Abstract
Ova obtained from diploid grass carp females were inseminated with sperm from diploid and triploid males, during three consecutive spawning seasons (1986, 1987, 1988), with reproducible results. Fertilization success was significantly lower in diploid × triploid crosses (27, 38 and 25%) compared with diploid × diploid crosses (49, 84 and 82%). Hatching embryos from diploid × triploid crosses had significantly ( P < 0.05) smaller body and yolk sac areas, and utilized their yolk more slowly than embryos from diploid × diploid crosses. Most diploid × triploid embryos surviving to hatch, suffered from notochord deformities and died before exogenous feeding began. Survival of juveniles from diploid × triploid crosses from hatching to 5 months was 0.21% and 0.125% for 1987 and 1988, compared with 95% and 84%, for diploid × diploid crosses. Coulter Counter ploidy determination for nine (five in 1987, four in 1988) diploid × triploid juvenile survivors revealed a diploid genome.
Sign-in/Register to access full text options 
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.
