Red tides in Masan Bay, Korea in 2004–2005: II. Daily variations in the abundance of heterotrophic protists and their grazing impact on red-tide organisms

Yoo, Yeong Du; Jeong, Hae Jin; Kim, Jae Seong; Kim, Tae Hoon; Kim, Jong Hyeok; Seong, Kyeong Ah; Lee, Seung Hyun; Kang, Nam Seon; Park, Jong Woo; Park, Jae-Yeon; Yoon, Eun Young; Yih, Won Ho

doi:10.1016/j.hal.2013.10.009

Cited by 49 publications

(19 citation statements)

References 92 publications

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“…; Strom and Buskey ; Yoo et al. ,b). Cells of N. scintillans engulf diverse prey cells, including bacteria, algal species, and copepod eggs, using a tentacle and mucus webs (Kimor ; Kirchner et al.…”

Section: Discussionmentioning

confidence: 99%

Interactions between the Newly Described Small‐ and Fast‐Swimming Mixotrophic Dinoflagellate Yihiella yeosuensis and Common Heterotrophic Protists

Jeong

Kang

You

et al. 2018

J Eukaryotic Microbiology

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The mixotroph Yihiella yeosuensis is a small-and fast-swimming dinoflagellate. To investigate its protistan predators, interactions between Y. yeosuensis and 11 heterotrophic protists were explored. No potential predators were able to feed on actively swimming Y. yeosuensis cells, which escaped via rapid jumps, whereas Aduncodinium glandula, Oxyrrhis marina, and Strombidinopsis sp. (approximately 150 lm in cell length) were able to feed on weakly swimming cells that could not jump. Furthermore, Gyrodinium dominans, Luciella masanensis, and Pfiesteria piscicida were able to feed on heat-killed Yihiella cells, whereas Gyrodinium moestrupii, Noctiluca scintillans, Oblea rotunda, Polykrikos kofoidii, and Strombidium sp. (20 lm) did not feed on them. Thus, the jumping behavior of Y. yeosuensis might be primarily responsible for the observed lack of predation. With increasing Yihiella concentration, the growth rate of O. marina decreased, whereas that of Strombidinopsis did not change. However, with increasing Yihiella concentration (up to 530 ng C/ml), the ingestion rate of Strombidinopsis on Yihiella increased linearly. The highest ingestion rate was 24.1 ng C per predator per d. The low daily carbon acquisition from Yihiella relative to the body carbon content of Strombidinopsis might be responsible for its negligible growth. Thus, Y. yeosuensis might have an advantage over its competitors due to its low mortality rate.

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Section: Discussionmentioning

confidence: 99%

Interactions between the Newly Described Small‐ and Fast‐Swimming Mixotrophic Dinoflagellate Yihiella yeosuensis and Common Heterotrophic Protists

Jeong

Kang

You

et al. 2018

J Eukaryotic Microbiology

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“…A. sanguinea has clearly been identified as an important prey type, including for, among others, anchovetta (Lasker, 1975;Lasker and Zweifel, 1978). High predator induced mortality rates for A. sanguinea have been reported due to predation by ciliates and other microplankton, which due to the protistan predators often high abundance can significantly reduce population abundance of A. sanguinea (Jeong et al, 1999;Yoo et al, 2013). Thus, in situ mortality due to predation must be a factor in the population dynamics of this species.…”

Section: Source Of Variationmentioning

confidence: 99%

Bloom formation potential in the harmful dinoflagellate Akashiwo sanguinea: Clues from movement behaviors and growth characteristics

Menden‐Deuer

Montalbano

2015

Harmful Algae

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“…However, feeding by other mixotrophic red tide dinoflagellates on heterotrophic bacteria has not yet been investigated. Jeong et al (2006) and Yoo et al (2013) reported that the abundance of the heterotrophic dinoflagellate Pfiesteria piscicida and morphologically similar heterotrophic dinoflagellates (so called Pfiesteria-like dinoflagellates) exceeded 10,000 cells mL -1 (i.e., >1,000 ng C mL -1…”

Section: Lowest Concentrations Of Algicidal Bacteria Required To Killmentioning

confidence: 99%

Interactions between marine bacteria and red tide organisms in Korean waters

Seong¹,

Jeong²

2013

ALGAE

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There is increasing interest in the relationships between marine bacteria and red tide organisms. Some bacteria are known to kill red tide organisms, and may be responsible for accelerating the termination of red tides. Thus, certain algicidal bacteria have been proposed for the control of red tides. Meanwhile, many red tide organisms are known to feed on marine bacteria. The roles of marine bacteria and red tide organisms are therefore reversible. In Korean waters, the killing of red tide organisms by algicidal bacteria, and also the feeding of red tide organisms on marine bacteria have been extensively investigated. The findings of such studies may influence the conventional view of red tide dynamics, and also planktonic food webs. Here, we review the species and concentrations of algicidal bacteria that kill red tide organisms in Korean waters, as well as the ingestion rate and grazing impact of red tide organisms on marine bacteria. Furthermore, we offer an insight into the ecological roles of these 2 components in marine planktonic food webs.

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Red tides in Masan Bay, Korea in 2004–2005: II. Daily variations in the abundance of heterotrophic protists and their grazing impact on red-tide organisms

Cited by 49 publications

References 92 publications

Interactions between the Newly Described Small‐ and Fast‐Swimming Mixotrophic Dinoflagellate Yihiella yeosuensis and Common Heterotrophic Protists

Interactions between the Newly Described Small‐ and Fast‐Swimming Mixotrophic Dinoflagellate Yihiella yeosuensis and Common Heterotrophic Protists

Bloom formation potential in the harmful dinoflagellate Akashiwo sanguinea: Clues from movement behaviors and growth characteristics

Interactions between marine bacteria and red tide organisms in Korean waters

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