The soybean pod borer (Leguminivora glycinivorella Matsumura) successfully survives the winter because of its high expression of 70-kDa heat shock proteins (HSP70s) during its overwintering diapause. The amount of HSP70s is different under different environmental stresses. In this study, inducible heat shock protein 70 and its constitutive heat shock cognate 70 were cloned by RT-PCR and RACE. T...

A great diversity of pheromone structures are used by moth species (Insecta: Lepidoptera) for long-distance mating signals. The signal/response channel seems to be narrow for each species, and a major conundrum is how signal divergence has occurred in the face of strong selection pressures against small changes in the signal. Observations of various closely related and morphologically similar s...

Few useful microsatellites are available for population studies of the European corn borer, Ostrinia nubilalis (Hübner). An enrichment strategy was used to develop microsatellite markers for O. nubilalis, and over 500 positive clones were isolated. Seventy-five contained unique microsatellites, 10 of which were polymorphic with discernable polymerase chain reaction products. The 10 loci were su...

The genus Ostrinia includes two allopatric maize pests across Eurasia, namely the European corn borer (ECB, O. nubilalis) and the Asian corn borer (ACB, O. furnacalis). A third species, the Adzuki bean borer (ABB, O. scapulalis), occurs in sympatry with both the ECB and the ACB. The ABB mostly feeds on native dicots, which probably correspond to the ancestral host plant type for the genus Ostri...

The coffee berry borer, Hypothenemus hampei, is serious limitation in organic production Sao Tome Island the Gulf of Guinea, limited information regarding this species seasonal phenology on islands limits implementation biological control.In present study, seven plantations were monitored over two years to describe infestation patterns, penetration rates into berries, and mortality by entomopat...

The coffee berry borer, Hypothenemus hampei (Ferrari) (Coleoptera: Scolytidae), is the most important pest of coffee throughout the world and is present in most coffee producing countries (Le Pelley, 1968). The insect is very difficult to control due to its cryptic life cycle which involves egg laying inside the coffee berry, followed by the emergence of adult females that are already inseminat...

The European corn borer, Ostrinia nubilalis Hübner (Lepidoptera: Crambidae) has been a major pest of corn and other crops in North America since its accidental introduction nearly a hundred years ago. Wide adoption of transgenic corn hybrids that express toxins from Bacillus thuringiensis, referred to as Bt corn, has suppressed corn borer populations and reduced the pest status of this insect i...

Laboratory trials were carried out on the influence of low temperatures on adult survival, reproduction and egg hatch of the lesser grain borer, Rhyzopertha dominica (F.) (Coleoptera Bostrichidae). Temperatures of 3, 7, 12, 17 and 27 °C were studied. Results show the lethal time (LT) required for killing 5%, 50% and 95% of the tested insects was significantly affected by temperature but not adu...

A storage protein gene, CsSP2, was eloned and sequenced from the rice stem borer, Chilo st4npi'essalis. Analysis of the cDNA scquence revealed an open reading frame of2,118bp in length which encodcs an arylphorin-like protein with a calculated molccular weight of 83.7 kDa. The cxpression level of CsSP2 was higher in non-diapausing Iarvae than in diapausing larvae at 20"C. When diapausing larvae...

The yield loss simulation (YLS) and the MACROS LIQ.CSM models were used to simulate the effect of stem borer damage at a detillering rate of 5, 15, 30, 60% at vegetative, panicle initiation and grain filing stages, on yield of rice cultivar?s Ratna. This stem borer damage during vegetative and panicle initiation stages was not simulated appropriately by both the models. Relatively MACROS simul...