Abstract
Some patterns of age and geographical variation in fecundity indices were analyzed in three freshwater fishes (river perch, bream, and Sevan khramulya). A trend to increase in the ovarian relative weight and mature egg size with age has been revealed. Two species with a wide range (perch and bream) demonstrated a tendency to decrease in the ovarian relative weight and increase in the definitive oocyte weight in females of populations living in the geographical center of the range. The coefficient of correlation between the absolute individual fecundity and body weight of females was proposed as a population marker of the fish reproductive system.
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Original Russian Text © M.I. Shatunovskii, 2006, published in Izvestiya Akademii Nauk, Seriya Biologicheskaya, 2006, No. 2, pp. 244–247.
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Shatunovskii, M.I. Some patterns of age and geographical variation in fish fecundity. Biol Bull Russ Acad Sci 33, 195–198 (2006). https://doi.org/10.1134/S1062359006020166
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DOI: https://doi.org/10.1134/S1062359006020166