Efficacy of diatomaceous earth formulations admixed with grain against populations of Tribolium castaneum

Abstract

The efficacy of diatomaceous earth (DE) to control stored-products Coleoptera on stored grain was examined against several populations of the red flour beetle, Tribolium castaneum (Herbst).

Efficacy of rice husk ash against rice weevil and lesser grain borer on stored wheat

“…These values are higher than those of Insecto ® by 6.89, 1.0, and 34.3µm, respectively (Subramanyam et al, 1994;Arnaud et al, 2005).…”

“…The fact that RHA, with larger and less uniform particles was nearly as effective as Bularafa and Insecto® DEs, may probably indicate its potential for stored-product insect pest management. Bularafa DE has a silica content of 80.98% (Nwaubani et al, 2014); whereas Insecto ® has a silica content of 87.0% (Arnaud et al, 2005). The 87.1% silica content of RHA could be a major contributing factor in its high efficacy against S. oryzae.…”

New and Emended Descriptions of Gregarines From Flour Beetles (Tribolium Spp. And Palorus Subdepressus: Coleoptera, Tenebrionidae)

“…These insects have been used in ecological studies because of their ease of culture, as well as in research on parasite-induced host behaviors because of their role as intermediate hosts for helminths. Moreover, they have been studied in efforts to develop control methods (Shostak and Smyth, 1998;Yan et al, 1998;Pai and Yan, 2003;Arnaud et al, 2005). Flour beetles also represent interesting host-parasite systems in that all or most of the species, including both adults and larvae, are infected with gregarine parasites (Apicomplexa: Conoidasida: Gregarinasina: Eugregarinorida), and the presumed relationship among hosts provides a tractable laboratory model to explore experimentally the evolutionary constraints on host specificity.…”

Insecticidal Properties of Some Plant Extracts against Rust-Red Flour Beetle, Tribolium castaneum H.

“…Thus, showing a kind of physiological selectivity which takes place due to variations in the mode of action leading to variability in type of toxic materials, its concentrations and its response. Also the role of genetic factor in elucidating difference in responses and reactions should be considered (Upitis et al, 1973;Arnaud et al, 2005).…”