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J Hered. 1988 Mar-Apr;79(2):89-92.

Production of YY rainbow trout males by self-fertilization of induced hermaphrodites.

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Laboratoire de Génétique des Poissons, CRJ-INRA, Jouy-en-Josas, France.


Dietary administration of various estrogens for three months from swim-up stage resulted in excess of females, the remainder of the treated groups consisting of males and hermaphrodites. Mature hermaphrodites were self-fertilized or mated with standard males and females. These hermaphrodites and some of the estrogen-treated females proved to be genetic males; the frequencies of males obtained from their ova averaged 76.6%, suggesting viability of the YY genotype. Four of nine tested males of those progenies provided all male offspring when mated with standard females.

[Indexed for MEDLINE]

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