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Abstract
Meiotic gynogenetic progeny in largemouth bass Micropterus salmoides have been obtained by inseminating largemouth bass eggs with UV-irradiated sperm from white bass Morone chrysops or striped bass Morone saxatilis and suppressing the second meiotic division by hydrostatic pressure. The sex composition of gynogenetic progeny was determined by dissection or ultrasound investigation of 1-year-old fish. Among the 21 fish analyzed, 7 fish (33.3%) were male and 14 fish (66.7%) were female. The presence of males in meiotic gynogenetic progeny suggests the existence of female heterogamety (WZ females, ZZ males) in largemouth bass.
Received January 19, 2012; accepted June 4, 2012
ACKNOWLEDGMENTS
Support for this study was provided by Kentucky's Regional University Trust Fund to the Aquaculture Program as Kentucky State University's Program of Distinction.