Strophosoma melanogrammum - a pest on young beech trees and on European mountain ash in the Zdar region [Czech Republic]  [1999]

Urban, J. (Mendelova Zemedelska a Lesnicka Univ., Brno. Fakulta Lesnicka a Drevarska)

Access the full text:

A mass outbreak of the polyphagous weevil Strophosoma melanogrammum occurred in 1995 to 1997 after an excessively dry and warm period on the shelterwood European mountain ash (Sorbus aucuparia) in premature spruce stands and young growths, and to a lesser extent on the European beech (Fagus sylvatica) in young plantations. Field and laboratory studies did not reveal any males in S. melanogrammum populations; reproduction of this species is exclusively parthenogenetic. Beetles appear on host tree species since late April. All last year's beetle die in September (or in October at the latest). The beetles start laying eggs in about three weeks of feeding on leaves, needles or on tender bark and buds of young tree species. Larvae emerge from eggs within 10-15 days and they live on herb and grass roots.

Other subjects

  • huespedes
  • organismos para control biologico
  • cycle de developpement
  • danos por ramoneo
  • hote
  • ciclo vital
  • sorbus aucuparia
  • browsing damage
  • auxiliaire de lutte biologique
  • reproduccion
  • infestacion
  • oviposicion
  • ponte
  • life cycle
  • microctonus
  • hosts
  • degat du au broutage
  • oviposition
  • fagus sylvatica
  • infestation
  • biological control organisms
  • curculionidae
  • reproduction

From the journal

Journal of Forest Science - UZPI (Czech Republic)

ISSN : 0024-1105