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Bao M, Olsen KM, Levsen A, Cipriani P, Giulietti L, Storesund JE, García-Seoane E, Karlsbakk E. Characterization of Pseudoterranova ceticola (Nematoda: Anisakidae) larvae from meso/bathypelagic fishes off Macaronesia (NW Africa waters). Sci Rep 2022; 12:17695. [PMID: 36271251 PMCID: PMC9587057 DOI: 10.1038/s41598-022-22542-0] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/24/2022] [Accepted: 10/17/2022] [Indexed: 01/18/2023] Open
Abstract
The genus Pseudoterranova includes parasite species of cetaceans and pinnipeds. The third stage larva (L3) of seal-infecting species occur in second intermediate or paratenic fish hosts mainly in neritic waters. This study firstly describes a Pseudoterranova L3 from meso/bathypelagic fishes off Macaronesia. L3s were morphologically and genetically studied by light microscopy and sequencing of the mtDNA cox2 and entire ITS rDNA genes. Bayesian inferences were performed with sequences from the larvae and selected sequences from GenBank. The nematode L3s were molecularly identified as Pseudoterranova ceticola, a parasite of kogiid whales. Such larvae were collected from Bolinichthys indicus, Chauliodus danae, Eupharynx pelecanoides, Diaphus rafinesquii, D. mollis, Diretmus argenteus and Maulisia argipalla. They mainly occurred in the viscera of these fishes. Pseudoterranova ceticola L3 were small (< 12 mm) and whitish, and a prominent characteristic is a circumoral ridge extending from the ventral boring tooth which differentiate them from Pseudoterranova spp. L3 maturing in pinnipeds and Terranova sensu lato larvae that mature in poikilotherms. The shape of the tail: conical, long, pointed, ventrally curved and lacking mucron also distinguish these larvae from those of the pinniped-infecting Pseudoterranova spp. Phylogenetic analyses based on mtDNA cox2 and ITS rDNA sequences suggest that P. ceticola is closely related to Skrjabinisakis spp., and not with Pseudoterranova spp. parasitizing pinnipeds. The related species Skrjabinisakis paggiae, S. brevispiculata and S. physeteris (until recently belonging to genus Anisakis), are as P. ceticola also parasites of physeteroid cetaceans. The morphology and morphological variation of the larvae of the cetacean parasite P. ceticola is thoroughly described for the first time. These L3 can readily be morphologically distinguished from those of the pinniped-infecting Pseudoterranova spp. The parasite likely completes its life cycle in the mesopelagic and bathypelagic realm, with meso/bathypelagic fish as 2nd intermediate or paratenic hosts and kogiids as final host. Thus, Pseudoterranova from cetaceans appear to be morphologically, genetically, and ecologically differentiated to those from pinnipeds, suggesting that they are not congeneric.
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Affiliation(s)
- Miguel Bao
- grid.10917.3e0000 0004 0427 3161Institute of Marine Research (IMR), Nordnes, PO Box 1870, N-5817 Bergen, Norway
| | - Kaja M. Olsen
- grid.10917.3e0000 0004 0427 3161Institute of Marine Research (IMR), Nordnes, PO Box 1870, N-5817 Bergen, Norway
| | - Arne Levsen
- grid.10917.3e0000 0004 0427 3161Institute of Marine Research (IMR), Nordnes, PO Box 1870, N-5817 Bergen, Norway
| | - Paolo Cipriani
- grid.10917.3e0000 0004 0427 3161Institute of Marine Research (IMR), Nordnes, PO Box 1870, N-5817 Bergen, Norway ,grid.7841.aDepartment of public Health and Infectious Diseases, Section of Parasitology, Sapienza University of Rome, Rome, Italy
| | - Lucilla Giulietti
- grid.10917.3e0000 0004 0427 3161Institute of Marine Research (IMR), Nordnes, PO Box 1870, N-5817 Bergen, Norway
