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Phylogenetic relationships among Trichodinidae (Ciliophora : Peritricha) derived from the characteristic values of denticles
Gong, YC; Yu, YH; Feng, WS; Shen, YF; Yu, YH, Chinese Acad Sci, Inst Hydrobiol, Lab Taxon & Ecol Protozoa, Wuhan 430072, Peoples R China
2005-08-01
Source PublicationACTA PROTOZOOLOGICA
ISSN0065-1583
Volume44Issue:3Pages:237-243
AbstractThe phylogenetic relationships among trichodinids remain obscure. As an important diagnostic marker, the morphology of the denticles in the adhesive disc as well as the adoral spiral has been widely used in generic discrimination and species identification of trichodinids. We studied the characters of denticles of the ten genera of Trichodinidae and the sole genus Urceolaria of Urceolariidae by using a quantitative method. The characteristic values were used to generate Manhattan distance, on which the dendrogram was based to construct with the Unweighted Paired Group Method using the Arithmetic mean (UPGMA). The investigations show that all the genera of the family Trichodinidae were clearly separate from the outgroup Urceolaria, and within the Trichodinidae: (i) Dipartiella grouped with Trichodinella and Tripartiella and lay in the closest position to the outgroup with a low dissimilarity, suggesting Dipartiella might be the most primitive genus in the family; (ii) Hemitrichodina clustered in a single clad and lay in the farthest position to the outgroup with the highest dissimilarity, indicating that it might be the most advanced genus; and (iii) the other 6 genera, Trichodina, Paratrichodina, Semitrichodina, Vauchomia, Pallitrichodina and Trichodoxa clustered in a big clad with very low dissimilarity, showing that they are closely related to each other. We discuss the evolutionary trend of the denticle and conclude that the denticles of the adhesive disc should be an apomorphic feature of the trichodinids and their changes could reflect the evolutionary tendencies of these ciliates.; The phylogenetic relationships among trichodinids remain obscure. As an important diagnostic marker, the morphology of the denticles in the adhesive disc as well as the adoral spiral has been widely used in generic discrimination and species identification of trichodinids. We studied the characters of denticles of the ten genera of Trichodinidae and the sole genus Urceolaria of Urceolariidae by using a quantitative method. The characteristic values were used to generate Manhattan distance, on which the dendrogram was based to construct with the Unweighted Paired Group Method using the Arithmetic mean (UPGMA). The investigations show that all the genera of the family Trichodinidae were clearly separate from the outgroup Urceolaria, and within the Trichodinidae: (i) Dipartiella grouped with Trichodinella and Tripartiella and lay in the closest position to the outgroup with a low dissimilarity, suggesting Dipartiella might be the most primitive genus in the family; (ii) Hemitrichodina clustered in a single clad and lay in the farthest position to the outgroup with the highest dissimilarity, indicating that it might be the most advanced genus; and (iii) the other 6 genera, Trichodina, Paratrichodina, Semitrichodina, Vauchomia, Pallitrichodina and Trichodoxa clustered in a big clad with very low dissimilarity, showing that they are closely related to each other. We discuss the evolutionary trend of the denticle and conclude that the denticles of the adhesive disc should be an apomorphic feature of the trichodinids and their changes could reflect the evolutionary tendencies of these ciliates.
SubtypeArticle
KeywordDenticle Phylogenetic Relationships Quantitative Method Trichodinidae
DepartmentChinese Acad Sci, Inst Hydrobiol, Lab Taxon & Ecol Protozoa, Wuhan 430072, Peoples R China; Chinese Acad Sci, Grad Sch, Wuhan 430072, Peoples R China
Subject AreaMicrobiology
WOS HeadingsScience & Technology ; Life Sciences & Biomedicine
Indexed BySCI
Language英语
WOS Research AreaMicrobiology
WOS SubjectMicrobiology
WOS IDWOS:000231618900005
WOS KeywordFRESH-WATER FISHES ; SP-N CILIOPHORA ; ECTOPARASITES CILIOPHORA ; SOUTH-AFRICA ; HOST SPECIFICITY ; MARINE FISHES ; 1ST RECORD ; GILLS ; EHRENBERG ; CHINA
Citation statistics
Cited Times:10[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://ir.ihb.ac.cn/handle/152342/9174
Collection期刊论文
Corresponding AuthorYu, YH, Chinese Acad Sci, Inst Hydrobiol, Lab Taxon & Ecol Protozoa, Wuhan 430072, Peoples R China
Affiliation1.Chinese Acad Sci, Inst Hydrobiol, Lab Taxon & Ecol Protozoa, Wuhan 430072, Peoples R China
2.Chinese Acad Sci, Grad Sch, Wuhan 430072, Peoples R China
Recommended Citation
GB/T 7714
Gong, YC,Yu, YH,Feng, WS,et al. Phylogenetic relationships among Trichodinidae (Ciliophora : Peritricha) derived from the characteristic values of denticles[J]. ACTA PROTOZOOLOGICA,2005,44(3):237-243.
APA Gong, YC,Yu, YH,Feng, WS,Shen, YF,&Yu, YH, Chinese Acad Sci, Inst Hydrobiol, Lab Taxon & Ecol Protozoa, Wuhan 430072, Peoples R China.(2005).Phylogenetic relationships among Trichodinidae (Ciliophora : Peritricha) derived from the characteristic values of denticles.ACTA PROTOZOOLOGICA,44(3),237-243.
MLA Gong, YC,et al."Phylogenetic relationships among Trichodinidae (Ciliophora : Peritricha) derived from the characteristic values of denticles".ACTA PROTOZOOLOGICA 44.3(2005):237-243.
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