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The dynamics of gonad growth and ascorbate status in yellow perch, Perca flavescens (Mitchill)
Author(s) -
Dabrowski K,
Ciereszko A
Publication year - 1996
Publication title -
aquaculture research
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.646
H-Index - 89
eISSN - 1365-2109
pISSN - 1355-557X
DOI - 10.1111/j.1365-2109.1996.tb01284.x
Subject(s) - biology , perch , gonadosomatic index , ascorbic acid , vitellogenesis , gonad , ovary , development of the gonads , vitamin c , percidae , vitamin , zoology , fecundity , endocrinology , medicine , fish <actinopterygii> , fishery , population , biochemistry , oocyte , food science , embryo , demography , sociology
Yellow perch, Perca flavescens (Mitchill), caught in the wild (Grand St Marys Lake, Ohio) and cultured in the laboratory were used to examine the relationship between gonad development and the concentration of ascorbic acid in ovaries, testes, liver and kidney. In wild fish the ovary had concentrations of ascorbate twice as high (75‐102 μ g g ‐1 ) as the testis (28‐48 μ g g ‐1 ), and when the differences in gonadosomatic indices between sexes were accounted for, females deposited 10‐fold more of this essential nutrient in gonads than did males. Yellow perch cultured intensively throughout the gonadal recrudescence had shown a decrease of ascorbate concentration in the kidney, liver and ovary during winter, most likely due to the low dietary level of the vitamin. Diet enrichment with ascorbic acid resulted in a dramatic increase of ascorbate in ovary and other tissues. Incorporation of ascorbic acid may take place during the late vitellogenesis, and this vitamin deserves to be studied as a quality indicator in fish eggs.