Journal of Applied Entomology - Zeitschrift für angewandte Entomologie (1998) 122, 301-305
A. Monino, S.B. Alves and R.M. Pereira (1998)
Efficacy of Beauveria bassiana (Balsamo) Vuillemin isolates for control of stored-grain pests
Journal of Applied Entomology - Zeitschrift für angewandte Entomologie 122 (6), 301-305
Abstract: Seventy two isolates of Beauveria bassiana or Metarhizium anisopliae were screened for control of Sitophilus oryzae, S. zeamais (Col., Curculionidae), and Rhyzopertha dominica (Col., Bostrychidae). Beauveria bassiana isolates produced highest mortalities against all three hosts. Ten isolates (all B. bassiana) were selected for further experimentation in the second phase of selection process. Bioassays were conducted by, inoculating 50 adult insects of each species, maintained at 26 ± 0.5°C, 70 ± 10% RH, 12 h photophase, for 10 days. The cumulative mortalities after 10 days exposure and lethal time for 50% of the population (LT50) were calculated and compared. S. oryzae and S. zeamais were less susceptible to B. bassiana isolates than R. dominica, which was completely killed by several isolates. Isolate 476 was the most virulent to S. oryzae, and isolate 604 was the most virulent to S. zeamais. Isolate 604 was best overall, but isolates 476 and 643 should also be considered as control agents for stored-grain pests. A combination of isolates may be advantageous if mixed pest infestations occur.
(The abstract is excluded from the Creative Commons licence and has been copied with permission by the publisher.)
Link to article at publishers website
Database assignments for author(s): Roberto M. Pereira, Sérgio Batista Alves
Research topic(s) for pests/diseases/weeds:
biocontrol - natural enemies
Research topic(s) for beneficials or antagonists:
evaluation - screening - selection
