Influence of humidity on the infection of western flower thrips, Frankliniella occidentalis (Thysanoptera: Thripidae), by Beauveria bassiana

Mukawa, Shigeyuki; Tooyama, Hirokazu; Ikegami, Takafumi

doi:10.1007/s13355-011-0033-2

Cited by 15 publications

(8 citation statements)

References 29 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Previous experiments on F. selysi found that, for the S2 strain of B. bassiana that we collected from our field site, this concentration resulted in intermediate mortality rates (Reber and Chapuisat, in press). A similarly high concentration of conidia has also been used in other studies on the response of different insects to B. bassiana (e.g., Castilho et al 2010;Mukawa et al 2011). The first callow worker from each rearing group was randomly assigned to either the fungal exposure or the control treatment.…”

Section: Callow Survival and Fungal Challengementioning

confidence: 99%

Effects of the social environment on the survival and fungal resistance of ant brood

Purcell

Brütsch

Chapuisat

2011

Behav Ecol Sociobiol

View full text Add to dashboard Cite

The phenotype of social animals can be influenced by genetic, maternal and environmental effects, which include social interactions during development. In social insects, the social environment and genetic origin of brood can each influence a whole suite of traits, from individual size to caste differentiation. Here, we investigate to which degree the social environment during development affects the survival and fungal resistance of ant brood of known maternal origin. We manipulated one component of the social environment, the worker/brood ratio, of brood originating from single queens of Formica selysi. We monitored the survival of brood and measured the head size and ability to resist the entomopathogenic fungus Beauveria bassiana of the resulting callow workers. The worker/brood ratio and origin of eggs affected the survival and maturation time of the brood and the size of the resulting callow workers. The survival of the callow workers varied greatly according to their origin, both in controls and when challenged with B. bassiana. However, there was no interaction between the fungal challenge and either the worker/brood ratio or origin of eggs, suggesting that these factors did not affect parasite resistance in the conditions tested. Overall, the social conditions during brood rearing and the origin of eggs had a strong impact on brood traits that are important for fitness. We detected a surprisingly large amount of variation among queens in the survival of their brood reared in standard queenless conditions, which calls for further studies on genetic, maternal and social effects influencing brood development in the social insects.

show abstract

Section: Callow Survival and Fungal Challengementioning

confidence: 99%

Effects of the social environment on the survival and fungal resistance of ant brood

Purcell

Brütsch

Chapuisat

2011

Behav Ecol Sociobiol

View full text Add to dashboard Cite

show abstract

“…The present study also showed that the efficacy of new native strains was significantly higher than that of the reference strain GHA which caused intermediate mortality of L. decemlineata adults. GHA strain, the active ingredient of mycopesticide BotaniGard ® WP, has been reported to be highly efficient in the control of many arthropod pests [70][71][72][73][74]. This strain was originally isolated from a chrysomelid beetle Diabrotica undecimpunctata Mannerheim (Coleoptera: Chrysomelidae) and host specificity thus might be one of the reasons why it was less effective compared to native strains isolated from naturally infected CPB adults.…”

Section: Discussionmentioning

confidence: 99%

Virulence of Beauveria bassiana Strains Isolated from Cadavers of Colorado Potato Beetle, Leptinotarsa decemlineata

Zemek

Konopická

Jozová

et al. 2021

Insects

View full text Add to dashboard Cite

The Colorado potato beetle, Leptinotarsa decemlineata (Say), is a serious, widely distributed pest of potato and other crops. This pest is able to defoliate the host plant and cause severe yield loss. Moreover, the pest quickly becomes resistant to many chemical pesticides. Therefore, the development of novel biopesticides targeting this pest is urgently needed. The purpose of this study was to obtain new strains of the entomopathogenic fungus Beauveria bassiana and assess their efficacy against L. decemlineata adults under laboratory conditions. Twelve strains were isolated from cadavers of Colorado potato beetles collected in potato fields in the Czech Republic. Test beetles were treated by suspensions of conidia at the concentration of 1 × 107 spores per milliliter and their survival was recorded daily for three weeks. The results of the bioassays revealed that all new native strains were pathogenic to L. decemlineata adults and caused mortality up to 100% at the end of the trial period with an LT50 of about 7 days. These strains were more virulent than a reference strain GHA and some of them can be recommended for the development of a new mycoinsecticide against L. decemlineata. Our findings also highlight the importance of searching for perspective strains of entomopathogenic fungi among naturally infected hosts.

show abstract

“…Studies with other mite species reported promising results for B. bassiana against P. latus in laboratory bioassays and greenhouse trials (Peña et al 1996) and with various fungal isolates against the false spider mite, Brevipalpus phoenicis (Geijskes) (Acari: Tenuipalpidae) under laboratory conditions (Rossi-Zalaf & Alves 2006). The strain GHA has been reported to be highly efficient in control of many insect pest species (Liu & Bauer 2008;Mukawa et al 2011;Clavet et al 2013;Parker et al 2015) and was found to be virulent also against T. urticae (Ullah & Lim 2015). In the present study, however, the efficacies of all tested Beauveria spp.…”

Section: Discussionmentioning

confidence: 99%

Efficacy of soil isolates of entomopathogenic fungi against the bulb mite, Rhizoglyphus robini (Acari: Acaridae)

Konopická

Bohatá

Nermuť

et al. 2021

saa

View full text Add to dashboard Cite

The bulb mite, Rhizoglyphus robini, is a serious pest of garlic, onion and other crops. The mite is usually found in association with dangerous fungal pathogens such as Fusarium spp. Control of this pest has relied upon the use of synthetic acaricides but chemical control of the bulb mite is difficult because it is able to develop resistance quickly. Thus, alternative control methods, e.g. biological control, need to be developed and implemented. The aim of this study was to assess efficacy of selected strains of entomopathogenic fungi (EPF) against adult females of R. robini under laboratory conditions. New EPF strains were isolated from soil samples collected in onion and garlic fields in the Czech Republic and Israel using soil elution and cultivation on selective media. Fungal species were determined using macroscopic, microscopic and molecular markers. The efficacy against R. robini females was tested in 17 isolated and 3 reference strains of EPF. Results revealed high variability among species and strains. The highest efficacy against R. robini mites was found in strains of Metarhizium anisopliae isolated from soil samples collected in the Czech Republic which caused mortality up to 99.3%, and a Metarhizium indigoticum strain from Israel causing 98.3% mortality after four days of bioassay. Isaria fumosorosea strains did not caused mortality higher than 40%. The lowest virulence was found in Beauveria spp. strains causing mortality of mites between 5 and 25%. Median lethal time (LT50) and median lethal concentration (LC50) in the three most virulent strains ranged between 2 and 4 days and between 1.01×104 and 2.36×105 spores/ml, respectively. The concentration-response models indicated that the M. indigoticum strain is more lethal than M. anisopliae strains. The present study showed that some strains of entomopathogenic fungi, especially from the genus Metarhizium, could be perspective biocontrol agents against R. robini.

show abstract

Influence of humidity on the infection of western flower thrips, Frankliniella occidentalis (Thysanoptera: Thripidae), by Beauveria bassiana

Cited by 15 publications

References 29 publications

Effects of the social environment on the survival and fungal resistance of ant brood

Effects of the social environment on the survival and fungal resistance of ant brood

Virulence of Beauveria bassiana Strains Isolated from Cadavers of Colorado Potato Beetle, Leptinotarsa decemlineata

Efficacy of soil isolates of entomopathogenic fungi against the bulb mite, Rhizoglyphus robini (Acari: Acaridae)

Contact Info

Product

Resources

About