, Volume 54, Issue 3, pp 273–277 | Cite as

The biology of simocephalus acutirostratus king (Cladocera: Daphnidae)-hatchability of the parthenogenetic egg cultured in artificial media

  • N. Murugan


The development of the parthenogenetic egg of the daphnid, Simocephalus acutirostratus was studied in different artificial media. The hatchability is found to be 100% in 0.001 M to 0.01 M of sodium chloride. 100% hatchability is noticed in concentrations ranging from 0.001 M to 0.05 M of calcium chloride. Apart from minor fluctuations, a high percentage of hatchability is recorded when isotonic solutions of sodium and calcium chloride are mixed. The hatchability of the different stages of the embryo is studied in an artificial medium which contains various proportions of sodium chloride, potassium chloride and calcium chloride. The results are discussed and compared with those from an allied temperate form, Simocephalus vetulus (O. F. Muller).


Simocephalus hatchability 


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  1. Anderson, B. G. 1948. The apparent thresholds of toxity to Daphnia magna for chlorides of various metals when added to Lake Erie water. Trans. Am. Fish. Soc. 78, 97–112.Google Scholar
  2. Banta, A. M. 1938. Studies on the physiology, genetics and evolution of some Cladocera. 1st ed., 285 pp. Washington: Carnegie Inst. Publ. No. 513.Google Scholar
  3. Berger, E. 1930. Unterschiedliche Wirkungen gleicher Ionen und Ionengemische auf verschiedene Tierarten. Pflügers Arch. 223, 1–39.CrossRefGoogle Scholar
  4. Birge, E. A. 1918. Chapter XXII in Fresh Water Biology by Ward and Whipple. 1st ed., 1111 pp. Boston: Gilson Co.Google Scholar
  5. Hoshi, T. 1950a. Studies on physiology and ecology of plankton, III Changes in respiratory quotient during embryonic development of a daphnid, Simocephalus vetulus (O. F. Muller) Sci. Rep. Tôhoku Univ., Ser. IV (Biol) 18, 316–323.Google Scholar
  6. Hoshi, T. 1951. Studies on physiology and ecology of plankton, VII Hatchability of the summer egg of a daphnid, Simocephalus vetulus, cultured in artificial media. Sci. Rep. Tôhoku Univ., Ser. II (Biol) XIX, 145–151.Google Scholar
  7. Lévy, R. 1927a. Mode de préparation de la Daphnie permettant de faire battre son coeur en milieu artificiel. Compt. Rend. Soc. Biol. 97, 1600–1602.Google Scholar
  8. Lévy, R. 1927b. Sensibilité aux actions chimiques du coeur de la Daphnie préparée battant en milieu artificiel. Compt. Rend. Soc. Biol. 97, 1602–1605.Google Scholar
  9. Murugan, N. & Sivaramakrishnan, K. G. 1973. The biology of Simocephalus acutirostratus king (Cladocera: Daphnidae). Laboratory studies of the life span, instar duration, egg production, growth and stages in embryonic development. Fresh wat. Biol. 3, 77–83.CrossRefGoogle Scholar
  10. Obreshkove, V. & Fraser, A. W. 1940. Growth and differentiation of Daphnia magna eggs in vitro. Biol. Bull. 78, 428–436.CrossRefGoogle Scholar
  11. Rammner, W. 1933. Wird der Cladoceren Embryo vom Muttertier ernährt? Arch. Hydrobiol. 25, 692–698.Google Scholar
  12. Rey, P. 1935. Sur le devéloppement en milieu artificiel des parthénogénetiques des Cladocéres. Bull. Soc. zool. France, 60, 239–241 (cited from Ber. wiss. Biol. 35, 423; 1935).Google Scholar
  13. Rubinstein, D. L. 1927. Über den Einfluss der Reaktion auf die Giftigkeit und die antagonistischen Wirkungen der Salze. Pflügers Arch. 216, 82–99.CrossRefGoogle Scholar
  14. Rubinstein, D. L. 1928. Das Problem des physiologischen Ionenantagonismus Protopl. 4, 259–314.CrossRefGoogle Scholar

Copyright information

© Dr. W. Junk b. v. Publishers 1977

Authors and Affiliations

  • N. Murugan
    • 1
  1. 1.Department of ZoologyMadura CollegeMadurai-11India

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