| 摘要: |
| 借助聚类分析和近祖演化推测（支序分类方法）对纤毛门原生动物中一高级类群──游仆虫科内各属间系统关系及科内地位予以分析探讨。结果建议：所涉各成员可细分为7个亚群，按演化顺序依次为Gastrocirrhus；Swedmarkia-Discocephalus; Uronychia;Dio-phrys；Euplotidium-Certesia; Cytharoides-Euplotes；Euplotaspis-Aspidisca.结合其形态学和个体发生学资料，建议将前2亚群置入Gastrocirrhidae科，其余归入Euplotidae科中。 |
| 关键词: 原生动物 纤毛门 游仆虫科 系统发生 γ-分类学 |
| DOI： |
| 分类号: |
| 基金项目:国家自然科学基金资助项目，39370091号 |
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| PRELIMINARY STUDIES ON THE PHYLOGENETIC RELATIONSHIP OF GENERA WITHIN THE FAMILY EUPLOTIDAE (CILIOPHORA,HYPOTRICHIDA) |
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Song Weibo
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College of Fisheries, Ocean University of Qingdao, Qingdao 266003
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| Abstract: |
| Genera belonging to the family Euplotidae (Curds et al., 1983) are recognized by the following common characters: right marginal cirri absent, ciliatures highly developed or differentiated, all the cirral anlagen occur de novo, oral primordium formed within a subcortical pouch and most members with special silverline system. Though several revisions had been made during last decades and a lot of morphotypes are well studied, the phylogeny and evolution within these organisms remains unclear up to date and need further, reasonable comparisons and investigations.
Using data obtained from morphological examination (protargol or Chatton Lwoff staining method) in interphase and from the binary fission, this paper presents a tentative scheme of the systematic arrangements among the 11 genera dealt with in this study. The possible phylogenetic relationships are discussed with the methods of fuzzy cluster and cladistic analysis (apomorph-plesiomorph). The results indicate that seven groups can be divided according to the deriving sequence during the phylogenetic development. The order is: Gastrocirrhus, Swedmarkia-Discocephalus, Uronychia, Diophrys, Euplotidium-Certesia, Cytharoides-Euplotes, Aspidisco-Euplotaspis.
Morphological and morphogenetical data suggest that they can be placed into two higher taxa: Gastrocirrhur, Discocephalus and Swedmarkia belonging to the family Gastrocirrhidae Fauré-Fremiet, 1961, and the rest to the family Euplotidae Ehrenberg, 1838. |
| Key words: Protozoa, Ciliophora, Euplotidae, Phylogeny, γ-Taxonomy |
