Host Range of the Gypsy Moth (Lepidoptera: Lymantriidae) Pathogen
Entomophaga maimaiga
(Zygomycetes: Entomophthorales) in the Field Versus Laboratory

Hajek, Ann E.; Butler, Linda; Walsh, Scott; Silver, Julie C.; Hain, Fred P.; Hastings, Felton L.; Odell, Thomas M.; Smitley, D. R.

doi:10.1093/ee/25.4.709

Cited by 65 publications

(42 citation statements)

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“…These authors also note that Entomophaga maimaiga is known only from gypsy moth in its native Japan. In other samples, though, they did find low to moderate infectivity in native Lymantriidae (Hajek et al 1996, Hajek et al 2000), especially if the larvae spend time on the ground or in the leaf litter. The highest field incidence for any native species was 36% for Dasychira obliquata during a peak gypsy moth year.…”

Section: Apparent Impacts From Past (1950s-1980s) Control Programsmentioning

confidence: 82%

“…Hajek et al (1995) documented that some native Lepidoptera in several families can become infected by Entomophaga maimaiga under extreme laboratory conditions not meant to mimic field exposure. However, Hajek et al (1996) found only two cases of infection (Malacosoma disstria (Lasiocampidae), Catocala ilia (Noctuidae)) among 1,790 native caterpillars in one large, random study with high rates of infection among gypsy moth larvae. These authors also note that Entomophaga maimaiga is known only from gypsy moth in its native Japan.…”

Section: Apparent Impacts From Past (1950s-1980s) Control Programsmentioning

confidence: 98%

“…The highest field incidence for any native species was 36% for Dasychira obliquata during a peak gypsy moth year. In most years, no infected native Lymantriidae were recovered (Hajek et al 1996, Hajek et al 2003. They also found single cases of infection in a gelechiid (n=84) and in the noctuid Sunira bicolorago (n=20) among 358 caterpillars from samples in and near forest leaf litter (Hajek et al 2000).…”

Section: Apparent Impacts From Past (1950s-1980s) Control Programsmentioning

confidence: 99%

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Effects of gypsy moth establishment and dominance in native caterpillar communities of northern oak forests

Timms

Smith

2011

Can Entomol

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Little research has addressed the impacts of invasive-species establishment on native forest insect communities. Such information is lacking even for gypsy moth, Lymantria dispar (L.) (Lepidoptera: Erebidae), the most thoroughly studied invasive forest insect. We investigated the ecological impacts of gypsy moth on native species at sites in north-central Ontario, Canada, with and without significant histories of gypsy moth defoliation over a 2-year period. Patterns in native forest caterpillar communities are described using measures of species diversity and multivariate analysis. We documented a transition from low-level to dominant gypsy moth populations. Sites with different gypsy moth outbreak histories exhibited differences in rank-abundance distributions and dominance structures in the first year of the study; by the second year, gypsy moth was dominant at sites of both types irrespective of their previous defoliation history. Contrary to our predictions, we found that gypsy moth outbreak history had no significant effects on native caterpillar community diversity or structure. However, sites with currently high gypsy moth abundance demonstrated significant shifts in late-season caterpillar community structure. Our results suggest that observed community differences were due to the presence of a highly abundant folivore, and not to permanent shifts in the native community because of the introduction of an invasive species.

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Section: Apparent Impacts From Past (1950s-1980s) Control Programsmentioning

confidence: 82%

Section: Apparent Impacts From Past (1950s-1980s) Control Programsmentioning

confidence: 98%

Section: Apparent Impacts From Past (1950s-1980s) Control Programsmentioning

confidence: 99%

See 1 more Smart Citation

Effects of gypsy moth establishment and dominance in native caterpillar communities of northern oak forests

Timms

Smith

2011

Can Entomol

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show abstract

“…In fact, they can even be poor predictors of which species are susceptible to infection (James et al 1995, Hajek et al 1996. We found environmental conditions played a significant role in the results of greenhouse trials, a role that was much greater than the effects of the exposure methods tested.…”

Section: Discussionmentioning

confidence: 71%

“…The initial determination of host ranges and infection rates of prospective entomopathogenic fungi are usually conducted in the laboratory. Unfortunately, large discrepancies between field and laboratory results have made it difficult to predict the real effects these fungi have on both target and nontarget insects (Latge et al 1983, Dorschner et al 1991, James et al 1995, Hajek et al 1996.…”

mentioning

confidence: 99%