IDEAS home Printed from https://ideas.repec.org/a/wfi/wfnaga/38359.html
   My bibliography  Save this article

Comparative study of hatching rates of African catfish (Clarias gariepinus Burchell 1822) eggs on different substrates

Author

Listed:
  • Macharia, S.K.
  • Ngugi, C.C.
  • Rasowo, J.

Abstract

The hatching rates of African catfish (Clarias gariepinus) eggs on four natural substrates: the roots of Nile cabbage (Pistia stratiotes), water hyacinth (Eichhornia crassipes), pond weed (Ceratophyllum dermasum) and green grass leaves (Commelina sp.), and four artificial substrates: sisal mats, nylon mats, papyrus mats and kakaban mats, was assessed. Concrete slabs were used as control. The natural substrates performed better than the artificial ones. Pistia roots gave the best mean hatching rate of 66.2 ▒ 3.62%. Green grass leaves were second with a mean rate of 54.0 ▒ 3.46%, water hyacinth was third with 49.7 ▒ 3.16% and Ceratophyllum fourth with a mean of 13.0 ▒ 2.37%. Concrete slabs gave a mean rate of 18.6 ▒ 2.8%, sisal mats 18.6 ▒ 2.0%, papyrus 12.2 ▒ 1.2% and kakaban 11.8 ▒ 1.9%. Nylon mats were the last, with a mean rate of 4.0 ▒ 0.7%. The best performing natural substrates were those with the ability to float and thin fibrous roots that seemed to allow higher aeration of the eggs during incubation. The cost of using natural substrates was minimal.

Suggested Citation

  • Macharia, S.K. & Ngugi, C.C. & Rasowo, J., 2005. "Comparative study of hatching rates of African catfish (Clarias gariepinus Burchell 1822) eggs on different substrates," Naga, The WorldFish Center, vol. 28(3/4), pages 23-26.
    • Handle: RePEc:wfi:wfnaga:38359
    as

    Download full text from publisher

    File URL: http://hdl.handle.net/20.500.12348/1951
    Download Restriction: no
    ---><---

    References listed on IDEAS

    as
    1. Dugan, P., 2003. "Investing in Africa: the WorldFish Center's African strategy in summary," Naga, The WorldFish Center, vol. 26(3), pages 4-8.
    2. Charo, H. & Oirere, W., 2000. "River-based artificial propagation of the African catfish Clarias gariepinus: an option for the small fish farmer," Naga, The WorldFish Center, vol. 23(1), pages 14-16.
    Full references (including those not matched with items on IDEAS)

    Most related items

    These are the items that most often cite the same works as this one and are cited by the same works as this one.
    1. Akpaniteaku, R.C. & Weimin, M. & Xinhua, Y., 2005. "Evaluation of the contribution of fisheries and aquaculture to food security in developing countries," Naga, The WorldFish Center, vol. 28(1/2), pages 28-32.

    More about this item

    Keywords

    Hatching; Seed production; Fish eggs; Africa; Kenya; Clarias gariepinus;
    All these keywords.

    JEL classification:

    • Q00 - Agricultural and Natural Resource Economics; Environmental and Ecological Economics - - General - - - General

    Statistics

    Access and download statistics

    Corrections

    All material on this site has been provided by the respective publishers and authors. You can help correct errors and omissions. When requesting a correction, please mention this item's handle: RePEc:wfi:wfnaga:38359. See general information about how to correct material in RePEc.

    If you have authored this item and are not yet registered with RePEc, we encourage you to do it here. This allows to link your profile to this item. It also allows you to accept potential citations to this item that we are uncertain about.

    If CitEc recognized a bibliographic reference but did not link an item in RePEc to it, you can help with this form .

    If you know of missing items citing this one, you can help us creating those links by adding the relevant references in the same way as above, for each refering item. If you are a registered author of this item, you may also want to check the "citations" tab in your RePEc Author Service profile, as there may be some citations waiting for confirmation.

    For technical questions regarding this item, or to correct its authors, title, abstract, bibliographic or download information, contact: William Ko (email available below). General contact details of provider: https://edirc.repec.org/data/wfishmy.html .

    Please note that corrections may take a couple of weeks to filter through the various RePEc services.

    IDEAS is a RePEc service. RePEc uses bibliographic data supplied by the respective publishers.