<i>Rahnella aquatilis</i> Isolated from <i>Aedes albopictus</i> Impairs Mosquito Reproduction Capacity
<i>Aedes albopictus</i> is one of the most important vectors of Dengue, which poses a serious threat to public health. The bacterial microbiota has an effect on the parameters of mosquitos, such as larval development and fecundity, and it has emerged as a promising field to be explored f...
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MDPI AG
2025-03-01
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| author | Ling Gu Lin Li Jinyang Sun Yongqiao Zhao Kai Wan Meichun Zhang Julin Li Meihua Zhang Guoding Zhu Jianxia Tang |
| author_facet | Ling Gu Lin Li Jinyang Sun Yongqiao Zhao Kai Wan Meichun Zhang Julin Li Meihua Zhang Guoding Zhu Jianxia Tang |
| author_sort | Ling Gu |
| collection | DOAJ |
| description | <i>Aedes albopictus</i> is one of the most important vectors of Dengue, which poses a serious threat to public health. The bacterial microbiota has an effect on the parameters of mosquitos, such as larval development and fecundity, and it has emerged as a promising field to be explored for novel environmentally friendly control strategies. <i>Rahnella</i> sp. are present in many insects, including <i>Ae. Albopictus</i>, and play a role in bacterial–insect interactions; however, the role of the bacteria in mosquito biology has not yet been characterized. In this study, we characterized the <i>Rahnella</i> isolate RAeA1 obtained from <i>Ae. albopcitus,</i> and its colonization stability in <i>Ae. albopictus</i> was investigated by generating GFP-tagged bacteria. The influences of the bacteria on larval development and mosquito reproductive capacity were evaluated by inoculating RAeA1 in axenic larvae and antibiotic-treated adult mosquitoes, respectively. The results indicated that RAeA1, which is widespread in the field population of <i>Ae. albopictus</i>, can be transmitted directly from the parental strain to the progeny and can rescue axenic larvae developing into adults with a prolonged development time to pupation. RAeA1 inoculation can impair egg production and ovary maturation, as well as reducing the synthesis of ecdysteroids and vitellogenin in <i>Ae. albopictus</i> females. Overall, our results provide a thorough study of bacterium function characterization that will facilitate the development of potential strategies in relation to the design of microbiomes for vector control. |
| format | Article |
| id | doaj-art-1d63aff4de224b71a2776c7b40a7c721 |
| institution | Kabale University |
| issn | 2075-4450 |
| language | English |
| publishDate | 2025-03-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Insects |
| spelling | doaj-art-1d63aff4de224b71a2776c7b40a7c7212025-08-20T03:43:34ZengMDPI AGInsects2075-44502025-03-0116325710.3390/insects16030257<i>Rahnella aquatilis</i> Isolated from <i>Aedes albopictus</i> Impairs Mosquito Reproduction CapacityLing Gu0Lin Li1Jinyang Sun2Yongqiao Zhao3Kai Wan4Meichun Zhang5Julin Li6Meihua Zhang7Guoding Zhu8Jianxia Tang9School of Public Health, Nanjing Medical University, Nanjing 211166, ChinaSchool of Public Health, Nanjing Medical University, Nanjing 211166, ChinaSchool of Public Health, Nanjing Medical University, Nanjing 211166, ChinaNational Health Commission Key Laboratory of Parasitic Disease Control and Prevention, Jiangsu Provincial Key Laboratory on Parasite and Vector Control Technology, Jiangsu Provincial Medical Key Laboratory, Jiangsu Institute of Parasitic Diseases, Wuxi 214064, ChinaWuxi School of Medicine, Jiangnan University, Wuxi 214122, ChinaNational Health Commission Key Laboratory of Parasitic Disease Control and Prevention, Jiangsu Provincial Key Laboratory on Parasite and Vector Control Technology, Jiangsu