Efeito de produtos fitossanitários utilizados na cultura do tomateiro (Lycopersicon esculentum Mill.) sobre Trichogramma pretiosum Riley, 1879 nas gerações F1 e F2 em ovos de Anagasta kuehniella (Zeller, 1879)

Carvalho, Geraldo Andrade; Parra, José Roberto Postali; Baptista, Gilberto Casadei de

doi:10.1590/s1413-70542003000200007

Cited by 3 publications

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“…Goulart et al (2012) also verified that triflumuron (0.096 g ai L -1 ) is harmless to both T. pretiosum and Trichogramma exiguum Pinto and Platner, 1978. Insect growth regulator (IGR) insecticides belong to the benzoylureas chemical class and these compounds are usually harmless for adult parasitoids of the genus Trichogramma. Its selectivity is probably related to the IGR mode of action since these insecticides act on the new cuticle formation of the insect as a chitin synthesis inhibitor, which does not occur in adult insects (Carvalho et al, 2003;2010b;Maia et al, 2010).…”

Section: Resultsmentioning

confidence: 99%

Impact of insecticides used to control Spodoptera frugiperda (J.E. Smith) in corn on survival, sex ratio, and reproduction of Trichogramma pretiosum Riley offspring

Souza

Carvalho

Moura

et al. 2013

Chilean J. Agric. Res.

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Corn (Zea mays L.) is cultivated in large areas and considered one of the world's major cereal crops. There are several arthropod pests that can reduce its production such as the fall armyworm, Spodoptera frugiperda (J.E. Smith) (Lep.: Noctuidae), which is considered to be the main pest for corn. Fall armyworm is primarily controlled by insecticides. The use of biological control agents to manage this pest is growing with an emphasis on the egg parasitoid Trichogramma pretiosum Riley (Hym.: Trichogrammatidae). Thus, the aim of this research was to evaluate the impact of the following insecticides (g ai L -1 ) beta-cypermethrin (0.03), chlorfenapyr (0.60), chlorpyrifos (0.96), spinosad (0.16), etofenprox (0.10), triflumuron (0.08), alfa-cypermethrin/teflubenzuron (0.0425/0.0425), and lambda-cyhalothrin/thiamethoxam (0.11/0.083) on survival, sex ratio, reproduction, and T. pretiosum offspring. Distilled water was used as a control. Commercial insecticide formulations were diluted in distilled water. Bioassays used Anagasta kuehniella eggs treated with insecticides which were afterwards exposed to parasitism. Bioassays were conducted under controlled conditions at 25 ± 2 ºC, 70 ± 10% RH, and 12:12 h photoperiod. Alfa-cypermethrin/teflubenzuron, beta-cypermethrin, chlorpyrifos, chlorfenapyr, spinosad, etofenprox, and lambda-cyhalothrin/thiamethoxam reduced parasitism capacity of maternal generation females as well as the percentage of insect emergence from the F1 generation. Only triflumuron was selective for T. pretiosum and can be recommended along with this parasitoid in fall armyworm management programs in corn.

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Section: Resultsmentioning

confidence: 99%

Impact of insecticides used to control Spodoptera frugiperda (J.E. Smith) in corn on survival, sex ratio, and reproduction of Trichogramma pretiosum Riley offspring

Souza

Carvalho

Moura

et al. 2013

Chilean J. Agric. Res.

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“…Geralmente, os métodos utilizados para o controle da traça-das-crucíferas e para outros insetos-praga, são avaliados isoladamente ou apresentando-se o efeito do método sobre o inimigo natural. Como exemplo, pôde-se verificar em diversas pesquisas onde tem sido avaliado o efeito de inseticidas naturais: óleo de nim sobre Trichogramma minutum Riley, 1879; extratos de meliáceas sobre Trichogramma pretiosum Riley, 1879 e inseticidas químicos sobre T. pretiosum (CARVALHO et al, 2001(CARVALHO et al, , 2002(CARVALHO et al, , 2003GONÇALVES-GERVÁSIO & VENDRAMIM, 2004;LYONS et al, 2003;MOURA et al, 2004MOURA et al, , 2005.…”

