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Casal G, Silva TJ, Soares EC, Oliveira E, Santos M, Rocha S. Morphological, histopathological, ultrastructural and phylogenetic analysis of Henneguya archosargus n. sp. (Cnidaria, Myxosporea) infecting the sparid fish Archosargus probatocephalus in Brazilian waters. Microb Pathog 2023; 184:106366. [PMID: 37734487 DOI: 10.1016/j.micpath.2023.106366] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/28/2023] [Revised: 09/15/2023] [Accepted: 09/18/2023] [Indexed: 09/23/2023]
Abstract
The introduction of new fish species to the aquaculture industry is essential to halt the progressive decline of natural fish stocks. The sheepshead Archosargus probatocephalus is a commercially valuable sparid fish with potential for breeding in captivity, but with limited information regarding parasitic infections that could pose a significant threat for its sustainable production. Thus, the present study aimed to study the myxozoan diversity infecting A. probatocephalus. A novel Henneguya sp. was detected forming plasmodia in the gill lamellae of specimens inhabiting the Brazilian coast, and is characterized based on morphological, histopathological, ultrastructural, molecular, and phylogenetic data. Myxospore total length was 21.3 ± 0.8 μm, with myxospore body 10.0 ± 0.5 μm long, 6.2 ± 0.3 μm wide, and 4.8 ± 0.5 μm thick. Caudal appendages were 10.3 ± 0.5 μm long and did not present any type of coating. Two pyriform polar capsules, 3.4 ± 0.3 μm long and 1.5 ± 0.2 μm wide, each containing an isofilar polar tubule with 4-5 coils. Histopathological analyses showed large intralamellar polysporic plasmodia associated with vascular congestion of the gill filament and gill lamellae, as well as epithelial hyperplasia causing partial or total fusion of gill lamellae. Maximum likelihood and Baysesian inference SSU rDNA-based phylogenetic analyses showed the novel sequence grouped within the marine clade of Henneguya spp. that mostly parasitize fishes belonging to Eupercaria incertae sedis.
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Affiliation(s)
- Graça Casal
- 1H-OXRUN - One Health Toxicology Research Unit, University Institute of Health Sciences, CESPU, CRL, 4585-116, Gandra, Portugal; Department of Microscopy, School of Medicine and Biomedical Sciences (ICBAS), University of Porto, Porto, Portugal.
| | - Themis J Silva
- Laboratório de Aquicultura e Análise de Água - LAQUA, Universidade Federal de Alagoas - UFAL, Campus de Engenharias e Ciências Agrárias - CECA, Rio Largo, AL, Brazil
| | - Emerson C Soares
- Laboratório de Aquicultura e Análise de Água - LAQUA, Universidade Federal de Alagoas - UFAL, Campus de Engenharias e Ciências Agrárias - CECA, Rio Largo, AL, Brazil
| | - Elsa Oliveira
- Department of Microscopy, School of Medicine and Biomedical Sciences (ICBAS), University of Porto, Porto, Portugal
| | - Marta Santos
- Department of Microscopy, School of Medicine and Biomedical Sciences (ICBAS), University of Porto, Porto, Portugal
| | - Sónia Rocha
- Department of Microscopy, School of Medicine and Biomedical Sciences (ICBAS), University of Porto, Porto, Portugal; i3S - Instituto de Investigação e Inovação em Saúde, Universidade do Porto, Porto, Portugal.
