| In 2002, the spring swarming season came unusually early |
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In 2002, we had a forward spring in Osaka Prefecture. Cherry trees blossomed two weeks earlier than an average year. I am not sure if the Japanese honeybees in my yard joined the cherry blossom, they first swarmed on April 2. It was more than two weeks earlier than usual (the first swarming in the year 2001 was on April 19).
In this opportunity, getting many people's cooperation, I gathered information on the first swarming date in the year of 2002. The result shown below says that the first swarming was earlier in many parts of the country. It explains well that not only cherry trees but also honeybees' lives are responsive to climate.
場所 初分蜂 その後の分蜂 報告者 鹿児島市平川 2/25 T.S 山梨県中巨峰郡 3/15 4/7 清水 治 長崎県長崎市 3/21 3/25.3/31.4/7.4/8 T.N 大阪府守口市 4/2 4/3.4/15.4/22 菅原道夫 愛媛県新居浜市 4/3 4/6.4/8.4/9.4/14 SONO 大阪府枚方市 4/8 4/19.4/23 菅原道夫 岐阜県西濃 4/15 三重県四日市市 4/18 KOH 兵庫県伊丹市 4/20 4/22.4/24 B.M 静岡県伊豆 4/20 4/25 山本 *** Please give me your data on the swarming date in 2002 *** According to the report written by Dr. Sasaki (Tamagawa University), the swarming season of Japanese honeybees is April to June in Tokyo. In my investigation, in the whole of the Japanese archipelago, it depends on climate and could begin at late February.