Seletividade de Lecanicillium lecanii (Zimm.) Zare &amp; W. Gams (classe-forma: Hyphomycetes) ao parasitóide Trichogramma atopovirilia Oatman &amp; Platner, 1983 (Hymenoptera: Trichogrammatidae)

Dalvi, Leandro Pin; Polanczyk, Ricardo Antônio; Pratissoli, Dirceu; Melo, Ricardo Lopes de; Holtz, Anderson Mathias

doi:10.1590/s1413-70542007000500018

Cited by 3 publications

(3 citation statements)

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“…Os resultados obtidos por (Dalvi et al, 2007) corroboram com os dados obtidos neste trabalho, pois os autores verificaram a seletividade do fungo entomopatogênico Lecanicillium lecanii para T. atopovirilia, sendo avaliados naquele caso, os mesmos parâmetros avaliados no presente estudo. A seletividade dos fungos entomopatogênicos para os inimigos naturais foi ressaltada por Alves (1998) como extremamente vantajosa em relação aos agrotóxicos convencionais.…”

Section: Resultsunclassified

Efeito de beauveria bassiana (bals.) Vuillemin e Metarhizium anisopliae (metsch.) sorokin nos parâmetros biológicos de trichogramma atopovirilia oatman & platner, 1983 (hymenoptera: trichogrammatidae)

et al. 2010

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EFEITO DE Beauveria bassiana (Bals.) VUILLEMIN E Metarhizium anisopliae (Metsch.) SOROKIN NOS PARÂMETROS BIOLÓGICOS DE Oatman & Platner, 1983. No primeiro experimento, cartelas com ovos de Spodoptera frugiperda, 1797 foram mergulhadas em suspensões preparadas com os produtos e, em seguida, colocadas à disposição dos parasitóides para oviposição, durante um período de 24 horas. No segundo, fêmeas do parasitóide foram alimentadas com uma solução mel e suspensão de conídios. Em ambos os experimentos as fêmeas mortas foram colocadas em uma câmara úmida para observar a esporulação dos fungos. Os tratamentos foram mantidos em câmara climatizada com temperatura de 25±1º C, umidade relativa de 70±10% e fotofase de 14 horas. Avaliou-se a longevidade e mortalidade dos adultos, índice de parasitismo, emergência do parasitóide, número de indivíduos por ovo e razão sexual dos descendentes. As formulações não interferiram nos parâmetros avaliados e não foi observada a esporulação do fungo no cadáver do parasitóide adulto. É possível inferir que T. atopovirilia e os fungos entomopatogênicos B. bassiana e M. anisopliae são compatíveis e podem ser empregados simultaneamente em programas de manejo integrado de S. frugiperda. Termos para indexação:Parasitóide, entomopatógeno, manejo integrado de pragas. ABSTRACTTwo bioassays were performed to evaluate the effect of two biopesticides based on Beauveria bassiana (Bals.) Vuillemin and Metarhizium anisopliae (Metsch.) Sorokin on the biological parameters of Trichogramma atopovirilia Oatman & Platner, 1983. In the first one, displays with S. frugiperda, 1797 eggs were dropped into the biopesticide suspension and offered to the parasitoid females for 24 hours. In the second one, parasitoid females were fed with a suspension containing honey and biopesticide suspension. In both cases, after the parasitoid death they were mantained into a humid chamber to observe fungus sporulation. The experiments were maintained in a climatized chamber at 25±1º C, RH 70± 10%, and photophase of 14 hours. The longevity and adult mortality, total parasitism, progeny emergency, number of individuals per egg and sexual ratio were analyzed. The biopesticides did not affect the evaluated parameters and no fungus sporulation was observed in dead females. It is possible to assert that the entomopathogenic fungi B. bassiana and M. anisopliae can be used with T. atopovirilia in IPM S. frugiperda systems.

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Section: Resultsunclassified

Efeito de beauveria bassiana (bals.) Vuillemin e Metarhizium anisopliae (metsch.) sorokin nos parâmetros biológicos de trichogramma atopovirilia oatman & platner, 1983 (hymenoptera: trichogrammatidae)

et al. 2010

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“…Dalvi et al. () performed selectivity tests of L. lecanii to Trichogramma atopovirilia Oatman & Platner, assessing different parameters and observing the selectivity of the entomopathogenic fungus to the parasitoid. Potrich et al.…”

Section: Introductionmentioning

confidence: 99%

“…However, there are few studies on the selectivity of entomopathogenic fungi, and no protocols have been developed to determine the safety or compatibility of the combined use of biological control methods. Dalvi et al (2007) performed selectivity tests of L. lecanii to Trichogramma atopovirilia Oatman & Platner, assessing different parameters and observing the selectivity of the entomopathogenic fungus to the parasitoid. Potrich et al (2009) confirmed that B. bassiana do not interfere in biological parameters of Trichogramma pretiosum (Riley).…”

Section: Introductionmentioning

confidence: 99%

Interactions between Beauveria bassiana and Trichogramma pretiosum under laboratory conditions

