Open AccessEffect of Genistein on the Growth and Reproductive Function of Male and Female Yellow Perch Perca flavescens
Author(s) -
And Kinarm Ko,
Malison Jeffrey A.,
Reed Jess D.
Publication year - 1999
Publication title -
journal of the world aquaculture society
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.655
H-Index - 60
eISSN - 1749-7345
pISSN - 0893-8849
DOI - 10.1111/j.1749-7345.1999.tb00319.x
Subject(s) - perch , genistein , biology , zoology , gonadosomatic index , vitellogenesis , endocrinology , medicine , weight gain , fish <actinopterygii> , fishery , body weight , oocyte , population , embryo , fecundity , demography , sociology
. We studied the effect of genistein, a weak estrogenic compound found in soybean products, on the growth and reproductive development of yellow perch Perca flavescens . Four diets were prepared: control, estradiol‐17β (E 2 ) at 10 μg/g diet (E10), and genistein at 7.5 and 0.75 mg/g diet (G7.5 and G0.75). Fish (initial weight = 13–15.5 g and initial total length = 105–111 mm) were fed to excess for 63 d. The E10 diet promoted weight gain in yellow perch of both sexes, whereas the G7.5 diet decreased weight gain in females. The growth of the G0.75 group was not different from either the E10 group or the control group. Among females, fish fed the E10 diet had the lowest plasma concentration of E 2 36 h after the last feeding of the study. The plasma concentration of E 2 did not differ among the males from the four treatments. The E10‐treated fish of both sexes had increased plasma concentration of alkali‐labile phosphoprotein phosphorous (ALPP) in both sexes, indicating that vitellogenesis had been induced. Neither genistein diet increased plasma (ALPP) concentration. Male but not female yellow perch fed the E10 diet had significantly lower gonadosomatic indices compared to control and genistein groups. These results suggest that genistein may have a positive effect on growth in yellow perch, but no apparent estrogenic effects on reproductive function.