Department of Parasitology, Faculty of Science, Charles University, Prague, Czech Republic.
Institute of Parasitology, Biology Centre, Czech Academy of Sciences, Ceske Budejovice (Budweis), Czech Republic.
Folia Parasitol (Praha). 2021 Jul 19;68:2021.019. doi: 10.14411/fp.2021.019.
Tsetse flies are well-known vectors of trypanosomes pathogenic for humans and livestock. For these strictly blood-feeding viviparous flies, the host blood should be the only source of nutrients and liquids, as well as any exogenous microorganisms colonising their intestine. Here we describe the unexpected finding of several monoxenous trypanosomatids in their gut. In a total of 564 individually examined Glossina (Austenia) tabaniformis (Westwood) (436 specimens) and Glossina (Nemorhina) fuscipes fuscipes (Newstead) (128 specimens) captured in the Dzanga-Sangha Protected Areas, Central African Republic, 24 (4.3%) individuals were infected with monoxenous trypanosomatids belonging to the genera Crithidia Léger, 1902; Kentomonas Votýpka, Yurchenko, Kostygov et Lukeš, 2014; Novymonas Kostygov et Yurchenko, 2020; Obscuromonas Votýpka et Lukeš, 2021; and Wallacemonas Kostygov et Yurchenko, 2014. Moreover, additional 20 (3.5%) inspected tsetse flies harboured free-living bodonids affiliated with the genera Dimastigella Sandon, 1928; Neobodo Vickerman, 2004; Parabodo Skuja, 1939; and Rhynchomonas Klebs, 1892. In the context of the recently described feeding behaviour of these dipterans, we propose that they become infected while taking sugar meals and water, providing indirect evidence that blood is not their only source of food and liquids.
采采蝇是已知的人体和家畜寄生锥虫的重要媒介。对于这些严格的吸血胎生蝇来说，宿主血液应该是其唯一的营养和液体来源，以及任何寄生于其肠道的外源性微生物。在这里，我们描述了在其肠道中发现几种单宿主原生动物的意外发现。在中非共和国的 Dzanga-Sangha 保护区中，总共检查了 564 只单独的 Glossina (Austenia) tabaniformis (Westwood)（436 只标本）和 Glossina (Nemorhina) fuscipes fuscipes (Newstead)（128 只标本），其中 24 只（4.3%）个体感染了单宿主原生动物，属于 Crithidia Léger，1902 属；Kentomonas Votýpka、Yurchenko、Kostygov et Lukeš，2014 年；Novymonas Kostygov et Yurchenko，2020 年；Obscuromonas Votýpka et Lukeš，2021 年；和 Wallacemonas Kostygov et Yurchenko，2014 年。此外，另外 20 只（3.5%）检查的采采蝇携带自由生活的 bodonids，隶属于 Dimastigella Sandon，1928 属；Neobodo Vickerman，2004 年；Parabodo Skuja，1939 年；和 Rhynchomonas Klebs，1892 年。在最近描述的这些双翅目昆虫的摄食行为的背景下，我们提出它们在取食糖餐和水时被感染，这提供了间接证据表明血液不是它们唯一的食物和液体来源。
