Advertisement

Hydrobiologia

, Volume 166, Issue 3, pp 277–283 | Cite as

Introduction and cage culture of exotic carps and their impact on fish harvested in Lake Begnas, Nepal

  • D. B. Swar
  • T. B. Gurung
Article

Abstract

The suitability of exotic carps namely Aristichthys nobilis (Bighead carp), Hypophthalmichthys molitrix (Silver carp), Ctenopharyngodon idellus (Grass carp), Cyprinus carpio (Common carp) and Labeo rohita (Rohu) in a sub-tropical lake was evaluated. The impact of their introduction on native fishes was also studied. After the introduction and cage culture of exotic carps the total harvest reached 92 kg·ha−1; an increase of 266% within eight years. The planktivorous bighead and silver carps were most successful. The harvest of the other three species was poor. Since the introduction of exotic carp the harvest of indigenous fishes declined by 42%. Considering the food habits of these fish, further stocking should be limited to bighead and silver carps to limit the adverse effects on the indigenous species.

Key words

Begnas Lake Aristichthys nobilis Hypophthalmichthys molitrix cage culture exotic carps Pokhara Valley 

Preview

Unable to display preview. Download preview PDF.

Unable to display preview. Download preview PDF.

References

  1. Fernando, C. H., 1977a. Fisheries of natural lakes and man-made reservoir. Proceeding of the Indo-Pacific Fisheries Council 17th Session, Section III: 9–12.Google Scholar
  2. Fernando, C. H., 1977b. Reservoir fisheries in southeast Asia; Past, present and future. Proceeding of the Indo-Pacific Fisheries Council 17th Session, Section III: 475–489.Google Scholar
  3. Fernando, C. H., 1980. Fisheries potential of man-made lakes in southeast Asia: some strategies for its optimization. Biotrop. Aniv. Publ. 25–38.Google Scholar
  4. Fernando, C. H., 1984. Reservoirs and lakes of southeast Asia (Oriental Region). In F. B. Taub (ed.) Lakes and Reservoirs. Elsevier Science Publishers B.V., Amsterdam: 411–446.Google Scholar
  5. Fernando, C. H. & J. I. Furtado, 1975. Reservoir fishery resources of southeast Asia. Bulletin of Fisheries Research Station, Department of Fisheries, Ceylon 26: 83–95.Google Scholar
  6. Fernando, C. H. & J. Holčik, 1982. The nature of fish communities: an important factor influencing fishery potential and yield of tropical lake and reservoir. Hydrobiologia 97: 127–140.Google Scholar
  7. Fernando, C. H. & J. Holčík, 1985. The nature of fish communities, an important factor influencing fishery potential and yield of lake and reservoir: A short summary of concept and its application. Verh. int. Ver. Limnol. 22: 2498–2501.Google Scholar
  8. Ferro, W., 1980. Data on the fishery in Pokhara Valley (Nepal) and their implications for the fishery management. J. Inst. Sc. 3: 221–236.Google Scholar
  9. Ferro, W., 1981/82. Limnology of Pokhara Valley Lakes (Himalayan Region, Nepal) and its implication for fishery and fish culture. J. Nepal Res. Center 5/6: 27–52.Google Scholar
  10. Ferro, W. & D. B. Swar, 1978. Bathymetric maps from three lakes in Pokhara Valley (Nepal). J. Inst. Sc. 1: 177–188.Google Scholar
  11. Ferro, W. & P. R. Badagami, 1980. On the biology of the commercially important species of fish of Pokhara Valley (Nepal). J. Inst. Sc. 3: 237–250.Google Scholar
  12. Frey, D. G., 1969. A limnological reconnaisance of Lake Lanao. Verh. int. Ver. Limnol. 17: 1090–1102.Google Scholar
  13. Hickel, B., 1973. Limnological investigations in Lakes of the Pokhara Valley, Nepal. Int. Rev. ges. Hydrobiol. 58: 659–672.Google Scholar
  14. Jhingran, V. G. & R. S. V. Pullin, 1985. A hatchery manual for the Common, Chinese and Indian Major Carps. Asian Development Bank, International Center for Living Aquatic Resource Management; 250pp.Google Scholar
  15. Liu, C. K., N. S. Chu & T. H. Wand, 1955. Piscicultural possibilities of reservoirs upon the headwaters of the Hwai River. Acta Hydrobiol. Sinica 1: 45–56.Google Scholar
  16. Liu, J. K., 1984. Lakes of the middle and lower basins of the Chang Jiang (China). In F. B. Taub (ed.) Lakes and reservoirs. Elsevier Science Publishers B.V., Amsterdam: 331–355.Google Scholar
  17. Lubinski, K. S., A. Van Vooren, G. Farabee, J. Janecek & S. D. Jackson, 1986. Common carp in the Upper Mississippi River. Hydrobiologia 136: 141–154.Google Scholar
  18. Nakanishi, M., 1986. Limnological study in Phewa, Begnas and Rupa lakes. In. Y. Ishida (ed.) Studies on distribution, adaptation and evolution of microorganisms in Nepal Himalyas (Second Report). Kuzo Dogura, Kyoto: 3–13.Google Scholar
  19. Reich, K., 1978. Lake Kinneret fishing in its development. Bamidgeh 30: 37–64.Google Scholar
  20. Swar, D. B., 1980. Present status of limnological studies and research in Nepal. In S. Mori & I. Ikusima (eds) Proceeding of the First Workshop for the Promotion of Limnology in developing countries. Kyoto: 43–47.Google Scholar
  21. Swar, D. B. & C. H. Fernando, 1980. Some studies on the ecology of limnetic crustacean zooplankton in Lakes Begnas and Rupa, Pokhara Valley, Nepal. Hydrobiologia 70: 235–245.Google Scholar
  22. Tapiador, D. D., H. F. Henderson, M. N. Delmendo & H. Tsutsui, 1977. Freshwater fisheries and agriculture in China. FAO Fisheries Technical Paper No. 168; 86pp.Google Scholar
  23. Zaret, T. M., 1974. The ecology of introduction — A case study from Central American lake. Environmental Conservation 1: 308–309.Google Scholar

Copyright information

© Kluwer Academic Publishers 1988

Authors and Affiliations

  • D. B. Swar
    • 1
  • T. B. Gurung
    • 1
  1. 1.Fisheries Development CenterBaidam, PokharaNepal

Personalised recommendations