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Emeish WFA, Fawaz MM, Hussein NM, Al-Amgad Z, Abd-ElHafeez HH, Rutland CS, Bakry KA. Characterizing Two New Henneguya Species in the Respiratory Organs of African Sharptooth Catfish. MICROSCOPY AND MICROANALYSIS : THE OFFICIAL JOURNAL OF MICROSCOPY SOCIETY OF AMERICA, MICROBEAM ANALYSIS SOCIETY, MICROSCOPICAL SOCIETY OF CANADA 2023; 29:1774-1790. [PMID: 37648416 DOI: 10.1093/micmic/ozad091] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/23/2023] [Revised: 07/16/2023] [Accepted: 08/06/2023] [Indexed: 09/01/2023]
Abstract
Henneguya species are myxozoans, a suborder of Cnidaria, which can affect the gills and extrarespiratory organs of the African sharptooth catfish, Clarias gariepinus. This research describes natural infection-induced histological alterations caused by the Henneguya species present. The Henneguya species were also identified molecularly using DNA sequenced from infected tissue cysts, and phylogenetically analyzed. Clinical investigations revealed cyst-like nodules on the fish gill filaments and extrarespiratory organs. Within a milky fluid inside the cysts were several Henneguya-like spores. Henneguya sp. infested 27.5% of the fish, with the highest prevalence in the gills compared to the extrarespiratory organs. The Henneguya species parasitized the gill and the dendritic tissues, resulting in histopathological characteristics. The plasmodia's developmental stages resulted in destructive damage which manifested as marked necrosis, which was replaced by a focal aggregation of inflammatory cells. Amplification of the 18S ribosomal DNA from the fish parasites was followed by sequencing, which confirmed their identities as new species Henneguya qenabranchiae n. sp. and Henneguya qenasuprabranchiae n. sp. with 99.53 and 99.64% identities, respectively, to Henneguya sp. 1 HS-2015. The two C. gariepinus myxozoans shared some characteristics based on morphologic and phylogenetic analysis as previously published, where it was proposed that they were a sister lineage to Henneguya species in Egypt, and it is now proposed that they are new species.
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Affiliation(s)
- Walaa F A Emeish
- Fish Diseases and Management, Department of Fish Diseases, Faculty of Veterinary Medicine, South Valley University, Qena 83523, Egypt
| | - Marwa M Fawaz
- Department of Parasitology, Faculty of Veterinary Medicine, South Valley University, Qena 83523, Egypt
| | - Nermean M Hussein
- Department of Zoology, Faculty of Science, South Valley University, Qena 83523, Egypt
| | - Zeinab Al-Amgad
- General Authority for Veterinary Services, Qena Veterinary Directorate, Qena 83511, Egypt
| | - Hanan H Abd-ElHafeez
- Department of Cell and Tissues, Faculty of Veterinary Medicine, Assiut University, Assiut 71526, Egypt
| | - Catrin Sian Rutland
- School of Veterinary Medicine and Science, University of Nottingham, Nottingham, UK
| | - Karima A Bakry
- Fish Diseases and Management, Department of Fish Diseases, Faculty of Veterinary Medicine, South Valley University, Qena 83523, Egypt
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Rangel LF, Santos MJ, Rocha S. Synopsis of the species of Henneguya Thélohan, 1892 (Cnidaria: Myxosporea: Myxobolidae) described since 2012. Syst Parasitol 2023; 100:291-305. [PMID: 37020081 DOI: 10.1007/s11230-023-10088-2] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/09/2023] [Accepted: 03/20/2023] [Indexed: 04/07/2023]
Abstract
The genus Henneguya Thélohan, 1892 (Cnidaria: Myxosporea: Myxobolidae) encompasses a large number of species that mostly infect freshwater fish belonging to 71 families of Actinopterygii. A synopsis of Henneguya species described between 2012 and 2022 is herein presented. It includes 57 species described during the last decade, and one species missing from the previous synopses, adding to a total of 254 species that have been formally described within this genus. Biological characters and myxospore morphometry are presented for each species record.
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Affiliation(s)
- Luis F Rangel
- Interdisciplinary Centre of Marine and Environmental Research (CIIMAR/CIMAR), University of Porto, Matosinhos, Portugal.
- CIIMAR, Biology Department, Faculty of Sciences, University of Porto, Porto, Portugal.
