Ecdysteroids, or molting hormones, have been proven to be key differentiation regulators for epidermal cells in the postembryonic development of arthropods. Regulators of cell proliferation, however, remain largely unknown. To date, no diffusible insect peptidic growth factors have been characterized. Molecules structurally related to insulin have been discovered in insects, as in other eucaryo...

A field test was conducted whereby adult Tribolium confusum (du Val), the confused flour beetle, were exposed in Petri dishes lined with filter paper and containing 0–2000mg of flour, to a pyrethrin–CO2 aerosol inside an empty warehouse. Applications were made according to label directions, and beetles were exposed to the aerosol for 2 h. After exposure, knockdown was assessed, and beetles were...

The oviposition behavior of the Indian meal moth, Plodia interpunctella (Hübner) (Lepidoptera: Pyralidae), a major insect pest of durable stored foods, was studied in small experimental arenas under laboratory conditions using videography, and a time budget analysis of its behaviors was documented. Resting gravid females typically became active shortly after the start of the scotophase. The cha...

Some octopamine agonists were found to suppress the calling behavior of the stored product Indian meal moth, Plodia interpunctella. Compounds were screened using a calling behavior bioassay using female P. interpunctella. Four active derivatives, with inhibitory activity at the nanomolar range, were identified in order of decreasing activity: 2-(1-phenylethylamino)-2-oxazoline > 2-(2-ethyl,6-me...

Three experiments of 60 days duration were conducted in post larval stage of Indian white shrimp, Fenneropenaeus indicus, to explore the appropriate protein: lipid ratios in their diets. A common ingredient mixture consisting of; fish meal, shrimp meal, ground nut oil cake, cholesterol, lecithin, vitamins and minerals blended with chicken egg albumin, tapioca flour and cellulose (filler) was us...

The major pests of cabbage, Brassica oleracea var. capitata on Guam are diamondback moth, Plutella xylostella; cabbage webworm, Hellula undalis; cutworm, Spodoptera litura; cabbage cluster caterpillar, Crocidolomia pavonana; the fleahopper, Halticus tibialis and aphids. In the past, Chinese cabbage, Brassica chinensis cv. Tempest for C. pavonana; radish, Raphanus sativus cv. Minowase Summer Cro...

Abstract Background Indian meal moth, Plodia interpunctella (Hübner) (Lepidoptera: Pyralidae) is the dominant pest on stored products throughout world. As an alternative to chemical insecticides, entomopathogens can be natural suppressors for populations. For this reason, study of existing in population a contributes decision-making process controlling that pest. In present study, characterizat...

three experiments of 60 days duration were conducted in post larval stage of indian white shrimp, fenneropenaeus indicus, to explore the appropriate protein: lipid ratios in their diets. a common ingredient mixture consisting of; fish meal, shrimp meal, ground nut oil cake, cholesterol, lecithin, vitamins and minerals blended with chicken egg albumin, tapioca flour and cellulose (filler) was us...

Ragweed (Ambrosia artemisiifolia L.) is an invasive plant species from the American continent, which has actively penetrated communities, displacing local of cultivated and weed vegetation. The uncontrolled development widespread distribution ragweed in South Russia are associated with absence natural enemies this weed. not only a competitor plants but also causes allergic diseases. moth (Tarac...