Distribution of the heterotrophic dinoflagellate Pfiesteria piscicida in Korean waters and its consumption of mixotrophic dinoflagellates, raphidophytes and fish blood cells

Abstract

-1). Calculated grazing coefficients on co-occurring Amphidinium spp., H. akashiwo, and cryptophytes were up to 1.07, 0.45, and 0.22 h -1 , respectively. Our results suggest that grazing by P. piscicida potentially has a considerable effect on algal populations.

Effects of temperature, salinity, and prey organisms on the growth of three Pfiesteria-like heterotrophic dinoflagellates

“…1). This is similar to the results for P. piscicida (Jeong et al 2006). The growth rate of the dinoflagellate, Gymnodinium sp.…”

“…Our results showed that thecate dinoflagellates are not available as for prey PLD species (Table 1). A similar result was also reported by Jeong et al (2006); P. piscicida is able to feed on unarmored phytoflagellates, including Heterosigma akashiwo, whereas they did not feed on thecate mixotrophic dinoflagellates, with the exception of Heterocapsa rotundata (Lohmann) Hansen. In Jeong et al (2006), P. piscicida efficiently utilized the thecate dinoflagellate H. rotundata.…”

“…Pfiesteria piscicida and Pfiesteria-like dinoflagellates (PLDs) are capable of ingesting various types of organisms (Burkholder & Glasgow 1995, Seaborn et al 1999 2004, Jeong et al 2006,). Due to this feeding ability, these PLD species probably play an important role in the planktonic food webs of estuarine and coastal ecosystems.…”

“…Moreover, it has been demonstrated that P. piscicida and L. masanensis can utilize diatoms (Jeong et al 2006. Jeong et al (2007) also reported that Stoekeria algicida could not utilize algal plankton other than H. akashiwo.…”

Feeding by protists and copepods on the heterotrophic dinoflagellates Pfiesteria piscicida, Stoeckeria algicida, and Luciella masanensis

“…Lewitus et al 2002). Their cell length and width are approximately 5 to 25 μm and 3 to 20 μm, respectively, and the ranges of the cell lengths and widths overlap between species (Jeong et al 2006). Further, their shapes are very similar, whereas their plate patterns and DNA sequences clearly differ (Steidinger et al 1996, Jeong et al 2005b ABSTRACT: To investigate interactions between the heterotrophic dinoflagellates Pfiesteria piscicida, Stoeckeria algicida, and Luciella masanensis and their protozoan and metazoan predators, we measured the growth and/or ingestion rates of the heterotrophic dinoflagellate Oxyrrhis marina, the ciliate Strombidinopsis jeokjo, and the calanoid copepods Acartia spp.…”