Abstract
Experiments were carried out to determine whether varying toxicity of natural blooms of Microcystis is due to: a) Microcystis-bacteria interactions b) an environmental effect c) the presence of more than one strain or species of Microcystis. Partial characterization of bacteria associated with unialgal cultures, and natural blooms indicated that no relationship exists between Microcystis and the occurrence of one or more types of bacteria. Examination of different axenic toxic cultures proved that toxicity resided in Microcystis only. To examine possibilities b and c, toxin extraction and mouse assay were examined and standardized. Environmental parameters had an influence on toxicity of toxic isolates, but even the highest possible dose of a non-toxic isolate injected (800 mg/kg) was innocuous whereas 20 mg/kg from a toxic isolate generally killed mice. Both toxic and non-toxic isolates lost colony habit soon, but only non-toxic isolates lost the ability to form gas vacuoles. Gas vacuole-less mutants of toxic Microcystis isolates were however, still toxic. A preliminary comparison of toxins extracted from several toxic isolates indicated that similar toxins were present. Many observations and experimental results supported the conclusion that toxic and non-toxic isolates of Microcystis belong to different taxons.
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References
Amann, M. J., and J. N. Eloff. 1980. A preliminary study on the toxins of different Microcystis strains. S. Afr. J. Sci. (In press).
Berti, T., and L. Cima. 1955. Einfluss der temperatur auf die pharmakologische Wirkung des chlorpromazins. Arzneimittel- Forsch. 5: 73.
Bliss, C. I. 1935. The calculation of the dosage-mortality curve. Ann. Appl. Biol. 22: 134–167.
Boyd, E. M., and M. M. Shanas. 1963. The acute oral toxicity of sodium chloride. Arch. Int. Pharmacodyn. Ther. 144: 86.
Chance, M. R. A. 1946. Aggregation as a factor influencing the toxicity of sympathomimetic amines in mice. J. Pharmacol. Exp. Ther. 87: 214.
Deem, A. W., and F. Thorpe. 1939. Toxic algae in Colorado. J. Am. Vet. Med. Assoc. 95: 542–544.
Deichmann, W. B., and J. J. Leblanc. 1943. Determination of the approximate lethal dose with about six animals. J. Ind. Hyg. Toxicol. 25: 415–417.
Dieke, S. H., and C. P. Richter. 1945. Acute toxicity of thiourea to rats in relation to age, diet, strain and species vari¬ation. J. Pharmac. Exp. Ther. 83: 195.
Dixon, W. J., and A. M. Mood. 1948. A method for obtaining and analyzing sensitivity data. J. Am. Stat. Assoc. 43: 109–126.
Elleman, T. C., I. R. Falconer, A. R. B. Jackson, and M. T. Runnegar. 1978. Isolation, characterization, and pathology of the toxin from a Microcystis aeruginosa (= Anaoystis cyanea) bloom. Aust. J. Biol. Sci. 31: 209–218.
Eloff, J. N., and D. N. Sadie. 1979. Unpublished results.
Golubic, S. 1979. Cyanobacteria (blue-green algae) under the bacteriological code? An ecological objection. Taxon 28 (4): 387–389.
Gorham, P. R. 1960. Toxic waterblooms of blue-green algae. Can. Vet. J. 1: 235–245.
Gorham, P. R. 1964. Toxic algae. Pages 307–336 in D. F. Jackson, ed., Algae and Man. Plenum Press, New York. 434 pp.
Gorham, P. R., and W. W. Carmichael. 1979. Phycotoxins from blue- green algae. Pure Appl. Chem. 52 (1): 165–174.
Grant, G. A., and E. O. Hughes. 1953. Development of toxicity in blue-green algae. Can. J. Public Health 44: 334–339.
Harris, R. E., and P. R. Gorham. 1956. (Unpublished) Cited in P. R. Gorham, 1964. Toxic algae. Pages 307–336 in D. F. Jackson, ed.. Algae and Man. Plenum Press, New York.
Hortobágyi, T. 1943. Beiträge zur Kenntnis der im Boglarer Seston, Psammon und Lasion lebenden algen des Balaton-Sees. Arb. Ung. Biol. Forschungsinstitut 15: 75–127.
Hortobágyi, T. 1947. New observations on some algae from Lake Balaton. Bot. Közlemenyek 44: 39–54.
Huber-Pestalozzi, G. 1929. Algologische mitteilungen. VI. Algen aus dem Lago di Muzzano. Arch. Hydrob. 20: 413–426.
Hughes, E. O., Gorham, P. R., and A. Zehnder. 1958. Toxicity of a unialgal culture of Microcystis aeruginosa. Can. J. Microbiol. 4: 225–236.
