次级共生菌Arsenophonus对瓜蚜生长发育及繁殖能力的影响

doi:10.16409/j.cnki.2095-039x.2024.07.013

摘要/Abstract

摘要： 海南是我国重要的冬季瓜菜生产基地，蚜虫是为害黄瓜等多种作物的主要害虫。共生菌在昆虫宿主体内广泛存在，它们在宿主的生长发育、抵御天敌等诸多生命活动中发挥重要作用。本研究首先测定了海南地区黄瓜上瓜蚜Aphis gossypii内共生菌的组成，并采用脱除共生菌的方式探究优势共生菌Arsenophonus对瓜蚜存活率、生长发育以及生殖能力的影响。结果显示，Arsenophonus广泛分布于海南瓜蚜中，是当地瓜蚜体内的优势共生菌，脱除共生菌Arsenophonus后，瓜蚜若蚜发育减缓，历期显著延长。成蚜产蚜历期增加，其净增殖率、内禀增长率均显著提高。可见，共生菌Arsenophonus的存在一定程度上降低了瓜蚜适合度。研究结果明确了共生菌在瓜蚜生长发育中的作用，为利用共生菌开展热区蚜虫绿色防控提供参考。

关键词: 热区蚜虫, 内共生菌Arsenophonus, 生命表, 生长发育, 适合度

Abstract: Hainan is an important production base for winter melons and vegetables in China, and aphids are the primary pests that pose a threat to various crops, including cucumbers. This study determined the composition of symbiotic bacteria in cucumber aphids in Hainan, and explored the effects of the primary symbiont Arsenophonus on the survival rate, growth and development, and reproductive ability of Aphis gossypii by removing symbiotic bacteria. The results showed that the symbiotic bacterium Arsenophonus is widely distributed in melon aphids and is the primary secondary symbionts. After removing the secondary symbiont Arsenophonus, the development of aphids slowed down and their duration significantly prolonged. The duration of adult aphid production increased, both the net growth rate and intrinsic growth rate showed significant increases. These findings indicated that the presence of Arsenophonus reduced the fitness of melon aphids. These results contribute to our understanding of the role of secondary symbionts in aphid growth and development, providing guidance for utilizing symbiotic bacteria in an environmentally-friendly manner to prevention and control of aphids in tropical regions.

Key words: aphids in tropical region, endosymbiotic bacteria Arsenophonus, life table, growth and development, fitness

中图分类号:

S476.1

杨戬, 蔡笃程, 李金花. 次级共生菌Arsenophonus对瓜蚜生长发育及繁殖能力的影响[J]. 中国生物防治学报, 2024, 40(6): 1285-1292.

YANG Jian, CAI Ducheng, LI Jinhua. The Effect of Secondary Symbiont Arsenophonus on the Growth, Development, and Reproductive Ability of Aphis gossypii[J]. Chinese Journal of Biological Control, 2024, 40(6): 1285-1292.

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