Detection of entomopathogenic fungi in peridomestic triatomine-infested areas in central Brazil and fungal activity against Triatoma infestans (Klug) (Hemiptera: Reduviidae)

Luz, Christian; Rocha, Luiz F.N.; Nery, Gustavo V

doi:10.1590/s1519-566x2004000600017

Cited by 25 publications

(24 citation statements)

References 32 publications

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“…Under laboratory conditions, T. infestans were highly susceptible to infections by both Beauveria bassiana and Metarhizium anisopliae , and it became clear that high humidities enhance infection and induce recycling on fungus‐killed triatomines allowing a spreading of the mycosis (Luz and Fargues ; Luz et al. , ; Pedrini et al. ; Rocha and Luz ).…”

Section: Introductionmentioning

confidence: 99%

“…Unfavourable low moisture in natural habitats seems to be a major drawback for the use of mycoinsecticides against triatomine vectors (Luz et al. , ).…”

Section: Introductionmentioning

confidence: 99%

“…Entomopathogenic fungi have been studied for the biological control of these vectors. Under laboratory conditions, T. infestans were highly susceptible to infections by both Beauveria bassiana and Metarhizium anisopliae, and it became clear that high humidities enhance infection and induce recycling on fungus-killed triatomines allowing a spreading of the mycosis Luz et al , 2004aPedrini et al 2009;Rocha and Luz 2011). Drier test conditions hampered extracutic-ular fungal development and resulted in reduced mortalities and an inhibition of post-mortem growth on dead insects Luz 1998, 2000;Lazzarini et al 2006).…”

Section: Introductionmentioning

confidence: 99%

“…Drier test conditions hampered extracutic-ular fungal development and resulted in reduced mortalities and an inhibition of post-mortem growth on dead insects Luz 1998, 2000;Lazzarini et al 2006). Unfavourable low moisture in natural habitats seems to be a major drawback for the use of mycoinsecticides against triatomine vectors (Luz et al 1994(Luz et al , 2004a.…”

Section: Introductionmentioning

confidence: 99%

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Effect of formulated Metarhizium anisopliae on eggs and eclosing nymphs of Triatoma infestans

Rodrigues

Lobo

Fernandes

et al. 2014

J Applied Entomology

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Little is known about the ovicidal effects of fungi that attack nymphs and adults of triatomine vectors. A combined formulation of Metarhizium anisopliae IP 46 conidia prepared with diatomaceous earth (DE) and vegetable oil was tested against eggs of Triatoma infestans. Eggs were highly susceptible to fungal infection at relative humidity close to saturation [>98% relative humidity (RH)] but not at 75% RH regardless of the formulation applied. Susceptibility of eggs decreased with longer post‐ovipositional embryonation periods before treatments. The eventual eclosion of nymphs was best suppressed by application of conidia prepared with DE + oil and at a >98% RH incubation. Moreover, nymphs were less affected by the fungus when exposed for only a 24‐h period after eclosion to a treated surface than individuals that were in constant contact with the conidia. These findings contribute to a better understanding of the potential of M. anisopliae as an agent against all developmental stages of T. infestans.

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Section: Introductionmentioning

confidence: 99%

“…Unfavourable low moisture in natural habitats seems to be a major drawback for the use of mycoinsecticides against triatomine vectors (Luz et al. , ).…”

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Effect of formulated Metarhizium anisopliae on eggs and eclosing nymphs of Triatoma infestans

Rodrigues

Lobo

Fernandes

et al. 2014

J Applied Entomology

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“…Some of the species of epidemiological importance either in Argentina and Colombia are illustrated in Figure 1. Since the 1980s, an alternative way to the classical chemical control of Chagas disease vectors was explored and specific pathogens as biological control agents of triatomines were investigated [10][11][12].…”

Section: Introductionmentioning

confidence: 99%

Triatomines intrahaemocoelic inoculation protocol: a useful tool to check infectivity in insects

et al. 2016

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Vectors of Chagas disease are currently controlled by employing several chemical insecticides though there is a continuing search for alternative ecological methods against disease causing vectors. An effective method includes the use of specific pathogens as biological control agents. The aim of this work was to describe a complete experimental inoculation protocol in triatomines. The intrahaemocoelic inoculation technique can be applied to inoculate different kinds of microorganisms such as viruses, fungi, bacteria and protozoa; so it could be considered a useful tool in infective bioassays. This article includes results from evaluations of Triatoma virus (TrV, Dicistroviridae: Triatovirus) infectivity in several triatomine species. The protocol, also suitable for any other kind of insects, describes the materials and steps required to safely inoculate the insects, preventing any damage and/or contamination.

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Laboratory and field studies for the control of Chagas disease vectors using the fungus Metarhizium anisopliae

Rangel

Piedrabuena

Roitman

et al. 2020

Arch Insect Biochem Physiol

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Chagas disease is one of the most important insectvectored diseases in Brazil. The entomopathogenic fungus Metarhizium anisopliae was evaluated against nymphs and adults of Panstrongylus megistus, Triatoma infestans, and T. sordida. Pathogenicity tests at saturated humidity demonstrated high susceptibility to fungal infection. The shortest estimates of 50% lethal time (LT 50) for P. megistus varied from 4.6 (isolate E9) to 4.8 days (genetically modified strain 157p). For T. infestans, the shortest LT 50 was 6.3 (E9) and 7.3 days (157p). For T. sordida, the shortest LT 50 was 8.0 days (157p). The lethal concentration sufficient to kill 50% of T. infestans (LC 50) was 1.9 × 10 7 conidia/ml for strain 157p. In three chicken coops that were sprayed with M. anisopliae, nymphs especially were well controlled, with a great population reduction of 38.5% after 17 days. Therefore M. anisopliae performed well, controlling Triatominae in both laboratory and field studies.

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Detection of entomopathogenic fungi in peridomestic triatomine-infested areas in central Brazil and fungal activity against Triatoma infestans (Klug) (Hemiptera: Reduviidae)

Abstract: Neotropical Entomology 33(6): 783-791 (2004)

Cited by 25 publications

References 32 publications

Effect of formulated Metarhizium anisopliae on eggs and eclosing nymphs of Triatoma infestans

Effect of formulated Metarhizium anisopliae on eggs and eclosing nymphs of Triatoma infestans

Triatomines intrahaemocoelic inoculation protocol: a useful tool to check infectivity in insects

Laboratory and field studies for the control of Chagas disease vectors using the fungus Metarhizium anisopliae

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