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Seasonal patterns in the reproductive activity of barnacle-dwelling littorinids

Johnson, LJ; Mill, PJ; Hull, SL; Ducrotoy, JP; Caley, KJ; Johnson, Lisa J.; Mill, Peter J.; Hull, Susan L.; Ducrotoy, Paul; Caley, Kevin J.


LJ Johnson

PJ Mill

SL Hull

JP Ducrotoy

KJ Caley

Lisa J. Johnson

Peter J. Mill

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Dr Sue Hull
Senior Lecturer in Marine Biology and Ecology/ Programme Director, Marine Biology

Paul Ducrotoy

Kevin J. Caley


The reproductive activity of a population of barnacle-dwelling littorinids at Peak Steel, on the north east coast of England, was investigated. Variation in the number of mature males and females, expressed as a percentage of the whole population, showed: a marked difference among the barnacle-dwelling littorinids. Littorina neglects displayed a distinct seasonal component to its reproductive activity, with a peak in early summer, Littorina arcana B also displayed a distinct seasonal component, with a lull in the summer months. However, L. saxatilis B maintained its reproductive activity all year, but with an increase in output in the summer. The reproductive activity of both L. arcana B and L. saxatilis B follow similar patterns of reproductive activity as their typical non barnacle-dwelling forms, suggesting that these are true barnacle-dwelling ecotypes. The controversy surrounding the specific status of L. neglecta is also discussed.


Johnson, L. J., Mill, P. J., Hull, S. L., Ducrotoy, P., & Caley, K. J. (2000). Seasonal patterns in the reproductive activity of barnacle-dwelling littorinids. Journal of the Marine Biological Association of the UK, 80(5), 821-826.

Journal Article Type Article
Acceptance Date Oct 31, 2000
Publication Date 2000-10
Print ISSN 0025-3154
Publisher Cambridge University Press
Peer Reviewed Peer Reviewed
Volume 80
Issue 5
Pages 821-826
Keywords Aquatic Science
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