Insertion approximately 400bp upstream of mbl.
Mutant females show reduced mating success compared to control females. The level of courtship activity elicited in wild-type males by mutant females is comparable to that elicited by control females. The mutant females are approached by males, who attempt to copulate, but in most cases, without success. The mutant females show different behaviour in response to courting males compared to control females; although decamping is the most prevalent response pattern of the females in boht cases, the mutant females show flying and jumping significantly more often that wild-type females, in addition to decamping.
mblchst in transheterozygous combination with mblchst-exC18, mblchst-exC67, mblchst-exC106, mblchst-exC71, mblchst-exC3, mblchst-exC24, mblchst-exC110, mblchst-exC45, mblk05507b, mblE27, mblE127, mblk07110 or mblk07103 shows reduced female sexual receptivity compared to controls.
mblchst in transheterozygous combination with mblchst-r1, mblchst-exC1, mblchst-exC2, mblchst-exS5, mblchst-exS14, mblchst-exC16, mblchst-exS45, mblchst-exC100, mblchst-exC20, mblchst-exS31, mblchst-exS86, mblchst-exC92, mblchst-exC99, mblE2563-12 or mblPP2 shows normal female sexual receptivity.
mblchst has abnormal courtship behavior | recessive | female phenotype, non-suppressible by za
mblchst/mblchst-exC3, za has abnormal courtship behavior | female phenotype
mblchst/mblchst-exC45, za has abnormal courtship behavior | female phenotype
za has no affect on the sexual receptivity of homozygous mblchst females.
za ; mblchst-exC3/mblchst and za ; mblchst-exC45/mblchst females show reduced sexual receptivity compared to controls.
Precise excision of the insertion completely reverts the reduced mating success of mutant females.