| | - Maria J Santos
- Interdisciplinary Centre of Marine and Environmental Research (CIIMAR/CIMAR), University of Porto, Matosinhos, Portugal
- CIIMAR, Biology Department, Faculty of Sciences, University of Porto, Porto, Portugal
| | - Sónia Rocha
- Instituto de Investigação e Inovação em Saúde (i3S), University of Porto, Porto, Portugal
- ICBAS - School of Medicine and Biomedical Sciences, University of Porto, Porto, Portugal
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Screening and identification of lactic acid bacteria with antimicrobial abilities for aquaculture pathogens in vitro. Arch Microbiol 2022; 204:689. [DOI: 10.1007/s00203-022-03285-y] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/14/2022] [Revised: 10/01/2022] [Accepted: 10/10/2022] [Indexed: 11/06/2022]
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Li YC, Inoue K, Zhang JY, Sato H. Descriptions of Three New Species and New Host or Distribution Records of Five Species of the Genus Kudoa (Myxozoa: Myxosporea: Multivalvulida) in Commercial Fishes Collected from South China Sea. Acta Parasitol 2022; 67:976-996. [PMID: 35429305 DOI: 10.1007/s11686-022-00545-1] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/24/2021] [Accepted: 03/17/2022] [Indexed: 12/20/2022]
Abstract
PURPOSE Myxosporeans of the genera Kudoa and Unicapsula (Cnidaria: Myxozoa: Myxosporea: Multivalvulida) may be causative agents of diseases that substantially lower the commercial value of certain marine fishes; thus, species identification is important to effectively manage outbreaks and control infections. METHODS AND RESULTS Our investigations of commercial fishes in the families Leiognathidae (three species), Ambassidae (one), Carangidae (five) and Gerreidae (one) in the South China Sea revealed new host records for Kudoa lutjanus (Ambassis martanus, and Gerres limbattus), Kudoa trachuri (Decapterus maruadsi, and Decapterus macrosoma), Kudoa uncinata (Photopectoralis bindus), and Kudoa longichorda (D. macrosoma) and new geographical distribution records for Kudoa javanensis (Alepes djedaba), K. trachuri, and K. longichorda. Moreover, three new Kudoa spp. were described based on detected specimens forming pseudocysts in trunk muscle myofibres. These included Kudoa corniculata n. sp. from Eubleekeria jonesi, and Leiognathus equulus; Kudoa hirsuta n. sp. from Trachurus japonicas, D. maruadsi, and D. macrosoma; and Kudoa parvibulvosa n. sp. from Megalaspis cordyla. To identify these species, their myxospores were morphologically and molecularly characterised based on the small and large subunits of their ribosomal RNA genes. CONCLUSIONS In this study, we demonstrated morphometric variations in the myxospores of various species and an atypical K. uncinata morphotype with unequal polar capsules. Hence, taxonomic identification of myxosporeans require molecular characterisation.
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Affiliation(s)
- Ying-Chun Li
- Faculty of Agricultural Science, Guangdong Ocean University, Mazhang, Zhanjiang, 524088, Guangdong Province, China
| | - Ken Inoue
- Laboratory of Parasitology, Joint Graduate School of Veterinary Medicine, Yamaguchi University, 1677-1 Yoshida, Yamaguchi, 753-8515, Japan
| | - Jin-Yong Zhang
- Laboratory of Aquatic Parasitology, School of Marine Science and Engineering, Qingdao Agricultural University, Qingdao, 266237, Shandong Province, China
- State Key Laboratory of Freshwater Ecology and Biotechnology, and Key Laboratory of Aquaculture Disease Control, Institute of Hydrobiology, Chinese Academy of Sciences, Wuhan, 430072, Hubei Province, China
| | - Hiroshi Sato
- Laboratory of Parasitology, Joint Graduate School of Veterinary Medicine, Yamaguchi University, 1677-1 Yoshida, Yamaguchi, 753-8515, Japan.
- Division of Pathogenic Microorganisms, Research Center for Thermotolerant Microbial Resources, Yamaguchi University, 1677-1 Yoshida, Yamaguchi, 753-8515, Japan.
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Emeish WFA, Fawaz MM, Al-Amgad Z, Hussein NM. Henneguya species infecting the gastrointestinal tract of Clarias gariepinus from the Nile River. DISEASES OF AQUATIC ORGANISMS 2022; 148:43-56. [PMID: 35200158 DOI: 10.3354/dao03649] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/14/2023]
Abstract
As part of a study on parasitic infection in the African sharptooth catfish Clarias gariepinus, we found cysts of varying sizes in the stomach and intestine that contained myxospores with morphological features resembling those of the genus Henneguya. The present investigation was carried out with data on spore morphology and histopathology. Additionally, the myxozoan was identified using a molecular-based approach with 18S small subunit rDNA sequences. Based on the morphological characterization and tissue specificity of Myxozoa, 2 species of Henneguya were identified in the catfish stomach and intestine. Several histopathological changes were observed in the intestine which may affect fish performance and survival. The phylogenetic position of nucleotide sequences of the Henneguya species identified here were clustered with other fish-infecting Henneguya species. These sequences were deposited in GenBank. It appears that they potentially represent 2 species, denominated Henneguya sp. 1 and Henneguya sp. 2 according to the samples originating from the stomach and intestine, respectively. Although future investigations are needed for detailed morphological and molecular descriptions, this study documents the likely occurrence of infection with Henneguya noted for the first time, to our knowledge, in the digestive system of C. gariepinus in Egypt.
