Efeito do número de adultos de Trichogramma galloi Zucchi, 1988 (Hymenoptera: Trichogrammatidae) liberados em semanas sucessivas, para o controle de Diatraea saccharalis (Fabricius, 1794) (Lepidoptera: Crambidae)

Broglio-Micheletti, Sônia Maria Forti; Pereira-Barros, Josean Leite; Santos, A; Carvalho, Lúcyo Wagner Torres de; Carvalho, Luiz Henrique Torres de; Oliveira, Carlos José Tavares de

doi:10.1590/s1413-70542007000100008

Cited by 7 publications

(4 citation statements)

References 11 publications

(9 reference statements)

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…In other cases, greater density of parasitoids can increase intraspecific competition and reduce parasitism, as reported for other eulophid species, e.g., P. elaeisis and T. diatraeae (Pereira et al 2010, Favero et al 2013. However, even in the field, the probability for a parasitoid to find a non-parasitized host decreased with the parasitoid density increases, as observed for T. galloi and D. saccharalis eggs (Broglio-Micheletti et al 2007).…”

Section: Discussionmentioning

confidence: 55%

“…However, larvae after the first or second molt (3-8 days) burrow into the stalk, where they remain during the whole development (40-45 days) gaining partial protection from sprays (Antigo et al 2013). In Brazil, the egg parasitoid Trichogramma galloi Zucchi and the larval endoparasitoid C. flavipes have been widely used against sugarcane borers (Broglio-Micheletti et al 2007, Vacari et al 2012. Nevertheless, populations of Diatraea spp.…”

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Tetrastischus howardi density and dispersal toward augmentation biological control of sugarcane borer

et al. 2018

View full text Add to dashboard Cite

The number of Tetrastischus howardi (Olliff) females to be released and their dispersion should be known, that way, used D. saccharalis pupae as sentinel host to measure parasitism as function of the release density of the parasitoid and its location in the field. Two sets of trials were run aiming first to define the number of parasitoids to be released and the dispersal of the parasitoid using plots in sugarcane commercial fields, respectively. Pieces of sugarcane stalk holding sentinel pupae were taken to the field and exposed to parasitism in both trials. The parasitoid was released at the rate of 20, 40, 80, and 160 females per sentinel pupa, except for the control plot without releasing. The parasitism rate was calculated based on the recovered pupae after 96 h of exposure time from releasing the parasitoids. The models estimated the best parasitism rate by releasing 102 parasitoids per pupa. In the second trial, sentinel pupae were arranged in five subsequent circles corresponding 4, 8, 12, 16, and 20 m around the central parasitoid releasing point at rate of 4, 8, 12, 16, and 18 pupae per circle. The mean estimated dispersal distance was 7.64 m, with a covering area of 80.07 m 2 . Based on these findings, release of T. howardi is recommended in 125 points per hectare of sugarcane at rate of 102 females per pupa of the pest aiming to achieve homogeneous distribution and parasitism.

show abstract

Section: Discussionmentioning

confidence: 55%

Section: Introductionmentioning

confidence: 99%

Tetrastischus howardi density and dispersal toward augmentation biological control of sugarcane borer

et al. 2018

View full text Add to dashboard Cite

show abstract

“…2000). In that sense, Broglio‐Micheletti et al. (2007) tested the release of 100 000, 200 000 and 250 000 adults of Trichogramma galloi Zucchi per hectare of sugar cane during successive weeks on the control of Diatraea saccharalis Fabricius and found that the best release rates were between 150 000 and 175 000 parasitoids adults per hectare.…”

Section: Discussionmentioning

confidence: 99%

Parasitism of cotton leafworm Alabama argillacea eggs by Trichogramma pretiosum in commercial cotton fields

