Native entomopathogenic fungi isolated from Duzce, Turkey and their virulence on the mealworm beetle [Tenebrio molitor L. (Coleoptera: Tenebrionidae)]

Issue Date

3-2019

Abstract

Native entomopathogenic fungi were isolated from Duzce province of Turkey and their virulence was tested against Tenebrio molitor larvae using direct spraying and grain spraying methods. Forty-five isolates were obtained. Beauveria bassiana was obtained from 24.07 % of the soil samples and metarhizium anisopliae from 11.11 % of the soil samples. The level of insecticidal activity of the isolates fluctuated between 20% and 100%, when directly sprayed on the larvae. In the direct spray application, the most effective isolates were B. bassiana YK11, TK16, M. anisopliae YK43, YK44 and YK45. These isolates caused 100% mortality on the larvae of T. molitor at 168 h. In 12 isolates, there was 100% mortality at 240 h under laboratory condition. Lethal time (LT50) of B. bassiana and M. anisopliae isolates varied from 10.48 to 127.40 h. Virulence of the fungal isolates in 3% (w/v) aqueous suspension was lower than that in the 10% aqueous (w/v) suspension in the grain spray application. Virulence of fungal isolates was significant in 10% aqueous (w/v) suspension and 93.33% and 100% mortality were observed in B. bassiana YK23 and YK26, respectively, at 240 h. B. bassiana and M. anisopliae isolates showed promising effectiveness for the control of insect pests.

Source or Periodical Title

Philippine Agricultural Scientist

ISSN

0031-7454

Volume

102

Issue

1

Page

82-89

Document Type

Article

College

College of Agriculture and Food Science (CAFS)

Physical Description

graphs

Language

English

Subject

Mealworm beetle; Pest control; Biological pest control agents

En – AGROVOC descriptors

TENEBRIO MOLITOR; COLEOPTERA; SPECIES; TENEBRIONIDAE; ENTOMOGENOUS FUNGI; BEAUVERIA BASSIANA; METARHIZIUM ANISOPLIAE; INSECT CONTROL; BIOLOGICAL CONTROL; PATHOGENICITY; PEST CONTROL; PEST RESISTANCE

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