Observations on the longevity, instar durations, fecundity and growth in Alonella excisa (Fischer) (Cladocera : Chydoridae)


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Authors

  • Sumita Sharma
  • B K Sharma

Keywords:

Alonella excisa, Fecundity, Growth, Instar duration

Abstract

Alonella excisa (Fischer) passed through 2 pre-adult and 26 adult instars and indicated mean longevity of 73.4 days under laboratory conditions (at 19° - 23° C). The gravid instars exhibited uniform clutch sizer (2 eggs/brood) and registered cumulative fecundity of 46.0 eggs. Growth was rapid during pre-adult phase of this cladoceran and 90.6% of total length was attained till tenth instar Adult instars recorded longer durations pre-adult instars.

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Issue

Vol. 68 No. 1 (1998)

Section

Articles

License

The copyright of the articles published in The Indian Journal of Animal Sciences is vested with the Indian Council of Agricultural Research, which reserves the right to enter into any agreement with any organization in India or abroad, for reprography, photocopying, storage and dissemination of information. The Council has no objection to using the material, provided the information is not being utilized for commercial purposes and wherever the information is being used, proper credit is given to ICAR.

How to Cite

Sharma, S., & Sharma, B. K. (2012). Observations on the longevity, instar durations, fecundity and growth in Alonella excisa (Fischer) (Cladocera : Chydoridae). The Indian Journal of Animal Sciences, 68(1). https://epubs.icar.org.in/index.php/IJAnS/article/view/19298