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Interactions between two deposit feeding echinoderms: the spatangoid Brissopsis lyrifera (Forbes) and the ophiuroid Amphiura chiajei Forbes
Hollertz, K.; Sköld, M.; Rosenberg, R. (1998). Interactions between two deposit feeding echinoderms: the spatangoid Brissopsis lyrifera (Forbes) and the ophiuroid Amphiura chiajei Forbes, in: Baden, S. et al. (Ed.) Recruitment, Colonization, and Physical-Chemical Forcing in Marine Biological Systems: Proceedings of the 32nd European Marine Biology Symposium, held in Lysekil, Sweden, 16-22 August 1997. Developments in Hydrobiology, 132: pp. 287-295
In: Baden, S. et al. (Ed.) (1998). Recruitment, Colonization, and Physical-Chemical Forcing in Marine Biological Systems: Proceedings of the 32nd European Marine Biology Symposium, held in Lysekil, Sweden, 16-22 August 1997. Developments in Hydrobiology, 132. Hydrobiologia, 375/376. 380 pp., more
In: Dumont, H.J. (Ed.) Developments in Hydrobiology. Kluwer Academic/Springer: The Hague; London; Boston; Dordrecht. ISSN 0167-8418, more

Also published as
  • Hollertz, K.; Sköld, M.; Rosenberg, R. (1998). Interactions between two deposit feeding echinoderms: the spatangoid Brissopsis lyrifera (Forbes) and the ophiuroid Amphiura chiajei Forbes. Hydrobiologia 375-376: 287-295, more

Available in  Authors 
    VLIZ: Proceedings D [98536]
Document type: Conference paper

Keywords
    Bioturbation; Burrowing organisms; Detritus feeders; Feeding behaviour; Interspecific relationships; Amphiura chiajei Forbes, 1843 [WoRMS]; Brissopsis lyrifera (Forbes, 1841) [WoRMS]; ANE, Kattegat [Marine Regions]; ANE, North Sea [Marine Regions]; ANE, Skagerrak [Marine Regions]; Marine

Authors  Top 
  • Hollertz, K.
  • Sköld, M.
  • Rosenberg, R., more

Abstract
    Amphiura chiajei and Brissopsis lyrifera typically co-occur on some soft bottom areas of the North Sea, the Skagerrak and the Kattegat; they form the so called lsquoBrissopsis-chiajei associationrsquo. Both species are deposit feeders that live partly ( A. chiajei) or completely ( B. lyrifera) burried in the sediment. In this association, each species is expected to affect the other one, notably through its feeding and burrowing activities. This study investigates the effects on body and gonads growth in A. chiajei and B. lyrifera as a result of their co-occurrence. The experiments were performed in aquaria with natural sediments (3 months observations) and have taken in account the population densities of both species and the availability of food. The results show that B. lyrifera can negatively affect the growth of body and gonads of A. chiajei, while A. chiajei seemingly has no effect on the growth of B. lyrifera. This situation probably results from the extensive bioturbation of the sediment by B. lyrifera, who also increased its surface feeding activity when food was added to the sediment surface.

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