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Daily variation in Dichelopandalus bonnieri (Caullery) as a component of the epibenthos
Al-Adhub, A.-H.Y.; Naylor, E. (1977). Daily variation in Dichelopandalus bonnieri (Caullery) as a component of the epibenthos, in: Keegan, B.F. et al. (Ed.) Biology of Benthic Organisms: 11th European Symposium on Marine Biology, Galway, October 1976. pp. 1-6
In: Keegan, B.F.; Ceidigh, P.O.; Boaden, P.J.S. (Ed.) (1977). Biology of Benthic Organisms: 11th European Symposium on Marine Biology, Galway, October 1976. European Marine Biology Symposia, 11. Pergamon Press: Oxford. ISBN 0-08-021378-2. XXXIII, 630 pp., more
In: European Marine Biology Symposia., more

Keywords
    Aquatic communities > Benthos
    Interspecific relationships > Predation
    Temporal variations > Periodic variations > Diurnal variations
    Dichelopandalus bonnieri Caullery, 1896 [WoRMS]; Nephrops norvegicus (Linnaeus, 1758) [WoRMS]
    ANE, Isle of Man [Marine Regions]
    Marine/Coastal

Authors  Top 
  • Al-Adhub, A.-H.Y.
  • Naylor, E.

Abstract
    Beam trawl catches of Dichelopandalus bonnieri in 75-80m depth off the S.W. Isle of Man show greatest numbers in the afternoon, sunset and sunrise. Evidence suggests that the shrimps swim up off the bottom at night and during the morning, possibly as a mechanism of dispersal and avoidance of bottom-feeding fish. Feeding appears to take place on the bottom, D. bonnieri probably competing for food with, and sometimes being eaten by Nephrops norvegicus which emerges from its burrows to feed at approximately the same time of the day.

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