Effect of diphenyl, o-phenylphenol and 2-(4-thiazoyl) benzimidazole on growth ofTetrahymena pyriformis

Otsuka, Kimihito; Yoshikawa, Hiroshi; Sugitani, Akira; Kawai, Makoto

doi:10.1007/bf01705443

Cited by 13 publications

(3 citation statements)

References 2 publications

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“…Information is available on the effects on laboratory strains, especially of amoebae and ciliates in axenic or in monoxenic liquid culture (Prescott, Kubovec & Tryggestad 1977; Dive, Leclerc & Persoone 1980; Lal & Saxena 1980; Pons & Pussard 1980; Lord & Wright 1982; Dive et al . 1984; Otsuka et al . 1988).…”

Section: Introductionmentioning

confidence: 99%

The impact of the fungicide fenpropimorph (Corbel®) on bacterivorous and fungivorous protozoa in soil

Ekelund

1999

Journal of Applied Ecology

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Summary 0[ The ability of indigenous soil protozoa to survive and multiply when exposed to various concentrations of the fungicide fenpropimorph was investigated[ The number of protozoan taxa in relation to biocide concentration was examined in enrichment cultures[ The population dynamics of bacterivorous and fungivorous protozoa\ hyphal forming units\ and respiration activity were followed in soil microcosms amended with glucose and various concentrations of fenpropimorph[ 1[ The average number of~agellate taxa detected in 49!mg portions of air!dried soil declined from 01 to zero with fenpropimorph concentrations increasing from 9 to 59 mg L Ð0 [ Naked amoebae and ciliates were present at all fenpropimorph concen! trations[ The 49!mg soil portions initially contained 0=8 × 09 2 heterotrophic~agel! lates\ 0=3 × 09 2 naked amoebae and about 4 ciliates[ The presence of the two latter groups even at concentrations of 59 mg L Ð0 therefore suggests that they are more tolerant to fenpropimorph than the soil~agellates[ 2[ The addition of glucose had a strong stimulatory e}ect on soil respiration\ which lasted for about 19 days[ Soil respiration in microcosms amended with glucose and pesticide was of the same order as in systems with glucose only^however\ soil res! piration was signi_cantly impeded in microcosm systems with a low pesticide content and stimulated in systems with a high pesticide content[ 3[ Bacterivorous protozoa "naked amoebae and heterotrophic~agellates# were a}ec! ted at all tested concentrations "9=63Ð649 mg L Ð0 # of fenpropimorph[ High con! centrations\ 5=5Ð649 mg L Ð0

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Section: Introductionmentioning

confidence: 99%

The impact of the fungicide fenpropimorph (Corbel®) on bacterivorous and fungivorous protozoa in soil

Ekelund

1999

Journal of Applied Ecology

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“…Its short generation time and its axenical culture are especially advantageous for studying the action of xenobiotics on several generations of cells. This ciliate has been used to determine the effects of insecticides (9,29), fungicides (23), mycotoxins (7), organic chemicals (15), drugs, such as antibiotics (5,12), and other chemical substances (31).…”

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confidence: 99%

Uptake and efflux of polycyclic aromatic hydrocarbons byTetrahymena pyriformis: Evidence for a resistance mechanism

et al. 1997

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“…Many years of research have yielded a great deal of informa- Bergquist et al, 1986Houba etal., 1981Wakatsuki et al, 1984Larsen & Nilsson, 1983Nishie et al, 1989Hayes et al, 1974Saxena etal., 1981Silberstein & Hooper, 1975Otsuka et al, 1988Cooley, 1973Schultz et al, 1978Schultz & Dumont, 1977 tion regarding how natural or non-anthropogenic variables (e.g., temperature, pH, salinity, alkalinity) affect ciliate communities. However, results using littoral and benthic species have indicated that the information derived from such an approach is valuable, especially considering that lower levels of the food chain are often more sensitive to aquatic ecosystem stress than are higher levels, such as crustaceans and fish.…”

Section: Determination Of Colonization Ratementioning

confidence: 99%

A brief review of approaches using ciliated protists to assess aquatic ecosystem health

Lynn

Gilron

1992

J Aquat Ecosyst Stress Recov

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Ciliated protists are important components of marine and freshwater ecosystems. As such, their usefulness as indicators of aquatic ecosystem health has been recognized. Two major technical approaches have been employed:(1) community assessment, and (2) toxicological tests. Community assessment of an aquatic ecosystem must at least include comparisons to either baseline data on the ecosystem under study or to 'pristine' ecosystems, since abundance, diversity, and b\iomass of ciliates are correlated with ecosystem trophic status. Common sampling approaches include sampling of populations and colonization rate determination. The first method may involve nets, bottles, pumps, or integrating samplers. Samples are either counted live or fixed. The choice of fixative may influence estimates of abundance, diversity, and biomass. Colonization rates are determined using polyurethane foam units (PFU's), microscope slides, coverslips, plastic films or petri plates. Live counts are routine with this approach, but undoubtedly give less precise estimates of diversity. Toxicological tests have been devised using a number of indicators of ecosystem health, including respiration rates, growth rates, and chemotactic responses.

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Effect of diphenyl, o-phenylphenol and 2-(4-thiazoyl) benzimidazole on growth ofTetrahymena pyriformis

Cited by 13 publications

References 2 publications

The impact of the fungicide fenpropimorph (Corbel®) on bacterivorous and fungivorous protozoa in soil

The impact of the fungicide fenpropimorph (Corbel®) on bacterivorous and fungivorous protozoa in soil

Uptake and efflux of polycyclic aromatic hydrocarbons byTetrahymena pyriformis: Evidence for a resistance mechanism

A brief review of approaches using ciliated protists to assess aquatic ecosystem health

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