MEPS 151:299-305 (1997) - doi:10.3354/meps151299
Fragilidium cf. mexicanum, a thecate mixotrophic dinoflagellate which is prey for and a predator on co-occurring thecate heterotrophic dinoflagellate Protoperidinium cf. divergens
Jeong HJ, Lee CW, Yih WH, Kim JS
The thecate heterotrophic dinoflagellate Protoperidinium cf. divergens and the thecate mixotrophic dinoflagellate Fragilidium cf. mexicanum feed on each other. In general, F. cf. mexicanum is the predominant predator in this reciprocal predation. At initial concentration ratios <=0.4 (F. cf. mexicanum:P. cf. divergens), both species fed on each other, but did not seriously affect the other's population. At ratios >= 0.8, P. cf. divergens was drastically reduced to very low concentrations, and active predation by F. cf. mexicanum on P. cf. divergens was observed. This reciprocal predation may affect our view of energy and cycling of carbon in the planktonic community.
Dinoflagellate · Food web · Heterotrophy · Mixotrophy · Protist · Reciprocal predation
|Full text in pdf format|