Studies on length-weight and length-length relationships of a catfish Eutropiichthyes vacha Hamilton (Schilbeidae: Silurifo-

Authors

  • A.N. Soomro 2*, , Department of Fresh Water Biology and Fisheries, University of Sindh, Jamshoro-76080, Sindh, Pakistan
  • H. Suzuki Laboratory of Aquatic Resource Science, Fisheries Faculty, Shimoarata 4-50-20 Kagoshima University, Kagoshima 890-0056 Japan
  • S.I.H. Jafri Laboratory of Aquatic Resource Science, Fisheries Faculty, Shimoarata 4-50-20 Kagoshima University, Kagoshima 890-0056
  • W.A. Baloch Laboratory of Aquatic Resource Science, Fisheries Faculty, Shimoarata 4-50-20 Kagoshima University, Kagoshima 890-0056 Japan
Abstract:

Present study describes the length-weight (LWR) and length-length (LLR) relationships of a freshwater catfish Eutropiichthyes vacha Hamilton from Indus River, Sindh, Pakistan. A total of 281 specimen of E. vacha were collected from fisherman?s catch from February 2005 to January 2006, are used for this study. The parameters a and b of the length-weight relationship were calculated as W= aLb are presented. The values for allometric coefficient b of the LWR were close to isometric value for male (b = 3.159) and combined values for both sexes (b = 3.053). However, it suggested negative allometric growth for females (b = 2.973). Results for LLRs indicated that these are highly correlated (r2 > 0.9) P< 0.0001.

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Journal title

volume 5  issue 2

pages  143- 145

publication date 2007-04-01

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