Shows extremely reduced viability at 22oC and complete lethality at 18oC. Hemizygous escaper females are completely sterile. 5-10% of Catsupcs2 heterozygous adults have melanotic pseudotumours. Hemizygous females show an abnormal retention of eggs.
Eggs are tiny due to a failure to transport nurse cell content into the oocyte.
Homozygous females lay tiny eggs which remain unfertilized.
Schupbach.
Renamed from fs3 to cs2 upon discovery of cold-sensitive phenotype.