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| Contribution à la connaissance de la faune marine de la côte belge: 6. L'influence de la lumière sur la fixation d'Ostrea edulis (L) et de Crepidula fornicata (L) sur les collecteurs d'huîtres |  |
| Bracke, E.; Polk, P. (1969). Contribution à la connaissance de la faune marine de la côte belge: 6. L'influence de la lumière sur la fixation d'Ostrea edulis (L) et de Crepidula fornicata (L) sur les collecteurs d'huîtres Hydrobiologia 34(1): 100-125 |
| In: Hydrobiologia. Springer: Berlin. ISSN 0018-8158, meer |
| Ook gepubliceerd als |
- Bracke, E.; Polk, P. (1971). Contribution à la connaissance de la faune marine de la côte belge: 6. L'influence de la lumière sur la fixation d'Ostrea edulis (L) et de Crepidula fornicata (L) sur les collecteurs d'huîtres, in: (1971). IZWO Coll. Rep. 1(1971). IZWO Collected Reprints, 1: pp. chapter 4 [Subsequent publication], meer
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| Trefwoorden |
Bestrijding; Geïntroduceerde soorten; Larvale vestiging; Oyster culture; Crepidula fornicata (Linnaeus, 1758) [WoRMS]; Ostrea edulis Linnaeus, 1758 [Eetbare oester] [WoRMS]; ANE, België, Belgische kust [gazetteer]; ANE, België, Oostende, Spuikom [gazetteer]; Marien; Brak water |
| Abstract |
The difference of phototropism and phototaxis of both molluscs influenced their fixation. The orientation of both molluscs is towards the incoming light-direction, less pronounced when the light-density to the center of the tile is decreasing. The density of the populations of oysters is increasing towards the center of the tiles by decreasing light-intensity, the density of the Crepidula-population decreasing towards the center of the collector. The competition of both organisms in relation to space, is, under the opposed influence of the light, less than described in the literature. Theoretically it is possible to separate Crepidula and oyster-fixation, using this property. Statistical analysis corroborated our observations. |
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