Deletion mapping of a new gustatory mutant inDrosophila melanogaster

Summary A gustatory mutant ofDrosophila melanogaster insensitive to the taste of salt has been isolated. Genetic crosses and a deletion mapping analysis show that this mutation, designatedgust-M₁ is located in the 93C_3–6-93D_6–7 region of the third chromosome.gust-M₁ is also insensitive to the taste of quinine sulfate. The behavior of this mutant may be explained by assuming thatgust-M₁ could be a mutation perturbing functions in the central nervous system affecting the responses to both compounds.