日本三节叶蜂分散繁殖的观察

A Strategy of Dispersive Breeding in Arge niponicus(Rohwer)

本文较系统观察了日本三节叶蜂Arge niponicus(Rohwer)(膜翅目:叶蜂科)成虫的羽化对策。结果表明,5月中旬作茧的个体能分散在335d内羽化,即:29.6%非滞育的茧的羽化期出现在6月;68.3%的越夏茧的羽化期出现在7月21日至9月21日;2.1%越夏-越冬的茧羽化期出现在第二年的4月。揭示了该虫在生活史上有明显的分散繁殖现象。

The strategy of adult emergence in Arge niponicus was systematically observed. The results ,showed the those prepupae in cocoons formed in mid-May extended their emergence for 335 days, i.e. 29.6% （non-diapause prepupae） occurred in June, 68.3% （aestivating prepupae） in late July to late September, 2.1% （aestivating-hibernating prepupae） in next April.