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Affiliation(s)
- Walaa F A Emeish
- Fish Diseases and Management, Department of Fish Diseases, Faculty of Veterinary Medicine, South Valley University, Qena, Egypt
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Mathews PD, Mertins O, Espinoza LL, Milanin T, Alama-Bermejo G, Audebert F, Morandini AC. Taxonomy and 18S rDNA-based phylogeny of Henneguya multiradiatus n. sp. (Cnidaria: Myxobolidae) a parasite of Brochis multiradiatus from Peruvian Amazon. Microb Pathog 2020; 147:104372. [PMID: 32652114 DOI: 10.1016/j.micpath.2020.104372] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/26/2020] [Revised: 06/30/2020] [Accepted: 07/01/2020] [Indexed: 01/04/2023]
Abstract
A new myxozoan species belonging to the genus Henneguya was isolated from the serous membrane of the visceral cavity of the hognosed catfish Brochis multiradiatus from Peruvian Amazon. Whitish plasmodia, macroscopically visible, were found in four of the thirty examined fishes. Mature myxospores were ellipsoidal in shape in frontal view and had a total length of 44.5 ± 0.6 μm (43.9-45.1), spore body measured 18.7 ± 0.9 μm (16.8-19.6) in length, 7.1 ± 0.2 μm (6.6-7.4) in width and 5.5 ± 0.3 μm (4.9-5.6) in thickness. The two polar capsules were elongated and equal in size, measuring 9.1 ± 0.1 μm (8.8-9.4) in length and 1.7 ± 0.1 μm (1.6-1.8) in width, occupying half of the myxospore body. Polar tubules coiled in 10-11 turns perpendicular to the long axis of the polar capsule. The caudal appendage was not bifurcated and measured 25.8 ± 0.6 μm (24.7-26.5) in length. The sequencing of the 18S rDNA gene resulted in 1400 bp and this sequence did not match any of the myxozoans available in GenBank. Phylogenetic analysis placed the new species in a well-supported subclade of Henneguya spp. infecting callichthyid fishes, with Henneguya loretoensis being the closest species. This study is the first description of a myxozoan species, Henneguya multiradiatus n. sp. from a fish of the genus Brochis.
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Affiliation(s)
- Patrick D Mathews
- Department of Zoology, Institute of Biosciences, University of São Paulo, 05508-090, São Paulo, Brazil; Unité de Biologie des Organismes et Écosystèmes Aquatiques, Museum National de d'Histoire Naturelle, Sorbonne Université, CNRS, IRD, UCA, CP 26, 75005, Paris, France.
| | - Omar Mertins
- Department of Biophysics, Paulista Medical Scholl, Federal University of São Paulo, 04023-062, São Paulo, Brazil
| | - Luis L Espinoza
- Laboratory of Biology and Molecular Genetics, Faculty of Veterinary Medicine, National University of San Marcos, 2800, San Borja, Lima, Peru
| | - Tiago Milanin
- Department of Basic Sciences, Faculty of Animal Science and Food Technology, University of São Paulo, 13635-900, São Paulo, Brazil
| | - Gema Alama-Bermejo
- Institute of Parasitology, Biology Centre of the Czech Academy of Sciences, 37005, České Budějovice, Czech Republic
| | - Fabienne Audebert
- Unité de Biologie des Organismes et Écosystèmes Aquatiques, Museum National de d'Histoire Naturelle, Sorbonne Université, CNRS, IRD, UCA, CP 26, 75005, Paris, France
| | - André C Morandini
- Department of Zoology, Institute of Biosciences, University of São Paulo, 05508-090, São Paulo, Brazil; Marine Biology Center, University of São Paulo, 11612-109, São Sebastião, Brazil
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