| | - Julia E. Storesund
- grid.10917.3e0000 0004 0427 3161Institute of Marine Research (IMR), Nordnes, PO Box 1870, N-5817 Bergen, Norway
| | - Eva García-Seoane
- grid.10917.3e0000 0004 0427 3161Institute of Marine Research (IMR), Nordnes, PO Box 1870, N-5817 Bergen, Norway
| | - Egil Karlsbakk
- grid.10917.3e0000 0004 0427 3161Institute of Marine Research (IMR), Nordnes, PO Box 1870, N-5817 Bergen, Norway ,grid.7914.b0000 0004 1936 7443Department of Biological Sciences, University of Bergen, Bergen, Norway
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Guo N, Chen HX, Zhang LP, Zhang JY, Yang LY, Li L. Infection and molecular identification of ascaridoid nematodes from the important marine food fish Japanese threadfin bream Nemipterus japonicus (Bloch) (Perciformes: Nemipteridae) in China. INFECTION GENETICS AND EVOLUTION 2020; 85:104562. [PMID: 32961362 DOI: 10.1016/j.meegid.2020.104562] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/07/2020] [Revised: 09/12/2020] [Accepted: 09/17/2020] [Indexed: 11/27/2022]
Abstract
The Japanese threadfin bream N. japonicus (Bloch) (Perciformes: Nemipteridae) is an important marine food fish in Asia. However, our present knowledge of the occurrence of its nematode parasites is still limited. In the present study, the species composition and infection rate of ascaridoid nematodes in N. japonicus from the South China Sea, were studied for the first time. Five ascaridoid species, namely Anisakis typica (L3), Hysterothylacium amoyense (L3), Hysterothylacium sp. IV-A (L3), adult of H. thalassini and Raphidascaris lophii (L3), were identified using integrative taxonomy. Hysterothylacium amoyense was the most prevalent species (prevalence 47.2%, mean intensity 14.9 ± 17.1). Hysterothylacium thalassini and R. lophii were reported in the Japanese threadfin bream for the first time. Two different genotypes of A. typica (overall prevalence of 3.4%; mean intensity 1.7 ± 0.9) were found in the South China Sea for the first time. The unique restriction polymorphism patterns of three species of Hysterothylacium are provided for rapid diagnosis. Our present results indicate that RFLP analysis of ITS region, using the restriction enzymes HhaI and RsaI, represents a simple and practical method for large-scale surveys of Hysterothylacium for seafood industry.
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Affiliation(s)
- Ning Guo
- Key Laboratory of Animal Physiology, Biochemistry and Molecular Biology of Hebei Province, College of Life Science, Hebei Normal University, 050024 Shijiazhuang, Hebei Province, PR China
| | - Hui-Xia Chen
- Key Laboratory of Animal Physiology, Biochemistry and Molecular Biology of Hebei Province, College of Life Science, Hebei Normal University, 050024 Shijiazhuang, Hebei Province, PR China
| | - Lu-Ping Zhang
- Key Laboratory of Animal Physiology, Biochemistry and Molecular Biology of Hebei Province, College of Life Science, Hebei Normal University, 050024 Shijiazhuang, Hebei Province, PR China
| | - Jia-Yue Zhang
- Key Laboratory of Animal Physiology, Biochemistry and Molecular Biology of Hebei Province, College of Life Science, Hebei Normal University, 050024 Shijiazhuang, Hebei Province, PR China
| | - Li-Yang Yang
- Key Laboratory of Animal Physiology, Biochemistry and Molecular Biology of Hebei Province, College of Life Science, Hebei Normal University, 050024 Shijiazhuang, Hebei Province, PR China
| | - Liang Li
- Key Laboratory of Animal Physiology, Biochemistry and Molecular Biology of Hebei Province, College of Life Science, Hebei Normal University, 050024 Shijiazhuang, Hebei Province, PR China.
