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Tidal rates of settlement of the intertidal barnacles and in western Europe: the influence of the night/day cycle

Cruz, T., Castro, J.J., Delany, J., McGrath, D., Myers, A.A., O'Riordan, R.M., Power, A-M., Rabaca, J. and Hawkins, S.J. (2005) Tidal rates of settlement of the intertidal barnacles and in western Europe: the influence of the night/day cycle Journal of Experimental Marine Biology and Ecology, 318, (1), pp. 51-60. (doi:10.1016/j.jembe.2004.12.005).

Record type: Article

Abstract

Chthamalus montagui and Chthamalus stellatus are abundant barnacles in western Europe. Tidal settlement of Chthamalus in SW Ireland and SW Portugal was studied in relation to a night and day factor and at different temporal (dates) and spatial (shores and sites) scales. Based on the identifiable cyprids and metamorphs, Chthamalus settlement in SW Ireland was comprised mainly of C. stellatus but was composed of C. montagui only in SW Portugal.

In SW Ireland and SW Portugal, settlement rates of Chthamalus (mean number of settlers per 25 cm2±S.E.) were higher after one day tidal cycle (597±158.7 in SW Ireland, 144±23.6 in SW Portugal) than one night tidal cycle (55±12.1 in SW Ireland, 13±2.2 in SW Portugal), but significant differences were only detected in SW Portugal. Different models were proposed for explaining this pattern related to night and day variability of the physical processes responsible for transporting cyprids to shore (1), and/or of pre-settlement behaviour (2) and/or of settlement behaviour of cyprids (3).

Spatial patterns of tidal settlement of both species or at both locations seem similar with small scale variability (between sites, 5 to 30 m apart) in settlement of Chthamalus being the only spatial scale at which variability was detected in both locations.

The composition of Chthamalus cohorts settling during one tidal cycle differed considerably between locations/species: settlers of C. stellatus were mainly cyprids; settlers of C. montagui during the day (when most settlement occurred) were essentially metamorphs.

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More information

Published date: 4 May 2005
Keywords: Barnacles, Chthamalus, Night/day, Settlement, Tidal cycle, Western Europe

Identifiers

Local EPrints ID: 188279
URI: http://eprints.soton.ac.uk/id/eprint/188279
ISSN: 0022-0981
PURE UUID: ceaff7bd-bbf1-40bd-9ad0-12cb97a87376

Catalogue record

Date deposited: 23 May 2011 13:57
Last modified: 18 Jul 2017 11:42

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Contributors

Author: T. Cruz
Author: J.J. Castro
Author: J. Delany
Author: D. McGrath
Author: A.A. Myers
Author: R.M. O'Riordan
Author: A-M. Power
Author: J. Rabaca
Author: S.J. Hawkins

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