2012
DOI: 10.1016/j.vetpar.2012.06.028
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Virulence potential of Metarhizium anisopliae s.l. isolates on Rhipicephalus (Boophilus) microplus larvae

Abstract: The use of entomopathogenic fungi to control arthropods has been reported worldwide for decades. The aim of the present study was to evaluate the virulence of 30 Metarhizium anisopliae s.l. Brazilian isolates from different geographical regions, hosts or substrates on the larvae of Rhipicephalus (Boophilus) microplus ticks under in vitro conditions to the selection of virulent isolates in order to be further used in biological control programs. The current study confirmed the lethal action of M. anisopliae s.l… Show more

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Cited by 29 publications
(19 citation statements)
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“…Notably, the isolates originally sourced from field-sampled house flies M54, M92 and M93, were significantly less effective at killing flies at the dose tested than the two strains isolated from soil. This suggests a level of attenuation by the M. domestica host-isolated strains, though previous studies have demonstrated no relationship between the virulence potential of an isolate and its source [34,35]. This does, however, highlight the need to screen a variety of fungal isolates against target pests when considering the development of a mycoinsecticide.…”
Section: Discussionmentioning
confidence: 86%
“…Notably, the isolates originally sourced from field-sampled house flies M54, M92 and M93, were significantly less effective at killing flies at the dose tested than the two strains isolated from soil. This suggests a level of attenuation by the M. domestica host-isolated strains, though previous studies have demonstrated no relationship between the virulence potential of an isolate and its source [34,35]. This does, however, highlight the need to screen a variety of fungal isolates against target pests when considering the development of a mycoinsecticide.…”
Section: Discussionmentioning
confidence: 86%
“…However, although generalizations cannot be made, the cumulative effect is controlled by the weather, the active constituent of the insecticide, the chemical mode of action, and the M. anisopliae isolated to control M. fimbriolata (Dinardo-Miranda et al, 2004a;Loureiro et al, 2005). On other hand, the genetic constitution of the pest population (Quinelato et al, 2012), adaptations and mechanisms of insect resistance (Dubovskiy et al, 2013) may influence the efficiency of the control techniques.…”
Section: Conventional Sampling × New Sampling Method: Between 15 Janumentioning
confidence: 99%
“…The efficacy of M. anisopliae in killing the nymphs and adults of many genus and species of ticks has been demonstrated in many studies for Rhipicephalus microplus , Rhipicephalus sanguineus , Haemaphysalis qinghaiensis , Hyalomma excavatum , and Ixodes ricinus [ 25 , 28 , 76 , 78 , 101 , 102 , 103 , 104 , 105 ]. Although studies have shown that the conidia of M. anisopliae reduced the percentage of egg production and hatchability, the precise mechanism of how M. anisopliae caused a decline in egg production and hatchability is still unknown [ 105 , 106 ].…”
Section: Metarhizium Anisopliae As a Biologicalmentioning
confidence: 99%