Moio Velozo, Simone Graziele

Stephan, Dietrich

Wilcken, Carlos Frederico

English

JKI Open Journal Systems (Julius Kühn-Institut)

10th Young Scientists Meeting, Siebeldingen, Germany, November 08-10, 2017 Velozo et al.     Effect of temperature on growth and sporu-lation of the Brazilian strains Beauveria bassiana and Metarhizium anisopliae for control of the Bronze Bug Thaumastocoris peregrinus  Simone Graziele Moio Velozo1, 2, Carlos Frederico Wilcken2 and Dietrich Stephan1 1Julius Kühn-Institut, Institute for Biological Control, Darmstadt 2Sao Paulo State University, UNESP-FCA, Brazil E-mail of corresponding author: simonemvelozo@gmail.com.br   The bronze bug Thaumastocoris peregrinus Carpintero & Dellapé, 2006 (Hemiptera: Thaumastocoridae) is an eucalyptus pest of Australian origin, but it has causing damage to eucalyptus plantation in Brazil since 2008, year of introduction into the country. The symptoms caused by this pest are leaf silvering, leaf bronzing and defolia-tion in susceptible Eucalyptus species or clones. The success for control of T. peregrinus involves the Classical biologi-cal control with an egg parasitoid Cleruchoides noackae Lin & Huber, 2007 (Hymenoptera: Mymaridae), introduced from Australia, and the inundative bio-logical control using entomopathogenic fungi. Since, these microorganisms show advantages, because these are not closely related to the development of the insect, and can infect via contact.  Among the entomopathogenic fungi already reported infecting and causing mortality of the bronze bug, Beauveria bassiana and Metarhizium anisopliaepresent good and promising levels of control. And considering that the tem-perature is limiting factor for fungi de-velopment and sporulation, the purpose of this study was to determine of the optimal temperature condition for the radial growth and sporulation of the two brazilian’s strains, B. bassiana and M. anisopliae, for following mass produc-tion, and aiming the field application. For this Petri dishes were set up with MPA medium and each strain was incu-bated at 15, 20, 25, 30 and 37° C.  Both strains showed a higher radial growth at the temperature of 25° C. Sporulation of B. bassiana at low tem-peratures (15, 20 and 25° C) was signifi-cantly different of the high tempera-tures, and for M. anisopliae the highest temperatures can be considerate the optimal. The isolates did not grow at  37° C.  Further results on mass production and formulation will be discussed.  Berichte aus dem Julius Kühn-Institut 192 21

Effect of temperature on growth and sporulation of the Brazilian strains Beauveria bassiana and Metarhizium anisopliae for control of the Bronze Bug Thaumastocoris peregrinus

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Effect of temperature on growth and sporulation of the Brazilian strains Beauveria bassiana and Metarhizium anisopliae for control of the Bronze Bug Thaumastocoris peregrinus

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