绦虫科 Escherbothriidae（绦虫纲：Rhinebothriidea）的系统发育揭示了与鳐鱼宿主的意外关联模式

IF 1.8 2区生物学 Q3 EVOLUTIONARY BIOLOGY

Invertebrate Systematics Pub Date : 2024-04-08 DOI:10.1071/is23056

V. M. Bueno, B. Trevisan, J. N. Caira

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引用次数: 0

摘要

最近，犀齿绦虫科（Escherbothriidae）的成员增加了伊万诺夫绦虫属（Ivanovcestus），该属的物种寄生于假鳞鳐。Ivanovcestus和Semiorbiseptum--一个尚未被归入Rhinebothriidea目一个科的属--在形态和宿主关系上的相似性促使我们探索Semiorbiseptum也可能属于Escherbothriidae的可能性。与同样寄生于假鳞鳐的 Scalithrium ivanovae、Scalithrium kirchneri 和 Rhinebothrium scobinae 在形态上的相似性，使我们对这些物种的属种定位产生了疑问。此外，从鳐科鱼类 Sympterygia brevicaudata 采集到的新资料显示，有两个新物种在形态上与 Ivanovcestus 的物种相似。结合形态学和分子数据，我们评估了新发现物种的属种定位，并完善了我们对 Escherbothriidae 科成员的认识。对 7 个犀牛科物种的 14 个标本重新生成了 28S rDNA 基因 D1-D3 区域的序列数据，并与已发表的可比数据相结合，以代表犀牛科的所有 6 个科。最大似然法分析得出的系统发生树有力地支持了将半齿栉水母属（Semiorbiseptum）归入犀齿栉水母科（Escherbothriidae）。我们的研究还表明，以前归属于 Scalithrium 和 Rhinebothrium 的鳐寄主物种也是 Semiorbiseptum 的成员，而 Ivanovcestus 是 Semiorbiseptum 的小异名。6 个物种被转入 Semiorbiseptum，使该属的物种总数达到 10 个。对 Semiorbiseptum 的诊断进行了修改，以适应新增的种。描述了该科以前的单型模式属 Escherbothrium 中的第二个种。对 Escherbothriidae 的诊断进行了修正，以纳入新种和转移种。这项研究强调了整合形态学和分子数据对解决绦虫系统学问题的重要性。我们相信，我们的研究结果为今后研究 Rhinebothriidea 目及更多种类绦虫的进化史和宿主关联奠定了坚实的基础。ZooBank: urn:lsid:zoobank.org:pub:8052AFCA-5FBD-4430-95F4-0E5E368DEA3D

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Phylogeny of the cestode family Escherbothriidae (Cestoda: Rhinebothriidea) reveals unexpected patterns of association with skate hosts

The rhinebothriidean tapeworm family Escherbothriidae has recently been expanded to include the genus Ivanovcestus, species of which parasitise arhynchobatid skates. Similarities in morphology and host associations between Ivanovcestus and Semiorbiseptum – a genus yet to be assigned to one of the families in the order Rhinebothriidea – led us to explore the possibility that Semiorbiseptum might also belong in the Escherbothriidae. Morphological similarities with Scalithrium ivanovae, Scalithrium kirchneri and Rhinebothrium scobinae, all of which also parasitise arhynchobatid skates, raised questions regarding the generic placements of these species. In addition, new collections from the skate Sympterygia brevicaudata revealed two new species that morphologically resemble species of Ivanovcestus. A combination of morphological and molecular data were used to assess the generic placement of the newly discovered species and refine our understanding of the membership of the family Escherbothriidae. Sequence data for the D1–D3 region of the 28S rDNA gene were generated de novo for 14 specimens of 7 rhinebothriidean species and combined with comparable published data to represent all 6 families in the Rhinebothriidea in the analysis. The phylogenetic tree resulting from maximum likelihood analysis strongly supports the inclusion of the genus Semiorbiseptum in the family Escherbothriidae. Our work also suggests that the skate-hosted species previously assigned to Scalithrium and Rhinebothrium are also members of Semiorbiseptum and that Ivanovcestus is a junior synonym of Semiorbiseptum. Six species are transferred to Semiorbiseptum, bringing the total number of species in the genus to ten. The diagnosis of Semiorbiseptum is amended to accommodate the additional species. A second species in the previously monotypic type genus of the family, Escherbothrium, is described. The diagnosis of the Escherbothriidae is amended to include the new and transferred species. This study underscores the importance of integrating morphological and molecular data in bringing resolution to cestode systematics. We believe our findings provide a robust foundation for future research into the evolutionary history and host associations of cestodes within the order Rhinebothriidea and beyond. These also highlight the importance of expanding our understanding of skate-hosted cestodes.

ZooBank: urn:lsid:zoobank.org:pub:8052AFCA-5FBD-4430-95F4-0E5E368DEA3D

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来源期刊

Invertebrate Systematics 生物-动物学

CiteScore

4.30

自引率

9.10%

发文量

审稿时长

>12 weeks

期刊介绍： Invertebrate Systematics (formerly known as Invertebrate Taxonomy) is an international journal publishing original and significant contributions on the systematics, phylogeny and biogeography of all invertebrate taxa. Articles in the journal provide comprehensive treatments of clearly defined taxonomic groups, often emphasising their biodiversity patterns and/or biological aspects. The journal also includes contributions on the systematics of selected species that are of particular conservation, economic, medical or veterinary importance. Invertebrate Systematics is a vital resource globally for scientists, students, conservation biologists, environmental consultants and government policy advisors who are interested in terrestrial, freshwater and marine systems. Invertebrate Systematics is published with the endorsement of the Commonwealth Scientific and Industrial Research Organisation (CSIRO) and the Australian Academy of Science.