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Lookup NU author(s): Gabrielle Prendergast,
Dr Richard Head,
Lars Johan Hansson,
Dr Jeremy Thomason
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Many marine invertebrate larvae respond behaviourally to environmental settlement cues, yet behaviours are often only inferred from settlement patterns or are limited to laboratory studies. The behaviour of wild cypris larvae of Semibalanus balanoides L. was filmed on settlement tiles in the field. Tiles were of five different textures with a nested treatment of crude conspecific adult extract (AE). The effects of texture and AE on eleven defined behaviours were analysed. Texture affected the gross and net exploratory distances, velocity, acceleration and time spent exploring. AE attracted more cyprids during the first minute of immersion and increased the time spent on surfaces. Relatively few arrivals that either travel far and fast, or exit the surface rapidly, may indicate a lower chance of settlement. An increase in time spent on a surface may increase the probability of being in contact with the surface when the sign stimulus to settle occurs.
Author(s): Prendergast GS, Zurn CM, Bers AV, Head RM, Hansson LJ, Thomason JC
Publication type: Article
Publication status: Published
Print publication date: 01/01/2008
ISSN (print): 0892-7014
ISSN (electronic): 1026-7867
Publisher: Taylor & Francis Ltd.
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