Toxicity of insecticides used in melon crops to Opius scabriventris (Hymenoptera: braconidae)

Araújo, Elton Lúcio; Nogueira, Carlos Henrique Feitosa; Bezerra, Carlos Eduardo Souza; Costa, Ewerton Marinho

doi:10.14393/bj-v31n5a2015-26408

Cited by 6 publications

(8 citation statements)

References 18 publications

(17 reference statements)

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“…The toxicity of the insecticides was evaluated through contact of the parasitoids with the internal surface of freshly sprayed plastic containers (8 cm height x 8 cm diameter) (defined herein as "arenas"), according to the methodology employed by Araujo et al (2015). These arenas had openings at their top and side parts, closed with a fine mesh screen in order to allow the air circulation inside.…”

Section: Methodsmentioning

confidence: 99%

“…In several regions worldwide, parasitoids are deemed as important biological controlling agents that assist in regulating the population of leafminers of the genus Liriomyza (Liu et al, 2011). In Brazil, the larva-pupa endoparasitoid Opius scabriventris (Nixon, 1955) (Hymenoptera: Braconidae) is reported as one of the main natural enemies of the leafminers (Costa-Lima et al, 2014;Araujo et al, 2015). Besides Brazil, this parasitoid is mentioned in several countries of South America, such as Argentina, Peru or Chile and, in some regions where O. scabriventris was reported, the natural parasitism rates were over 50% (Salvo & Valladares, 1995).…”

Section: Introductionmentioning

confidence: 99%

“…Information related to the toxicity of these insecticides on the parasitoids of leafminers is still scarce. In Brazil, it has only been reported that the abamectin and cartap insecticides are lethal while the cyromazine is selective to the O. scabriventris parasitoid, at the maximum doses that are recommended for controlling the leafminer in the melon crop (Araujo et al, 2015).…”

Section: Introductionmentioning

confidence: 99%

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Toxicity of insecticides used in melon crop to Opius scabriventris, a natural parasitoid of Liriomyza sativae

Silva

Costa

Bezerra

et al. 2020

Agraria

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Opius scabriventris Nixon is an important parasitoid of the leafminer Liriomyza sativae Blanchard in the melon crop (Cucumis melo L.). Knowing the impact of insecticides on this parasitoid may help the integrated pest management, thus allowing recommending insecticides with a lower impact. Therefore, this study evaluated lethal and sublethal toxicities of select insecticides used in the melon crop for controlling leafminers on the O. scabriventris parasitoid. The toxicity of the insecticides was assessed by confining adults of the parasitoid on freshly sprayed plastic containers, under laboratory conditions. The evaluated insecticides were abamectin, chlorantraniliprole, cyromazine, spinetoram, spinosad, in addition to the negative control treatment (distilled water). The sublethal effect of the insecticides was studied through the parasitism of leafminer larvae by surviving parasitoids. Among the evaluated insecticides, abamectin, spinetoram and spinosad were the most toxic to O. scabriventris; while chlorantraniliprole and cyromazine demonstrated low toxicity to the parasitoid, albeit causing reduction in its parasitism capacity.

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Section: Methodsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Toxicity of insecticides used in melon crop to Opius scabriventris, a natural parasitoid of Liriomyza sativae

Silva

Costa

Bezerra

et al. 2020

Agraria

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“…Parasitoids of the Opius (Hymenoptera: Braconidae) genus are reported as an important biological control agents of Liriomyza, being among the species of natural enemies used for leafminer control in Europe and the United States (LIU et al, 2009; CORTEZ-MONDACA; VALENZUELA-ESCOBOZA, 2013). In the main melon-producing areas in Brazil, Opius scabriventris Nixon (Hymenoptera: Braconidae) is reported as a relevant natural enemy of Liriomyza (COSTA-LIMA et al, 2014;ARAUJO et al, 2015).…”

Section: Does the High Density Of Trichomes Influence The Parasitism mentioning

confidence: 99%

Does the high density of trichomes influence the parasitism of Liriomyza sativae by Opius scabriventris on melon cultivars?

Silva

Costa²,

Araújo

2018

Arq. Inst. Biol.

