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Juvenile hormone (JH) given at pupariation inhibits bristle formation and causes pupal cuticle formation in the abdomen of Drosophila melanogaster due to its prolongation of expression of the transcription factor Broad (BR). In a microarray analysis of JH-induced gene expression in abdominal integument, we found that Krüppel homolog 1 (Kr-h1) was(More)
In holometabolous insects, Krüppel homolog 1 (Kr-h1) and broad (br) are key players in the juvenile hormone (JH) regulation of metamorphosis: Kr-h1 is an early JH-response gene, while br is a transcription factor that directs pupal development. Thrips (Thysanoptera) are classified as hemimetabolous insects that develop directly from nymph to adult, but they(More)
The western flower thrips, Frankliniella occidentalis (Pergande), is difficult to control because of high insecticide resistance. In this study, susceptibility to major insecticides was examined in two Japanese strains (H-1 and KC) and a Chinese strain (BJ) using a leaf-dipping method. All three strains were resistant to permethrin and acetamiprid at(More)
In phylogenetically ancestral taxa of termites (the so-called lower termites), at least one soldier emerges and is maintained longitudinally in each incipient colony. However, in apical taxa (the so-called higher termites), the developmental pathway and regulation of soldiers in incipient colonies currently remain unknown. We therefore examined soldier and(More)
Scale insects have evolved extreme sexual dimorphism, as demonstrated by sedentary juvenile-like females and ephemeral winged males. This dimorphism is established during the post-embryonic development; however, the underlying regulatory mechanisms have not yet been examined. We herein assessed the role of juvenile hormone (JH) on the diverging(More)
The endoparasitoid wasp, Meteorus pulchricornis (Wesmael), introduces virus-like particles [M. pulchricornis VLP (MpVLP)] and venom into its lepidopteran host larvae upon oviposition. These wasp-associated factors are considered to help impair some host functions including immune defense. To obtain the major protein repertoire of the MpVLP and venom that(More)
scalloped (sd) plays a key role in concert with vestigial (vg) in wing development in Drosophila melanogaster Meigen. We previously showed that as well as its conserved role in wing formation in the 28-spotted ladybird beetle Henosepilachna vigintioctopunctata (Fabricius), sd has a novel function in pupal ecdysis. However, the molecular mechanism(More)
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