest Nereis in the raised cores were between 60 and 80% of the total abundances in the flush cores, indicating that most small worms had also colonised the flush treatments by swimming. The densities of worms in the flush treatments were lower than, but not significantly different to, the natural population (with the exception of November and December). It is concluded that in most months worms undergo dispersal, mainly by swimming when small, and by crawling thereafter. Springer Science+Business Media B.V., 2011 Colonisation nationallicence Dispersal nationallicence Larvae nationallicence Nereis (Hediste) diversicolor nationallicence Population structure nationallicence Aberson M. Jacobs Engineering Ltd, Kenneth Dibden House, Enterprise Road, Southampton Science Park, Chiworth, SO16 7NS, Southampton, Hampshire, UK aut Bolam S. Centre for Environment, Fisheries and Aquaculture Science, Lowestoft Laboratory, Pakefield Road, NR33 0HT, Lowestoft, Suffolk, UK aut Hughes R. School of Biological and Chemical Sciences, Queen Mary University of London, E1 4NS, London, UK aut Hydrobiologia Springer Netherlands 672/1(2011-09-01), 3-14 0018-8158 672:1<3 2011 672 10750 https://doi.org/10.1007/s10750-011-0752-y text/html Onlinezugriff via DOI 1 research-article jats NATIONALLICENCE 856 40 https://doi.org/10.1007/s10750-011-0752-y text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Aberson M. Jacobs Engineering Ltd, Kenneth Dibden House, Enterprise Road, Southampton Science Park, Chiworth, SO16 7NS, Southampton, Hampshire, UK aut NATIONALLICENCE 700 1- Bolam S. Centre for Environment, Fisheries and Aquaculture Science, Lowestoft Laboratory, Pakefield Road, NR33 0HT, Lowestoft, Suffolk, UK aut NATIONALLICENCE 700 1- Hughes R. School of Biological and Chemical Sciences, Queen Mary University of London, E1 4NS, London, UK aut NATIONALLICENCE 773 0- Hydrobiologia Springer Netherlands 672/1(2011-09-01), 3-14 0018-8158 672:1<3 2011 672 10750 Metadata rights reserved Springer special CC-BY-NC licence nationallicence BK010053 XK010053 XK010000 NATIONALLICENCE NATIONALLICENCE NL-springer