The boll weevil, Anthonomus grandis grandis Boheman (Coleoptera: Curculionidae), is a serious pest of cultivated cotton, Gossypium hirsutum L., in the Americas, and reinfestation of zones from which they have been eradicated is of perpetual concern. Extensive arrays of pheromone traps monitor for reintroductions, but occasionally the traps collect nontarget weevils that can be misidentified by ...

The imported longhorned weevil, Calomycterus setarius Roelofs, is an occasional pest of soybean, Glycine max (L.), and can cause substantial defoliation of seedling soybean when the weevil is present in large numbers. Because weevil populations can reach high levels, the potential exists for significant seedling injury, so economic injury levels (EILs) are needed for imported longhorned weevil ...

The boll weevil,Anthonomus grandis grandisBoheman (Coleoptera: Curculionidae), is a serious pest of cultivated cotton,Gossypium hirsutum L., in the Americas, and reinfestation of zones from which they have been eradicated is of perpetual concern. Extensive arrays of pheromone traps monitor for reintroductions, but occasionally the traps collect nontarget weevils that can be misidentiÞed by scou...

There is a great demand for safe and effective alternative fumigants to replace methyl bromide and other toxic fumigants for postharvest pest control. Nitric oxide, a common signal molecule in biological systems, was found to be effective and safe to control insects under ultralow oxygen conditions. Four insect species including western flower thrips, Frankliniella occidentalis (Pergande) (Thys...

The southeastern boll weevil, the Mexican boll weevil, and the thurberia weevil are considered to be morphologically similar but behaviorally different variants of the same species, Anthonomus grandis Boheman. A polymerase chain reaction (PCR)-ampliÞed 9.2-kb section of the mitochondrial DNA was cleaved with restriction enzymes. RFLPs of weevils from three cotton growing locations in Texas and ...

Abstract Background Rice is the agricultural commodity with third highest worldwide production and losses in rice storage due to insect pests may drastically affect food availability for a large number of people. One its serious tropics “rice weevil”, Sitophilus oryzae . Although few effective fumigants are available, there global concern about environmental pollution, toxicity non-target organ...

Protein. starch. fat. sucrose. glucose. and fructose contents were analyzed in 22 com genotypes and correlated with food utiliz'ltion panlmeters and indices determined on developing rice weevil. Sirophillls 01}'zae (L.), reared on each com genotype. The larval period was reduced and heavier pupae developed from com with higher glucose content. Increascd levels of prOiein reduced amount of food ...

A new species of Meira Jacquelin du Val from Island of Elba, M. tedeschii sp. n., is described. Some taxonomically important characters, which allow for the separation of this new taxon from other closely related species, are illustrated.

Physiological and morphological changes in the ovarian system in rice weevils, Sitophilus oryzae (L.) (Coleoptera: Curculionidae), reared on wheat seeds were studied as a function of adult age, mating status, and nutrient availability. X-ray analysis was used to determine time of adult eclosion and the duration of development of pre-emergent weevils within the seeds, a process that lasted almos...