Gut bacteria symbiosis affects cuticular hydrocarbon profile and mating success in wild Ceratitis capitata (Diptera: Tephritidae) males

IF 1.1 3区 农林科学 Q3 ENTOMOLOGY
Andrea Moyano, Alfonsina Palladini, Viviana Díaz, Solana Abraham, Gisela Castillo, Antonella Giudice, Victoria Coll Araóz, Patricia Fernandez, Guido Van Nieuwenhove, Juan Rull
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Abstract

Ceratitis capitata (Diptera: Tephritidae) is a highly polyphagous species and a seriously pest with a significant economic importance, having a great number of studies focused in its management. Recently, there has been a surge of interest in the symbiotic relationship between gut bacteria and their insect hosts. In this context, the objective of this work was to evaluate the role of gut microbiota on symbiotic and aposymbiotic wild medfly adult sexual behaviour, especially on mate choice and mating success. We also evaluate latency and mating time, sperm transference, testes and ovarian sizes and female fecundity. Finally, we compared cuticular hydrocarbon profiles to explore other possible mechanisms that mediate medfly mating success. For this purpose, teneral wild medfly adults were separated into two groups, symbiotic and aposymbiotic. Aposymbiotic adults were treated with an antibiotic mixture (tetracycline plus ciprofloxacin) until sexual maturity. Results of sexual behaviour assays showed that symbiotic males were more successful in mating in comparison with aposymbiotic males, and female preference could be related with a greater sexual organ development of symbiotic females and differences in male hydrocarbon cuticular profiles. Results support the hypothesis that the presence of gut bacteria can play a beneficial role on the sexual behaviour. Knowledge about the importance of cuticular hydrocarbons acting in mating recognition was obtained. This work is the first to report the influence of gut microbiota on this component of the exoskeleton for wild medfly and might be useful for the improvement of sustainable strategies for pest management such as the sterile insect technique.

肠道细菌共生影响野生头角绦虫(双翅目:绦虫科)雄性角质层碳氢化合物分布和交配成功率
头角绦虫(双翅目:绦虫科)是一种高度多食性的害虫,是一种具有重要经济意义的严重害虫,其防治已成为研究的热点。最近,人们对肠道细菌与其宿主昆虫之间的共生关系产生了浓厚的兴趣。在此背景下,本研究的目的是评估肠道菌群对共生和非共生野生斑胸蝇成虫性行为的影响,特别是对配偶选择和交配成功的影响。我们也评估潜伏期和交配时间,精子转移,睾丸和卵巢大小和雌性繁殖力。最后,我们比较了表皮的碳氢化合物分布,以探索介导介蝇交配成功的其他可能机制。为此,将一般野生蝇成虫分为共生组和非共生组。非共生性成人用抗生素混合物(四环素加环丙沙星)治疗,直到性成熟。性行为分析结果表明,与非共生雄性相比,共生雄性的交配成功率更高,雌性的偏好可能与共生雌性性器官发育程度更高以及雄性碳氢化合物表皮结构的差异有关。结果支持了肠道细菌的存在对性行为有有益作用的假设。获得了有关角质层碳氢化合物在交配识别中的重要性的知识。本研究首次报道了肠道菌群对野生介蝇外骨骼这一组成部分的影响,可能对改进害虫管理的可持续策略(如昆虫不育技术)有帮助。
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来源期刊
Austral Entomology
Austral Entomology ENTOMOLOGY-
CiteScore
3.20
自引率
0.00%
发文量
40
期刊介绍: Austral Entomology is a scientific journal of entomology for the Southern Hemisphere. It publishes Original Articles that are peer-reviewed research papers from the study of the behaviour, biology, biosystematics, conservation biology, ecology, evolution, forensic and medical entomology, molecular biology, public health, urban entomology, physiology and the use and control of insects, arachnids and myriapods. The journal also publishes Reviews on research and theory or commentaries on current areas of research, innovation or rapid development likely to be of broad interest – these may be submitted or invited. Book Reviews will also be considered provided the works are of global significance. Manuscripts from authors in the Northern Hemisphere are encouraged provided that the research has relevance to or broad readership within the Southern Hemisphere. All submissions are peer-reviewed by at least two referees expert in the field of the submitted paper. Special issues are encouraged; please contact the Chief Editor for further information.
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