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亞洲玉米螟（Ostrinia furnacalis（Guenée））之羽化、交尾及產卵行為
ECLOSION, MATING AND OVIPOSITION OF ASIAN CORN BORER, OSTRINIA FURNACALIS (GUENÉE)
摘要
在25±1℃，70±5％RH及8至12小時光照條件下，觀察亞洲玉米螟（Ostrinia furnacalis（Guenée））成蛾的羽化時間，及不同雌雄數配對對其交尾與產卵繁殖的影響。結果顯示玉米螟每日羽化高峯約在黑暗後1～2小時，成蛾以一、二日齡時交尾率較高，交尾時刻多在黑暗後4小時，交尾持續時間可達65.8分鐘。大部份玉米螟雌成蟲一生僅交尾一次，交尾率約在62～100％。以雌雄各一隻或一隻雌蛾配對二隻雄蛾時之交尾率較低。增加雌、雄蛾配對蟲數對雌蛾產卵數無顯著的影響。以一雌一雄配對時所生產之卵塊最大，每塊平均含41粒卵，唯變異亦最大；各種配對型式雌蛾所產下的卵孵化率差異不大。以一雌一雄及一隻雌蛾配對二隻雄蛾時產未受精卵比率較高，介於37～44％之間。雌雄蛾壽命以一隻雌蛾配對一隻雄蛾時相差最大，雄蛾較雌蛾短1.8日。雌蛾無精包者及僅含一個精包未開者，大都不產卵，若產卵時，皆為未受精卵；精包開者大多產下受精卵；若含兩個以上精包者，僅其中一個精包具開口。
關鍵字
無資料並列摘要
The pattern of eclosion and the effects of various paired combinations on mating and fecundity of Ostrinia furnacalis (Guenée) were observed under the conditions of at 25±1°C, 70±5% RH, and 8-12 hours photophase. The highest eclosion peak of adults was observed at 1-2 hours after dark. The mating activities were most found on 1-2 days niter eclosion. The mating behavior started about 4 hours after dark. The copulation lasted about 65.8 minutes. Most adult moths mated once in their life. The mating rate ranged from 62% to 100%. The lowest mating rate was found with the mating pattern of 1♀×1♂or 1♀×2♂. There was no significant difference among the fecundity of various paired patterns. When 1♀×1♂ pair of adults were made the size of egg mass was the largest (41 eggs/mass) and the variation of mass size was also the largest. No significant difference was found among the hatchabilities of various paired patterns except 4♀×6♂. The percentage of infertile eggs was found higher at the paired of 1♀×1♂ or 1♀×2♂ (between 37 and 44%) than the other paired combination. The lowest percentage of infertile eggs (2%) was found at the paired of 2♀×5♂. The longevity of the male was 1.8 days less tnan female in 1♀×1♂. Female adults without spermatophore or with a closed spermatophore mostly can not deposit eggs, if eggs were deposited, all of them were infertile. Most female adults with an opened spermatophore will deposit fertile eggs. If females contained two or more spermatophores, only one opened spermatophore was found.