Genetic investigations on the incompatibility in the Culex pipiens complex

摘要: In crosses between populations of the mosquito Culex pipiens different geographical origin three crossing types have been found (1) with normal offspring (2) reduced and (3) that show almost total incompatibility. case incompatible 99.9% developing embryos are lethal only about 0.1% hatch develop into fertile diploid females. The exceptional females has investigated by means marker genes Kuf, r, w, var, y ru. These from a oocyte or nucleus originated fusion pronucleus last polar body. This concluded frequency homozygous heterozygous females, equational separation distribution cross-over gametes in Based on genetical data it is argued induced meiotic parthenogenesis takes place. sperm does not play any part production embryos. After activation egg moves to center but succeed fuse pronucleus. As result starts haploid embryo few cases diploidy restored change process egg.