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Roca-Geronès X, Segovia M, Godínez-González C, Fisa R, Montoliu I. Anisakis and Hysterothylacium species in Mediterranean and North-East Atlantic fishes commonly consumed in Spain: Epidemiological, molecular and morphometric discriminant analysis. Int J Food Microbiol 2020; 325:108642. [PMID: 32361053 DOI: 10.1016/j.ijfoodmicro.2020.108642] [Citation(s) in RCA: 19] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/28/2019] [Revised: 02/20/2020] [Accepted: 04/14/2020] [Indexed: 01/28/2023]
Abstract
The consumption of raw fish parasitized with larval ascaridoid nematodes of the family Anisakidae can cause anisakiasis, provoking gastrointestinal and/or allergic symptomatology. The main causative agents in the Anisakis genus are the sibling species Anisakis simplex sensu stricto (s.s.) and A. pegreffii of the A. simplex sensu lato (s.l.) complex. Larvae of A. simplex (s.l.) are frequently detected in fish commonly consumed in Spain, as are larvae of the genus Hysterothylacium of the family Raphidascarididae, associated with allergic reactions but not considered pathogenic. Reported here are the results of an epidemiological survey of ascaridoid larvae in three commonly consumed fish species in Spain, horse mackerel (Trachurus trachurus) (n = 52), blue whiting (Micromesistius poutassou) (n = 93) and anchovy (Engraulis encrasicolus) (n = 69), caught in the North-Eastern Atlantic, West Mediterranean and Adriatic Sea. The larvae found in the dissected fish were identified in the following order of abundance: A. simplex (s.l.) (n = 2003), Hysterothylacium aduncum (n = 422), H. fabri (n = 180) and A. physeteris (n = 15). Binomial regression analysis showed a correlation between A. simplex (s.l.) and Hysterothylacium larvae abundance and the host geographical location, the North-Eastern Atlantic being the area with the highest parasitation. Fish length and weight and Fulton's condition factor were correlated with A. simplex (s.l.) abundance only in horse mackerel. There was a significant presence of A. simplex (s.l.) and H. aduncum larvae in the musculature of North-Eastern Atlantic blue whiting, the most parasitized part being the anteroventral region, followed equally by the anterodorsal and central sections. The ITS rDNA of larvae of the sibling species A. simplex (s.s.) and A. pegreffii was identified by PCR-RFLP, and a binary logistic regression model was developed to study their morphometric differentiation. Anisakis simplex (s.s.) was detected in the North-Eastern Atlantic and A. pegreffii in all the areas studied. The morphometric analysis discriminated between the two species at the third and fourth larval stages (L3 and L4), the latter obtained by in vitro culture in RPMI-1640 medium. Two discriminant functions were obtained for the L3 and L4 larvae, the ventricle being a key parameter for specific differentiation in both stages, providing taxonomical criteria that could be used besides molecular identification. The present study reveals differences in the parasitation of the studied fish, including the distribution of larvae in the musculature, related to the host species and its geographical origin.
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Affiliation(s)
- Xavier Roca-Geronès
- Laboratory of Parasitology, Department of Biology, Health and Environment, Faculty of Pharmacy and Food Sciences, Av. Joan XXIII 27-31, 08028, Barcelona, Catalonia, Spain
| | - Matías Segovia
- Department of Health, Miquel Martí i Pol Institute, Generalitat de Catalunya, Verge de Montserrat 51, 08940, Cornellà de Llobregat, Catalonia, Spain
| | - Carla Godínez-González
- Laboratory of Parasitology, Department of Biology, Health and Environment, Faculty of Pharmacy and Food Sciences, Av. Joan XXIII 27-31, 08028, Barcelona, Catalonia, Spain
| | - Roser Fisa
- Laboratory of Parasitology, Department of Biology, Health and Environment, Faculty of Pharmacy and Food Sciences, Av. Joan XXIII 27-31, 08028, Barcelona, Catalonia, Spain
| | - Isabel Montoliu
- Laboratory of Parasitology, Department of Biology, Health and Environment, Faculty of Pharmacy and Food Sciences, Av. Joan XXIII 27-31, 08028, Barcelona, Catalonia, Spain.
