Laboratory Evaluation of Virulence of Heterorhabditid Nematodes to Plodia interpunctella Hübner (Lepidoptera: Pyralidae)
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چکیده
The Indianmeal moth, Plodia interpunctella (Hübner), is a cosmopolitan pest of stored products, infesting most commodities in warehouses and grain bins. We studied the susceptibility of Indianmeal moth adults and larvae to seven entomopathogenic nematode species and strains. The nematodes studied wereHeterorhabditis bacteriophora Poinar (HP88, Lewiston, andOswego strains); H. indicaPoinar,Karunakar, andDavid (Homl strain);H.marelatusLiuandBerry (PointReyes strain); H.megidisPoinar, Jackson, andKlein (UK211 strain); andH. zealandicaPoinar (NZH3 strain).Overall, the nematodes that had the highest virulence to larvae and adults of Indianmeal moth wereH. indica, H.megidis, andH.marelatus. Adult Indianmealmoths seemed tobemore susceptible to thenematodes than the larvae, and egg laying was signiÞcantly reduced by at least 44% in Indianmeal moths adults that survived exposure to the nematode strains. We conclude that H. indica, H. megidis, and H. marelatus should be studied further as potential biocontrol agents of Indianmealmoth in stored grains and processed commodities.
منابع مشابه
A wild strain of Plodia interpunctella (Hübner) (Lepidoptera: Pyralidae) from farm-stored maize in South Carolina: Effect of temperature on mating, survival, and fecundity
The purpose of this study was to develop age-specific survivorship and fecundity schedules for adult Plodia interpunctella (Hübner) relevant to maize storages, with special reference to the southeastern states (USA). Laboratory cultures were established with moths collected from farm-stored maize in South Carolina and maintained on cracked maize at 30 1C and 60% r.h. Age-specific schedules of s...
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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...
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