1974
DOI: 10.2307/3225158
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Comments on the Role of the Cyst in the Life Cycle and Survival of Free-Living Protozoa

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Cited by 177 publications
(101 citation statements)
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“…1c) occurs in a short, sudden burst induced by appropriate environmental conditions. The addition of water, without wheat material, did not stimulate ciliate production (Fig 1c); hence, ciliate excystment is probably triggered by some substance produced by growing bacteria, e.g., carbon dioxide or an organic bacterial waste product (2,9,13,37,40).…”
Section: Discussionmentioning
confidence: 99%
“…1c) occurs in a short, sudden burst induced by appropriate environmental conditions. The addition of water, without wheat material, did not stimulate ciliate production (Fig 1c); hence, ciliate excystment is probably triggered by some substance produced by growing bacteria, e.g., carbon dioxide or an organic bacterial waste product (2,9,13,37,40).…”
Section: Discussionmentioning
confidence: 99%
“…1a, closed circles). 'Starvation' is known to be a common factor in encystment induction among a number of protozoans [13]. Starvation-mediated encystment may be involved in the consumption of intracellular encystment-suppressing nutrient molecules and their metabolic products [12].…”
Section: Resultsmentioning
confidence: 99%
“…Cyst formation by free-living protozoa, including planktonic forms, is well known as a common strategy in thelr life cycle (Corliss & Esser 1974). Especially in the case of neritic temperate and boreal plankton, a resting stage is the primary strategy for survival in a seasonally variable environment (Smayda 1958).…”
Section: Introductionmentioning
confidence: 99%