【摘要】 由于云南不同的气候、寄主和环境特点,纵坑切梢小蠹在云南松上出现许多与在苏格兰松上不同的繁殖特点。在云南,纵坑切梢小蠹通常侵入云南松活立木干部繁殖,梢受害程度较重的云南松被选择作为繁殖材料的机率较大。11月至次年5月为该小蠹蛀干繁殖的主要时期,其中1月中旬和3月中旬为转干的峰期,28.2%的成虫在这2个时期转干,蛀干多从大枝及树干上部开始逐步往下,2.6～5.5m为侵入孔较为集中的树段,72.7%的侵入孔分布在这一区域。在试验条件下,10%的雌虫没有蛀坑道产卵,35%的雌虫蛀一个坑道,55%的雌虫蛀2个以上坑道,坑道平均长度为5.6cm,每坑道平均卵刻数量为43.2个,卵刻数量与坑道长度呈正相关。更多还原

【Abstract】 Due to the special climatic, host and environmental conditions, the reproductive biology of Tomicus piniperda in Yunnan differed from that in Europe in some ways. In the province, T. piniperda preferred the shoot-attacked trees as brood material, and the main reproductive period was from November to the next May. With two peak periods of moving adults, middle January and middle March, when 28.2 percent moving adults occurred. The entrance holes generally occurred at the upper and middle parts of the boles or the large branches, with 72.7 percent of the entrance holes produced on boles at 2.6～5.5 meter high above the ground. In laboratory, 55 percent of the females made more than two tunnels. On an average, the length of the egg gallery was 5.6 cm, and 43.2 eggs were laid in per gallery. Positive correlation was observed between the egg gallery length and the number of eggs laid within the gallery.更多还原