The insect growth regulator, fenoxycarb, ethyl [2-(4-phenoxyphenoxy)ethyl] carbamate, causes retrogression of the ovaries of mated queens of the red imported fire ant, Solenopsis invicta Buren. Fenoxycarb completely suppresses growth of the follicular epithelium, nurse cells, and cytoplasm/yolkplasm. Most developing eggs are resorbed and no new workers are produced. Thus, prolonged exposure of ...

MicroRNAs (miRNAs) regulate many physiological processes including body growth. Insulin/IGF signalling is the primary regulator of animal body growth, but the extent to which miRNAs act in insulin-producing cells (IPCs) is unclear. Here we generate a UAS-miRNA library of Drosophila stocks and perform a genetic screen to identify miRNAs whose overexpression in the IPCs inhibits body growth in Dr...

The present study has been conducted to investigate the effect of insect growth regulator BAY SIR 8514 on chitin and chitinase enzymes of 2 in star of Spodoptera littoralis larvae, the effect of sublethal doses, LC 25, LC 50 and LC90 shows a significant effect on antifeedant index, on the other hand larval treatment with the tested IGR doses revealed, certain histo-pathological symptoms such as...

Lethal and nonlethal effects of predation are likely to impact phenotypic traits potential prey that elude capture. Nonlethal on can include alterations in behavior or morphology response risk which may impair growth fitness. The application pesticide mosquito control during aquatic stages interact with stress alter density prey. Insect regulator (IGR) pyriproxyfen is a mainly prevents pupal-ad...

A new insect growth regulator, Hoe 522 (CME-134), was tested in the field in the northern Philippines for the control of diamondback moth, Plutella xylostella L which had developed resistance to a large number of insecticides. Hoe 522 was found to be highly effective against diamondback moth populations at all rates from 15 to 105 g Al/ha and performed significantly better than reference produc...

Juvenile hormone (JH) is responsible for controlling many biological processes. In several insect species JH has been implicated as a key regulator of developmental timing, preventing the premature onset of metamorphosis during larval growth periods. However, the molecular basis of JH action is not well-understood. In this review, we highlight recent advances which demonstrate the importance of...