Pollination syndrome of the African custard apple (Annona senegalensis Pers.) reveals reliance on specialized brood-site weevil pollinators in Annonaceae
Pollination syndrome of the African custard apple (Annona senegalensis Pers.) reveals reliance on specialized brood-site weevil pollinators in Annonaceae
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DOI：
10.1007/s42690-023-01041-3
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发表时间：
2023-06-29
影响因子：
1.2
通讯作者：
Gnankine, Olivier
中科院分区：
文献类型：
--
作者：
Dao, Zezouma Anselme;Romba, Rahim;Gnankine, Olivier
非洲番荔枝授粉综合征;番荔枝科）进行了调查，以了解这种多用途的野生灌木的繁殖策略。花游客收集和经常调查，在上午的30朵花，30株植物，在四个网站横跨苏丹和苏丹-萨赫勒气候带的布基纳法索在开花季节，从5月至6月。共观察到9种昆虫，包括鞘翅目（金龟子科，金龟子科），膜翅目（蚁科）和双翅目（实蝇科）访问花卉。在记录的昆虫中，两种同域性象鼻虫（象鼻虫亚科、Ochyromerini、Endaeus castus Schoenherr和Endaeusfloralis马歇尔）是迄今为止数量最多的（97%的标本），并且在所有120朵取样的花上都观察到了它们。这两个物种被观察到的肉质花瓣的Annona senegalensis，他们作为基板的幼虫阶段的发展。这些观察结果与越来越多的研究相呼应，强调象鼻虫在泛热带番荔枝科授粉中的重要作用。我们的研究提供了第一个证据之间的番荔枝科物种和其专门的象鼻虫传粉者的育雏网站互利共生。
The pollination syndrome of the African custard apple (Annona senegalensis Pers.; Annonaceae) was investigated to gain insights into the reproductive strategy of this multipurpose wild shrub. Flower visitors were collected and frequently surveyed in the morning on 30 flowers of 30 plants per site, at four sites across the Sudanian and Sudano-Sahelian climatic zones of Burkina Faso during the flowering season, from May to June. A total of nine species of insects including Coleoptera (Curculionidae, Scarabeidae), Hymenoptera (Formicidae) and Diptera (Tephritidae) were observed visiting flowers. Among the recorded insects, two sympatric species of weevil (Curculioninae, Ochyromerini, Endaeus castus Schoenherr and Endaeusfloralis Marshall) were by far the most abundant (97% of specimens) and were observed on all the 120 flowers sampled. Both species were observed on the fleshy petals of the cantharophilous flowers of Annona senegalensis that they use as substrate for the development of larval stages. These observations echo with the ever-growing number of researches highlighting the major role of weevils in the pollination of the pantropical Annonaceae. Our study provides first evidence of brood-site mutualism between an Annonaceae species and its specialized weevils pollinators.