Abstract
Gynogenesis was induced in silver carp, Hypophthalmichthys molitrix, to test female homogamety for sex determination and subsequently, to produce genetic females for androgen sex reversal. Heat shock (34°C) slightly increased the yield of gynogenetic diploids, but mild cold shock (22°C) was less productive than no-shock controls and severe cold shock (5°C) was lethal. All gynogens were females. Treatment with methyltestosterone suspended in liquid dimethylpolysiloxane was ineffective in inverting the phenotypic sex of silver carp but the androgen delivered from a silastic implant induced sex reversal of genetic females in some treatments. Males were produced when treatment was initiated at 79 days of age (110–120 or 125–135 mm, TL), 124 days of age (100–110 mm, TL) and 319 days of age (90–100 mm, TL). The period of gonadal differentiation was affected by growth rate and was correlated with successful reversal.
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
