TAXONOMIC STUDY ON TRICHODINIDS PARASITIC ON GILLS OF FRESHWATER FISH, &lt;I&gt;CARASSIUS AURATUS&lt;/I&gt; FROM CHONGQING, CHINA, WITH THE DESCRIPTION OF &lt;I&gt;TRICHODINA BREVICIRRA&lt;/I&gt; SP. NOV.

Tang, Fahui; Zhao, Yuanjun

doi:10.3724/sp.j.1035.2010.01009

Cited by 7 publications

(17 citation statements)

References 6 publications

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“…So far, about 400 Trichodina species have been identified from different aquatic hosts and areas in the world, especially many species have been found from fish and reported during the last 10 yr in China (Van As and Basson ; Lom and Dykova ; Song et al. ; Tang and Zhao , , ; Tang et al. , , ; Wang et al.…”

Section: Discussionmentioning

confidence: 99%

Morphological and Molecular Identification of the New Species,Trichodina pseudoheterodentatasp. n. (Ciliophora, Mobilida, Trichodinidae) from the Channel Catfish,Ictalurus punctatus, in Chongqing China

Tang

Zhang

Zhao

2016

J Eukaryotic Microbiology

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It is difficult to differentiate similar trichodinids solely based on morphological examination, thus other identification methods, such as molecular identification, are necessary for identification. One mobilid ciliate named Trichodina pseudoheterodentata sp. n. was isolated from the gills of channel catfish, Ictalurus punctatus, in Chongqing, China. In the present study, its SSU rDNA was sequenced for the first time. Based on the results from both morphological identification and SSU rDNA sequencing, the new species was identified and compared with similar species. The morphological analysis revealed that T. pseudoheterodentata is a large Trichodina species (cell diameter 73.0-82.5 μm) and possesses robust denticles with broad blades and well-developed blade connections. Characterization of its primary and secondary SSU rDNA structures indicated that T. pseudoheterodentata was distinctly different from congeneric species in H12, H15, E10_1, and V4 regions. Phylogenetic analysis revealed that the genetic distances among the new species and similar species reached interspecific levels, furthermore, the phylogenetic study also validated the identification of T. pseudoheterodentata and its placement in the genus Trichodina.

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Section: Discussionmentioning

confidence: 99%

Morphological and Molecular Identification of the New Species,Trichodina pseudoheterodentatasp. n. (Ciliophora, Mobilida, Trichodinidae) from the Channel Catfish,Ictalurus punctatus, in Chongqing China

Tang

Zhang

Zhao

2016

J Eukaryotic Microbiology

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“…The border membrane is broad in T. kazubski (Van As and Basson, 1989), which can be confirmed in the description by Tang et al (2007) for specimens collected from cyprinids in China. Additionally, this species differs from the others by presenting apophysis in the anterior blade margin and prominent apophysis of the ray (VAN AS; BASSON, 1989).…”

Section: Remarkssupporting

confidence: 55%

Trichodina colisae (Ciliophora: Trichodinidae): new parasite records for two freshwater fish species farmed in Brazil

Jerônimo

Marchiori

Pádua

et al. 2012

Rev. Bras. Parasitol. Vet.

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Family Trichodinidae comprises ciliate protozoa distributed worldwide; they are considered some of the main parasitological agents infecting cultivated fish. However, the trichodinidae parasitizing important fish species cultured in Brazil are unknown, and more taxonomic studies on this group of parasites are required. This research morphologically characterizes Trichodina colisae Asmat & Sultana, (2005) of pacu (Piaractus mesopotamicus) and patinga hybrid (P. mesopotamicus × P. brachypomus) cultivated in the central and southeast regions of the country. Fresh assemblies were made from mucus scraped from the skin, fins and gills, fixed with methanol and, subsequently, impregnated with silver nitrate and stained with Giemsa for assessment under light microscopy. This research reports not only the second occurrence of T. colisae in the world, but also its first occurrence in South America.

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“…Denticle diagrammatic drawing of Trichodina reticulata (Hirschmann and Partsch ) ( A ) Trichodina reticulata (S) (present work); ( B ) Trichodina reticulata (W) (present work); ( C ) Trichodina reticulata (redrawn from Lom ); ( D ) Trichodina reticulata (redrawn from Wellborn ); ( E ) Trichodina reticulata (redrawn from Basson et al. ); ( F ) Trichodina reticulata (redrawn from Basson and Van As ); ( G ) Trichodina reticulata (redrawn from Albaladejo and Arthur ); ( H ) Trichodina reticulata (redrawn from Dove and O'Donoghue ); ( I ) Trichodina reticulata (redrawn from Tang and Zhao ); ( J ) Trichodina reticulata (redrawn from Tang and Zhao ); ( K ) Trichodina reticulata (redrawn from Martins et al. ); ( L ) Trichodina reticulata (redrawn from Gong et al.…”

Section: Resultsmentioning

confidence: 99%

“…; Lom ; Martins et al. ; Tang and Zhao ; Wellborn ). The population of T. reticulata (S) is the largest one in body size (51.9–69.3 μm).…”

Section: Discussionmentioning

confidence: 99%

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Morphological Redescription and Molecular Identification of Trichodina reticulata Hirschmann & Partsch, 1955 (Ciliophora, Mobilida, Trichodinidae) with the Supplemental New Data of SSU rDNA and ITS‐5.8S rDNA

Wang

Zhao

et al. 2018

J Eukaryotic Microbiology

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During a survey of trichodinids in Chongqing, China, two populations of Trichodina reticulata Hirschmann & Partsch, 1955 were isolated from gills of the freshwater fishes, Carassius auratus and Ctenopharyngodon idellus, and 11 molecular samples containing small subunit (SSU) rDNA and internal transcribed spacer (ITS)-5.8S rDNA were newly sequenced. Both populations fell within the range of morphometry and corresponded well with the diagnostic morphological features of Trichodina reticulata Hirschmann & Partsch, 1955. It should be noted that one population possessed obvious central granules in the adhesive disc, while the other one did not. The detailed morphological redescription for these two populations is given in this work. Although some intraspecific differences were found, both populations were confirmed as Trichodina reticulata based on the morphological study and molecular data, including the sequence analysis of the primary and secondary structures of SSU rDNA, genetic distances and phylogenetic tree. Our study supports the assertion that central granules in the adhesive disc might be an auxiliary feature rather than a heritable character for determining taxonomic affiliations among trichodinids.

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TAXONOMIC STUDY ON TRICHODINIDS PARASITIC ON GILLS OF FRESHWATER FISH, <I>CARASSIUS AURATUS</I> FROM CHONGQING, CHINA, WITH THE DESCRIPTION OF <I>TRICHODINA BREVICIRRA</I> SP. NOV.

Cited by 7 publications

References 6 publications

Morphological and Molecular Identification of the New Species,Trichodina pseudoheterodentatasp. n. (Ciliophora, Mobilida, Trichodinidae) from the Channel Catfish,Ictalurus punctatus, in Chongqing China

Morphological and Molecular Identification of the New Species,Trichodina pseudoheterodentatasp. n. (Ciliophora, Mobilida, Trichodinidae) from the Channel Catfish,Ictalurus punctatus, in Chongqing China

Trichodina colisae (Ciliophora: Trichodinidae): new parasite records for two freshwater fish species farmed in Brazil

Morphological Redescription and Molecular Identification of Trichodina reticulata Hirschmann & Partsch, 1955 (Ciliophora, Mobilida, Trichodinidae) with the Supplemental New Data of SSU rDNA and ITS‐5.8S rDNA

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