Predation by the heterotrophic dinoflagellate Protoperidinium cf. divergens on copepod eggs and early naupliar stages

Predation by the heterotrophic dinoflagellate Protoperidiniurn cf. divergens on copepod eggs and early naupliar stages

The heterotrophic dinoflagellate Protopemdinium cf. divergens, known as prey for adult copepods, itself feeds on copepod eggs and early naupliar stages. One to several P. cf. divergens can attack an egg or nauplius larger than themselves. The time for an egg to be digested was proportional to the number of P. cf. divergens attacking it. Ingestion rates of P, cf. djvergens on Acartia tonsa eggs ...

Predation effects of the calanoid copepod

This study investigated feeding rates and selective feeding of the common copepod Acartia tonsa on mixtures of the heterotrophic dinoflagellate Protoperidinium cf. divergens and the cooccurring red-tide dinoflagellate Gonyaulax polyedra and predation effects of A. tonsa on the population growth of P cf. divergens during simulated red-tide and non-red-tide periods. Ingestion and clearance rates ...

Effect of red tide dinoflagellate diet and cannibalism on the bioluminescence of the heterotrophic dinoflagellates

The effects of diet and cannibalism were assessed from changes in the bioluminescence potential of 2 speclvb of the heterotrophic dinoflagellate Protoperidinium fed 4 specles of red tide dinoflagellate prey and also maintained without added prey. The use of bioluminescence as a sensitive indicator of nutritional status and feeding was explored. The bioluminescence of Protoperidinium cf. diverge...

Feeding by the Pfiesteria-like heterotrophic dinoflagellate Luciella masanensis.

To explore the feeding ecology of the Pfiesteria-like dinoflagellate (PLD) Luciella masanensis (GenBank Accession no. AM050344, previously Lucy), we investigated the feeding behavior and the kinds of prey species that L. masanensis fed on and determined its growth and ingestion rates of L. masanensis when it fed on the dinoflagellate Amphidinium carterae and an unidentified cryptophyte species ...

Predation by Ermine and Long-tailed Weasels on Duck Eggs