Biological control with Trichogramma pretiosum increases organic maize productivity by 19.4%

Figueiredo, M. de L. C.; Cruz, Ivan; Silva, Rafael Braga da; Foster, John E.

doi:10.1007/s13593-015-0312-3

Cited by 44 publications

(19 citation statements)

References 23 publications

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“…Biological control can offer an economical and environmentally friendly alternative for controlling FAW. In the Americas, BC is based on a variety of egg and larval parasitoids and predators [17][18][19][20][21].…”

Section: Introductionmentioning

confidence: 99%

Parasitism of Locally Recruited Egg Parasitoids of the Fall Armyworm in Africa

Laminou

Ba²,

Karimoune³

et al. 2020

Insects

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The fall armyworm (FAW), Spodoptera frugiperda (J.E. Smith) (Lepidoptera: Noctuidae), is an insect native to the tropical and subtropical Americas that has recently spread to Africa, where it predominately attacks maize, sorghum and other plant species. Biological control is an environmentally friendly way of combatting the pest and contributes to an integrated pest management approach. In Africa, several trichogrammatid parasitoids and Telenomus remus Nixon (Hymenoptera: Platygastridae) have been found parasitizing eggs of the FAW. In Niger, the egg parasitoids encountered include Trichogrammatoidea sp. (Hymenoptera: Trichogrammatidae) and Telenomus remus Nixon. Parasitism of the FAW eggs by the two egg parasitoids was assessed in the laboratory, followed by field testing on sentinel eggs. In the laboratory, T. remus parasitized on average 78% of FAW eggs, compared to 25% for Trichogrammatoidea sp. Telenomus remus was able to parasitize egg masses that were fully covered with scales, while Trichogrammatoidea sp. parasitized only uncovered egg masses. On-farm releases of T. remus in sorghum fields caused up to 64% of FAW egg parasitism. Parasitized eggs yielded viable progeny, which can contribute to FAW egg parasitism build-up during the cropping season. Our findings lay the groundwork for the use of T. remus in augmentative releases against FAW in Africa.

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Section: Introductionmentioning

confidence: 99%

Parasitism of Locally Recruited Egg Parasitoids of the Fall Armyworm in Africa

Laminou

Ba²,

Karimoune³

et al. 2020

Insects

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“…Um exemplo da importân-cia de T. pretiosum é descrito por Nava e Nachtigal Com o aumento da utilização do milho Bt, o possível impacto negativo desta tecnologia sobre espécies não alvo se tornou uma preocupação por parte de agricultores e consumidores e, consequentemente, alvo de estudo da comunidade científica (Dabrowski, 2007 (Zhang et al, 2004;Wang et al, 2007). O parasitoide T. pretiosum, por estar associado à cultura do milho como importante inimigo natural de lepidópteros-praga, se constitui em um importante bioindicador do impacto da tecnologia Bt sobre organismos não alvo (Figueiredo et al, 2015) O bioensaio foi conduzido em sala com condi- As razões sexuais verificadas (Tabela 1) para T. pretiosum exposto ao pólen dos três híbridos de milho Bt foram consideradas adequadas para programas de controle biológico, uma vez que foram superio-res à taxa mínima satisfatória, que é de 0,5 (Navarro, 1998).…”