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Sonko P, Chih-Cheng Chen S, Chou CM, Huang YC, Hsu SL, Barčák D, Oros M, Fan CK. Multidisciplinary approach in study of the zoonotic Anisakis larval infection in the blue mackerel (Scomber australasicus) and the largehead hairtail (Trichiurus lepturus) in Northern Taiwan. JOURNAL OF MICROBIOLOGY, IMMUNOLOGY, AND INFECTION = WEI MIAN YU GAN RAN ZA ZHI 2019; 53:1021-1029. [PMID: 31182381 DOI: 10.1016/j.jmii.2019.04.012] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/14/2018] [Accepted: 04/19/2019] [Indexed: 02/07/2023]
Abstract
BACKGROUND Anisakid larvae are the food-borne pathogen highly prevalent among numerous marine fishes. Accidental consumption of infected raw or poorly cooked fish fillets may cause anisakiasis. METHODS This study used the multidisciplinary approach to investigate the occurrence of Anisakis nematodes in commonly consumed fish species, Scomber australasicus and Trichiurus lepturus purchased in Taipei Xinyi traditional fish market. RESULTS All the Anisakis larvae collected herein were identified morphologically as Anisakis type I or Anisakis type II. The prevalence and the mean intensity of Anisakis larvae collected from S. australasicus was 80.77%, 26.8 (10-32) and 100%, 49.0 (27-70) for T. lepturus. Using molecular analysis, 83.33% (180/216) were identified as Anisakis pegreffii, 6.05% (13/216) as Ascaris typica, 1.85% (4/216) as Ascaris physeteris and 8.80% (19/216) as hybrid genotype (A. pegreffii + Anisakis simplex) in S. australasicus. In T. lepturus, 86.31% (290/336) were identified as A. pegreffii, 2.38% (8/336) as A. typica, and 11.31% (38/336) as hybrid genotype (A. pegreffii + A. simplex [s.s]). The molecular phylogenetic analysis shows two cluster clades, one group includes A. pegreffii complex and the other include Ascaris paggiae, Ascaris brevispiculata, and A. physeteris. CONCLUSION Thus, A. pegreffii is the most abundant species and may be the potential causes of human infection.
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Affiliation(s)
- Pasaikou Sonko
- International PhD Program in Medicine, College of Medicine, Taipei Medical University, Taipei, Taiwan; Department of Molecular Parasitology and Tropical Diseases, School of Medicine, College of Medicine, Taipei Medical University, Taipei, Taiwan; Graduate Institute of Medical Sciences, College of Medicine, Taipei Medical University, Taipei, Taiwan; Center for International Tropical Medicine, College of Medicine, Taipei Medical University, Taipei, Taiwan
| | - Solomon Chih-Cheng Chen
- Department of Medical Research, Ditmanson Medical Foundation Chia-Yi Christian Hospital, Chiayi City, Taiwan; Department of Pediatrics, Ditmanson Medical Foundation Chia-Yi Christian Hospital, Chiayi City, Taiwan
| | - Chia-Mei Chou
- Department of Molecular Parasitology and Tropical Diseases, School of Medicine, College of Medicine, Taipei Medical University, Taipei, Taiwan; Center for International Tropical Medicine, College of Medicine, Taipei Medical University, Taipei, Taiwan
| | - Ying-Chieh Huang
- Department of Molecular Parasitology and Tropical Diseases, School of Medicine, College of Medicine, Taipei Medical University, Taipei, Taiwan; Center for International Tropical Medicine, College of Medicine, Taipei Medical University, Taipei, Taiwan
| | - Shao-Lun Hsu
- Department of Molecular Parasitology and Tropical Diseases, School of Medicine, College of Medicine, Taipei Medical University, Taipei, Taiwan
| | - Daniel Barčák
- Institute of Parasitology, Slovak Academy of Sciences, Košice, Slovak Republic
| | - Mikuláš Oros
- Institute of Parasitology, Slovak Academy of Sciences, Košice, Slovak Republic
| | - Chia-Kwung Fan
- International PhD Program in Medicine, College of Medicine, Taipei Medical University, Taipei, Taiwan; Department of Molecular Parasitology and Tropical Diseases, School of Medicine, College of Medicine, Taipei Medical University, Taipei, Taiwan; Graduate Institute of Medical Sciences, College of Medicine, Taipei Medical University, Taipei, Taiwan; Center for International Tropical Medicine, College of Medicine, Taipei Medical University, Taipei, Taiwan.