Section: Introductionunclassified

Interação tritrófica e influência de produtos químicos e vegetais no complexo: brássicas x traça-das-crucíferas x parasitóides de ovos

et al. 2008

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Objetivou-se avaliar a interação tritrófica no complexo hospedeiro-vegetal (brássicas) x praga/hospedeiro-natural Plutella xylostella Linnaeus x inseto-entomófago (parasitóides - Trichogrmma pretiosum Riley e T. exiguum Pinto & Platner), associada a alguns produtos químicos e vegetais com efeito inseticida, utilizando-se os cultivares de repolho verde - Chato de quintal e híbrido Midori; roxo - Roxo precoce e Híbrido roxo - TPC00682; e couve manteiga - Geórgia e hibrido Geórgia HS20, pulverizadas com os inseticidas: lufenuron (2,52 ml/100L) e deltametrina (32 ml/100L), os produtos vegetais óleo de nim a 0,16 % e extrato pirolenhoso a 3,0 %, controle (água). Foi avaliada a interação das cultivares com os compostos por meio da exposição de lagartas recém-eclodidas aos produtos, avaliando-se os insetos nas fases de desenvolvimento até a emergência dos adultos. Para avaliar o efeito desses compostos sobre os parasitóides, foram empregados ovos de uma geração F2 de P. xylostella oriunda de lagartas alimentadas com folhas de brássicas, pulverizadas com esses produtos. A associação de produtos químicos ou vegetais, com efeito inseticida, com as cultivares de brássicas permitiu o manejo mais eficaz, especialmente na interação extrato pirolenhoso x a cultivar de repolho Chato de quintal. Observa-se que a interação entre as cultivares e os produtos pode ser prejudicial à atuação do parasitóide Trichogramma, sendo necessária uma avaliação criteriosa para minimizar o efeito sobre inimigos naturais.

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Selectivity of insecticides used in corn crops to adult Trichogramma atopovirilia (Hymenoptera: Trichogrammatidae)

Maia¹,

Carvalho²,

Leite³

et al. 2010

Rev. Colomb. Entomol.

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The aim of this work was to evaluate the toxicity of the insecticides imidacloprid/ß-cyfluthrin (Connect 100/12.5 SC), chlorfenapyr (Pirate 240 SC), chlorpyrifos (Astro 450 EW), novaluron (Rimon 100 CE), spinosad (Tracer 480 SC) and triflumuron (Certero 480 SC), as used in corn crops (Zea mays), to parent generation females and to F1 and F2 generation specimens of Trichogramma atopovirilia. Eggs of Anagasta kuehniella were glued to cardstock strips and placed under a germicidal lamp to kill embryos. These were then sprayed with the chemical products using a Potter tower and exposed to parasitism 24, 48, and 96 hours after application of the compounds for a span of 24 hours. We evaluated the number of dead specimens and the number of eggs parasitized by parent generation females, as well as the percent emergence and parasitic capacity of the F1 and F2 generations. Chlorfenapyr, spinosad, chlorpyrifos, and imidacloprid/ß-cyfluthrin were moderately harmful to adult T. atopovirilia, while novaluron was slightly harmful. Triflumuron was harmless and could be used in integrated pest management programs intended to preserve adult T. atopovirilia in corn crops.

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Efeito de produtos fitossanitários utilizados na cultura do tomateiro (Lycopersicon esculentum Mill.) sobre Trichogramma pretiosum Riley, 1879 nas gerações F1 e F2 em ovos de Anagasta kuehniella (Zeller, 1879)

Abstract: RESUMO

Cited by 3 publications

References 1 publication

Impact of insecticides used to control Spodoptera frugiperda (J.E. Smith) in corn on survival, sex ratio, and reproduction of Trichogramma pretiosum Riley offspring

Impact of insecticides used to control Spodoptera frugiperda (J.E. Smith) in corn on survival, sex ratio, and reproduction of Trichogramma pretiosum Riley offspring

Interação tritrófica e influência de produtos químicos e vegetais no complexo: brássicas x traça-das-crucíferas x parasitóides de ovos

Selectivity of insecticides used in corn crops to adult Trichogramma atopovirilia (Hymenoptera: Trichogrammatidae)

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