shps¹ is male sterile if in transheterozygosity with Df(3R)crb-F89-4, Df(3R)crb87-4, Df(3R)crb87-5, Df(3R)Exel6199, Df(3R)Exel8178 or Df(3R)P3-4-7, and is male semi-fertile if in transheterozygosity with In(3R)Ubx^7LLats^R or Df(3R)Exel6198.

shps¹ homozygous males (but not females) are near sterile: mating with wild-type females leads to severe decreases in egg fertilization, egg laying, in egg hatching rate, and leads to a moderate decrease in hatch-to-adult rate, as compared to heterozygous and wild-type controls. Wild-type females mated to shps¹ homozygous males exhibit severe decreases in the number of sperm stored in the seminal receptacle and spermatheca, but not in the uterus, and are less effective in suppressing female re-mating, but do not exhibit obvious differences in uterus morphology or in mating plug formation, as compared to females mated to controls males.

shps¹ homozygous males do not exhibit any significant changes in the number of sperm stored in seminal vesicles, as compared to controls; shps¹ sperm exhibit small but significant motility defects (i.e. beat frequency, beat speed and intensity index) before and after transfer to females, as compared to heterozygous controls.

1 hour or 24 hours after copulation, the amount of sheepish^sheepish sperm stored in the female sperm storage organs (seminal receptacle and spermatheca) was significantly less than the controls.

Females mated with sheepish^sheepish males lay significantly fewer inseminated eggs than controls.

jar^Hsp83.GFP, shps¹ has male sterile phenotype

jar^Hsp83.GFP, shps[+]/shps¹ has male semi-fertile phenotype