Grazing of echinoderm larvae (Paracentrotus lividus and Arbacia lixula) on naturally occurring particulate matter |
| |
Authors: | Rassoulzadegan Fereidoun; Fenaux Lucienne |
| |
Institution: | Station Marine, Station Zoologique 06230 Villefranche-sur-Mer, France |
| |
Abstract: | Larvae (72 hr old) of P. lividus and A. lixula grazed on varioussuspensions of natural particulate matter with a size rangeof 2 to 30 microns, and on two species of algae (Phaeodactylumtricor-nutum and Nitzschia sp.) Larvae graze most in the size range where the particleconcentration is highest. If larvae deplete certain size categories of particlesthey then graze other size ranges in which the concentrationis still high. The grazing rate of the two species varied between 988and 91.949 µm3 per pluteus per hour. For A. lixula larvae the grazing rate increases withincreasing temperature to a maximum at 22°C. |
| |
Keywords: | |
本文献已被 Oxford 等数据库收录! |