Patogenicidade de fungos hifomicetos aos pulgões Aphis gossypii Glover e Myzus persicae (Sulzer) (Hemiptera: Aphididae)

Loureiro, Elisângela de Souza; oino, A

doi:10.1590/s1519-566x2006000500014

Cited by 36 publications

(19 citation statements)

References 12 publications

(14 reference statements)

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“…The LT 50 found for M. persicae treated with ICAL6 (3.1 days) was similar to that obtained with L. lecanii (JAB 02) isolate against the same aphid species feeding on pepper (Loureiro and Moino 2006) and was one day faster compared with the two L. lecanii strains that cause 100% mortality of M. persicae (Van Hanh et al 2007). Also, ICAL6 at the highest dose (1 9 10 9 con ml -1 ) resulted 3.5% more virulent for M. persicae than Vertalec Ò (2 g l -1 ).…”

Section: Discussionsupporting

confidence: 67%

“…In laboratory conditions many reports showed that L. lecanii isolates were more virulent compared to other genera belonging to the order Hypocreales (Ascomycota), as well as Beauveria bassiana, Paecylomyces sp and Metharhizium anisopliae against aphids species (Loureiro and Moino 2006;Å sman 2007). Also, differences in virulence on different aphid species were found among different isolates of L. lecanii (Van Hanh et al 2007), which could be explained, probably, due to differences in their physiological characteristics (Jackson et al 1985;Cortéz-Madrigal et al 2003;Steinkraus 2006).…”

Section: Introductionmentioning

confidence: 99%

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Characterization and virulence of Lecanicillium lecanii against different aphid species

et al. 2009

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Seven isolates of Lecanicillium lecanii (Zimmermann) Zare & Gams isolated in Spain from infected aphids were characterized using sequences of the Internal Transcribed Spacer (ITS) regions and also based on morphological and physiological characteristics. Four of these seven L. lecanii isolates were selected to assess their virulence against nymphs of Myzus persicae (Sulzer), Nasonovia ribisnigri (Mosley), Macrosiphum euphorbiae (Thomas) and Aphis gossypii Glover. Mortality (%), lethal concentration 50 (LC 50 ) and lethal time 50 (TC 50 ) were calculated. The analysis of the sequences of ITS region confirmed that the new isolates were clearly Lecanicillium lecanii. The set of isolates had similar radial growth (51.5-54.0 mm), except for ICAL1 (39 mm). The germination time 50 (GT 50 ) varied between 10.7 h (ICAL3) and 13 h (ICAL5). The isolate ICAL6 showed the highest value for conidial production (3.4 9 10 8 con ml -1 ) and also produced the highest mortality for M. persicae (95%) and was more virulent than the commercial product Vertalec Ò (91.6%).

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Section: Discussionsupporting

confidence: 67%

Section: Introductionmentioning

confidence: 99%

Characterization and virulence of Lecanicillium lecanii against different aphid species

et al. 2009

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“…O isolado nas concentrações de 1,0 x 10 9 e 0,5 x 10 9 conídios.mL -1 causou 100% de mortalidade nos adultos do parasitóide C. flavipes (Tabela 1). Os dados não corrobam com os obtidos por Grance et al, (2009) (LOUREIRO et al, 2006).…”

Section: Resultsunclassified

EFEITO DOS ISOLADOS DE Metarhizium anisopliae (METSCHNIKOFF) SOROKIN (HYPOCREALES: CLAVICIPITACEAE) SOBRE PARASITOIDE Cotesia flavipes (CAMERON, 1891) (HYMENOPTERA: BRACONIDAE)

Hayashida

Kassab

Fonseca

et al. 2012

Nucleus

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Palavras-chave: Cana-de-açúcar. Controle microbiano. Entomopatógenos. SUMMARY:The objective of this study was to evaluate the effect of isolated Metarhizum anisopliae on larval parasitoid Cotesia flavipes. The experiment was conducted at a temperature of 25±1°C, RH 70±10% and 12h photophase, using a completely randomized design with 16 treatments and five repetitions, with a total of 10 adults C. flavipes by repetition. We used the following treatments: control (untreated), isolates UFGD 05, IBCB 348 and IBCB 425 at concentrations of 1.0  10 7 ; 0.5  10 8 ; 1.0  10 8 ; 0.5  10 9 e 1.0  10 9 conidia.mL -1. The insects were placed in plastic tubes of type Falcon ® , containing a piece of filter paper inoculated with 1 mL -1 of fungal suspension and a gout of honey. The results showed that the isolates UFGD 05, IBCB 348 and IBCB 425 had low virulence to adult parasitoids C. flavipes.Keywords: Sugar cane. Microbial control. Entomopathogens. INTRODUÇÃOA cana-de-açúcar representa um dos principais produtos agrícolas do Brasil, o plantio da cultura é expandido a cada ano e atualmente a área cultivada ocupa aproximadamente 8 milhões de hectares do território nacional (CONAB, 2011).

