Length, weight, sex, gonad weight and maturity stage of Rutilus rutilus and Perca fluviatilis from the Ob River basin, Western Siberia
Description
Excel file contains data on the total length, standard length, total weight, eviscerated weight, sex, gonad maturity stage, and gonad weight of roach Rutilus rutilus and perch Perca fluviatilis sampled in 2011 and 2012 in the Ob River basin. Fish were collected in 12 lakes and 2 rivers using gill-nets with 22 and 28 mm mesh sizes. Measurements for a total of 250 roaches and 274 perches are given.
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Steps to reproduce
Each individual, one after the other, was immobilized by a stunning blow to the head. Fish lengths and total weight were quickly measured using a measuring board and digital scales. Then, a fish was subjected to cervical transection, dissected, and the sex and gonad maturity stage were determined visually. Gonads were excised and weighed. After that, abdominal and pericardia cavities were cleared, and the eviscerated weight was measured.