Generalist Predator Consumption of Armyworm (Lepidoptera: Noctuidae) and Effect of Predator Removal on Damage in No-Till Corn

Clark, M. Sean; Luna, John M.; Stone, Nicholas D.; Youngman, R. R.

doi:10.1093/ee/23.3.617

Cited by 105 publications

(46 citation statements)

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“…The no-till system drive to an increase in the ant richness, population density and foraging activities over time, which can guide to a more efficient biological control of the insects considered pests. Some authors found that the higher densities of these arthropods for controlling the crop pests reduced the number of the insecticide applications (Brust and House, 1990;Brust, 1991;Clark et al, 1994). Barbosa and Fernandes (2003) also observed greater richness, diversity, and equitability of the ant fauna in the understory areas with more complex E. urophylla.…”

Section: Discussionmentioning

confidence: 99%

Predacious activity of Ants (Hymenoptera: Formicidae) in conventional and in No-till agriculture systems

Lange

Fernandes

Raizer

et al. 2008

Braz. arch. biol. technol.

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Section: Discussionmentioning

confidence: 99%

Predacious activity of Ants (Hymenoptera: Formicidae) in conventional and in No-till agriculture systems

Lange

Fernandes

Raizer

et al. 2008

Braz. arch. biol. technol.

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“…Our first hypothesis, that beetles in fields with Bt corn will contain Cry1Ab, is well supported by our finding that the Cry1Ab was detected in a significantly higher proportion of P. chalcites and P. lucublandus, the two most common species, from fields with Bt corn than from fields without Bt corn. Laboratory feeding trials indicate that these two species may feed on armyworms (Pseudaletia unipuncta Haworth), which sporadically also occur as pests in corn (Clark et al, 1994). Both species are considered polyphagous predators of arthropods, but the degree of omnivory, if any, and the possible preferences among prey species in the field are poorly known.…”

Section: Discussionmentioning

confidence: 99%

Field evidence for the exposure of ground beetles to Cry1Ab from transgenic corn

Zwahlen

Andow

2005

Environ. Biosafety Res.

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Non-target organisms associated with the soil might be adversely affected by exposure to the Cry1Ab protein from Bacillus thuringiensis (Bt) in transgenic corn (Zea mays L.). To check for such exposure, we used ELISA to test for Cry1Ab in ground beetles collected live from fields with Bt corn residues and Bt corn (Bt/Bt), Bt corn residues and non-Bt crops (Bt/non-Bt), or non-Bt corn residues and non-Bt crops (non-Bt/non-Bt). In fields with Bt corn residues (Bt/Bt and Bt/non-Bt), Cry1Ab was present in all seven species of ground beetles examined (Agonum placidum, Bembidion rupicola, Clivina impressefrons, Cyclotrachelus iowensis, Harpalus pensylvanicus, Poecilus chalcites, and Poecilus lucublandus). For the two most abundant species, P. chalcites and P. lucublandus, the proportion of beetles with Cry1Ab was significantly higher in Bt/Bt fields (0.50-1.0) and Bt/nonBt fields (0.41-0.50) than in non-Bt/non-Bt fields (0.0). This is the first field evidence that some ground beetle species are exposed to Cry1Ab. The implications of exposure on the performance of these non-target organisms are unclear.

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“…Sotherton (1984) expõe que os carabídeos, estafilinídeos e tesourinhas são componentes da fauna associada ao solo das culturas, Lövei e Sunderland (1996) complementam que os carabídeos são considerados os mais importantes. Clark et al (1994) e Menalled et al (1999) concluem que devido à natureza predatória desses insetos, muitas espécies destacam-se como agentes de controle biológico de pragas.…”

Section: Introductionunclassified

Composição faunística de insetos predadores em fragmento florestal e em área de hortaliças na região de Jaboticabal, Estado de São Paulo

Cividanes

Souza

Sakemi³

2003

Acta Sci. Biol. Sci.

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RESUMO. Efetuou-se um levantamento populacional em área de fragmento florestal e em área de hortaliças, entre novembro de 1996 a fevereiro/1998, visando determinar as espécies de insetos predadores e a influência de fatores abióticos. A amostragem foi efetuada semanalmente por meio de armadilha luminosa, aplicando-se aos resultados análise faunística e correlação simples com temperatura, umidade relativa e precipitação. No fragmento florestal foi observado maior semelhança na abundância de espécies do que na área de hortaliças, mas neste hábitat capturou-se maior número de indivíduos (95%). As espécies Metius sp., Polpochila impressifrons (Dej.), Eulissus sp. e Doru sp. foram predominantes nas duas áreas, evidenciando a importância dessas espécies como predadoras de pragas de hortaliças. Arthrostictus speciosus (Dej.) e Leptotrachelus sp. predominaram no fragmento florestal, o mesmo ocorrendo com Paederus sp. na área de hortaliças. Esta espécie deve preferir locais abertos e quentes, enquanto A. speciosus e Leptotrachelus sp. podem estar melhor adaptadas para locais escuros e úmidos de florestas.Palavras-chave: Carabidae, dinâmica populacional, controle biológico, armadilha luminosa.ABSTRACT. Faunal composition of predator insects in forest fragment and area of vegetables in Jaboticabal region, state of São Paulo, Brazil. A population survey was carried out in a forest fragment and in an area of vegetables, from November/1996 to February/1998, aiming to determine the predator insect species and the influence of abiotic factors. The samples were taken weekly by light traps. The results were evaluated using faunistic analysis and simple correlation with temperature, relative humidity and rainfall. In the forest fragment higher similarity in the abundance of species was observed comparing to the area of vegetables, but the largest number of captured individuals (95%) occurred in this last habitat. Metius sp., Polpochila impressifrons (Dej.), Eulissus sp. and Doru sp. were predominant species in both areas, evidencing they may play an important role as pest predators in areas of vegetables. Arthrostictus speciosus (Dej.) and Leptotrachelus sp. predominated in the forest fragment, and the same was observed with Paederus sp. in the vegetable area. This species is probably adapted for open and hot places, while A. speciosus and Leptotrachelus sp. can be adapted for dark and humid places of forests.Key words: Carabidae, population dynamics, biological control, light trap. IntroduçãoSegundo Burel (1992) e Giller et al. (1997), as culturas agrícolas geralmente apresentam diversidade reduzida e abundância de fauna nativa devido às mudanças físicas causadas no ambiente, na uniformidade de cobertura vegetal e às práticas de cultivo. Já Dennis e Fry (1992) relatam que o tipo de exploração agrícola e a presença de diferentes habitats nas proximidades das culturas, podem alterar a diversidade e a abundância de insetos. Asteraki et al. (1995) e Dyer e Landis (1997) advertem que a existência de quebra-ventos, cercas-vivas e fragm...

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Generalist Predator Consumption of Armyworm (Lepidoptera: Noctuidae) and Effect of Predator Removal on Damage in No-Till Corn

Cited by 105 publications

References 0 publications

Predacious activity of Ants (Hymenoptera: Formicidae) in conventional and in No-till agriculture systems

Predacious activity of Ants (Hymenoptera: Formicidae) in conventional and in No-till agriculture systems

Field evidence for the exposure of ground beetles to Cry1Ab from transgenic corn

Composição faunística de insetos predadores em fragmento florestal e em área de hortaliças na região de Jaboticabal, Estado de São Paulo

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