Figure 4. Representative responses of the deterrent cell to 25 mM salicin in larvae with different genotypes.

Representative sensory responses of the deterrent cell in the medial styloconic sensillum on the maxillary galea to 25 mM salicin in the polyphagous silkworm Sawa-J·lem (A), normal silkworm Daiankyo (B), their F₁ progeny (C), and lem- and non-Ze- phenotypes in the BF₁ generation (D), and non-lem and Ze phenotypes in the BF₁ generation (E). Because an F₁ female was used in the backcross, crossing-over among the genes did not occur in the BF₁ individuals. Therefore, larvae with lem and non-Ze phenotypes possessed the genotype of lem pph +^Ze/lem pph +^Ze, and larvae with non-lem and Ze phenotype were +^lem +^pph Ze/lem pph +^Ze. Recordings were performed using 10 larvae with the same genotype, and it was confirmed that they showed similar patterns. Each response trace shows a duration of 0.3 s beginning 0.5 s after the onset of stimulation. Arrowheads in B, C, and D indicate spikes from the deterrent cell.