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Range extension and reproduction of the barnacle Balanus perforatus in the eastern English Channel

Herbert, R.J.H., Hawkins, S.J., Sheader, M. and Southward, A.J. (2003) Range extension and reproduction of the barnacle Balanus perforatus in the eastern English Channel Journal of the Marine Biological Association of the United Kingdom, 83, (1), pp. 73-82.

Record type: Article


The distribution of the warm-water barnacle, Balanus perforatus, was surveyed along the south coast of England and the north-east coast of France between 1993 and 2001, repeating work carried out between the 1940s and 1960s. The species has recovered from catastrophic mortality during the severe winter of 1962–1963 and was found over 120 km (UK) and 190 km (France) east of previous records on both sides of the Channel. The presence of the species in the eastern Channel refutes suggestions in the 1950s that larvae, and hence adults, would not be found east of the Isle of Wight because of reproductive sterility close to the limits of distribution. Brooding of specimens translocated to Bembridge, Isle of Wight, commenced in May, earlier than previously observed in British waters, and continued until September. The stage of embryo development at Bembridge in mid-August was comparable to that of the large population at Lyme Regis, Dorset 100 km further west. However the size of brood per standard body weight was greater at Lyme Regis. Factors influencing the rate of colonization and further geographic range extension of the species as a possible result of climate change, are discussed.

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Published date: 2003
Keywords: english channel (e), colonization, range shifts, climatic changes, bilogy


Local EPrints ID: 2170
ISSN: 0025-3154
PURE UUID: d42ae242-e02d-4bcc-b412-d3ae4fa78199

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Date deposited: 14 May 2004
Last modified: 17 Jul 2017 17:16

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Author: R.J.H. Herbert
Author: S.J. Hawkins
Author: M. Sheader
Author: A.J. Southward

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