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Ingestion of cryptophyte cells by the marine photosynthetic ciliate Mesodinium rubrum
DC Field | Value | Language |
---|---|---|
dc.contributor.author | Yih, W. | - |
dc.contributor.author | Hyung, S.K. | - |
dc.contributor.author | Jeong, HJ | - |
dc.contributor.author | Myung, G. | - |
dc.contributor.author | Young, G.K. | - |
dc.date.accessioned | 2023-06-08T07:53:42Z | - |
dc.date.available | 2023-06-08T07:53:42Z | - |
dc.date.created | 2023-06-08 | - |
dc.date.issued | 2004-07 | - |
dc.identifier.citation | Aquatic Microbial Ecology, Vol.36 No.2, pp.165-170 | - |
dc.identifier.issn | 0948-3055 | - |
dc.identifier.uri | https://hdl.handle.net/10371/192776 | - |
dc.description.abstract | We investigated the mechanism of capturing and ingesting cryptophyte cells by a laboratory strain of the marine photosynthetic ciliate Mesodinium rubrum Lohmann 1908 (= Myrionecta rubra Jankowski 1976), a cosmopolitan red tide species. When offered cryptophytes as food, M. rubrum, originally grown photosynthetically for 2 wk, used its bifurcated oral tentacles to instantly seize prey cells when encountered. Immediately after capturing a prey cell, M rubrum swam in a zigzag pattern (30 to 60 mum long linear paths) for >4 s, without showing the large jumps (with ca. 2000 mum long linear paths) that were usually observed when the predator was not feeding. M rubrum with a cryptophyte attached to its tentacles became motionless while the prey cell was moved to the oral surface of the predator, a process that took < 10 s. Engulfment of a captured prey cell by M. rubrum occurred through a cytostome-like structure and took ca. 15 s. Once engulfed, the prey was slowly delivered to the posterior end of the ciliate over a period of ca. 63 s. The whole feeding process lasted approximately 92 s. With increasing mean prey concentration, specific growth rates of M rubrum feeding on the cryptophyte increased, with saturation at a mean prey concentration of 44 cells ml(-1). The maximum specific growth rate (mixotrophic growth) of M rubrum feeding on the cryptophyte was 0.521 d(-1), under continuous illumination of 60 muE m(-2) s(-1), while its growth rate (phototrophic growth) under the same light conditions without added prey was 0.357 d(-1). The ingestion rate of M rubrum feeding on cryptophytes increased continuously with increasing prey concentration. The maximum ingestion rate was 8.9 cryptophytes ciliate(-1) d(-1). M rubrum may sometimes exert considerable impact on prey populations. | - |
dc.language | 영어 | - |
dc.publisher | Inter-Research Science Publishing | - |
dc.title | Ingestion of cryptophyte cells by the marine photosynthetic ciliate Mesodinium rubrum | - |
dc.type | Article | - |
dc.identifier.doi | 10.3354/ame036165 | - |
dc.citation.journaltitle | Aquatic Microbial Ecology | - |
dc.identifier.wosid | 000223119700006 | - |
dc.identifier.scopusid | 2-s2.0-4243165591 | - |
dc.citation.endpage | 170 | - |
dc.citation.number | 2 | - |
dc.citation.startpage | 165 | - |
dc.citation.volume | 36 | - |
dc.description.isOpenAccess | Y | - |
dc.contributor.affiliatedAuthor | Jeong, HJ | - |
dc.type.docType | Article | - |
dc.description.journalClass | 1 | - |
dc.subject.keywordPlus | RED-WATER | - |
dc.subject.keywordPlus | DINOFLAGELLATE | - |
dc.subject.keywordPlus | DINOPHYCEAE | - |
dc.subject.keywordPlus | ULTRASTRUCTURE | - |
dc.subject.keywordPlus | MIXOTROPHY | - |
dc.subject.keywordPlus | RETENTION | - |
dc.subject.keywordPlus | BEHAVIOR | - |
dc.subject.keywordPlus | RATES | - |
dc.subject.keywordPlus | SIZE | - |
dc.subject.keywordAuthor | feeding | - |
dc.subject.keywordAuthor | growth rate | - |
dc.subject.keywordAuthor | grazing | - |
dc.subject.keywordAuthor | life cycle | - |
dc.subject.keywordAuthor | phagotrophy | - |
dc.subject.keywordAuthor | red tide | - |
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- College of Natural Sciences
- Department of Earth and Environmental Sciences
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