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Spatial variation in the recruitment of the intertidal barnacles Chthamalus montagui Southward and Chthamalus stellatus (Poli) (Crustacea: Cirripedia) over an European scale

Record type: Article

Spatial variation in the recruitment of the intertidal barnacles Chthamalus montagui and Chthamalus stellatus was examined over an European scale. The study was carried out using standardised protocols at a series of locations. The five locations chosen (SW Ireland, NW Spain, SW Portugal and NW and NE Italy) span a large part of the range of these species in Europe. The spatial scales were location (hundreds of kilometres) and shore (thousands of metres).

Estimates of total cumulative recruitment (cyprids and metamorphs) summed over the year (April 1997 to March 1998) showed substantial variation between locations which was dependent on the species. Recruitment was highest in SW Portugal for C. montagui and in SW Ireland and NW Spain for C. stellatus. Overall recruitment of C. montagui was higher than that of C. stellatus at all locations except SW Ireland, where recruitment of the two species was not significantly different. There were significant differences among shores in each location.

The recruitment period of both species varied with location, with recruitment beginning earlier further south. In general, recruitment of C. montagui and C. stellatus was recorded in 8 months in NW Spain and NE Italy, while only in 7 months in SW Ireland. Recruitment of C. montagui occurred in 10 months in SW Portugal, but no recruits of C. stellatus were found. In all locations there was at least one distinct peak of recruitment. In SW Ireland both species showed only one peak of recruitment, a month after initiation. At the more southerly Atlantic locations, as well as in the Mediterranean, two unequal peaks of recruitment were generally seen. During recruit census, the number of cyprids, in comparison to metamorphs, found at any location was very low. In SW Ireland and NW Spain cyprids of both species were found, while in SW Portugal and in the Mediterranean, only cyprids of C. montagui were found.

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Citation

O'Riordan, R.M., Arenas, F., Arrontes, J., Castro, J.J., Cruz, T., Delany, J., Martinez, B., Fernandez, C., Hawkins, S.J., McGrath, D., Myers, A.A., Oliveros, J., Pannacciulli, F.G., Power, A-M., Relini, G., Rice, J.M. and Silva, T. (2004) Spatial variation in the recruitment of the intertidal barnacles Chthamalus montagui Southward and Chthamalus stellatus (Poli) (Crustacea: Cirripedia) over an European scale Journal of Experimental Marine Biology and Ecology, 304, (2), pp. 243-264. (doi:10.1016/j.jembe.2003.12.005).

More information

Published date: 2004
Keywords: Barnacles, Chthamalus, Recruitment, Spatial variation

Identifiers

Local EPrints ID: 188323
URI: http://eprints.soton.ac.uk/id/eprint/188323
ISSN: 0022-0981
PURE UUID: 91112b44-fdfb-4971-a66e-2f960ccaf16c

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Date deposited: 24 May 2011 10:53
Last modified: 18 Jul 2017 11:42

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Contributors

Author: R.M. O'Riordan
Author: F. Arenas
Author: J. Arrontes
Author: J.J. Castro
Author: T. Cruz
Author: J. Delany
Author: B. Martinez
Author: C. Fernandez
Author: S.J. Hawkins
Author: D. McGrath
Author: A.A. Myers
Author: J. Oliveros
Author: F.G. Pannacciulli
Author: A-M. Power
Author: G. Relini
Author: J.M. Rice
Author: T. Silva

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