Entomopathogenic fungi such as Beauveria bassiana are currently considered as a potential control agent for malaria mosquitoes. The success of such strategies depends among others on the efficacy of the fungus to kill its hosts. As B. bassiana can use various resources for growth and reproduction, increasing the dependency on mosquitoes as a nutritional source may be instrumental for reaching t...

Pathogens are predicted to pose a particular threat to eusocial insects because infections can spread rapidly in colonies with high densities of closely related individuals. In ants, there are two major castes: workers and reproductives. Sterile workers receive no direct benefit from investing in immunity, but can gain indirect fitness benefits if their immunity aids the survival of their ferti...

Three non-ionic surfactants: Tween20, Tween80 and Breakthru (®) were screened for their effects on spore germination and mycelial growth rates and for their influence on three isolates of Beauveria bassiana spore germination at various temperatures. Tween20 and Tween80 were compatible with all the B. bassiana isolates in the germination studies, but inhibited germination at higher surfactant co...

In this study, five morphological types of circulating hemocytes were recognized in the hemolymph of the adult sunn pest, Eurygaster integriceps Puton (Hemiptera: Scutelleridae), namely prohemocytes, plasmatocytes, granulocytes, adipohemocytes, and oenocytoids. The effects of the secondary metabolites of the entomopathogenic fungus Beauveria bassiana on cellular immune defenses of Eurygaster in...

We tested the effect of2 exposure methods and 2 environmental factors, temperature and humidity, on Beauceria bassiana (Deuteromycotina: Hyphomycetes) mycosis in Hippodamia convergens Gut<;lin-Meneville (Coleoptera: Coccinellidae). We found that the standard EPA bioassay method of exposing nontarget insects by immersion resulted in a per-insect dose that was 5 times greater than that from spray...

Beauveria bassiana is an entomopathogenic fungus that grows both in vivo and in vitro. In vivo it can colonize live insect hosts, and tissue digestion occurs by secreted hydrolytic exoenzymes. It can also colonize dead insect tissue provided this is free from competing microorganisms. Depending on whether the host is alive or dead the expression (quality/quantity) of the exoenzymes may vary. We...

A.D. Avrorina, A.V. Avrorina, V.M. Aynutdinova, R. Bannashg, I.A. Belolaptikovb, D.Yu. Bogorodskyc, V.B. Brudaninb, N.M. Budnevc, I.A. Danilchenkoa, S.V. Demidova, G.V. Domogatskya, A.A. Doroshenkoa, A.N. Dyachokc, Zh.-A.M. Dzhilkibaeva, S.V. Fialkovskye, A.R. Gafarovc, O.N. Gaponenkoa, K.V. Golubkova, T.I. Gressc, Z. Honzb, K.G. Kebkalg, O.G. Kebkalg, K.V. Konischevb, A.V. Korobchenkob, A.P. K...

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The brown marmorated stink bug, Halyomorpha halys (Stål) (BMSB) is an exotic invasive insect originating in East Asia, currently causing significant damage to fruits, vegetables and other crops throughout most of the Mid-Atlantic states of the U.S. It also is a nuisance pest, entering homes in the fall in search of suitable overwintering sites. Two formulations of BotaniGard(®) with a strain of...