Two in one: A case study of two rhizocephalan species invading the nervous tissue of one host

IF 1.9 3区 生物学 Q1 ZOOLOGY
A. D. Lianguzova, L. O. Poliushkevich, E. P. Laskova, D. D. Golubinskaya, N. A. Arbuzova, A. M. Petruniak, A. M. Miroliubov
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Abstract

Certain parasites can manipulate their hosts to enhance their own fitness and transmission success. Rhizocephalan barnacles are a notable example, inducing significant changes in their crustacean host's morphology, physiology, and behaviour. Until recently, it was believed that the spider crab Scyra aff. ferox is parasitized by a single species Sacculina pilosella in the Sea of Japan. However, previous molecular studies have revealed a complex of unrelated species, Sacculina pugettiae (fam. Sacculinidae) and Parasacculina pilosella (fam. Polyascidae). These rhizocephalans can even parasitize one host specimen simultaneously. Here, we investigated the interaction of S. pugettiae and P. pilosella with the nervous system of their common host. Species were identified based on receptacle morphology, with further validation through 18S gene phylogenetic analysis. The parasites interacted differently with the host nervous system: S. pugettiae had goblet-shaped organs in the ganglion periphery, while P. pilosella lacked these structures, instead possessing numerous neuropil rootlets. In case of simultaneous infection, both goblet-shaped organs and neuropil rootlets were present. Histochemistry revealed the presence of muscular rosettes in the rootlets of both species, suggesting a similar organization of the muscular system despite phylogenetic differences. Scanning electron microscopy confirmed the presence of host cell projections enveloping the rootlets. This study provides insights into the morphological features of rhizocephalan-decapod interaction and highlights differences in their interaction with host nervous tissue between families. Our results also confirmed the loss of the goblet-shaped organs in Polyascidae.

Abstract Image

二合一:两种根头虫入侵同一寄主神经组织的案例研究
某些寄生虫可以操纵它们的宿主来提高自身的适应性和传播成功率。根头藤壶就是一个显著的例子,它能诱导甲壳类寄主的形态、生理和行为发生显著变化。直到最近,人们还认为蜘蛛蟹Scyra af . ferox是由日本海的一种Sacculina pilosella寄生的。然而,先前的分子研究已经揭示了一个不相关物种的复合体,saculina pugettiae (fam)。伞蝇科)和副伞蝇(科)。Polyascidae)。这些根头虫甚至可以同时寄生在一个宿主标本上。在这里,我们研究了pugettiae和P. pilosella与它们共同宿主的神经系统的相互作用。根据花托形态进行物种鉴定,并通过18S基因系统发育分析进一步验证。这些寄生虫与宿主神经系统的相互作用不同:pugettiae在神经节周围有杯状的器官,而P. pilosella没有这些结构,而是有许多神经节根。在同时感染的情况下,同时存在杯状器官和神经根。组织化学显示,两种植物的根部都有肌肉莲座,这表明尽管存在系统发育差异,但肌肉系统的组织结构相似。扫描电镜证实有寄主细胞突起包裹着根。本研究揭示了根头类与十足类相互作用的形态特征,并突出了它们与宿主神经组织相互作用在不同科间的差异。我们的研究结果也证实了杯状器官的缺失。
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来源期刊
Journal of Zoology
Journal of Zoology 生物-动物学
CiteScore
3.80
自引率
0.00%
发文量
90
审稿时长
2.8 months
期刊介绍: The Journal of Zoology publishes high-quality research papers that are original and are of broad interest. The Editors seek studies that are hypothesis-driven and interdisciplinary in nature. Papers on animal behaviour, ecology, physiology, anatomy, developmental biology, evolution, systematics, genetics and genomics will be considered; research that explores the interface between these disciplines is strongly encouraged. Studies dealing with geographically and/or taxonomically restricted topics should test general hypotheses, describe novel findings or have broad implications. The Journal of Zoology aims to maintain an effective but fair peer-review process that recognises research quality as a combination of the relevance, approach and execution of a research study.
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