Anais da Sociedade Entomológica do Brasil (2000) 29, 515-521

Daniel R. Sosa-Gómez and Sérgio B. Alves (2000)
Temperature and relative humidity requirements for conidiogenesis of Beauveria bassiana (Deuteromycetes: Moniliaceae)
Anais da Sociedade Entomológica do Brasil 29 (3), 515-521
Abstract: Assays were conducted to assess the number of Beauveria bassiana (Bals.) Vuill. conidia on Diatraea saccharalis F. (Lepidoptera: Pyralidae), Nezara viridula (L) and Piezodorus guildinii (Westwood) (Hemiptera: Pentatomidae) corpses maintained at different levels of relative humidity (RH) (75%, 80%, 85%, 90% and 100%) and temperatures (22°C, 26°C, 30°C and 34°C) during five days. The isolates produced conidia when exposed to RH from 75% to 100%. Conidiogenesis was incipient at 75% RH on D. saccharalis larvae, but did not occur on N. viridula and P. guildinii. In ideal conditions of RH and during 10 days, mathematical equations were developed to estimate the number of conidia produced by isolates ARSEF 933 and ARSEF 2515. Conidia number were shown to be dependant on RH, temperature, fungal isolate, host species, host stage, and time.
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Database assignments for author(s): Daniel R. Sosa-Gomez, Sérgio Batista Alves

Research topic(s) for pests/diseases/weeds:
biocontrol - natural enemies
Research topic(s) for beneficials or antagonists:
general biology - morphology - evolution
environment/habitat manipulation

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Pest and/or beneficial records:

Beneficial	Pest/Disease/Weed	Crop/Product	Country	Quarant.
	Nezara viridula
	Diatraea saccharalis
	Piezodorus guildinii
Beauveria bassiana (entomopathogen)	Nezara viridula
Beauveria bassiana (entomopathogen)	Diatraea saccharalis
Beauveria bassiana (entomopathogen)	Piezodorus guildinii