FlyBase curator comment: this entry is used to capture phenotypic information when the particular allele (or allele combination) used by the author could not be determined but the context of the experiment suggests that the phenotype being described is some kind of loss of function.
Mutant third instar garland cells have small lacunae lacking diaphragms, and have a substantially thickened basement membrane. Garland cell number is also reduced in the mutant larvae.
The level of uptake of a small dextran (10,000Da) is unaltered in third larval instar mutant garland nephrocytes compared to wild type, but there is a marked reduction in the uptake of a large dextran (500,000Da) compared to controls.
Mutant larvae show a greatly reduced viability after feeding with low concentrations of silver nitrate compared to control larvae.
