Broad-range necrophytophagy in the flagellate Orciraptor agilis (Viridiraptoridae, Cercozoa) and the underappreciated role of scavenging among protists.

IF 2.1 4区 生物学 Q3 MICROBIOLOGY Journal of Eukaryotic Microbiology Pub Date : 2024-11-03 DOI:10.1111/jeu.13065
Jannika Moye, Sebastian Hess
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Abstract

Protists show diverse lifestyles and fulfill important ecological roles as primary producers, predators, symbionts, and parasites. The degradation of dead microbial biomass, instead, is mainly attributed to bacteria and fungi, while necrophagy by protists remains poorly recognized. Here, we assessed the food range specificity and feeding behavior of the algivorous flagellate Orciraptor agilis (Viridiraptoridae, Cercozoa) with a large-scale feeding experiment. We demonstrate that this species is a broad-range necrophage, which feeds on a variety of eukaryotic and prokaryotic algae, but fails to grow on the tested fungi. Furthermore, our microscopic observations reveal an unexpected flexibility of O. agilis in handling food items of different structures and biochemistry, demonstrating that sophisticated feeding strategies in protists do not necessarily indicate narrow food ranges.

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鞭毛虫Orciraptor agilis(Viridiraptoridae,Cercozoa)的大范围食腐作用以及原生动物中未得到充分重视的清道夫作用。
原生生物的生活方式多种多样,并扮演着初级生产者、捕食者、共生体和寄生虫等重要生态角色。相反,死亡微生物生物量的降解主要归因于细菌和真菌,而原生动物的食尸行为却鲜为人知。在这里,我们通过大规模的摄食实验评估了食藻鞭毛虫Orciraptor agilis(Viridiraptoridae,穴居动物)的食物范围特异性和摄食行为。我们证明,该物种是一种广域食肉动物,以多种真核和原核藻类为食,但不能在测试的真菌上生长。此外,我们的显微观察发现,O. agilis 在处理不同结构和生物化学性质的食物时具有意想不到的灵活性,这表明原生动物复杂的摄食策略并不一定意味着食物范围狭窄。
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来源期刊
CiteScore
4.30
自引率
4.50%
发文量
85
审稿时长
6-12 weeks
期刊介绍: The Journal of Eukaryotic Microbiology publishes original research on protists, including lower algae and fungi. Articles are published covering all aspects of these organisms, including their behavior, biochemistry, cell biology, chemotherapy, development, ecology, evolution, genetics, molecular biology, morphogenetics, parasitology, systematics, and ultrastructure.
期刊最新文献
Broad-range necrophytophagy in the flagellate Orciraptor agilis (Viridiraptoridae, Cercozoa) and the underappreciated role of scavenging among protists. The identity of Centrodinium elongatum, type species of the dinoflagellate genus Centrodinium (Dinophyceae), and a review on the synonymy of allied species. Refurbishing the marine parasitoid order Pirsoniales with newly (re)described marine and freshwater free-living predators. Transcriptomics of Diphyllatea (CRuMs) from South Pacific crater lakes confirm new cryptic clades. Issue Information
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