Interactions Between the Entomopathogenic Fungi <I>Beauveria bassiana</I> (Ascomycota: Hypocreales) and the Aphid Parasitoid <I>Diaeretiella rapae</I> (Hymenoptera: Braconidae) on <I>Myzus persicae</I> (Hemiptera: Aphididae)

Abstract

The interactions between the entomopathogenic fungus Beauveria bassiana (Balsamo-Crivelli) Vuillemin (Ascomycota: Hypocreales) and the aphid parasitoid Diaeretiella rapae McIntoch (Hymenoptera: Braconidae) were evaluated under laboratory conditions. Nymphs of Myzus persicae Sulzer (Hemiptera: Aphididae) were first exposed to parasitoid females for 24 h and then 0, 24, and 48 h afterwards sprayed with a solution of B. bassiana. Likewise, aphids were also sprayed with B. bassiana and then exposed to parasitoids at 0, 24, and 48 h afterwards. Parasitism rate varied from 13 to 66.5%, and were significantly lower in treatments where the two agents were exposed within a 0-24 h time interval compared with the control (without B. bassiana). Parasitoid emergence was negatively affected in treatments with B. bassiana spraying and subsequent exposure to D. rapae. Decreases in longevity of adult females of the D. rapae F1 generation were observed in treatments with B. bassiana spraying. The application of these two biological control agents can be used in combination on the control of M. persicae, wherein this use requires effective time management to avoid antagonistic interactions.

Efficacy of indigenous entomopathogenic fungus, Beauveria bassiana (Balsamo) Vuillemin, isolates against the rose aphid, Macrosiphum rosae L. (Hemiptera: Aphididae) in rose production

“…Moreover, EPF can be used in combination with the parasitoids and predators, as biological control agents, for controlling the aphids. This method requires an effective time management in order to prevent the antagonistic interactions (Martins et al 2014 andSeiedy et al 2015).…”

Impact of Metarhizium robertsii on Adults of the Parasitoid Diachasmimorpha longicaudata and Parasitized Anastrepha ludens Larvae

“…This effect of the time interval between parasitization and fungal infection is well documented (e.g., Rashki et al [ 29 ], Aqueel and Leather [ 30 ], Askary and Brodeur [ 64 ]). Martins et al [ 39 ], reported a lower level of parasitism of Myzus persicae Sulzer (Homoptera: Aphididae) by Diaeretiella rapae Maclntosh (Hymenoptera: Braconidae) at 0 and 24 h before inoculation with B . bassiana.…”

“…They found that IGP was modulated in a dose- and age-dependent manner, and the effect of B. bassiana was stronger when the host was recently parasitized by T. triozae . According to Furlong and Pell [ 24 ], entomopathogenic fungal infections can compromise the development of pre-existing parasitoids in hosts, and several studies determined the susceptibility of adult parasitoids to various EPFs, and the interactions occurring within the host insects [ 27 , 30 , 31 , 34 , 35 , 36 , 37 , 38 , 39 , 40 , 41 ].…”

Interactions between the entomopathogenic fungus Beauveria bassiana and the Neotropical predator Eriopis connexa (Coleoptera: Coccinellidae): Implications in biological control of pest

“…Studies about interactions between entomopathogenic fungi and other natural enemies (parasitoids and predators) have been performed worldwide (Roy et al 2006;Ormond et al 2011;Martins et al 2014;Bayissa et al 2016). However, there is very little information about interactions with other natural enemies in Coccinellidae species in general and E. connexa in particular.…”