NDLI: Biological control of Rhipicephalus (Boophilus) annulatus by different strains of Metarhizium anisopliae, Beauveria bassiana and Lecanicillium psalliotae fungi

Content Provider	Springer Nature Link
Author	Pirali Kheirabadi, Khodadad Haddadzadeh, Hamidreza Razzaghi Abyaneh, Mehdi Bokaie, Saeed Zare, Rasoul Ghazavi, Mehran Shams Ghahfarokhi, Masoomeh
Copyright Year	2006
Abstract	Virulence of 11 native strains of entomopathogenic fungi; Metarhizium anisopliae (three strains), Beauveria bassiana (six strains) and Lecanicillium psalliotae (two strains) collected from different parts of Iran, were studied against different developmental stages of Rhipicephalus (Boophilus) annulatus. After the exposure of ticks to the fungal strains in different concentrations (i.e. 103, 105, 107 conidia/ml), various parameters such as mortality rate and reproductive efficiency of engorged females, mortality of unfed tick larvae and eclosion percentage of infected eggs were evaluated to determine the fungal virulence. Based on the obtained results, five strains including M. anisopliae (IRAN 437 C and DEMI 001), B. bassiana (IRAN 403 C) and L. psalliotae (IRAN 468 C and IRAN 518 C) were found to be virulent to various stages of tick developmental cycle. Mortality rate of engorged females was found to be dose-dependent with regard to the conidial concentration used. Total mortality rates of 90–100%, 70% and 56.6% were observed for M. anisopliae (IRAN 437 C and DEMI 001), B. bassiana (IRAN 403 C) and L. psalliotae (IRAN 468 C), 6–11 days post inoculation (PI) with 107 conidia/ml, respectively. Most strains were able to inhibit egg laying by females in the range of 0–26% in different conidial concentrations. The results indicated that the mean egg laying of treated engorged tick females exposed to M. anisopliae (IRAN 437 C) was less than the mean values of those treated with other fungal strains. Results revealed 89.1%, 35.5% and 56.3% decrease in egg hatchability and 88.69%, 78.15% and 59.74% reduction in reproductive efficiency of the ticks using 107 conidia/ml of M. anisopliae (IRAN 437 C), B. bassiana (IRAN 403 C) and L. psalliotae (IRAN 468 C), respectively. In general, the entomopathogenic effects of native M. anisopliae and B. bassiana against various developmental stages of R. (B.) annulatus were confirmed in the present work. Likewise, although L. psalliotae, which was introduced for the first time as an entomopathogenic fungus against tick had not more than 13.3% mortality effect against adult females, but its effect on egg hatchability and reproductive efficiency was remarkable.
Starting Page	1297
Ending Page	1302
Page Count	6
File Format	PDF
ISSN	09320113
Journal	Parasitology Research
Volume Number	100
Issue Number	6
e-ISSN	14321955
Language	English
Publisher	Springer-Verlag
Publisher Date	2006-12-22
Publisher Place	Berlin/Heidelberg
Access Restriction	One Nation One Subscription (ONOS)
Subject Keyword	Immunology Microbiology Medical Microbiology
Content Type	Text
Resource Type	Article
Subject	Infectious Diseases Veterinary Parasitology Insect Science

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