Provincial Medical Key Laboratory, Jiangsu Institute of Parasitic Diseases, Wuxi 214064, ChinaNational Health Commission Key Laboratory of Parasitic Disease Control and Prevention, Jiangsu Provincial Key Laboratory on Parasite and Vector Control Technology, Jiangsu Provincial Medical Key Laboratory, Jiangsu Institute of Parasitic Diseases, Wuxi 214064, ChinaNational Health Commission Key Laboratory of Parasitic Disease Control and Prevention, Jiangsu Provincial Key Laboratory on Parasite and Vector Control Technology, Jiangsu Provincial Medical Key Laboratory, Jiangsu Institute of Parasitic Diseases, Wuxi 214064, ChinaSchool of Public Health, Nanjing Medical University, Nanjing 211166, ChinaSchool of Public Health, Nanjing Medical University, Nanjing 211166, China<i>Aedes albopictus</i> is one of the most important vectors of Dengue, which poses a serious threat to public health. The bacterial microbiota has an effect on the parameters of mosquitos, such as larval development and fecundity, and it has emerged as a promising field to be explored for novel environmentally friendly control strategies. <i>Rahnella</i> sp. are present in many insects, including <i>Ae. Albopictus</i>, and play a role in bacterial–insect interactions; however, the role of the bacteria in mosquito biology has not yet been characterized. In this study, we characterized the <i>Rahnella</i> isolate RAeA1 obtained from <i>Ae. albopcitus,</i> and its colonization stability in <i>Ae. albopictus</i> was investigated by generating GFP-tagged bacteria. The influences of the bacteria on larval development and mosquito reproductive capacity were evaluated by inoculating RAeA1 in axenic larvae and antibiotic-treated adult mosquitoes, respectively. The results indicated that RAeA1, which is widespread in the field population of <i>Ae. albopictus</i>, can be transmitted directly from the parental strain to the progeny and can rescue axenic larvae developing into adults with a prolonged development time to pupation. RAeA1 inoculation can impair egg production and ovary maturation, as well as reducing the synthesis of ecdysteroids and vitellogenin in <i>Ae. albopictus</i> females. Overall, our results provide a thorough study of bacterium function characterization that will facilitate the development of potential strategies in relation to the design of microbiomes for vector control.https://www.mdpi.com/2075-4450/16/3/257<i>Aedes albopictus</i>microbiota<i>Rahnella aquatilis</i>mosquito reproduction |
| spellingShingle | Ling Gu Lin Li Jinyang Sun Yongqiao Zhao Kai Wan Meichun Zhang Julin Li Meihua Zhang Guoding Zhu Jianxia Tang <i>Rahnella aquatilis</i> Isolated from <i>Aedes albopictus</i> Impairs Mosquito Reproduction Capacity Insects <i>Aedes albopictus</i> microbiota <i>Rahnella aquatilis</i> mosquito reproduction |
| title | <i>Rahnella aquatilis</i> Isolated from <i>Aedes albopictus</i> Impairs Mosquito Reproduction Capacity |
| title_full | <i>Rahnella aquatilis</i> Isolated from <i>Aedes albopictus</i> Impairs Mosquito Reproduction Capacity |
| title_fullStr | <i>Rahnella aquatilis</i> Isolated from <i>Aedes albopictus</i> Impairs Mosquito Reproduction Capacity |
| title_full_unstemmed | <i>Rahnella aquatilis</i> Isolated from <i>Aedes albopictus</i> Impairs Mosquito Reproduction Capacity |
| title_short | <i>Rahnella aquatilis</i> Isolated from <i>Aedes albopictus</i> Impairs Mosquito Reproduction Capacity |
| title_sort | i rahnella aquatilis i isolated from i aedes albopictus i impairs mosquito reproduction capacity |
| topic | <i>Aedes albopictus</i> microbiota <i>Rahnella aquatilis</i> mosquito reproduction |
| url | https://www.mdpi.com/2075-4450/16/3/257 |
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