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Entomophaga

, Volume 21, Issue 1, pp 31–38 | Cite as

Studies on the susceptibility ofOryctes rhinoceros to some entomogenous fungi

  • G. C. M. Latch
Article

Abstract

Cultures ofMetarhizium anisopliae(Metsch.) Sor.,Beauveria bassiana(Bals.) Vuill.,B. tenella(Delac.) Siem.,Aspergillus fumigatusFres. andPaecilomyces farinosus (Dicks, exFr.) Brown & Smith were tested for pathogenicity toOryctes rhinoceros L. All the long spored cultures ofM. anisopliae isolated fromOryctes spp. were equally pathogenic toO. rhinoceros. Most of the 23 short spored cultures from other insects caused lesions onOryctes larvae but only 5 isolates were lethal. SomeBeauveria isolates caused brown lesions on larvae but generally these larvae developed into normal adults. One isolate ofB. bassiana fromCarpocapsa pomonella L. killed larvae at the time of pupation. Cultures ofA. fumigatus andP. farinosus were not pathogenic. A method for growingM. anisopliae on oats for large scale field use is described.

Keywords

Plant Pathology Scale Field Normal Adult Large Scale Field Spore Culture 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.

Résumé

Des cultures deMetarhizium anisopliae, deBeauveria bassiana, deB. tenella, d'Aspergillus fumigatus et dePaecilomyces farinosus ont été examinées en fonction de leurs effets pathogènes surOryctes rhinoceros. Toutes les cultures à spores longues deM. anisopliae isolées desOryctes spp. ont été également pathogènes pourO. rhinoceros. La plupart des 23 cultures à spores courtes obtenues à partir d'autres insectes ont causé des lésions sur les larves d'Oryctes mais cinq seulement ont été mortelles. Certaines souches deBeauveria ont causé des lésions brunes sur les larves mais, en général, ces larves ont donné des adultes normaux. Une culture deB. bassiana isolée deCarpocapsa pomonella a tué les larves au moment de leur métamorphose en chrysalides. Les cultures d'A. fumigatus et deP. farinosus n'ont pas eu d'effet pathogène. Une méthode de culture deM. anisopliae sur avoine pour l'utiliser sur de grandes surfaces est décrite.

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Copyright information

© Le François 1976

Authors and Affiliations

  • G. C. M. Latch
    • 1
  1. 1.Plant Diseases DivisionD.S.I.R.Palmerston NorthNew Zealand

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