Mating harassment may boost the effectiveness of the sterile insect technique for Aedes mosquitoes

Zhang Dongjing, Maiga Hamidou, Li Yongjun, Bakhoum Mame Thierno, Wang Gang, Sun Yan, Damiens David, Mamaï Wadaka, Bimbilé Somda Nanwintoum Séverin, Wallner Thomas, Bueno-Masso Odet, Martina Claudia, Kotla Simran Singh, Yamada Hanano, Lu Deng, Tan Cheong Huat, Guo Jiatian, Feng Qingdeng, Zhang Junyan, Zhao Xufei, Paerhande Dilinuer, Pan Wenjie, Wu YU, Zheng Xiaoying, Wu Zhongdao, Xi Zhiyong, Vreysen Marc J.B., Bouyer Jérémy. 2024. Mating harassment may boost the effectiveness of the sterile insect technique for Aedes mosquitoes. Nature Communications, 15:1980, 13 p.

Url - jeu de données - Entrepôt autre : https://springernature.figshare.com/articles/dataset/Raw_data_from_lab_semi-field_and_field_trials_on_male_mating_harassment/23578995

Résumé : The sterile insect technique is based on the overflooding of a target population with released sterile males inducing sterility in the wild female population. It has proven to be effective against several insect pest species of agricultural and veterinary importance and is under development for Aedes mosquitoes. Here, we show that the release of sterile males at high sterile male to wild female ratios may also impact the target female population through mating harassment. Under laboratory conditions, male to female ratios above 50 to 1 reduce the longevity of female Aedes mosquitoes by reducing their feeding success. Under controlled conditions, blood uptake of females from an artificial host or from a mouse and biting rates on humans are also reduced. Finally, in a field trial conducted in a 1.17 ha area in China, the female biting rate is reduced by 80%, concurrent to a reduction of female mosquito density of 40% due to the swarming of males around humans attempting to mate with the female mosquitoes. This suggests that the sterile insect technique does not only suppress mosquito vector populations through the induction of sterility, but may also reduce disease transmission due to increased female mortality and lower host contact.

Mots-clés Agrovoc : lâcher d'insectes stériles, vecteur de maladie, Aedes aegypti, sex ratio, Aedes albopictus, Aedes, transmission des maladies, reproduction sexuée, infertilité mâle, longévité, contrôle de maladies, lutte anti-insecte

Mots-clés géographiques Agrovoc : Chine

Mots-clés libres : Technique de l'insecte stérile, Harcèlement sexuel, Sex ratio, Vecorial capacity, Capacité vectorielle

Classification Agris : L72 - Organismes nuisibles des animaux

Champ stratégique Cirad : CTS 4 (2019-) - Santé des plantes, des animaux et des écosystèmes

Agences de financement européennes : European Regional Development Fund

Agences de financement hors UE : International Atomic Energy Agency, National Key Research and Development Program of China

Projets sur financement : (AUT) Surge Expansion of Sterile Insect Technique (SIT) to Control Mosquito Populations that Transmit the Zika, (CHN) The Science and Technology Planning Project of Guangdong Province

Auteurs et affiliations

• Zhang Dongjing, Sun Yat-Sen University (CHN)
• Maiga Hamidou, IRSS (BFA)
• Li Yongjun, Jinan University (CHN)
• Bakhoum Mame Thierno, ISRA (SEN)
• Wang Gang, Sun Yat-Sen University (CHN)
• Sun Yan, Sun Yat-Sen University (CHN)
• Damiens David, IRD (FRA)
• Mamaï Wadaka, IAEA (AUT)
• Bimbilé Somda Nanwintoum Séverin, IAEA (AUT)
• Wallner Thomas, FAO (AUT)
• Bueno-Masso Odet, FAO (AUT)
• Martina Claudia, IAEA (AUT)
• Kotla Simran Singh, IAEA (AUT)
• Yamada Hanano, FAO (AUT)
• Lu Deng, National Environment Agency (SGP)
• Tan Cheong Huat, National Environment Agency (SGP)
• Guo Jiatian, Sun Yat-Sen University (CHN)
• Feng Qingdeng, Sun Yat-Sen University (CHN)
• Zhang Junyan, Sun Yat-Sen University (CHN)
• Zhao Xufei, Sun Yat-Sen University (CHN)
• Paerhande Dilinuer, Sun Yat-Sen University (CHN)
• Pan Wenjie, SYSU Nuclear and Insect Biotechnology Co. (CHN)
• Wu YU, Sun Yat-Sen University (CHN)
• Zheng Xiaoying, Sun Yat-Sen University (CHN)
• Wu Zhongdao, Sun Yat-Sen University (CHN)
• Xi Zhiyong, MSU (USA)
• Vreysen Marc J.B., FAO (AUT)
• Bouyer Jérémy, CIRAD-BIOS-UMR ASTRE (AUT) ORCID: 0000-0002-1913-416X - auteur correspondant

Source : Cirad-Agritrop (https://agritrop.cirad.fr/608724/)

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