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“…Os fungos entomopatogênicos Beauveria bassiana e Metarhizium anisopliae são mundialmente conhecidos e utilizados como agentes biocontroladores de pragas agrícolas de várias espécies em diversas ordens (Alves et al 2008), inclusive Hemiptera, como os pulgões (Butt et al 1994, Loureiro & Moino Jr 2006.…”

Section: Palavras-chave: Fungo Entomopatogênico Inseticida Botânicounclassified

Potencial de isolados de Metarhizium anisopliae e Beauveria bassiana e do óleo de Nim no controle do pulgão Lipaphis erysimi (Kalt.) (Hemiptera: Aphididae)

Araujo¹,

Marques²,

Oliveira³

2009

Neotrop. entomol.

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-This work aimed to determine the efficiency of the entomopathogenic fungi Metarhizium anisopliae and Beauveria bassiana to control the aphid Lipaphis erysimi (Kalt.) (Hemiptera: Aphididae) in kale Brassica oleracea var acephala D.C., as well as their compatibility with a neem oil formulation (Neemseto®). Ten isolates of both fungi were tested and the most pathogenic ones were B. bassiana CG001 and M. anisopliae CG30 with 90% and 4.4 days, and 64% and 3.8 days of mortality and median lethal time, respectively. Bioassays with neem at concentrations of 0.5, 1.0 and 2.0% were done either by leaf discs dipping or spraying the aphids on the leaf discs. The neem spraying treatment at 2.0% provided 90% mortality. The use of B. bassiana isolate CG001 or M. anisopliae isolate CG30 with neem at 0.125, 0.25, and 0.5%, demonstrated that these isolates could have their spore viability or colony growth affected when exposed to neem concentrations higher than 0.25%. In absolute values, the isolates B. bassiana CG001 and M. anisopliae CG30 are the most virulent to L. erysimi, and could be utilized in the management of this pest.KEY WORDS: Entomopathogenic fungi, botanic insecticide, compatibility, crucifer RESUMO -Avaliou-se a eficiência de Metarhizium anisopliae e Beauveria bassiana para o controle do pulgão Lipaphis erysimi (Kalt.) em couve Brassica oleracea L. var. acephala D.C., bem como sua compatibilidade com óleo de nim (Neemseto ® ). Dez isolados desses fungos foram utilizados, onde o isolado CG 001 de B. bassiana e o isolado CG 30 de M. anisopliae apresentaram-se como os mais virulentos com 90% e 4,4 dias, e 64% e 3,8 dias, de mortalidade e tempo letal médio, respectivamente. Bioensaios com o produto à base de nim nas concentrações 0,5; 1,0 e 2,0% foram realizados por imersão foliar e pulverização sobre os pulgões. O tratamento com pulverização de 2,0% de Neemseto ® proporcionou mortalidade de 90%. O teste in vitro de Neemseto ® a 0,125; 0,25 e 0,5%, sobre os isolados CG 001 de B. bassiana e CG 30 de M. anisopliae mostrou que esses isolados podem ter seu crescimento colonial e viabilidade alterados quando expostos a concentrações de nim maiores que 0,25%. Em valores absolutos, os isolados CG 001 de B. bassiana e CG 30 de M. anisopliae foram os mais virulentos para L. erysimi, podendo ser utilizados no manejo dessa praga. PALAVRAS-CHAVE: Fungo entomopatogênico, inseticida botânico, compatibilidade, crucífera A produtividade das brassicáceas pode ser reduzida pela presença de vários insetos, com destaque para os pulgões Brevicoryne brassicae L, Myzus persicae (Sulzer) e Lipaphis erysimi (Kaltenbach) (Sousa-Silva & Ilharco 1995, Blackman & Eastop 2000. As ninfas e os adultos de L. erysimi sugam a seiva das folhas, brotos jovens e inflorescência, resultando até mesmo na morte da planta. Adicionalmente, podem transmitir viroses, como o vírus do mosaico do pepino e do feijoeiro (Castle et al 1992).Atualmente, o controle de pulgões baseia-se no uso de inseticidas químicos sintéticos e produtos alternativos como o alh...

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Patogenicidade de fungos hifomicetos aos pulgões Aphis gossypii Glover e Myzus persicae (Sulzer) (Hemiptera: Aphididae)

Cited by 36 publications

References 12 publications

Characterization and virulence of Lecanicillium lecanii against different aphid species

Characterization and virulence of Lecanicillium lecanii against different aphid species

EFEITO DOS ISOLADOS DE Metarhizium anisopliae (METSCHNIKOFF) SOROKIN (HYPOCREALES: CLAVICIPITACEAE) SOBRE PARASITOIDE Cotesia flavipes (CAMERON, 1891) (HYMENOPTERA: BRACONIDAE)

Potencial de isolados de Metarhizium anisopliae e Beauveria bassiana e do óleo de Nim no controle do pulgão Lipaphis erysimi (Kalt.) (Hemiptera: Aphididae)

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