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Effet d'une basse température sur la physiologie de Sitophilus zeamais Motschulsky et de Sitophilus oryzae (L.) (coleoptera: curculionidae) au cours de l'entreposage de riz.

Action of low temperature on physiology of Sitophilus zeamais Motschulsky and Sitophilus oryzae (L.) (coleoptera: curculionidae) in rice storage.

Auteurs : NAKAKITA H., IKENAGA H.

Type d'article : Article

Résumé

Low temperature storage of rice is extensively practised to control insect pests in Japan, and has enabled the use of conventional fumigants to be reduced since 1991. Both species exhibited a diphasic decline in respiratory rate as temperature was reduced, giving a sharp fall in respiratory response between 30 and 20 deg C and a moderate fall between 15 and 5 deg C. Both hatching and metamorphosis of each species were completely inhibited at 10 deg C. Population increase of S. oryzae was completely suppressed at 15 deg C, while a small number of F(1) beetles of s. zeamais emerged. The cost-benefit of maintaining low temperatures to control insect pests in the warehouse was assessed.

Détails

  • Titre original : Action of low temperature on physiology of Sitophilus zeamais Motschulsky and Sitophilus oryzae (L.) (coleoptera: curculionidae) in rice storage.
  • Identifiant de la fiche : 1999-0264
  • Langues : Anglais
  • Source : J. stored Prod. Res. - vol. 33 - n. 1
  • Date d'édition : 1997

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