|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. Hydrobiologia 375-376: 287-295
In: Hydrobiologia. Springer: The Hague. ISSN 0018-8158, 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, 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, more
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|Document type: Conference paper|
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
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 Brissopsis-chiajei association. 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.