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| Konan, A; Cardinal, A; Lamontagne, I. |
| The temporal variations of the grazing rate of a marine herbivorous gastropod, Littorina saxatilis, were measured in laboratory conditions. In a first series of measurements, the natural circadian and tidal cycles were preserved. Samplings were performed at intervals of 2 h over a period of 8 d. In a second series of experiments, during two three-day periods, the natural circadian or tidal cycles were reversed. The available resource for the herbivores was obtained from artificial substrata previously colonized by intertidal microflora at the same tidal level as that where L. saxatilis was found. This algal assemblage was principally composed of pennate diatoms, Achnanthes groenlandica and Fragilaria striatula being the most common. The grazing rate was... |
| Tipo: Text |
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| Ano: 1992 |
URL: http://archimer.ifremer.fr/doc/00100/21172/18790.pdf |
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