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Chen HX, Zhang LP, Gibson DI, Lü L, Xu Z, Li HT, Ju HD, Li L. Detection of ascaridoid nematode parasites in the important marine food-fish Conger myriaster (Brevoort) (Anguilliformes: Congridae) from the Zhoushan Fishery, China. Parasit Vectors 2018; 11:274. [PMID: 29716661 PMCID: PMC5930788 DOI: 10.1186/s13071-018-2850-4] [Citation(s) in RCA: 19] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/28/2017] [Accepted: 04/16/2018] [Indexed: 11/10/2022] Open
Abstract
BACKGROUND The whitespotted conger Conger myriaster (Brevoort) (Anguilliformes: Congridae) is an extremely marketable food fish, commonly consumed as sashimi or sushi in some Asian countries (i.e. Japan, Korea and China). Conger myriaster is also suspected as being an extremely important source of human anisakidosis. However, there is currently very little information on the levels of infection with ascaridoid nematode parasites in this economically important marine fish. The aims of the present study are to determine the species composition, prevalence and mean intensity of ascaridoid parasites of C. myriaster caught in the Zhoushan Fishery. RESULTS A total of 1142 third-stage ascaridoid larvae were isolated from 204 C. myriaster. The overall prevalence of infection was 100% (mean intensity 5.6). Nine species of such larvae were accurately identified using integrative taxonomic techniques involving both morphological and genetic data; these included Anisakis pegreffii, A. typica and A. simplex (sensu stricto) × A. pegreffii, Hysterothylacium fabri, H. aduncum, H. sinense, H. amoyense, H. zhoushanense and Raphidascaris lophii. Although high levels of infection and species richness were revealed in C. myriaster, most of the ascaridoid parasites (1135 individuals) were collected from the body cavity and visceral organs of the fish and only seven individuals of A. pegreffii were found in the musculature. CONCLUSIONS This study represents the first report C. myriaster from the Zhoushan Fishery being heavily infected with third-stage ascaridoid larvae. Among the ascaridoid larvae parasitic in this fish, an important etiological agent of human anisakidosis, A. pegreffii (L3), represents the predominant species. The genus Hysterothylacium has the highest species richness, with H. fabri (L3) being the most prevalent species. This high level of infection of A. pegreffii (L3) in C. myriaster suggests a high risk of anisakidosis or associated allergies for people consuming raw or poorly cooked fish originating from this marine area. These findings provide important basic information on the occurrence and infection parameters of ascaridoid nematodes in this economically important marine fish. They also have significant implications for the prevention and control of human anisakidosis when conger eels from the Zhoushan Fishery are consumed.
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Affiliation(s)
- Hui-Xia Chen
- Key Laboratory of Animal Physiology, Biochemistry and Molecular Biology of Hebei Province, College of Life Sciences, Hebei Normal University, 050024, Shijiazhuang, Hebei Province, People's Republic of China
| | - Lu-Ping Zhang
- Key Laboratory of Animal Physiology, Biochemistry and Molecular Biology of Hebei Province, College of Life Sciences, Hebei Normal University, 050024, Shijiazhuang, Hebei Province, People's Republic of China
| | - David I Gibson
- Department of Life Sciences, Natural History Museum, Cromwell Road, London, SW7 5BD, UK
| | - Liang Lü
- Key Laboratory of Animal Physiology, Biochemistry and Molecular Biology of Hebei Province, College of Life Sciences, Hebei Normal University, 050024, Shijiazhuang, Hebei Province, People's Republic of China
| | - Zhen Xu
- Medical College of Hebei University of Engineering, 056002, Handan, Hebei Province, People's Republic of China
| | - Hai-Tao Li
- Medical College of Hebei University of Engineering, 056002, Handan, Hebei Province, People's Republic of China
| | - Hui-Dong Ju
- Key Laboratory of Animal Physiology, Biochemistry and Molecular Biology of Hebei Province, College of Life Sciences, Hebei Normal University, 050024, Shijiazhuang, Hebei Province, People's Republic of China
| | - Liang Li
- Key Laboratory of Animal Physiology, Biochemistry and Molecular Biology of Hebei Province, College of Life Sciences, Hebei Normal University, 050024, Shijiazhuang, Hebei Province, People's Republic of China.
