Parasitism by
Trichogramma
spp. (Hymenoptera: Trichogrammatidae) in Relation to Nantucket Pine Tip Moth (Lepidoptera: Tortricidae) Egg Density and Location

McCravy, Kenneth W.; Berisford, C. Wayne

doi:10.1093/ee/27.2.355

Cited by 17 publications

(15 citation statements)

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“…They also found signiÞcantly higher survival in the indoxacarb treatments than in the lambda-cyhalothrin treatment. Indoxacarb may be a valuable option for R. frustrana control because of its low toxicity to the natural enemies tested in this study and to T. pretiosum, which is also an important R. frustrana egg parasitoid (McCravy and Berisford 1998).…”

Section: Resultsmentioning

confidence: 99%

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Susceptibility of Adult Hymenopteran Parasitoids of the Nantucket Pine Tip Moth (Lepidoptera: Tortricidae) to Broad-Spectrum and Biorational Insecticides in a Laboratory Study

Nowak

McCravy

Fettig

et al. 2001

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Currently, there is an elevated interest in reducing feeding damage caused by the Nantucket pine tip moth, Rhyacionia frustrana (Comstock), a common regeneration pest of loblolly pine, Pinus taeda L. The toxicity of several insecticides was tested in a laboratory against four common R. frustrana parasitoids. There were no differences in parasitoid mortality between the control and indoxacarb treatments. However, the pyrethroids, permethrin and lambda-cyhalothrin, caused significantly more mortality initially (up to 240 min exposure time) than other insecticides. Spinosad was less toxic than the pyrethroids initially, but the spinosad related mortality increased with time until it reached a level similar to the pyrethroids. For the most part, spinosad and the pyrethroids caused more mortality than the control and indoxacarb treatmtents within the 1-d sample period. These results may have important implications for decisions concerning which insecticides are best suited for reducing pest damage while conserving natural enemies in timber and agricultural systems. Large-scale field trials are required to further define the impacts of these insecticides on natural enemies.

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Section: Resultsmentioning

confidence: 99%

“…Shelves were placed in Þne mesh (0.35 mm) Lumite screen enclosures (Synthetic Industries, Gainesville, GA), 1.8 m 3 in size, as in McCravy and Berisford (1998). A ßuorescent light source was placed at one end of the cages to attract emerging parasitoids.…”

Section: Methodsmentioning

confidence: 99%

Susceptibility of Adult Hymenopteran Parasitoids of the Nantucket Pine Tip Moth (Lepidoptera: Tortricidae) to Broad-Spectrum and Biorational Insecticides in a Laboratory Study

Nowak

McCravy

Fettig

et al. 2001

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“…In general, variation in intra-and interpatch host density is known to affect parasitoid foraging behavior and success (Hassell 1982). In studies of Trichogramma spp., increased numbers of host eggs within patches have been shown to have a positive effect on host patch location (Morrison et al 1980;Kfir 1983;Reznik and Umarova 1991;McCravy and Berisford 1998;Barnay et al 1999) and foraging activity (Nordlund et al 1981).…”

Section: Trichogrammamentioning

confidence: 99%

Host-Foraging Success of Three Species of Trichogramma (Hymenoptera: Trichogrammatidae) in a Simulated Retail Environment

Grieshop¹,

Flinn²,

Nechols³

et al. 2007

Journal of Economic Entomology

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“…An important consideration when developing release guidelines is to deÞne and understand how habitat complexity inßuences Trichogramma. For example, a high level of habitat complexity has been shown to negatively affect Trichogramma in a variety of natural and artiÞcial systems, including tree branches and crowns (McCravy and Berisford 1998); maize, Zea mays L., and wax paper models Prokrym 1990, Andow andOlson 2003); pine needles and paper models (Lukianchuk and Smith 1997); and artiÞcial plant models of varying structural complexity . In stored grain, Schö ller et al (1994) demonstrated that Trichogramma were unable to penetrate more than several centimeters into bulk wheat.…”

mentioning

confidence: 99%

Effects of Shelf Architecture and Parasitoid Release Height on Biological Control of <I>Plodia interpunctella</I> (Lepidoptera: Pyralidae) Eggs by <I>Trichogramma deion</I> (Hymenoptera: Trichogrammatidae)

Grieshop

Flinn²,

Nechols

et al. 2006

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The effects of shelving type, packaging, and release height on success of Trichogramma deion Pinto & Oatman (Hymenoptera: Trichogrammatidae) parasitizing Plodia interpunctella (Hübner) (Lepidoptera: Pyralidae) eggs was studied under laboratory conditions. In trials on multipletiered gondola-type or open shelving units, with or without packaging, foraging success was evaluated by comparing parasitism and total mortality rates of sentinel egg disks among shelves after a single point-release of T. deion. Results showed that T. deion parasitized more egg disks and killed more total eggs on open shelves than on gondola shelving. The presence of packaging had no effect on parasitoid foraging on open shelves; however, packaging did interfere with parasitism of P. interpunctella eggs on gondola shelving. Egg parasitism and mortality patterns among shelves were not as evenly distributed on gondola-type shelving compared with open shelving. On gondola shelves without packages, changing the release point of T. deion from the middle to the lowest shelf shifted the distribution of parasitism toward the floor. Gondola shelving, especially in the presence of packaging, reduced foraging efficiency of T. deion for P. interpunctella eggs. Thus, to attain adequate control of P. interpunctella, it may be necessary to use two release heights on gondola shelving.

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Parasitism by Trichogramma spp. (Hymenoptera: Trichogrammatidae) in Relation to Nantucket Pine Tip Moth (Lepidoptera: Tortricidae) Egg Density and Location

Cited by 17 publications

References 0 publications

Susceptibility of Adult Hymenopteran Parasitoids of the Nantucket Pine Tip Moth (Lepidoptera: Tortricidae) to Broad-Spectrum and Biorational Insecticides in a Laboratory Study

Susceptibility of Adult Hymenopteran Parasitoids of the Nantucket Pine Tip Moth (Lepidoptera: Tortricidae) to Broad-Spectrum and Biorational Insecticides in a Laboratory Study

Host-Foraging Success of Three Species of Trichogramma (Hymenoptera: Trichogrammatidae) in a Simulated Retail Environment

Effects of Shelf Architecture and Parasitoid Release Height on Biological Control of <I>Plodia interpunctella</I> (Lepidoptera: Pyralidae) Eggs by <I>Trichogramma deion</I> (Hymenoptera: Trichogrammatidae)

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