Ação de fungos entomopatogênicos em larvas e adultos da mosca do figo Zaprionus indianus (Diptera: Drosophilidae)

Svedese, Virgínia Michelle; Silva, Ana Paula de Almeida Portela da; Lopes, Rosineide da Silva; Santos, Juliana Ferreira dos; Lima, Elza de Luna Alves

doi:10.1590/s0103-84782012001100002

Cited by 10 publications

(7 citation statements)

References 16 publications

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“…The use of entomopathogenic fungi for pest management, especially as part of an Integrated Pest Management (IPM) strategy, combined with cultural and other methods has increased because of the reduction in available chemical control measures (Ansari et al, 2011;Beris et al, 2012;Pelizza et al, 2012;Svedese et al, 2012). It has however been previously shown that both temperature and water availability (water activity, a w ) are bottlenecks in the efficacy of entomopathogenic fungi against pests (Magan, 2007).…”

Section: Introductionmentioning

confidence: 99%

Resilience and relative virulence of strains of entomopathogenic fungi under interactions of abiotic stress

Borisade¹,

Magan²

2015

Afr. J. Microbiol. Res.

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The objective of this study was to examine the effect of interacting conditions of water stress (0.995-0.96 water activity; a w ), elevated temperature (25-37°C) and CO 2 (350, 1000 ppm) on growth and sporulation of strains of three entomogenous fungi, Beauveria bassiana, Metarhizium anisopliae and Isaria farinosa. Subsequently, using bioassay systems with locust (Schistocerca gregaria), we examined the effect of elevated CO 2 (control, 350; 650; 1000 ppm CO 2 ) on efficacy of strains of all three species and used crickets (Acheta domesticus) to examine interacting conditions of elevated temperature and CO 2 at two relative humidities (25-35°C; 350, 1000 ppm CO 2 ; 96, 98 and >99% RH) on efficacy of a strain of B. bassiana for the first time. The 3-way interacting factors had a significant effect on growth of the strains of all three species, especially at 35-37°C and 0.96-0.98 a w and 1000 ppm CO 2 . Under these conditions, only one strain of B. bassiana and M. anisopliae was able to grow at a reduced rate as compared to the controls. No strain of I. farinosa was able to grow at 35-37°C either in normal air or in elevated CO 2 at 0.995-0.96 a w showing a high level of sensitivity to these interacting factors. Sporulation of the three strains of each species was also significantly affected by these three-way environmental interactions. There were some intra-strain differences and in most cases for the three species, water stress (0.98-0.96 a w ) at 35-37°C and 1000 ppm CO 2 resulting in either no sporulation or no growth. One strain of M. anisopliae (Ma 29) was particularly tolerant at 0.96 a w at 37°C and 1000 ppm CO 2 . Bioassays with the S. gregaria showed when CO 2 was elevated from 350 to 650 and to 1000 ppm, the relative virulence of two strains of each species was reduced over a 6-day temporal study. Further studies with B. bassiana in a detailed bioassay using crickets under three way abiotic interactions (25-35°C, 99-96% RH and 350 or 1000 ppm CO 2 ) showed that virulence was decreased with no efficacy occurring at 30-35°C and 1000 ppm CO 2 at 96% RH. This study suggests that climate change factors could have a profound impact on the efficacy of such biocontrol agents and thus have major implications for pest control using such approaches.

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Section: Introductionmentioning

confidence: 99%

Resilience and relative virulence of strains of entomopathogenic fungi under interactions of abiotic stress

Borisade¹,

Magan²

2015

Afr. J. Microbiol. Res.

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“…For example, in South America, it became a serious threat and economic concern for fig growers, with losses of up to 50% of production in some groves (Svedese et al. ). Although there is some question as to whether they can act as primary pests in undamaged fruit while the fruit is on plants (Steck ), they have been reared from ripe or damaged grapes collected from the ground and also directly from the plant (Van Timmeren and Isaacs ).…”

