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Route of infection and hematological effect of Metarhizium anisopliae (Metsch.) Sorokin on Dysdercus cingulatus (Fab.) adult
Author(s) -
Sahayaraj Kitherian,
Borgio Jesu Francis,
Lucini Luigi
Publication year - 2014
Publication title -
journal of basic microbiology
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.58
H-Index - 54
eISSN - 1521-4028
pISSN - 0233-111X
DOI - 10.1002/jobm.201200258
Subject(s) - metarhizium anisopliae , biology , hemolymph , entomopathogenic fungus , conidium , fungus , larva , bristle , microbiology and biotechnology , biological pest control , botany , beauveria bassiana , brush , electrical engineering , engineering
The primary objective of this work was to identify, under laboratory conditions, the route of infection and hemogram of Dysdercus cingulatus (Fab.) adults by Metarhizium anisopliae . The infection process in D. cingulatus by M. anisopliae involved the conidia adherence to the host cuticle and germination after 24 h post‐infection, accompanied by falling of bristles. The subsequent step, within 24–48 h post‐infection, comprised penetration of fungus through spiracles, root of bristles, hemolymph, and the three dorsal sacs. Subsequently, within 72–96 h post‐infection, the fungus penetrated into trachea and sacs, then emerged on cuticular surface and was found to be maximum in hemolymph. A great decrease in hemocytes count was observed within 96 h from infection. The hemosomic index (HSI) decreased gradually as the incubation period increased. As far as we know, this is the first study to know the mechanism of action of M. anisopliae to D. cingulatus .