Northward range expansion by Nezara viridula (Hemiptera: Pentatomidae) in Shikoku and Chugoku Districts, Japan, possibly due to global warming

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Abstract

Field surveys and light trap catches of <i>Nezara viridula</i> and <i>N. antennata</i> (Hemiptera: Pentatomidae) in Shikoku and Chugoku Districts, Japan showed that <i>N. viridula</i> is now distributed along the northern coastline of Shikoku District, and in Yamaguchi Prefecture, and along the northern coastline of Shimane Prefecture, south of Izumo, Chugoku District. The present data together with previous reports suggest that the northward range expansion of <i>N. viridula</i> is possibly due to global warming because the monthly mean temperature for January in newly invaded areas has exceeded 5°C in recent years, for example, since 1986 in Fukuoka, below which the winter mortality of <i>N. viridula</i> adults becomes higher. Around the northern limit of <i>N. viridula</i> in Shimane Prefecture, it was not found in April–August 2008 because the monthly mean temperature for January 2008 fell below 5°C, below which the winter mortality of <i>N. viridula</i> becomes higher. Thus, the northern limit retreated depending on winter temperature. We confirmed the absence of <i>N. viridula</i> from 1979 until August 2008 in Izumo, Shimane Prefecture, and in 2007–2008 in Tottori Prefecture. Most areas along the southern seacoast in Shikoku District were occupied only by <i>N. viridula</i>, suggesting that it has replaced <i>N. antennata</i> by interspecific mating. In the Chugoku District, no area was occupied only by <i>N. viridula</i>, but it was more abundant than <i>N. antennata</i> in southern Yamaguchi Prefecture, indicating that <i>N. viridula</i> is now replacing <i>N. antennata</i> in that area.

Journal

  • Applied Entomology and Zoology

    Applied Entomology and Zoology 44(3), 429-437, 2009

    JAPANESE SOCIETY OF APPLIED ENTOMOLOGY AND ZOOLOGY

Cited by:  1

Codes

  • NII Article ID (NAID)
    130000143024
  • NII NACSIS-CAT ID (NCID)
    AA00543238
  • Text Lang
    ENG
  • Article Type
    Journal Article
  • ISSN
    0003-6862
  • NDL Article ID
    10329304
  • NDL Source Classification
    ZR4(科学技術--生物学--動物)
  • NDL Call No.
    Z53-M423
  • Data Source
    CJPref  NDL  J-STAGE 
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