Miroliubov Aleksei, Lianguzova Anastasia, Krupenko Darya, Poliushkevich Liudmila, Novokreshchennykh Semyon, Arbuzova Natalia, Kremnev Georgii
Laboratory of Parasitic Worms and Protists, Zoological Institute RAS, Universitetskaya Embankment 1, Saint-Petersburg 199034, Russia.
Department of Invertebrate Zoology, Saint-Petersburg State University, Universitetskaya Emb., 7/9, Saint-Petersburg 199034, Russia.
Biology (Basel). 2024 Nov 24;13(12):968. doi: 10.3390/biology13120968.
is an enigmatic parasitic barnacle from the family Mycetomorphidae, known for its unclear phylogenetic position within Rhizocephala. Specimens of were collected from infected shrimps near the South Kuril Islands. Detailed morphological studies were conducted using histological techniques and scanning electron microscopy, and 18S rDNA sequences were used to resolve the phylogenetic position of within Rhizocephala. Morphological analysis revealed a complex externa structure with spermatogenic bodies and the presence of a main trunk in the interna. Some of the side branches of the interna invade the host's nerve tissue and are modified into specialized goblet-shaped organs. These invasive rootlets are morphologically similar to the goblet-shaped organs in the family Peltogastridae. Molecular analysis confirmed that the Mycetomorphidae is a sister group to the Peltogastridae. At the same time, peltogastrids were recovered as polyphyletic. Our findings contribute to the understanding of the evolution of parasitic barnacles and highlight the unique adaptations of Mycetomorphidae within the broader context of Rhizocephala.
是一种来自菌形藤壶科的神秘寄生藤壶，因其在根头目内不明确的系统发育位置而闻名。 的标本是从南千岛群岛附近受感染的虾中采集的。使用组织学技术和扫描电子显微镜进行了详细的形态学研究，并使用18S rDNA序列来确定 在根头目内的系统发育位置。形态学分析揭示了具有生精体的复杂外部结构以及内部存在主干。内部的一些侧枝侵入宿主的神经组织并被改造成特殊的杯状器官。这些侵入性小根在形态上与盾腹藤壶科的杯状器官相似。分子分析证实菌形藤壶科是盾腹藤壶科的姐妹群。同时，盾腹藤壶被发现是多系的。我们的研究结果有助于理解寄生藤壶的进化，并突出了菌形藤壶科在根头目更广泛背景下独特的适应性。
