ブユ 5 種の吸蜜活動と産卵経験率などの観察

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書誌事項

タイトル別名
  • Observation on nectar-sucking behavioraand parous rates of five species of blackflies
  • ブユ 5シュ ノ キュウミツ カツドウ ト サンラン ケイケンリツ ナド ノ

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抄録

An investigation on the quantity and the sugar composition of sucked nectars, and the parous rates was conducted on the blackflies collected at Kohzu ranch in Gunma prefecture from June 22 to 24,1974. Five species of the blackflies were recognized. Female of Prosimulium yezoense exhibited the highest nectar-sucking rate of 91.8%, followed by female and males of Simulium arakawae, 90.2 and 87.0 respectively, females of P. jezonicum, 86.2%, the female of S. japonicu, , 81.7%. and females of S. iwatense, 70.0%. These rates were much higher than those observed in horse-flies or mosquitoes. The volume of fully-sucked nectar was 1.7-2.6 l in 3 species of Genus Simulium and 2.4-2.9μl in 2 species of Genus Prosimulium, the variation being dependent on the body size. The sugar contents per 1μl nectar recovered from diverticulums of fully-sucked individuals were 167 to 792 g or 16.7 to 79.2 percent, when analyzed by phenol sulfuric acid method. Paper chromatographic analysis revealed 6 different sugars; fructose, glucose, sucrose, maltose, melibiose and raffinose, were in their sucked nectars, the composition of which varied individually. More than half of the fully sucked blackflies possessed 4 or 5 different sugars excluding either sucrose or sucrose and raffinose, although sucrose was always found in nectars sucked by horseflies at the same field. This indicates the species difference in nectar sources. The parous rate of 36.7% in S. iwatense was significantly low in contrast to the other 4 species which showed the value ranging from 65.0 to 71.3%. The rates of individuals having sac-like relics, however, relatively high in all 5 species, the lowest being 46.2% in S. japonicum. These high rates may be attributed to fact that the trapping station was located close to a stream (approximately 20m).

収録刊行物

  • 衛生動物

    衛生動物 28 (4), 401-407, 1977

    日本衛生動物学会

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