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Chinese Journal of Biological Control ›› 2024, Vol. 40 ›› Issue (6): 1285-1292.DOI: 10.16409/j.cnki.2095-039x.2024.07.013

• RESEARCH REPORTS • Previous Articles    

The Effect of Secondary Symbiont Arsenophonus on the Growth, Development, and Reproductive Ability of Aphis gossypii

YANG Jian, CAI Ducheng, LI Jinhua   

  1. School of Tropical Agriculture and Forestry/Key Laboratory of Green Prevention and Control of Tropical Plant Diseases and Pests, Ministry of Education, Hainan University, Haikou 570228, China
  • Received:2023-09-27 Published:2024-12-12

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

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