Susceptibility of Schistocerca piceifrons (Orthoptera: Acrididae) to Metarhizium anisopliae var. acridum (Deuteromycotina: Hyphomycetes): laboratory and field trials

Abstract

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Evaluation of alternativePlutella xylostellacontrol by twoIsaria fumosoroseaconidial formulations - oil-based formulation and wettable powder - combined withBacillus thuringiensis

“…hypothesised that surfactants disrupt the insect gut epithelium, increasing permeability to bacterial toxins. Hernández‐Velázquez et al . reported that a Citroline–conidial formulation of M. anisopliae had been successful in controlling the Central American locust in Mexico, promoting a decline of up to 99% under field conditions at 13 days post‐application.…”

Virulence of Mexican isolates of entomopathogenic fungi (Hypocreales: Clavicipitaceae) upon Rhipicephalus=Boophilus microplus (Acari: Ixodidae) larvae and the efficacy of conidia formulations to reduce larval tick density under field conditions

“…Also, oils have been proposed as useful carriers to suspend conidia for the control of insect pests (Prior et al, 1988;Lomer et al, 1992;Bateman et al, 1993) and tick control (Maranga et al, 2005). A Citroline-conidia formulation of M. anisopliae has been successfully used in Mexico for the control of the Central American locust, Schistocerca piceifrons Walker (Orthoptera: Acrididae), promoting up to 99% decline in field bands, 13 days after field application (Hernández-Velázquez et al, 2003). However, in the present study the Citroline formulation did not promote a significant reduction of tick larvae numbers; this could be attributed to several factors.…”

“…However, in the present study the Citroline formulation did not promote a significant reduction of tick larvae numbers; this could be attributed to several factors. In particular, Citroline was used in combination with other carriers including water, as opposed to the formulae used by Hernández-Velázquez et al (2003) where Citroline was used as the sole component and applied as Ultra Low Volume (ULV). However, there is evidence suggesting that the grass species grown in a pasture bed along with weather conditions also affect the action of M. anisopliae to control R. microplus (Kaaya and Hassan, 2000;Basso et al, 2005).…”

Molecular detection of the airborne entomopathogen fungus Metarhizium acridum using specific oligonucleotides

“…This culture was derived from the original MaPL40 strain, which has been successfully applied in field trials (Hernández-Velázquez et al 2003). Strain EH-502/8 was stored in a 10% glycerin solution in liquid nitrogen at -196°C.…”

“…Numerous studies have focused on the assessment of the virulence of various isolates of this fungus, as well as the feasibility of its use as a microbial agent (Hernández-Velázquez et al 2003;Hunter et al 2005). As a result, the commercial pesticide Green Muscle Ò has been developed, which has proven to be effective in controlling the desert locust (Schistocerca gregaria) and red locust (Nomadacris septemfasciata) and several species of African grasshoppers (Aston 2004;Kooyman et al 2003).…”