Detection of chill injuries in the pupae of the onion maggot, Delia antiqua (Diptera : Anthomyiidae)  [in Japanese]

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Abstract

To clarify tissues susceptible to chill injuries in the pupae of the onion maggot, Delia antiqua (Diptera : Anthomyiidae), 5 d old non-diapausing pupae (ND5) were subjected to a non-freezing temperature of -20℃, with or without prior acclimation at 5℃. Cold acclimation of pupae for 8 d or longer substantially decreased the mortality after exposure to -20℃ for 5 d. Analysis of the morphology of dead pupae suggested that they died at two discrete developmental stages : after formation of the adult morphology (type 1), and at a stage indistinguishable from ND5 in appearance (type 2). The two types of death were differentially induced by changing the period of -20℃ treatment. A majority of pupae exhibited type 1 death after a 2 d treatment, whereas type 2 death was predominant after a 12 d treatment. Regarding the type 1 death, pharate adults appeared to have died because they failed to emerge from the puparial case. Possibly, the neuromuscular system was impaired by the short term chilling at -20℃. On the other hand, the Malpighian tubules were seriously damaged by long term chilling at -20℃, and this is thought to be the cause of type 2 death.

Journal

Applied entomology and zoology   [List of Volumes]

Applied entomology and zoology 40(1), 193-198, 2005-02-25  [Table of Contents]

Japanese Society of Applied Entomology and Zoology

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Codes

  • NII Article ID (NAID) :
    10014474676
  • NII NACSIS-CAT ID (NCID) :
    AA00543238
  • Text Lang :
    JPN
  • Article Type :
    ART
  • ISSN :
    00036862
  • NDL Article ID :
    7265567
  • NDL Source Classification :
    ZR4(科学技術--生物学--動物)
  • NDL Call No. :
    Z53-M423
  • Databases :
    CJP  NDL  NII-ELS  J-STAGE