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Survey for the presence of ascaridoid larvae in the cinnamon flounder Pseudorhombus cinnamoneus (Temminck & Schlegel) (Pleuronectiformes: Paralichthyidae). Int J Food Microbiol 2017; 241:108-116. [DOI: 10.1016/j.ijfoodmicro.2016.10.018] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/23/2016] [Revised: 10/01/2016] [Accepted: 10/12/2016] [Indexed: 01/01/2023]
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Kuhn T, Cunze S, Kochmann J, Klimpel S. Environmental variables and definitive host distribution: a habitat suitability modelling for endohelminth parasites in the marine realm. Sci Rep 2016; 6:30246. [PMID: 27507328 PMCID: PMC4995312 DOI: 10.1038/srep30246] [Citation(s) in RCA: 37] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/23/2016] [Accepted: 07/01/2016] [Indexed: 11/25/2022] Open
Abstract
Marine nematodes of the genus Anisakis are common parasites of a wide range of aquatic organisms. Public interest is primarily based on their importance as zoonotic agents of the human Anisakiasis, a severe infection of the gastro-intestinal tract as result of consuming live larvae in insufficiently cooked fish dishes. The diverse nature of external impacts unequally influencing larval and adult stages of marine endohelminth parasites requires the consideration of both abiotic and biotic factors. Whereas abiotic factors are generally more relevant for early life stages and might also be linked to intermediate hosts, definitive hosts are indispensable for a parasite’s reproduction. In order to better understand the uneven occurrence of parasites in fish species, we here use the maximum entropy approach (Maxent) to model the habitat suitability for nine Anisakis species accounting for abiotic parameters as well as biotic data (definitive hosts). The modelled habitat suitability reflects the observed distribution quite well for all Anisakis species, however, in some cases, habitat suitability exceeded the known geographical distribution, suggesting a wider distribution than presently recorded. We suggest that integrative modelling combining abiotic and biotic parameters is a valid approach for habitat suitability assessments of Anisakis, and potentially other marine parasite species.
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Affiliation(s)
- Thomas Kuhn
- Goethe-University, Institute for Ecology, Evolution and Diversity; Senckenberg Biodiversity and Climate Research Centre; Senckenberg Gesellschaft für Naturforschung; Max-von-Laue-Str. 13, D-60438 Frankfurt/Main, Germany
| | - Sarah Cunze
- Goethe-University, Institute for Ecology, Evolution and Diversity; Senckenberg Biodiversity and Climate Research Centre; Senckenberg Gesellschaft für Naturforschung; Max-von-Laue-Str. 13, D-60438 Frankfurt/Main, Germany
| | - Judith Kochmann
- Goethe-University, Institute for Ecology, Evolution and Diversity; Senckenberg Biodiversity and Climate Research Centre; Senckenberg Gesellschaft für Naturforschung; Max-von-Laue-Str. 13, D-60438 Frankfurt/Main, Germany
| | - Sven Klimpel
- Goethe-University, Institute for Ecology, Evolution and Diversity; Senckenberg Biodiversity and Climate Research Centre; Senckenberg Gesellschaft für Naturforschung; Max-von-Laue-Str. 13, D-60438 Frankfurt/Main, Germany
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Li L, Zhao WT, Guo YN, Zhang LP. Nematode parasites infecting the starry batfish Halieutaea stellata (Vahl) (Lophiiformes: Ogcocephalidae) from the East and South China Sea. JOURNAL OF FISH DISEASES 2016; 39:515-529. [PMID: 25917527 DOI: 10.1111/jfd.12374] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/17/2014] [Revised: 02/23/2015] [Accepted: 02/25/2015] [Indexed: 06/04/2023]
Abstract
The starry batfish Halieutaea stellata (Vahl) is a small, benthic fish found in Indo-West Pacific Oceans. However, our present knowledge of the helminth parasites of this fish is still fragmentary. In this study, a total of 29 fish collected from the East and South China Sea were examined to determine the prevalence, intensity and species composition of helminth parasites in H. stellata. Using morphological and molecular approaches, four species of nematodes were found parasitic in this fish host, including the adults and fourth-stage larvae of Raphidascaroides nipponensis Yamaguti 1941; adults and third-stage larvae of Raphidascaris lophii (Wu 1949), third- and fourth-stage larvae of Hysterothylacium larval type IV-A of Shamsi, Gasser & Beveridge 2013 and third-stage larvae of Hysterothylacium amoyense (Hsü 1993). Halieutaea stellata represents a new host record for the three last-named nematodes. Raphidascaroides nipponensis with the highest prevalence (82.5%) and intensity (mean = 13.5) of infection was considered as the dominant parasite species in H. stellata. The detailed morphology of the different developmental stages of the four nematode species was studied using light and scanning electron microscopy. All nematode species were also genetically characterized by sequencing and analysing the internal transcribed spacer (ITS) of the ribosomal DNA. This study provides further data on the occurrence of nematode parasites in H. stellata and also contributes to facilitate an accurate and rapid diagnosis of the infection by these little-known nematodes.
