协同进化组知识库

Sentinel gardens are effective in assessing the risk of insect or pathogen invasions on plants from offshore regions. Limited knowledge exists on wood borers' potential impact on expatriate plants and host stress levels. We surveyed wood borers colonizing 11 North American tree species planted in two sentinel gardens in China, recording 38 species from 9 families, mainly Curculionidae (Scolytinae), Cerambycidae, and Cossidae. Quercus texana was the most attacked host. Wood borers typically infest unhealthy or dead tissues, regardless of overall tree vitality. We identified species capable of colonizing healthy trees: Anoplophora chinensis (Forster) (Cerambycidae), Sinoxylon sp. (Bostrichidae), and Zeuzera coffeae (Nietner) (Cossidae). Several insects colonizing stressed trees included: Xylosandrus crassiusculus (Motschulsky), Xyleborus affinis (Eichhoff), Xylosandrus germanus (Blandford) (all Curculionidae-Scolytinae), and Chlorophorus sp. (Cerambycidae). Some, such as A. chinensis and Z. coffeae , are under-documented but potentially invasive pests with considerable regulatory importance. Most recorded species are already recognized as pest of live trees or invasive elsewhere, indicating a limited number of potentially invasive wood borers rather than an inexhaustible pool. This suggests that sentinel gardens are effective for pest prevention prioritization. We recommend three methodological improvements for pre-invasion assessments: 1) documenting the vitality of specific colonized tissues to avoid misrepresenting secondary colonizers as primary pests, 2) using fully digital data-management from tree planting to insect identification, and 3) routinely identifying pests using DNA.