ArkN28/ArkP46 mutant males exhibit a marked increase in spermatogonial cyst death compared to controls.
ArkN28/Ark82 mutant males exhibit a marked increase in spermatogonial cyst death compared to controls.
Salivary glands are degraded by 24 hours after puparium formation (as occurs in wild-type controls) in ArkN28/ArkL46 mutants that develop normally.
ArkN28 mutants display severe defects during the spermatid individualization process. The cystic bulges are frequently reduced in size or appear flat due to a failure in the appropriate collection of the cytoplasm of the spermatids . The retained cytoplasm is clearly visualized as a trail along the entire length of what was supposed to have been the post-individualized portion of the spermatids. Frequently a large portion of the spermatid cytoplasm is retained in a 'mini' cystic bulge structure, which often contains part of the individualization complex. Waste bags are also reduced in size.