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首页> 外文期刊>Journal of Parasitology >MOLECULAR PHYLOGENY OF CORYNOSOMA LÜHE, 1904 (ACANTHOCEPHALA), BASED ON 5.8S AND INTERNAL TRANSCRIBED SPACER SEQUENCES
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MOLECULAR PHYLOGENY OF CORYNOSOMA LÜHE, 1904 (ACANTHOCEPHALA), BASED ON 5.8S AND INTERNAL TRANSCRIBED SPACER SEQUENCES

机译：基于5.8S和内部翻译的间隔序列，1904年鹿角珊瑚的分子系统发育（棘皮动物）

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摘要

Species of Corynosoma (Acanthocephala) are distributed worldwide as parasites of marine mammals and sea birds. Species diagnosis is based on morphological characters, including the size and number of hooks in the proboscis and the number of spines in the dorsal and ventral regions of the body. We inferred the phylogenetic relationships of 10 nominal species of Corynosoma through analysis of internal transcribed spacers (ITS-1, ITS-2) and 5.8S ribosomal RNA sequences. Nucleotide distances between species of Corynosoma ranged from 0.4 to 11% for ITS sequences. Maximum parsimony and likelihood analyses indicated that species of Corynosoma that inhabit hosts in the marine environment form a monophyletic assemblage, but yielded conflicting hypotheses for the relationship of Corynosoma cetaceum to other members of the genus. However, parsimony and likelihood analyses were consistent for many Corynosoma sister species relationships of (e.g., C. australe plus C. bullosum, C. validum plus C. villosum, C. caspicum plus C. magdaleni, and C. enhydri plus C. strumosum). This phylogenetic framework was used to evaluate taxonomic controversies concerning C. cetaceum and C. caspicum.
机译：Corynosoma（Acanthocephala）物种作为海洋哺乳动物和海鸟的寄生虫在世界范围内分布。物种诊断基于形态特征，包括长鼻钩的大小和数量以及人体背侧和腹侧区域的棘突数量。我们通过分析内部转录间隔区（ITS-1，ITS-2）和5.8S核糖体RNA序列，推断了10个标称种类的棒状突触系统发育关系。对于ITS序列，棒状突触菌种之间的核苷酸距离为0.4至11％。最大简约性和似然性分析表明，居住在海洋环境中的寄主珊瑚属物种形成了单系组合，但对于鲸蜡菌与其他属的关系提出了相互矛盾的假设。但是，简约性和似然性分析对于许多棒状藻类姐妹物种之间的关系是一致的（例如，C。australe + C. Bullosum，C.validum + C. villosum，C。caspicum + C. magdaleni和C. enhydri + C. strumosum ）。该系统发育框架用于评估有关鲸皮梭菌和卡斯卡皮菌的分类学争议。

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  • 来源
    《Journal of Parasitology》 |2005年第2期|p.00000345-00000352|共8页
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    Martín García-Varela Francisco J. Aznar* Gerardo Pérez-Ponce de León† Daniel Piñero‡ and Juan P. Laclette;

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    Departamento de Inmunología, Instituto de Investigaciones Biomédicas, UNAM, A.P. 70228, 04510 México D.F., México. laclette@servidor.unam.mx*Departamento de Biología Animal, Instituto Cavanilles de Biodiversidad y Biologia Evolutiva, Universitat de Valencia, Burjasot, Valencia, Spain†Departamento de Zoología, Instituto de Biología, UNAM, A.P. 70228, 04510 México D.F., México‡Departamento de Ecología Evolutiva, Instituto de Ecología, UNAM, A.P. 70228, 04510 México D.F., México;

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