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Wang Z, Liu M, Ma H, Lu B, Shen Z, Mu C, Alfarraj SA, El-Serehy HA, Warren A. Redescription and molecular characterization of two Trichodina species (Ciliophora, Peritrichia, Mobilida) from freshwater fish in China. Parasitol Int 2021; 86:102470. [PMID: 34560288 DOI: 10.1016/j.parint.2021.102470] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/17/2020] [Revised: 09/17/2021] [Accepted: 09/17/2021] [Indexed: 10/20/2022]
Abstract
During an investigation of parasitic ciliates in northern China, two Trichodina species, T. acuta Lom, 1970 and T. nigra Lom, 1960, were isolated from the freshwater fish Cyprinus carpio Linnaeus, 1758. The morphology of each species was investigated based on dry silver nitrate-stained specimens. In addition, the molecular phylogeny of each was analyzed based on small subunit ribosomal DNA (SSU rDNA) sequence data. Trichodina acuta can be distinguished from its congeners by the undefined periphery of the central circle, the distinct gap between the rays and the central circle, and the distinctly sickle-shaped blades. Trichodina nigra is a cosmopolitan ciliate and is characterized by its densely linked denticles, broad, rounded spatula-shaped blades, robust central parts, and well developed rays. Phylogenetic analyses revealed that T. acuta and T. nigra nest within different clades, supporting the assertion that the GC content of SSU rDNA sequences could reflect evolutionary relationships among Trichodina species.
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Affiliation(s)
- Zhe Wang
- Institute of Evolution & Marine Biodiversity, Key Laboratory of Mariculture, Ministry of Education, Ocean University of China, Qingdao 266003, China
| | - Mingjian Liu
- Institute of Evolution & Marine Biodiversity, Key Laboratory of Mariculture, Ministry of Education, Ocean University of China, Qingdao 266003, China
| | - Hongang Ma
- Institute of Evolution & Marine Biodiversity, Key Laboratory of Mariculture, Ministry of Education, Ocean University of China, Qingdao 266003, China
| | - Borong Lu
- Institute of Evolution & Marine Biodiversity, Key Laboratory of Mariculture, Ministry of Education, Ocean University of China, Qingdao 266003, China.
| | - Zhuo Shen
- Institute of Microbial Ecology and Matter Cycle, School of Marine Sciences, Sun Yat-sen University, Zhuhai 519082, China; Southern Marine Science and Engineering Guangdong Laboratory (Zhuhai), Zhuhai 519000, China.
| | - Changjun Mu
- Weishan Special Aquaculture Base, Jining 277600, China
| | - Saleh A Alfarraj
- Zoology Department, College of Science, King Saud University, Riyadh 11451, Saudi Arabia
| | - Hamed A El-Serehy
- Zoology Department, College of Science, King Saud University, Riyadh 11451, Saudi Arabia
| | - Alan Warren
- Department of Life Sciences, Natural History Museum, London SW7 5BD, UK
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Islas-Ortega AG, Basson L, Marcotegui P, Ruiz-Campos G, de Jager GP, Rivas G, Aguilar-Aguilar R. Trichodinids (Ciliophora: Trichodinidae) on Rocky-tidal Fishes from the Baja California Peninsula, Mexico. J Parasitol 2021; 106:689-698. [PMID: 33113554 DOI: 10.1645/20-80] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022] Open
Abstract
Information regarding trichodinid ectoparasites on marine fishes of North America is relatively scarce. In this study, 5 ciliate species from the family Trichodinidae were found associated with 8 fish hosts from the rocky intertidal zone of the western coast of the Baja California Peninsula (BCP), Mexico. All of the host-parasite relationships recorded here are new. Furthermore, 3 of the trichodinid species found are recorded for the first time for Mexico. Trichodinids taxa do not show a noticeable distributional gradient along the BCP, which suggests a wide-continuous distribution of the species throughout the study area.
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Affiliation(s)
- A G Islas-Ortega
- Departamento de Biología Comparada, Facultad de Ciencias, Universidad Nacional Autónoma de México, Circuito Exterior s/n, C. P. 04510, Ciudad Universitaria, Mexico
| | - L Basson
- Department of Zoology and Entomology, University of the Free State, Bloemfontein, South Africa
| | - P Marcotegui
- Centro de Estudios Parasitológicos y Vectores (CEPAVE), Consejo Nacional de Investigaciones Científicas y Técnicas, Universidad Nacional de La Plata (CONICET UNLP), boulevard 120 s/n e/ 60 y 64, La Plata, Argentina
| | - G Ruiz-Campos
- Facultad de Ciencias, Universidad Autónoma de Baja California, Campus Ensenada, Carr. Transpeninsular No. 3917, Colonia Playitas, C.P. 22860, Ensenada, Baja California, Mexico
| | - G P de Jager
- Department of Zoology and Entomology, University of the Free State, Bloemfontein, South Africa
| | - G Rivas
- Departamento de Biología Comparada, Facultad de Ciencias, Universidad Nacional Autónoma de México, Circuito Exterior s/n, C. P. 04510, Ciudad Universitaria, Mexico
| | - R Aguilar-Aguilar
- Departamento de Biología Comparada, Facultad de Ciencias, Universidad Nacional Autónoma de México, Circuito Exterior s/n, C. P. 04510, Ciudad Universitaria, Mexico
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First record of two ectoparasitic ciliates of the genus Trichodina (Ciliophora: Trichodinidae) parasitizing gills of an invasive freshwater fish, Micropercops swinhonis, in Tibet. Parasitol Res 2018; 117:2233-2242. [PMID: 29804193 DOI: 10.1007/s00436-018-5910-y] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/10/2017] [Accepted: 05/02/2018] [Indexed: 10/16/2022]
Abstract
Although high diversity of parasitic ciliates has been reported in China, little is known about the species from high altitude areas, especially in Tibet. To investigate the species of parasitic ciliates in Tibet, a project was initiated in the Chabalang wetland in 2013. Two Trichodina species, namely, Trichodina sp. and T. reticulata Hirschmann & Partsch, 1955, were isolated from gills of an invasive fish, Micropercops swinhonis for the first time. In the present study, we provided the morphological, morphometrical, and molecular characterizations of the two species and conducted the phylogenetic analyses of mobilids based on the small subunit ribosomal RNA gene (SSU rDNA) sequences. Both morphological characters and morphometric data of the T. reticulata agreed well with previous studies. Although two partial SSU rDNA sequences were obtained in the present study, only the sequence of T. reticulata population in the present study was thought to be reliable. The other sequence may not belong to the other species. Thus, we regarded the other species isolated in the present study as Trichodina sp. to avoid the wrong or confused species identification. Morphologically, Trichodina sp. is distinguished mainly by its large body shape with a broad adhesive disk, robust and obliquely quadrilateral blades, and well-developed rays. T. reticulata is mainly characterized with the 8-12 spherical or elliptical granules in the central zone of adhesive disk. Phylogenetic analyses consistently showed the two ectoparasites clustered with freshwater species of the genus Trichodina within the order Mobilida. Our study extended the host range of T. reticulata and supplemented the molecular data. Also, results reveal that invasion of exotic fish may cause a potential threat to native fish by introducing or dispersing parasitic ciliates.
