A WHITE-EYE MUTANT OF PROTOPHOMIA-TERRAENOVAE (DIPTERA, CALLIPHORIDAE) - MODE OF INHERITANCE AND PHOTOPERIODIC RESPONSE

A spontaneous mutant, white, with the phenotype of white compound eyes was isolated from a laboratory culture of Protophormia terranovae (Ro bineau-Desvoidy) that originated from Obihiro, Japan. Standard genetic crosses showed that the white trait is controlled by an autosomal rec essive. The photoperiodic response for the induction of adult diapause was examined at different temperatures and light intensities. The wil d-type P. terraenovae showed a long-day photoperiodic response all con ditions examined. When the light intensity of the photophase was 500 o r 20,000 lux at 25 degrees C, white adults reproduced directly without diapause both under long-day and short-day conditions. Under 500 lux at 20 degrees C or under 0.5 lux at 25 degrees C, however, the white s train showed a long-day photoperiodic response.