maxillary palpus & macrochaeta
100% of brrbp-2/brnpr-3 larvae are able to pupate, but ~15% die as early pupae. 80% of these survive to late pharate adult stage, with ~20% failing to eclose. brrbp-2 females show slightly reduced levels of oviposition compared to wild-type females. brrbp-2 flies show the same susceptibility to methoprene as wild-type flies.
DVM number is reduced (a deficit in thoracic muscle precursors), as is the flight performance.
Heterozygotes with brrbp-5 display reduced mechanosensory bristles on the maxillary palps and indentations on the surface of the eye.
Morphological abnormalities: 15--100% penetrance of bristle abnormalities under T(1;2)dorvar7 variegation.
Reduced bristle number on palpus, faded wings and swollen abdomen. Rare survivors when heterozygous with Df(1)RA19, lethal phase is after the formation of imaginal organs.
Homozygotes and males survive with fewer than normal bristles on the palpus; when raised at 29oC, females exhibit faded wings and swollen abdomens; when raised at 18oC males have faded wings. brrbp-2/Df(1)RA19 females virtually lethal; females carrying brrbp-2 and any of the other 'rbp' alleles are completely viable when reared at 18oC, but at higher temperatures most die and escapers have reduced bristles on the palpus, shortened bristles on the scutellum, shrivelled or swollen abdomen shrivelled wings and eyes with crumpled surface.
brrbp-2/brnpr-3 has lethal - all die during P-stage phenotype, enhanceable by Met3/Met3
Met27, brrbp-2 has lethal - all die during P-stage phenotype
Met27, brrbp-2/brrbp-1 has lethal - all die during P-stage phenotype
The lethality is enhanced in brrbp-2/brnpr-3 Rst(1)JH3/Rst(1)JH3 double mutants compared to brrbp-2/brnpr-3 mutants, with no flies surviving beyond the pupal stage. While 86% of brrbp-2/brrbp-2, Rst(1)JH27/+ flies survive to adulthood, <2% of brrbp-2/brrbp-2, Rst(1)JH27/Rst(1)JH27 flies survive this far, with most dying during the pharate adult stage. brrbp-2/brrbp-1, Rst(1)JH27/Rst(1)JH27 flies are also prepupal/early pupal lethals. Expression of the Rst(1)JH+tSt-H.hs transgene can rescue the lethality of brrbp-2/brrbp-2, Rst(1)JH27/Rst(1)JH27 or brrbp-2/brrbp-1, Rst(1)JH27/Rst(1)JH27 flies. brrbp-2/brrbp-2, Rst(1)JH27/Rst(1)JH27 female escapers show strong reductions in oogenesis.
Complementation is based on lethality.