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Annual fluctuations in the immigrant density of rice planthoppers, Sogatella furcifera and Nilaparvata lugens (Hemiptera: Delphacidae), in the Kyushu district of Japan, and associated meteorological conditions

Annual fluctuations in the immigrant density of rice planthoppers, Sogatella furcifera and... We analyzed overseas immigrations of rice planthoppers in Kyushu, Japan, based on trap data collected during June–July in 2000–2011. The immigrant density was high in 2006, whereas it was low in 2008 and 2011. To understand these annual fluctuations, we investigated the relationships among trap catches and the following three meteorological conditions: (1) the average temperature during January–February in North Vietnam (T NV), where planthoppers successfully overwinter; (2) the strong upper wind from North Vietnam to South China in April–May (UWVC), when the first stage of migration occurs; (3) the strong upper wind from South China to Kyushu in June–July (UWCJ), when the second stage of migration occurs. In 2008 and 2011, T NV values were 2.4–3.0 °C below the 2000–2011 average of 17.4 °C, and there were 9–13 fewer days with a strong upper wind (UWVC + UWCJ) in April–July compared with the 2000–2011 average of 25 days. This study showed that the rice planthopper immigrant density during the last 12 years correlated significantly with T NV and the number of days with a strong upper wind (UWVC + UWCJ) in April–July. Thus, the meteorological conditions affected the immigrant density of rice planthoppers in Kyushu. http://www.deepdyve.com/assets/images/DeepDyve-Logo-lg.png Applied Entomology and Zoology Springer Journals

Annual fluctuations in the immigrant density of rice planthoppers, Sogatella furcifera and Nilaparvata lugens (Hemiptera: Delphacidae), in the Kyushu district of Japan, and associated meteorological conditions

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References (22)

Publisher
Springer Journals
Copyright
Copyright © 2012 by The Japanese Society of Applied Entomology and Zoology
Subject
Life Sciences; Environmental Management; Plant Pathology; Zoology; Entomology; Applied Ecology; Agriculture
ISSN
0003-6862
eISSN
1347-605X
DOI
10.1007/s13355-012-0132-8
Publisher site
See Article on Publisher Site

Abstract

We analyzed overseas immigrations of rice planthoppers in Kyushu, Japan, based on trap data collected during June–July in 2000–2011. The immigrant density was high in 2006, whereas it was low in 2008 and 2011. To understand these annual fluctuations, we investigated the relationships among trap catches and the following three meteorological conditions: (1) the average temperature during January–February in North Vietnam (T NV), where planthoppers successfully overwinter; (2) the strong upper wind from North Vietnam to South China in April–May (UWVC), when the first stage of migration occurs; (3) the strong upper wind from South China to Kyushu in June–July (UWCJ), when the second stage of migration occurs. In 2008 and 2011, T NV values were 2.4–3.0 °C below the 2000–2011 average of 17.4 °C, and there were 9–13 fewer days with a strong upper wind (UWVC + UWCJ) in April–July compared with the 2000–2011 average of 25 days. This study showed that the rice planthopper immigrant density during the last 12 years correlated significantly with T NV and the number of days with a strong upper wind (UWVC + UWCJ) in April–July. Thus, the meteorological conditions affected the immigrant density of rice planthoppers in Kyushu.

Journal

Applied Entomology and Zoology – Springer Journals

Published: Sep 7, 2012

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