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Affiliation(s)
- L Li
- Key Laboratory of Animal Physiology, Biochemistry and Molecular Biology of Hebei Province, College of Life Science, Hebei Normal University, Shijiazhuang, Hebei Province, China
| | - W-T Zhao
- Key Laboratory of Animal Physiology, Biochemistry and Molecular Biology of Hebei Province, College of Life Science, Hebei Normal University, Shijiazhuang, Hebei Province, China
| | - Y-N Guo
- Key Laboratory of Animal Physiology, Biochemistry and Molecular Biology of Hebei Province, College of Life Science, Hebei Normal University, Shijiazhuang, Hebei Province, China
| | - L-P Zhang
- Key Laboratory of Animal Physiology, Biochemistry and Molecular Biology of Hebei Province, College of Life Science, Hebei Normal University, Shijiazhuang, Hebei Province, China
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Luo HY, Chen HY, Chen HG, Shih HH. Scavenging hagfish as a transport host of Anisakid nematodes. Vet Parasitol 2016; 218:15-21. [PMID: 26872923 DOI: 10.1016/j.vetpar.2016.01.005] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/14/2015] [Revised: 11/10/2015] [Accepted: 01/04/2016] [Indexed: 11/25/2022]
Abstract
Hagfish are the most primitive craniates and scavengers, feeding on dead organisms as well as fish and invertebrates. Hagfish play an important ecological role in recycling nutrients, helping to recycle biomass from the upper water column. We investigated 265 specimens of four hagfish species, including Eptatretus burgeri, Eptatretus yangi, Eptatretus sheni and Eptatretus taiwanae from northeastern Taiwanese waters of the northwestern Pacific from November 2013 to June 2014. Eight species of Anisakid nematodes were identified: Anisakis pegreffii, Anisakis simplex s.s., a recombinant genotype of A. pegreffii and A. simplex s.s., Anisakis typica, Anisakis sp., Anisakis brevispiculata, Anisakis physeteris and Hysterothylacium amoyense. Anisakis sp. and H. amoyense represented new locality records. The prevalence, mean intensity and mean abundance of anisakid nematodes for all specimens were 21.51%, 5.39 larvae per fish and 1.16 larvae per fish, respectively. A. pegreffii was the most frequent species in E. burgeri, E. yangi and E. taiwanae, whereas in E. sheni, the dominant species was Anisakis sp. The number of nematodes was significantly related to the host length for E. burgeri and E. sheni, but was not related to the sex of the four hagfish species. This report of scavenging hagfish infected with Anisakid larvae suggests hagfish as a transport/paratenic host between cetaceans and piscivores. Anisakiasis may be caused by the consumption of infectious third-stage larvae in raw or undercooked hagfish.
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Affiliation(s)
- Hao-Yuan Luo
- Department of Life Science, National Taiwan University, Taipei 10617, Taiwan, ROC
| | - Hui-Yu Chen
- Department of Life Science, National Taiwan University, Taipei 10617, Taiwan, ROC
| | - Hui-Guan Chen
- Department of Life Science, National Taiwan University, Taipei 10617, Taiwan, ROC
| | - Hsiu-Hui Shih
- Department of Life Science, National Taiwan University, Taipei 10617, Taiwan, ROC.
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Li L, Gibson DI, Zhang LP. An annotated catalogue of the ascaridoid nematode parasites of Chinese vertebrates. Syst Parasitol 2016; 93:1-35. [PMID: 26739284 DOI: 10.1007/s11230-015-9617-5] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/22/2015] [Accepted: 11/21/2015] [Indexed: 11/27/2022]
Abstract
A catalogue, based on both examined specimens and the published literature, of all the ascaridoid nematodes recorded in China is presented. A total of 95 recognised species, representing 26 genera in five families, are reported. Detailed information on the type-host, type-locality, original reference, synonyms, annotated subsequent references of taxonomic importance, other host records, site of infection, location of type-specimens and distribution are listed for each recognised species. Additional comments on the taxonomic status of some species are also given. Moreover, some nomenclatural changes are proposed: (i) Toxascaris selenarctis Wang, 1965 and T. ailuri Wu, He & Hu, 1987 are placed in synonymy with Baylisascaris transfuga (Rudolphi, 1819); (ii) Raphidascaris lophii Wang & Wu, 1991 is a secondary homonym of R. lophii (Wu, 1949) and a replacement name, R. wangi nom. nov., is proposed for the former species; (iii) Aliascaris aetoplatea Luo, 2001 is transferred to Terranova Leiper & Atkinson, 1914, as T. aetoplatea (Luo, 2001) n. comb., and should be considered a species inquirenda; (iv) Ophidascaris orientalis (Wang, 1965) is resurrected as a valid species; (v) Phocascaris longispiculum Wang & Wu, 1991 and Ophidascaris agkistrodontis Wang, 1979 are treated as incertae sedis; and (vi) Hysterothylacium sauridae Li, Xu & Zhang, 2008 is listed as a nomen nudum.