Section: Introductionmentioning

confidence: 99%

“…As Z. indianus expands its range, an increasing variety of fruits are used as larval hosts (Lachaise and Tsacas 1983;van der Linde et al 2006), making Z. indianus of potential concern as a new pest of numerous tropical and temperate fruit crops. For example, in South America, it became a serious threat and economic concern for fig growers, with losses of up to 50% of production in some groves (Svedese et al 2012). Although there is some question as to whether they can act as primary pests in undamaged fruit while the fruit is on plants (Steck 2005), they have been reared from ripe or damaged grapes collected from the ground and also directly from the plant (Van Timmeren and Isaacs 2014).…”

Section: Introductionmentioning

confidence: 99%

From a non‐target to a target: identification of a fermentation volatile blend attractive to Zaprionus indianus

Chi¹,

Gill

Epsky

et al. 2014

J Applied Entomology

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The African fig fly, Zaprionus indianus Gupta, is rapidly spreading through the New World and is a new potential pest for numerous fruit crops. Methods are needed to detect and monitor Z. indianus. A recent study shows that Z. indianus can be attracted with a mixture of wine and vinegar, but there are no chemical attractants yet identified. This fly was captured incidentally as a non‐target insect in experiments to develop chemical lures, based on wine and vinegar fermentation volatiles, for Drosophila suzukii Matsumura and Drosophila melanogaster Meigen. We then generated testable hypotheses on what combination of these volatiles was involved in Z. indianus attraction to wine and vinegar. We determined through a series of trapping experiments that the blend of ethanol, acetic acid, acetoin, isoamyl acetate, methionol and ethyl hexanoate constitutes a strong attractant for Z. indianus and accounts for its attraction to the combination of wine and vinegar. These results and findings provide the first opportunity to develop a long‐lasting and consistent chemical lure for trapping of Z. indianus. Such a lure in a suitable trap should provide a good means to document the spread of the fly and determine its seasonality and abundance in new areas and crops.

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“…The captured flies were then placed in Erlenmeyers flasks, well-sealed with fine webbing. Based on the methodology of Svedese et al (2012), a source of food for the dipterans and cotton moistened with water to maintain humidity in the flask were added to promote survival conditions for the duration of the experiment. They were divided into two groups: groups of adults flies treated with AC001 (treated group) and groups that did not receive treatment (control group).…”

Section: Trialmentioning

confidence: 99%

Interaction and activity of nematophagous fungus Duddingtonia flagrans on Haematobia irritans (Diptera: Muscidae)

Aguiar¹,

Martins²,

Santos³

et al. 2017

Afr. J. Microbiol. Res.

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Haematobia irritans, also known as the horn fly, is a "plague" that spreads rapidly among cattle herds, especially in the southeast of Brazil. The aim of this study was to evaluate the interaction and activity of nematophagous fungus Duddingtonia flagrans (AC001) on H. irritans (Diptera: Muscidae). The experiment was conducted using the nematophagous fungus (AC001), which is harmless to animals, humans, and the environment. At the beginning of the experimental trial, samples of adult H. irritans were collected manually, directly from the dorsal region of naturally infested cattle of the Nelore breed. The flies where divided into two groups: groups of adult flies treated with AC001 (treated group) and groups of flies that did not receive treatment (control group). During the trial, the experiment was monitored daily for five days and the results were recorded. The results showed that the AC001 fungal isolate grew, colonized, and consequently caused the death of the flies in the treated group, while in the control group, no interaction or growth was observed, and the flies remained alive. It was concluded that the fungus D. flagrans interacted with adult flies, taking into consideration a "possible attack" by chitinase enzymes, since the fungal isolate drew on the chitin contained in the exoskeletons of the insects. In addition, attention should be focused on new studies that can demonstrate that, in the future, biological control of the horn fly could be an effective and safe method when compared with other methods.

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Ação de fungos entomopatogênicos em larvas e adultos da mosca do figo Zaprionus indianus (Diptera: Drosophilidae)

Abstract: Ação de fungos entomopatogênicos em larvas e adultos da mosca do figo

Cited by 10 publications

References 16 publications

Resilience and relative virulence of strains of entomopathogenic fungi under interactions of abiotic stress

Resilience and relative virulence of strains of entomopathogenic fungi under interactions of abiotic stress

From a non‐target to a target: identification of a fermentation volatile blend attractive to Zaprionus indianus

Interaction and activity of nematophagous fungus Duddingtonia flagrans on Haematobia irritans (Diptera: Muscidae)

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