The Effects of Ethyl Alcohol on Growth and Respiration in Pelomyxa Carolinensis

Pace, D. M.; Frost, Betty Lu

doi:10.2307/1538409

Cited by 6 publications

(2 citation statements)

References 10 publications

(14 reference statements)

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“…The e&ct of alcohol on conjugation in P. caudatum. The effect of ethanol on conjugation in P. caudatum was first noted by Pace and Frost (9). However, they recorded the number of conjugants only at the end of the first 24 hours after placing the organisms in the solutions.…”

Section: Resultsmentioning

confidence: 96%

The Effects of Ethanol on Conjugation and Division in Paramecium caudatum*

Pace

Hoagland

1954

The Journal of Protozoology

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The effects of ethanol on conjugation and division in Paramecium caudatum were studied in six concentrations ranging from 0 . 0 0 1~ to OSM, over a period of 72 hours.A marked increase in the number of conjugants was noted in concentrations between 0.001~ and 0.05M alcohol, especially during the first 48 hours of exposure. The optimum concentration for conjugation was 0 . 0 0 5~ a t which there were 439% more conjugants than in the control. Division also increased in the same alcohol concentrations that caused increase in conjugation. The optimum concentration for division was 0.005M. This stimulating effect of alcohol on division reached its peak within the first 24 hours.

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Section: Resultsmentioning

confidence: 96%

The Effects of Ethanol on Conjugation and Division in Paramecium caudatum*

Pace

Hoagland

1954

The Journal of Protozoology

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“…Previous studies on the growth of amoebae include those of Cutler & Crump (1927) (Hartmannella hyalina), Pace & Frost (1952) (Chaos carolinenese), Bunt (1970) (a marine Vexjllifera), Baldock & Baker (1980) (Polj~haos fasciculatum), Heal (1967) (Acanthamoeba sp. ), Rogerson (1980) (Amoeba proteus) and Rogerson & Berger (1981) (Naegleria sp.).…”

Section: Introductionmentioning

confidence: 99%

Growth and consumption rates of bacterivorous Antarctic naked marine amoebae

Mayes¹,

Rogerson²,

Marchant³

et al. 1997

Mar. Ecol. Prog. Ser.

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This IS the first study to consider the growth and feeding rates of naked marine amoebae at temperatures below 5°C. Specific growth rates were calculated for 5 Antarctic isolates, Platyamoeba australis, A4ayorella sp., Metachaos sp., Vannella sp., and an unidentified vahlkampfiid amoeba. Growth rates ranged between 0.08 X 10-l and 2.9 X 10-' h" corresponding to generation times of 866.2 and 23.9 h, respectively. All isolates grew at temperatures down to -2OC and showed optimal growth at 2°C although one species grew best at 0°C. A direct counting method was used to estimate bacterial feeding rates of P australjs and the vahlkampfiid amoeba. Rates varled as a function of prey denslty but were largely independent of temperature. Overall, amoebae consumed between 0.5 and 66.4 bacteria amoeba-' h-', equivalent to 0.3 and 38.0 pg C cell-' h-' Growth efficiencies estimated for these 2 amoebae were low, typically < 2 % , suggesting that amoebae incur high energetic costs for life at low temperatures.

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Laboratory growth rates of six species of freshwater Gymnamoebia

1980

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Laboratory growth rates of six species of Gymnamoebia, isolated from English chalk streams and cultured on bacteria, have been determined at four different temperatures. Generation times ranged from 4.46 to 33.3 h. A linear relationship between log specific growth rate and the reciprocal of the absolute temperature was demonstrated for four species. A significant regression of log generation time on log cell volume was obtained for data on amoebae in combination with data on ciliates taken from the literature. This regression may be used to predict the growth rates of other species of amoebae and ciliates of known cell volume.

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The Effects of Ethyl Alcohol on Growth and Respiration in Pelomyxa Carolinensis

Cited by 6 publications

References 10 publications

The Effects of Ethanol on Conjugation and Division in Paramecium caudatum*

The Effects of Ethanol on Conjugation and Division in Paramecium caudatum*

Growth and consumption rates of bacterivorous Antarctic naked marine amoebae

Laboratory growth rates of six species of freshwater Gymnamoebia

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