Ingram, W. M., and G. W. Prescott. 1954. Toxic fresh-water algae. Am. Mid. Nat. 52: 75–87.
Kessel, M., and J. N. Eloff. 1975. The ultrastructure and development of the colonial sheath of Microcystis marginata. Arch. Microbiol, 106: 209–214.
Komárek, J. 1958. Die taxonomische revision der planktischen blaualgen der Tschechoslowakei. In J. Komárek and M. Ettl, eds., Algologische Studien. Tschechoslowakische Akademie der Wissenschaften, Prague.
Krüger, G. H. J., and J. N. Eloff. 1978. Mass culture of Microcystis under sterile conditions. J. Limnol. Soc. S. Afr. 4 (2): 119–124.
Krüger, G. H. J., J. N. Eloff, and J. A. Pretorius. 1980. Morphological changes in toxic and non-toxic Microcystis isolates at different irradiance levels. (In press).
Lau, R. H., and W. F. Doolittle. 1979. Covalently closed circular DNAs in closely related unicellular Cyanobacteria. J. Bacteriol. 137: 648–652.
Louw, P. G. J. 1950. The active constituent of the poisonous algae. Microcystis toxica Stephens. S. Afr. Ind. Chemist 4: 62–66.
Olson, T. A. 1951. Toxic plankton. Pages 86–95 in Proceedings of Inservice Training Course in Water Works Problems, February 15–16. University of Michigan, School of Public Health, Ann Arbor, Michigan.
Paget, G. E., ed. 1970. Methods in Toxicology. Blackwell Scientific Publications, Oxford. 390 pp.
Pretorius, J. A. 1977. Groei van Microcystis aeruginosa op Agarmedium. M.Sc. Thesis. University of the Orange Free State, Bloemfontein, Republic of South Africa.
Quinton, R. M., and H. Reinert. 1968. Cited in J. K. Morrison, R. M. Quinton, and H. Reinert, 1968. The purpose and value of LD50 determinations. Pages 1–17 in E. Boyland and R. Goulding, eds.. Modern Trends in Toxicology, Vol. 1. Butter-worths, London.
Rippka, R., J. Deruelles, J. B. Waterbury, M. Herdman, and R. Y. Stanier. 1979. Generic assignments, strain histories and properties of pure cultures of Cyanobacteria. J. Gen. Microbiol. 111: 1–61.
Simon, R. D. 1978. Halobacterium strain 5 contains a plasmid which is correlated with the presence of gas vacuoles. Nature (Lond.) 273: 314–317.
Smith, F. A., W. L. Downs, H. C. Hodge, and E. A. Maynard. 1960. Screening of fluorine-containing compounds for acute toxicity. Toxicol. Appl. Pharmacol. 2: 54–58.
Stanier, R. Y., R. Kunisawa, M. Mandel, and G. Cohen-Bazire. 1971. Purification and properties of unicellular blue-green algae (order Chroococcales). Bacteriol. Rev. 35: 171–205.
Stephens, E. L. 1949. Microcystis toxica sp. nov.: a poisonous alga from the Transvaal and Orange Free State. Trans. R. Soc. S. Afr. 32(1):105–112.
Steyn, D. G. 1945. Poisoning of animals by algae (scum and water- bloom) in dams and pans. Union of South Africa, Department of Agriculture and Forestry, Government Printer, Pretoria. 9 pp.
Thompson, W. R. 1947. Use of moving averages and interpolation to estimate median-effective dose. I. Fundamental formulas, estimation of error, and relation to other methods. Bacteriol. Rev. 11: 115–145.
Thomson, W. K., A. C. Laing, and G. A, Grant. 1957. Toxic algae. IV. Isolation of toxic bacterial contaminants. Can. Defence Research Board, Defence Research Kingston Laboratory. Report No. 51, Project No. D52–20–20–18. Ottawa. 9 pp.
Toerien, D. F., W. E. Scott, and M. J. Pitout. 1976. Microcystis toxins: isolation, identification, implications. Water S. A. (Pretoria) 2: 160–162.
Walsby, A. E. 1977. Absence of gas vesicle protein in a mutant of Anabaena flos-aquae. Arch. Microbiol. 114: 167–170.
Weil, C. S. 1952. Tables for convenient calculation of median effective dose (LD50 or ED50) and instructions in their use. Biometrics 8: 249–263.
Wheeler, R. E., J. B. Lackey, and S. A. Schott. 1942. Contribution on the toxicity of algae. Public Health Rep. 57: 1695–1701.
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Eloff, J.N., Van Der Westhuizen, A.J. (1981). Toxicological Studies on Microcystis . In: Carmichael, W.W. (eds) The Water Environment. Environmental Science Research. Springer, Boston, MA. https://doi.org/10.1007/978-1-4613-3267-1_25
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