Passive vectoring of entomopathogenic fungus Beauveria bassiana among the wax moth Galleria mellonella larvae by the ectoparasitoid Habrobracon hebetor females

Vadim Yu.Kryukov; Natalia A.Kryukova; Maksim V.Tyurin; Olga N.Yaroslavtseva; Viktor V.Glupov

首页> 中文期刊> 《中国昆虫科学：英文版》 >Passive vectoring of entomopathogenic fungus Beauveria bassiana among the wax moth Galleria mellonella larvae by the ectoparasitoid Habrobracon hebetor females

Passive vectoring of entomopathogenic fungus Beauveria bassiana among the wax moth Galleria mellonella larvae by the ectoparasitoid Habrobracon hebetor females

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Females of the ectoparasitoid Habrobracon hebetor attack and envenomate numerous host individuals during oviposition.The vectoring of the entomopathogenic fungus Beauveria bassiana during the adhesion stage by ectoparasitoid females among the wax moth larvae Galleria mellonella was explored under laboratory conditions.Vectoring occurred both from infected parasitoids to wax moth larvae and from infected to healthy wax moth larvae by parasitoids.The efficacy of vectoring in both cases was dose dependent.Parasitoid females were unable to recognize infected larvae in a labyrinth test.In addition,the presence of H.hebetor females significantly (1.5-13 fold) increased the mycoses level in clusters of G.mellonella,with 40％ of the larvae infected with fungal conidia.Envenomation by H.hebetor increased conidia germination on the cuticles of the wax moth larvae by 4.4 fold.An enhanced germination rate (2 fold) was registered in the nhexane epicuticular extract ofenvenomated larvae compared to that of healthy larvae.Both envenomation and mycoses enhanced the phenoloxidase (PO) activity in the integument of G.mellonella and,in contrast,decreased the encapsulation rate in hemolymphs.We hypothesize that changes in the integument property and inhibition of cellular immunity provide the highest infection efficacy of entomopathogenic fungi with H.hebetor.

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《中国昆虫科学：英文版》 |2018年第4期|643-654|共12页
作者
Vadim Yu.Kryukov; Natalia A.Kryukova; Maksim V.Tyurin; Olga N.Yaroslavtseva; Viktor V.Glupov;
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Institute of Systematics and Ecology of Animals Siberian Branch of Russian Academy of Science, Novosibirsk, Russia;

Institute of Systematics and Ecology of Animals Siberian Branch of Russian Academy of Science, Novosibirsk, Russia;

Institute of Systematics and Ecology of Animals Siberian Branch of Russian Academy of Science, Novosibirsk, Russia;

Institute of Systematics and Ecology of Animals Siberian Branch of Russian Academy of Science, Novosibirsk, Russia;

Institute of Systematics and Ecology of Animals Siberian Branch of Russian Academy of Science, Novosibirsk, Russia;

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Passive vectoring of entomopathogenic fungus Beauveria bassiana among the wax moth Galleria mellonella larvae by the ectoparasitoid Habrobracon hebetor females

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