Meso- and microzooplankton feeding rates on toxic and non-toxic dinoflagellates cultured at different N/P ratio
Meso- and microzooplankton feeding rates on toxic and non-toxic dinoflagellates cultured at different N/P ratio
An experimental study was carried out to investigate meso- and microzooplankton (Acartia margalefiand Oxyrrhis marina) feeding rates on a toxic dinoflagellate (Gyrodinium corsicum) cultured at different N/P ratios. We tested whether P-limitation enhances dinoflagellate toxicity repressing grazing rates and inducing predator mortality. Feeding rates of Acartia margalefion G.corsicumcultured at P-limitation conditions are lower than growing at Redfield N/P ratio, while Oxyrrhis marinadid not graze on it at any N/P ratio.However, mortality and losses of motility of grazers were not detected at any N/P ratio
37e Congrès de la CIESM : 37th CIESM Congress, 7-11 June 2004, Barcelone, Espagne.-- 1 page, 1 figure
Peer reviewed
Micro-and mesozooplankton, Grazing rates, P-limitation, Toxic dinoflagellate
Micro-and mesozooplankton, Grazing rates, P-limitation, Toxic dinoflagellate
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