Section: Nesse Sentido a Entomofauna Benéfica Sobretudounclassified

COMPATIBILIDADE DE MILHO TRANSGÊNICO COM O PARASITOIDE Trichogramma pretiosum

Spagnol

Grützmacher

Castilhos

et al. 2017

RBMS

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RESUMO -Plantas de milho transgênicas que expressam toxinas da bactériaBacillus thuringiensis (Bt) são uma alternativa para o controle de insetos-praga na cultura. No entanto, estas toxinas podem ser encontradas no pólen do milho, e organismos não alvo, como os inimigos naturais, podem ser prejudicados. Assim, o objetivo deste trabalho foi avaliar o efeito do pólen de três híbridos de milho transgênicos sobre parâmetros biológicos de adultos do parasitoide de ovos Trichogramma pretiosum em condições laboratoriais. Fêmeas recém-emergidas de T. pretiosum foram individualizadas em tubos de Duran contendo como alimento mel acrescido do pólen dos híbridos de milho transgênico AG 8011 YG (Cry1Ab), AS 1551 VT PRO (Cry1A. 105 + Cry 2Ab2) e Status Viptera (Vip3Aa20), e de seus respectivos isogênicos convencionais. Diariamente, foram ofertados, em cada tubo, ovos de Anagasta kuehniella para parasitismo. Os parâmetros avaliados foram: longevidade das fêmeas expostas ao pólen, taxa de parasitismo total, taxa de emergência e razão sexual da progênie. Os híbridos transgênicos: AG 8011 YG (Cry1Ab), AS 1551 VT PRO (Cry1A. 105 + Cry 2Ab2) e Status Viptera (Vip3Aa20), bem como seus isogênicos convencionais, não causaram efeitos deletérios sobre a longevidade e capacidade de parasitismo das fêmeas de T. pretiosum expostas aos respectivos pólens. A emergência e razão sexual da progênie também não foram negativamente afetadas, possibilitando assim a compatibilização dos transgênicos avaliados com o controle biológico natural e aplicado exercido por este parasitoide. Palavras-chave: Bacillus thuringiensis, transgenia, manejo integrado de pragas, controle biológico, Zea mays. COMPATIBILITY OF TRANSGENIC CORN WITH THE PARASITOID Trichogramma pretiosumABSTRACT -Transgenic corn expressing Bacillus thuringiensis (Bt) toxins is an alternative for pest control in corn fields. However, some non-target organisms such as natural enemies can be impaired by corn pollen containing toxins. Therefore, the aim of this work was to evaluate the effect of the pollen from three transgenic corn varieties on biological parameters of the egg parasitoid Trichogramma pretiosum under laboratorial conditions. Emerged females of T. pretiosum were placed into Duran tubes and fed with honey + pollen of corn hybrids AG 8011 YG (Cry1Ab), AS 1551 VT PRO (Cry1A. 105 + Cry 2Ab2) and Status Viptera (Vip3Aa20), as well as their respective isogenic. Daily, eggs of Anagasta kuehniella were offered in each tube for parasitism. The parameters evaluated were longevity of females exposed to pollen, total parasitism, progeny emergency and sex ratio. The transgenic hybrids AG 8011 YG (Cry1Ab), AS 1551 VT PRO (Cry1A. 105 + Cry 2Ab2), Status Viptera (Vip3Aa20) and their isogenic showed no deleterious effect on longevity and parasitism capacity of T. pretiosum females exposed to respective pollen. Emergency and sex ratio from progeny were also not adversely affected, thus enabling the compatibility of the evaluated transgenic with biological control by this parasitoid.

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“…4 Timely release of natural enemies and uniform coverage are prerequisites for effective biological control; however, traditional biological control methods are inefficient, costly and give poor coverage. 5 At present, to achieve a particular effect, traditional methods of natural enemy delivery mainly use artificial inundation or inoculation release, through artificial fixed-point hanging bee cards or by placing bee boxes to fully cover farmland. 6 Wang et al 7 compared the control effects of different Trichogramma on the Asian corn borer through artificial release.…”

Section: Introductionmentioning

confidence: 99%

Biological control technology and application based on agricultural unmanned aerial vehicle (UAV) intelligent delivery of insect natural enemies (Trichogramma) carrier

Zhan

Chen

Wang

et al. 2021

Pest Management Science

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BACKGROUND: Agricultural pests and diseases affect grain yield and quality. In addition to the use of chemical agents, the biological control of diseases and insect pests has attracted more and more attention due to an urgent need for environmental protection. However, traditional operational methods do not integrate well with biological control technology. With the advantages of simple operation, low operating cost, high operating efficiency and wide application range, use of multirotor unmanned aerial vehicles (UAVs) in biological control is of great significance.RESULTS: An intelligent delivery system comprising an insect natural enemy (Trichogramma) capsule based on an M45 electric multirotor UAV was built to release Trichogramma ostriniae in corn fields under full autonomous mode. During operation, the M45 UAV can fly accurately in accordance with operational requirements; average deviation between the actual and planned routes was 0.24 m, the average flight speed was 9.18 m s −1 and the average altitude was 5.08 m. The effective coverage rate of natural enemies was 99.33% and the coverage redundancy was 36.75%. After delivery, an investigation into the field control effect showed an average control effect of 83.70%, which can result in effective pest control.CONCLUSION: A natural enemy carrier intelligent delivery system based on an M45 electric multirotor UAV was found to have good flight performance. In addition, natural enemies were evenly distributed, giving even coverage of the target fields.The system had a good control effect.

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Biological control with Trichogramma pretiosum increases organic maize productivity by 19.4%

Cited by 44 publications

References 23 publications

Parasitism of Locally Recruited Egg Parasitoids of the Fall Armyworm in Africa

Parasitism of Locally Recruited Egg Parasitoids of the Fall Armyworm in Africa

COMPATIBILIDADE DE MILHO TRANSGÊNICO COM O PARASITOIDE Trichogramma pretiosum

Biological control technology and application based on agricultural unmanned aerial vehicle (UAV) intelligent delivery of insect natural enemies (Trichogramma) carrier

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