Length-weight relationship of male morphotypes of Macrobrachium rosenbergii (de Man) as a valid index for differentiating their developmental pathway and growth phases


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Authors

  • B Madhusoodana Kurup School of Industrial Fisheries, Cochin University of Science and Technology, Fine Arts Avenue, Cochin-682 016, India
  • M Harikrishnan School of Industrial Fisheries, Cochin University of Science and Technology, Fine Arts Avenue, Cochin-682 016, India
  • S Sureshkumar School of Industrial Fisheries, Cochin University of Science and Technology, Fine Arts Avenue, Cochin-682 016, India

Abstract

Length-weight relationship of three male morphot}?pes of Macrobrachium
rosenbergii (de Man) such as small male (SM), orange clawed male (OC), blue
clawed male (BC) and two transitional stages each of OC and BC viz., weak orange
clawed male (WOO and pre-transforming orange clawed male (t-SOC) of the
former and weak blue clawed male (WBC) and old blue clawed male (OBC) of the
latter were calculated. Analysis of covariance revealed that both the slope and
elevation were significantly different. Pair wise comparison clearly showed that
except between SM & OBC, WOC & SBC, WOC & t-SOC, WOC & WBC, t-SOC
& WBC and t-SOC & SBC, WBC & SBC regression coefficients were significantly
different in all other combinations at 1% level. Except WBC and SBC, regression
coefficients of all other morphotypes showed significant difference from the
isometric value of 3. Regression coefficients of various male morphotypes and their
intermediary stages conform to the earlier demarcation of male morphotype of
M. rosenbergii based on somatic growth and reproductive capability.

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Author Biographies

  • B Madhusoodana Kurup, School of Industrial Fisheries, Cochin University of Science and Technology, Fine Arts Avenue, Cochin-682 016, India
    School of Industrial Fisheries, Cochin University of Science and Technology, Fine
    Arts Avenue, Cochin-682 016, India
  • M Harikrishnan, School of Industrial Fisheries, Cochin University of Science and Technology, Fine Arts Avenue, Cochin-682 016, India
    School of Industrial Fisheries, Cochin University of Science and Technology, Fine
    Arts Avenue, Cochin-682 016, India
  • S Sureshkumar, School of Industrial Fisheries, Cochin University of Science and Technology, Fine Arts Avenue, Cochin-682 016, India
    School of Industrial Fisheries, Cochin University of Science and Technology, Fine
    Arts Avenue, Cochin-682 016, India

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Issue

Vol. 47 No. 4 (2000)

Section

Articles

License

The copyright of the articles published in Indian Journal of Fisheries vests with the Indian Council of Agricultural Research, who has the right to enter into any agreement with any organization in India or abroad engaged in reprography, photocopying, storage and dissemination of information contained in these journals. The Council has no objection in using the material, provided the information is being utilized for academic purpose but not for commercial use. Due credit line should be given to the ICAR where information will be utilized.

How to Cite

Kurup, B. M., Harikrishnan, M., & Sureshkumar, S. (2011). Length-weight relationship of male morphotypes of Macrobrachium rosenbergii (de Man) as a valid index for differentiating their developmental pathway and growth phases. Indian Journal of Fisheries, 47(4), 283-290. https://epubs.icar.org.in/index.php/IJF/article/view/8503