In vitro effects of juvenile hormone analog on wing disc morphogenesis under ecdysteroid treatment in the female-wingless bagworm moth Eumeta variegata (Insecta: Lepidoptera, Psychidae).

Female adults of the bagworm moth, Eumeta variegata, lack wings completely, whereas male adults of this species have functional wings. We previously found that ecdysteroid induces apoptotic events in the female wing rudiment of E. variegata in vitro, whereas the male wing discs cultured with 20-hydroxyecdysone (20E) underwent apolysis and then cell differentiation.

Female-specific wing degeneration is triggered by ecdysteroid in cultures of wing discs from the bagworm moth, Eumeta variegata (Insecta: Lepidoptera, Psychidae).

Female adults of the bagworm moth, Eumeta variegata, are completely wingless; by contrast, the male adults have functional wings. Sex-specific differences in the development of wing discs appear to arise during the 8th (penultimate) larval instar. We have previously found that the wing discs of female E.

Modulation of the ecdysteroid-induced cell death by juvenile hormone during pupal wing development of Lepidoptera.

Females of the tussock moth Orgyia recens have only vestigial wings, whereas the males have normal wings. We previously found that ecdysteroid induces both apoptotic events and phagocytotic activation in sex-specific and region-specific manners. To investigate whether different responses to ecdysteroid are controlled at the receptor level, we cloned ecdysteroid receptor isoforms, EcR-A and EcR-B1, in O.

Female-specific wing degeneration caused by ecdysteroid in the Tussock Moth, Orgyia recens: hormonal and developmental regulation of sexual dimorphism.

Females of the tussock moth Orgyia recens have vestigial wings, whereas the males have normal wings. During early pupal development, female wings degenerate drastically compared with those of males. To examine whether ecdysteroid is involved in this sex-specific wing development, we cultured pupal wings just after pupation with ecdysteroid (20-hydroxyecdysone, 20E).