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Affiliation(s)
- Liang Li
- Key Laboratory of Animal Physiology, Biochemistry and Molecular Biology of Hebei Province, College of Life Science, Hebei Normal University, Shijiazhuang, 050024, Hebei Province, People's Republic of China.
| | - David I Gibson
- Department of Life Sciences, Natural History Museum, Cromwell Road, London, SW7 5BD, UK
| | - Lu-Ping Zhang
- Key Laboratory of Animal Physiology, Biochemistry and Molecular Biology of Hebei Province, College of Life Science, Hebei Normal University, Shijiazhuang, 050024, Hebei Province, People's Republic of China
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Ascaridoid parasites infecting in the frequently consumed marine fishes in the coastal area of China: A preliminary investigation. Parasitol Int 2015; 65:87-98. [PMID: 26546570 DOI: 10.1016/j.parint.2015.11.002] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/19/2015] [Revised: 10/04/2015] [Accepted: 11/01/2015] [Indexed: 11/24/2022]
Abstract
Marine fishes represent the important components of the diet in the coastal areas of China and they are also natural hosts of various parasites. However, to date, little is known about the occurrence of ascaridoid parasites in the frequently consumed marine fishes in China. In order to determine the presence of ascaridoid parasites in the frequently consumed marine fishes in the coastal town Huizhou, Guangdong Province, China, 211 fish representing 45 species caught from the South China Sea (off Daya Gulf) were examined. Five species of ascaridoid nematodes at different developmental stages were detected in the marine fishes examined herein, including third-stage larva of Anisakis typica (Diesing, 1860), third and fourth-stage larvae of Hysterothylacium sp. IV-A of Shamsi, Gasser & Beveridge, 2013, adult and third-stage larvae of Hysterothylacium zhoushanense Li, Liu & Zhang, 2014, adults and third-stage larvae of Raphidascaris lophii (Wu, 1949) and adults of Raphidascaris longispicula Li, Liu & Zhang, 2012. The overall prevalence of infection is 18.0%. Of them, Hysterothylacium sp. IV-A with the highest prevalence (17.5%) and intensity (mean=14.6) of infection was the predominant species. The prevalence and intensity of A. typica were very low (1/211 of marine fish infected with an intensity of one parasite per fish). The morphological and molecular characterization of all nematode species was provided. A cladistic analysis based on ITS sequence was constructed in order to determine the phylogenetic relationships of these ascaridoid parasites obtained herein. The present study provided important information on the occurrence and diagnosis of ascaridoid nematodes in the commercially important marine fishes from the South China Sea. The low level of infection and the species composition of ascaridoid nematodes seem to indicate the presence of low risk of human anisakidosis when local population consumed these marine fishes examined herein.
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Kong Q, Fan L, Zhang J, Akao N, Dong K, Lou D, Ding J, Tong Q, Zheng B, Chen R, Ohta N, Lu S. Molecular identification of Anisakis and Hysterothylacium larvae in marine fishes from the East China Sea and the Pacific coast of central Japan. Int J Food Microbiol 2015; 199:1-7. [DOI: 10.1016/j.ijfoodmicro.2015.01.007] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/12/2014] [Revised: 12/01/2014] [Accepted: 01/07/2015] [Indexed: 10/24/2022]
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Guo YN, Xu Z, Zhang LP, Hu YH, Li L. Occurrence of Hysterothylacium and Anisakis nematodes (Ascaridida: Ascaridoidea) in the tanaka’s snailfish Liparis tanakae (Gilbert & Burke) (Scorpaeniformes: Liparidae). Parasitol Res 2014; 113:1289-300. [DOI: 10.1007/s00436-014-3767-2] [Citation(s) in RCA: 27] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/22/2013] [Accepted: 01/10/2014] [Indexed: 11/25/2022]
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