Bastos

Torres

Suinaga

2010

J Applied Entomology

View full text Add to dashboard Cite

Release of natural enemies in commercial fields is challenging and has been inconsistent in the results achieved. This work discusses the augmentative releases of Trichogramma pretiosum to control the cotton leafworm (CLW) Alabama argillacea and also examines the parasitoid–host interaction under grower field conditions. The treatments consisted of fields with and without releases of T. pretiosum set up in Primavera do Leste and Campo Verde Counties, MT, Brazil, during three different seasons (2003 and 2004 dry and 2004 regular summer seasons). Trichogramma wasps were weekly released in the treated fields throughout the entire sampling period (14–15 week period) at a rate of 100 000 wasps per hectare. One‐way repeated measures analysis of variance was performed for the number of parasitized eggs, followed by a meta‐analysis procedure to determine the contribution of T. pretiosum release on overall parasitism. In addition, regression analysis was conducted with each season’s data sets to study the relationship of the host density and parasitism response by T. pretiosum. The overall results of Trichogramma augmentative releases did not result in significant increase of CLW egg parasitism beyond the natural parasitism in the areas studied. However, based on Cohen’s d effect sizes from the meta‐analysis, the parasitism rate was greater in fields under T. pretiosum releases during four out of 15 weeks surveyed. The parasitism of CLW eggs by T. pretiosum exhibited host density‐dependence only in one out of three seasons surveyed. These findings are encouraging as they are evidence that T. pretiosum is able to maintain a considerable level of parasitism under commercial field conditions, highlighting their potential value in large‐scale commercial areas of cotton as previously found at the small and diverse farming scale. Future studies should address the potential of early‐season, low density releases of the parasitoid.

show abstract

“…Esse comportamento dificulta seu manejo, pois o inseto fica protegido contra as pulverizações de inseticidas. O controle biológico de D. saccharalis é extremamente importante, especialmente quando se emprega o endoparasitoide larval Cotesia flavipes (Cameron) (Hymenoptera: Braconidae) (BROGLIO-MICHELETTI et al, 2007). No entanto, Pinto et al (2003) relataram que o controle utilizando o parasitoide de ovos Trichogramma, tem como grande vantagem o fato desse inimigo natural poder reduzir a população da praga antes que algum dano seja causado à cultura.…”

Section: Introductionunclassified

Repelência de produtos fitossanitários usados na cana-de-açúcar e seus efeitos na emergência de Trichogramma galloi

Antigo¹,

Oliveira²,

Carvalho³

et al. 2013

Rev. Ciênc. Agron.

View full text Add to dashboard Cite

RESUMO-Trichogramma galloi Zucchi é um importante parasitoide de Diatraea saccharalis (Fabricius), principal praga da cana-de-açúcar. Como vários produtos químicos são utilizados no manejo dessa cultura, o presente trabalho objetivou avaliar a repelência de alguns produtos fitossanitários sobre adultos do parasitoide T. galloi e seu efeito na emergência dos descendentes. Os ensaios foram conduzidos em câmara climática a 23 ± 2 ºC, UR de 60 ± 10% e fotofase de 14h. Os produtos avaliados foram: inseticidas clorantraniliprole, etiprole, tiametoxam, triflumurom, lambda-cialotrina+tiametoxam, fipronil e Metarhizium anisopliae, herbicidas clomazone e diurom+hexazinona e os reguladores de crescimento de plantas sulfometurom-metílico e trinexapaque-etílico, nas maiores concentrações recomendadas à cana-de-açúcar. Para a avaliação de repelência de cada produto, realizou-se teste com livre chance de escolha, onde 30 ovos de D. saccharalis foram imersos em água destilada e outros 30 na calda do produto a ser testado. Cada uma das massas de ovos destes dois tratamentos foi transferida para um tubo de vidro, sendo os mesmos interligados por um conector de papel com um orifício central, por onde um tubo menor foi acoplado para liberação de três fêmeas de T. galloi, previamente alimentadas. O delineamento experimental foi inteiramente casualizado, com quinze repetições para cada produto avaliado. Avaliou-se a repelência, o número médio de ovos parasitados por fêmea e a emergência. Clorantraniliprole, triflumurom e sulfometurom-metílico não repeliram o parasitoide e nem afetaram o número de ovos parasitados. Para a emergência, verificou-se que os produtos M. anisopliae, tiametoxam, clomazone, diurom+hexazinona e sulfometurom-metílico não afetaram essa característica biológica.

show abstract

Efeito do número de adultos de Trichogramma galloi Zucchi, 1988 (Hymenoptera: Trichogrammatidae) liberados em semanas sucessivas, para o controle de Diatraea saccharalis (Fabricius, 1794) (Lepidoptera: Crambidae)

Cited by 7 publications

References 11 publications

Tetrastischus howardi density and dispersal toward augmentation biological control of sugarcane borer

Tetrastischus howardi density and dispersal toward augmentation biological control of sugarcane borer

Parasitism of cotton leafworm Alabama argillacea eggs by Trichogramma pretiosum in commercial cotton fields

Repelência de produtos fitossanitários usados na cana-de-açúcar e seus efeitos na emergência de Trichogramma galloi

Contact Info

Product

Resources

About