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Boscolo Papo M, Bertotto D, Quaglio F, Vascellari M, Pascoli F, Negrato E, Binato G, Radaelli G. Histopathology and stress biomarkers in the clam Venerupis philippinarum from the Venice Lagoon (Italy). FISH & SHELLFISH IMMUNOLOGY 2014; 39:42-50. [PMID: 24795081 DOI: 10.1016/j.fsi.2014.04.016] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/29/2014] [Revised: 03/09/2014] [Accepted: 04/23/2014] [Indexed: 06/03/2023]
Abstract
The aim of this study was to evaluate the histomorphology and the stress response in the bivalve Venerupis philippinarum sampled in four differently polluted sites of the Venice Lagoon (Palude del Monte, Marghera, Ca' Roman and Val di Brenta). This species is often used as bioindicator of environmental pollution since it can bioaccumulate a large variety of pollutants because of its filter feeding. Chemical analyses for heavy metals (Cd, Cu, Hg and Pb) and polycyclic aromatic hydrocarbons (PAHs) were performed on whole soft tissues of V. philippinarum. The histological evaluation of clams revealed the presence of Perkinsus sp. infection in animals from all sites, although a very high prevalence of parasites was evidenced in clams from Ca' Roman. Perkinsus sp. were systemically distributed in the mantle, in the intestine and digestive gland, in gonads and gills. The trophozoites of Perkinsus sp. were found isolated or in cluster surrounded by a heavy hemocitical response. Haemocytes always exhibited an immunopositivity to cytochrome P4501A (CYP1A), heat shock protein 70 (HSP70), 4-hydroxy-2-nonenal (HNE) and nitrotyrosine (NT) antibodies. The digestive gland of animals from Palude del Monte showed the highest malondialdehyde (MDA) concentration, whereas clams from Ca' Roman exhibited the highest quantity of metallothioneins.
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Affiliation(s)
- Michele Boscolo Papo
- Dipartimento di Biomedicina Comparata e Alimentazione, Università degli Studi di Padova, Agripolis, Viale dell'Università 16 - 35020 Legnaro (PD), Italy
| | - Daniela Bertotto
- Dipartimento di Biomedicina Comparata e Alimentazione, Università degli Studi di Padova, Agripolis, Viale dell'Università 16 - 35020 Legnaro (PD), Italy
| | - Francesco Quaglio
- Dipartimento di Biomedicina Comparata e Alimentazione, Università degli Studi di Padova, Agripolis, Viale dell'Università 16 - 35020 Legnaro (PD), Italy
| | - Marta Vascellari
- Istituto Zooprofilattico Sperimentale delle Venezie, Viale dell'Università 10 - 35020 Legnaro (PD), Italy
| | - Francesco Pascoli
- Istituto Zooprofilattico Sperimentale delle Venezie, Viale dell'Università 10 - 35020 Legnaro (PD), Italy
| | - Elena Negrato
- Dipartimento di Biomedicina Comparata e Alimentazione, Università degli Studi di Padova, Agripolis, Viale dell'Università 16 - 35020 Legnaro (PD), Italy
| | - Giovanni Binato
- Istituto Zooprofilattico Sperimentale delle Venezie, Viale dell'Università 10 - 35020 Legnaro (PD), Italy
| | - Giuseppe Radaelli
- Dipartimento di Biomedicina Comparata e Alimentazione, Università degli Studi di Padova, Agripolis, Viale dell'Università 16 - 35020 Legnaro (PD), Italy.
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Dias RJP, Fernandes NM, Sartini B, da Silva-Neto ID, D'Agosto M. Occurrence of Trichodina heterodentata (Ciliophora: Trichodinidae) infesting tadpoles of Rhinella pombali (Anura: Bufonidae) in the Neotropical area. Parasitol Int 2009; 58:471-4. [DOI: 10.1016/j.parint.2009.06.009] [Citation(s) in RCA: 14] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/12/2009] [Revised: 06/25/2009] [Accepted: 06/26/2009] [Indexed: 11/17/2022]
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