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Opius scabriventris (Hymenoptera: Braconidae) is considered an important parasitoid of the leafminer Liriomyza sativae (Diptera: Agromyzidae) in the main melon (Cucumis melo L.) producing areas in Brazil. However, there is no information on the influence of trichomes on melon plant leaves on the parasitoids’ actions. Therefore, the aim of this investigation was to relate the influence of columnar trichome density on melon cultivars in the parasitism of L. sativae larvae by O. scabriventris. The study was conducted in laboratory conditions, in which melon cultivars were infested and the leafminer larvae were subjected to the parasitism. The results demonstrated that trichome density can influence the parasitism of L. sativae larvae by O. scabriventris. Among the studied materials, Piel de Sapo cultivar showed the highest density of trichomes in the leaves (534 trichomes/cm2) and the lowest parasitism (20%).

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“…El efecto negativo que tienen las aplicaciones continuas de insecticidas para controlar especies del género Liriomyza, en sus enemigos naturales, especialmente parasitoides, ha sido ampliamente documentado (Oatman y Kennedy 1976;Wene 1995;Chirinos y Geraud-Pouey 1996;Chirinos et al 2014;Araujo et al 2015;Guantai et al 2015). En contraste, cuando no se aplican insecticidas químicos se ha detectado la acción de varias especies de parasitoides, que juegan un papel importante en la regulación de poblaciones de estos insectos minadores en varias regiones del mundo (Gratton y Welter 2001;Hernández et al 2011a;Chirinos et al 2014).…”

Section: Introductionunclassified

Efecto de insecticidas sobre Liriomyza sativae (Diptera: Agromyzidae) y sus parasitoides en frijol, Phaseolus vulgaris

Chirinos

Castro

Garcés

2017

Rev. Colomb. Entomol.

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Liriomyza sativae una especie minadora de hojas notoriamente polífaga, constituye una de las principales causas de aplicaciones de insecticidas en frijol, Phaseolus vulgaris en Ecuador. No obstante, asociadas a este insecto existen varias especies de parasitoides las cuales generalmente regulan sus poblaciones cuando no existe interferencia debido a las aplicaciones de insecticidas. Para evaluar la magnitud del control biológico natural por estos parasitoides se realizaron dos estudios en el Centro Experimental “El Misionero” Guayas, Ecuador. En uno se observó la fluctuación poblacional de L. sativae y la incidencia de sus parasitoides en una parcela sin insecticidas. En el otro se evaluaron los mismos factores en un experimento comparando dos tratamientos: 1. sin aplicaciones de insecticidas y 2. con aplicaciones semanales de una formulación comercial de lambda cihalotrina + tiametoxam. En ambos casos se observó la diversidad de los parasitoides asociados con este minador. En el primer estudio se detectó baja infestación (1,8 minas. foliolo -1) y alto porcentaje de parasitismo en minas (70,5 %). En el experimento los promedios generales de minas con larvas activas y porcentajes de parasitismo resultaron 11,8 ± 2,9 y 23,3 ± 5,0 % vs. 3,1 ± 0,8 y 61,8 ± 7,7 % para plantas tratadas con insecticidas y no tratadas, respectivamente. Closterocerus sp., Chrysocharis sp. y Neochrysocharis sp. (Hymenoptera: Eulophidae) fueron los parasitoides de larva encontrados, así como Ganaspidium sp. (Hymenoptera: Figitidae), un parasitoide de larva-pupario. Los resultados muestran la importancia de los parasitoides como reguladores de poblaciones de L. sativae y la interferencia de las aplicaciones indiscriminadas de insecticidas con el control biológico natural.

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Toxicity of insecticides used in melon crops to Opius scabriventris (Hymenoptera: braconidae)

Cited by 6 publications

References 18 publications

Toxicity of insecticides used in melon crop to Opius scabriventris, a natural parasitoid of Liriomyza sativae

Toxicity of insecticides used in melon crop to Opius scabriventris, a natural parasitoid of Liriomyza sativae

Does the high density of trichomes influence the parasitism of Liriomyza sativae by Opius scabriventris on melon cultivars?

Efecto de insecticidas sobre Liriomyza sativae (Diptera: Agromyzidae) y sus parasitoides en frijol, Phaseolus vulgaris

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