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首页> 外文学位 >An examination of the milfoil weevil (Euhrychiopsis lecontei) within Eurasian watermilfoil beds in Pigeon Lake; Canada: A potential biological control (Ontario).
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An examination of the milfoil weevil (Euhrychiopsis lecontei) within Eurasian watermilfoil beds in Pigeon Lake; Canada: A potential biological control (Ontario).

机译：在鸽子湖欧亚水乳白质层中的白叶象甲（Euhrychiopsis lecontei）的检查；加拿大：潜在的生物防治措施（安大略省）。

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摘要

The goal of this study was to identify factors that affect the distribution and abundance of the milfoil weevil, Euhrychiopsis lecontei, and in particular, to determine its overwinter habitat requirements. Soil samples taken during the fall of 2000 and 2001 on Pigeon Lake, Ontario indicate that adult weevils leaving the water in the fall move into the soil once the soil temperature falls to about 4°C. Weevil density declined with distance from shore, and weevils moved deeper into the soil as the temperature declined in the fall. A soil preference experiment conducted in the fall of 2001 suggests that weevils prefer a silty loam soil with forest vegetation debris rather than the types of soil-vegetation combinations found on developed shorelines. Summer sampling of watermilfoil beds revealed that weevil density is strongly related to milfoil stem density, and that beds adjacent to undeveloped shorelines harbor significantly more weevils than those adjacent to developed shorelines. An integrated management approach should be used to control Eurasian watermilfoil in the Kawartha Lakes, which utilizes the milfoil weevil along with a combination of other control methods that are more effective in high use areas.
机译：这项研究的目的是找出影响小叶象鼻虫（italic> Euhrychiopsis lecontei

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