, Volume 208, Issue 1–2, pp 85–92 | Cite as

Breeding biology of the Louisiana red swamp crayfish Procambarus clarkii Girard in Lake Naivasha, Kenya

  • A. O. Oluoch


This paper describes the breeding biology of the Louisiana red swamp crayfish (Procambarus clarkii Girard) that has been introduced in a tropical lake, Naivasha. Notable differences in crayfish biology are found between the place of origin in Louisiana and lake Naivasha.

In Naivasha sexual maturity in females is reached at a larger size (42 mm carapace length (CL), 76 mm full length (FL)) than in males (40 mm CL, 71 mm FL). The corresponding figures for Chalmette area of Louisiana are 31–32 mm CL for both sexes and at Ben Hur Research Centre, Louisiana, 33 mm CL. The females weigh between 15 and 20 g at the onset of egg deposition. The corresponding Louisiana values are from 5 to 10 g. Crayfish in Naivasha as in Louisiana breed both inside burrows which are 10–70 cm deep, and on the sediment in shallow water at a depth of between ≥ 0.5 and 4 m. These observations suggest that reproduction is very much a lake edge activity. The number of breeding individuals in Naivasha varies with the trend of the water surface level. Sexually active females (form I) as judged from secondary sexual characters (appearance of basal hooks at the base of 3rd and 4th walking legs) persist throughout the year at no less than 60% of the adult male population. This is confirmed by the appearance of recently hatched juveniles (3.4 to 6.5 mm CL) in the water throughout the year. Similarly berried females in Naivasha are found throughout the year, though with peaks at irregular intervals. In Louisiana breeding takes place only from August through November with a single peak in October. The fecundity of crayfish in Naivasha is 433 (SE ± 21, N = 133) and there is a positive correlation between body length and egg number.

Key words

Procambarus clarkii breeding biology tropical lake Lake Naivasha 


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  1. Avault, J. W., Jr., L. de la Bretonne & E. Jaspers, 1970. Culture of crawfish, Louisiana's crustacean king. Am. Fish Farmer 1: 8–14.Google Scholar
  2. Avault, J. W., Jr., 1974. Crayfish. In A. J. Mclane (ed.) New York, Holt, Rinehart and Winston, N.Y.: 236–240.Google Scholar
  3. Beadle, L. C., 1932. Scientific results of the Cambridge Expedition to the East African lakes in relation to their fauna and flora. J. linn. Soc. Zool. 38: 157–211.Google Scholar
  4. Gaudet, J. J., 1977. Natural drawdown in Lake Naivasha, Kenya and the origin of papyrus swamps. Aquat. Bot. 3: 1–47.CrossRefGoogle Scholar
  5. Gaudet, J. J. & J. M. Melack, 1981. Major ion chemistry in a tropical African lake basin. Freshwat. Biol. 11: 309–333.Google Scholar
  6. Huner, J. V. & J. W., Jr. Avault, 1974. Crawfish for bait. Aquaculture & Fish Farmer 1: 12–17.Google Scholar
  7. Huner, J. V., 1975. Observations on the life histories of recreationally important crawfishes in Temporary habitats. Proc. Louisiana Acad. Sci. 38: 20–24.Google Scholar
  8. Jenkin, P. M., 1929. Biology of lakes in Kenya. Nature 124: 1574.Google Scholar
  9. Jenkin, P. M., 1936. Reports on the Percy Sladen expedition to some Rift Valley lakes in Kenya in 1929. Ann. Mag. nat. Hist. 18: 133–181.Google Scholar
  10. Kilham, P., 1971. Biogeochemistry of African lakes and rivers. Ph.D. thesis, Duke Univ., Durham, North Carolina, 199 pp.Google Scholar
  11. LaCaze, C. G., 1970. Crawfish farming. Louisiana Wildlife and Fish Comm., Fish. Bull. 7: 1–27.Google Scholar
  12. Leakey, L. S. B., 1931. East African lakes. Geogr. J. 77: 497–514.Google Scholar
  13. Litterick, M. R., J. J. Gaudet, J. Kalff & J. M. Melack, 1979. The limnology of an African lake. Lake Naivasha, Kenya. Paper presented at the SIL-UNEP workshop, Dec. 16–23, 1979, Nairobi, Kenya, 73 pp.Google Scholar
  14. Oluoch, A. O., 1983. A study on some aspects of the distribution, biology, ecology and fishery of crayfish (Procambarus clarkii Girard) population in L. Naivasha. M.Sc. thesis, Univ. Nairobi, Kenya, 199 pp.Google Scholar
  15. Parker, I. S. C., 1974. The status of the Louisiana red swamp crayfish (P. clarkii Girard) in Lake Naivasha. I.S.C. Parker Wildlife Ser., Nairobi, Kenya, 45 pp.Google Scholar
  16. Penn, G. H., Jr., 1943. A study of the life history of the Louisiana red swamp crayfish, Cambarus clarkii Girard. Ecology 24: 1–18.Google Scholar
  17. Richardon, J. L. & A. E. Richardson, 1972. History of an African Rift Lake and its climatic implications. Ecol. Monogr. 42: 499–534.Google Scholar
  18. Talling, J. F. & I. B. Talling, 1965. The chemical composition of African waters. Int. Revue ges. Hydrobiol. 50: 421–463.Google Scholar

Copyright information

© Kluwer Academic Publishers 1990

Authors and Affiliations

  • A. O. Oluoch
    • 1
  1. 1.Department of ZoologyUniversity of NairobiNairobiKenya

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