Effect of density of the termite, Reticulitermes speratus Kolbe (Isoptera: Rhinotermitidae), on the susceptibilities to Metarhizium anisopliae
Effect of density of the termite, Reticulitermes speratus Kolbe (Isoptera: Rhinotermitidae), on the susceptibilities to Metarhizium anisopliae
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DOI：
10.1303/aez.2003.125
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发表时间：
2003-02-01
影响因子：
1.3
通讯作者：
Yamaji, M
中科院分区：
文献类型：
--
作者：
Shimizu, S;Yamaji, M
单独饲养的白蚁对昆虫病原真菌金龟子绿僵菌高度敏感。相反，成群饲养的白蚁对金龟子绿僵菌具有高度的抗性。成群饲养时，经绿僵菌分生孢子在体表处理的白蚁，可在3h内将90%以上的分生孢子从角质层中清除，而单独饲养的白蚁附生分生孢子未见明显减少。在3h内，几乎所有群养白蚁的前部都含有分生孢子，但单独饲养的白蚁前部未检测到分生孢子。这些数据表明，巢伴侣的梳理功能之一是清除角质层中的异物，如真菌分生孢子，相互梳理行为对保护它们免受金龟子绿僵菌的感染非常有效。
Termites, Reticulitermes speratus Kolbe, reared individually were highly susceptible to the entomopathogenic fungus Metarhizilum anisopliae. In contrast, termites reared in groups were highly resistant to M. anisopliae. When reared in groups, the termites treated with M. anisopliae conidia on the body surface were groomed by their nestmates and more than 90% of the conidia were removed from the cuticle within 3 h, However, the conidia affiliated with the termites reared individually did not show a marked reduction. Within 3 h, almost all of the termites held in groups contained the conidia in their foreguts, but no conidia were detected in the foreguts of the termites reared individually. These data suggest that one of the functions of grooming by nestmates is the removal of foreign bodies, such as fungal conidia, from the cuticle and the mutual grooming behavior is very effective in protecting them from M. anisopliae infection.