Supplement. 16 Symposium: BIOLOGY AND CULTURE OF SILVERSIDES (PEJERREYES) A standard weight equation to assess the body condition of pejerrey Odontesthes bonariensis
DARÍO C. COLAUTTI1,2, MAURICIO REMES LENICOV1,3, GUSTAVO E. BERASAIN1
BIOCELL, Vol.30, Suppl.S, pp. 131-135, 2006
Abstract We developed a standard weight equation Ws to aid in the analysis of pejerrey Odonthestes bonariensis body condition over time and across populations using the relative weight index Wr. Weight length data were compiled from 73 populations of pejerrey (N=16.022) from the Argentine pampas region. We used the regression-line-percentile technique, which provides a 75th-percentile standard by length intervals of 10 mm, to develop the Ws equation. The proposed equation is log10 Ws=-5,267+3,163 log10 Lst; Ws is weight in grams and Lst is standard length in millimeters. This equation is proposed for use with pejerrey between 120 and… More >
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