Potrich

Alves

Lozano

et al. 2015

Entomologia Exp Applicata

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Knowledge about interactions among biological control agents, used in sequence or simultaneously, may help to increase their efficiency, or in the case of conservation biological control, to avoid the impairment of efficiency. The aim of this study was to evaluate the interaction between two isolates of Beauveria bassiana (Bals.) Vuill. (Hypocreales) (Unioeste 47 and Unioeste 57) and Trichogramma pretiosum Riley (Hymenoptera: Trichogrammatidae), varying the timing of sprays of the fungus. Isolates were sprayed at 109 conidia ml−1 upon cards (1 × 5 cm; i.e., 2 × 105 conidia mm−2) with eggs of Anagasta kuehniella Zeller (Lepidoptera: Pyralidae) and the control group was sprayed with sterile distilled water with Tween® 80 (0.01%). First, the percentage of parasitized eggs was assessed in a choice test: females of T. pretiosum were confined with two cards, one of them treated with either of the fungus isolates, the other a water‐treated control. Second, parasitism was compared on cards sprayed at various time intervals pre‐ vs. post‐parasitism: the number of parasitized eggs was assessed, as well as the parasitoid's emergence percentage, egg‐adult period, offspring sex ratio, and the longevity of parasitizing females. Trichogramma pretiosum preferred to parasitize control eggs (65 and 72%) and parasitization of the treated eggs did not differ between fungus isolates: 35% (Unioeste 47) vs. 28% (Unioeste 57). Spraying before or after parasitizing did not affect the number of parasitized eggs, nor offspring sex ratio; however, both treatments affected the percentage of emerged adults, egg‐adult period, and longevity. These findings suggested that isolates did not interfere in the longevity of parasitizing females. When the fungus was sprayed on the various development stages of the parasitoid within the host egg, or when it was offered to the parasitoid at different times after spraying, differences in adults' longevity, parasitism, emergency period from egg to adult, and sex ratio were observed. Beauveria bassiana may be used in conjunction with this parasitoid in a program of pest control.

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Is Isaria fumosorosea selective to Trichogramma pretiosum (Hymenoptera: Trichogrammatidae)?

Potrich¹,

Libardoni²,

Alves³

et al. 2020

Eur. J. Entomol.

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Entomopathogenic fungi and the egg parasitoid Trichogramma pretiosum Riley (Hymenoptera: Trichogrammatidae) might be used together in biological control. However, the effects of these fungi on T. pretiosum are not known. Thus, this study aimed to determine the effect of the entomopathogenic fungus Isaria fumosorosea, on the biological parameters of T. pretiosum. Two isolates of I. fumosorosea (IBCB 367 and IBCB 394) were used for this purpose. (1) In a free choice test: cards (1.0 × 5.0 cm) with non-parasitized eggs of Anagasta kuehniella Zeller (Lepidoptera: Pyralidae) were either sprayed with 0.2 mL of the fungus suspension (1.0 × 10 9 conidia.mL-1) or with sterile distilled water containing Tween ® 80 (0.01%), which were then offered to females of T. pretiosum. (2) No choice test: the isolates were sprayed at a concentration of 1.0 × 10 9 conidia.mL-1 on cards (1.0 × 5.0 cm) with A. kuehniella eggs. The control consisted of spraying sterile distilled water containing Tween ® 80 (0.01%). Individual females of T. pretiosum were confi ned for 24 h with the cards. The number of eggs parasitized, percentage of emergence, longevity, duration of the egg-adult period and sex ratio were evaluated, as well as the longevity of the females that parasitized the eggs and the mortality of the emerging adults evaluated. IBCB 367 isolate repelled T. pretiosum. The pre-parasitism and post-parasitism sprays did not affect the number of eggs parasitized or the sex ratio, however, the pre-parasitism IBCB 394 treatment the females and males survived for longer, whereas the survival of females in post-parasitism treatment with the same isolate was reduced. The presence of conidia on and mycelium of the fungus in T. pretiosum was confi rmed using Scanning Electron Microscopy and a histological analysis. Isolates IBCB 367 and IBCB 394 from I. fumosorosea are selective to T. pretiosum in the laboratory.

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Seletividade de Lecanicillium lecanii (Zimm.) Zare & W. Gams (classe-forma: Hyphomycetes) ao parasitóide Trichogramma atopovirilia Oatman & Platner, 1983 (Hymenoptera: Trichogrammatidae)

Cited by 3 publications

References 5 publications

Efeito de beauveria bassiana (bals.) Vuillemin e Metarhizium anisopliae (metsch.) sorokin nos parâmetros biológicos de trichogramma atopovirilia oatman & platner, 1983 (hymenoptera: trichogrammatidae)

Efeito de beauveria bassiana (bals.) Vuillemin e Metarhizium anisopliae (metsch.) sorokin nos parâmetros biológicos de trichogramma atopovirilia oatman & platner, 1983 (hymenoptera: trichogrammatidae)

Interactions between Beauveria bassiana and Trichogramma pretiosum under laboratory conditions

Is Isaria fumosorosea selective to Trichogramma pretiosum (Hymenoptera: Trichogrammatidae)?

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