Hostname: page-component-cd9895bd7-dzt6s Total loading time: 0 Render date: 2024-12-26T19:39:08.238Z Has data issue: false hasContentIssue false
  • English
  • Français

Divergence between Asian, European and Canadian populations of the monogenean Pseudodactylogyrus bini indicated by ribosomal DNA patterns

Published online by Cambridge University Press:  16 March 2010

P.W. Kania ,
H. Taraschewski ,
Y.-S. Han ,
D.K. Cone  and
K. Buchmann
P.W. Kania
Affiliation:
Department of Veterinary Disease Biology, Faculty of Life Sciences, University of Copenhagen, Denmark
H. Taraschewski
Affiliation:
Zoologische Institut, Universität Karlsruhe, 76128Karlsruhe, Germany
Y.-S. Han
Affiliation:
Institute of Fishery Science, College of Life Science, National Taiwan University, Taipei106, Taiwan
D.K. Cone
Affiliation:
Department of Biology, Saint Mary's University, Halifax, NS, Canada
K. Buchmann*
Affiliation:
Department of Veterinary Disease Biology, Faculty of Life Sciences, University of Copenhagen, Denmark
*
*Fax: +45-35332755 E-mail: kub@life.ku.dk
Get access Rights & Permissions [Opens in a new window]

Abstract

The monogenean Pseudodactylogyrus bini parasitizes the gills of eels belonging to the genus Anguilla. Circumstantial evidence suggests that the parasite has been spread accidentally from the Pacific area (East Asia) to Europe by the intercontinental eel trade. This is based on early descriptions of the parasites from Asian regions and the lack of records of the parasites in Europe before 1977. In addition, the susceptibility of European eels to infections with the parasite is significantly higher compared to that of Japanese eels, which could indicate that the European eel had not undergone co-evolution with this parasite. The present study was undertaken to elucidate the origin of the parasite by using molecular tools. Parasite samples were obtained from Europe (Germany), Asia (Taiwan) and Nova Scotia, the latter of which is the first record of P. bini in Canada. Sequencing of rDNA comprising part of the internal transcribed spacer 1 (ITS1) gene, 5.8S and part of ITS2 (1323 bp) showed that P. bini isolates from the first two regions showed high variability. One sequence was found both in a number of Asian parasites and with one to a few transitions in European parasites, which could indicate that they were split recently into the two regions. Other sequence variations suggested that one or a few genotypes of P. bini were imported on one occasion from Asia to Europe and that the two geographic isolates subsequently developed differently in the two regions. The Nova Scotian/Canadian isolates showed no variation and were found to be unique compared to the European and Taiwanese forms, indicating that this population is independent in origin. This could indicate that the Canadian parasites were introduced to North America on another occasion and independently of the European colonization.

Type
Research Papers
Information
Journal of Helminthology , Volume 84 , Issue 4 , December 2010 , pp. 404 - 409
Copyright
Copyright © Cambridge University Press 2010

Access options

Get access to the full version of this content by using one of the access options below. (Log in options will check for institutional or personal access. Content may require purchase if you do not have access.)

References

Buchmann, K. (2007) An introduction to fish parasitological methods – classical and molecular techniques. 130 pp. Frederiksberg, Denmark, Biofolia Press.Google Scholar
Buchmann, K. & Bjerregaard, J. (1990) Mebendazole treatment of pseudodactylogyrosis in an intensive eel culture system. Aquaculture 86, 139–153.CrossRefGoogle Scholar
Buchmann, K., Mellergaard, S. & Køie, M. (1987) Pseudodactylogyrus infections in eel: a review. Diseases of Aquatic Organisms 3, 51–57.CrossRefGoogle Scholar
Buchmann, K., Felsing, A. & Slotved, H.-C. (1992) Effects of metrifonate, sodium chloride and bithionol on an European population of Pseudodactylogyrus spp. and the host Anguilla anguilla. Bulletin of the European Association for Fish Pathologists 12, 57–60.Google Scholar
Chan, B. & Wu, B. (1984) Studies on the pathogenicity, biology, and treatment of Pseudodactylogyrus for the eels in fish farms. Acta Zoologia Sinica 30, 173–180.Google Scholar
Christison, K.W. & Baker, G.C. (2006) First record of Pseudodactylogyrus anguillae (Yin & Sproston, 1948) (Monogenea) from South Africa. African Zoology 42, 279–285.CrossRefGoogle Scholar
Chung, H.-Y., Lin, I.H. & Kou, G.-H. (1984) Study of the parasites on the gill of cultured eel in Taiwan. COA Fisheries Series, No. 10. Fish Diseases Research 4, 24–33.Google Scholar
Cone, D.K. & Marcogliese, D.J. (1995) Pseudodactylogyrus anguillae on Anguilla rostrata in Nova Scotia – an endemic or an introduction? Journal of Fish Biology 47, 177–178.Google Scholar
Eddy, S. (1998) Profile hidden Markov models. Bioinformatics 14, 755–763.CrossRefGoogle ScholarPubMed
Fang, J., Shirakashi, S. & Ogawa, K. (2008) Comparative susceptibility of Japanese and European eels to infections with Pseudodactylogyrus spp. (Monogenea). Fish Pathology 43, 144–151.CrossRefGoogle Scholar
Gelnar, M., Scholz, T., Matejusova, I. & Konecny, R. (1996) Occurrence of Pseudodactylogyrus anguillae (Yin & Sproston, 1948) and P. bini (Kikuchi, 1929), parasites of eel, Anguilla anguilla L., in Austria. Annalen Naturhistorischen Museum Wien 98, 1–4.Google Scholar
Golovin, P.P. (1977) Monogeneans of eel during its culture using heated water. pp. 144–150inInvestigations of Monogeoidea in USSR. Leningrad, Academy of Science, Zoological Insitute, USSR.Google Scholar
Gussev, A.V. (1965) A new genus of monogenetic trematodes from the eel, genus Anguilla. Trudy Zoologiya 35, 119–125.Google Scholar
Hayward, C.J., Iwashita, M., Crane, J.S. & Ogawa, K. (2001) First report of the invasive eel pest Pseudodactylogyrus bini in North America and in wild American eels. Diseases of Aquatic Organisms 44, 53–60.CrossRefGoogle ScholarPubMed
Kennedy, C.R. (2007) The pathogenic helminth parasites of eels. Journal of Fish Diseases 30, 319–334.CrossRefGoogle ScholarPubMed
Kikuchi, H. (1929) Two new species of Japanese trematodes belonging to Gyrodactylidae. Annotationes Zoologia Japon 12, 175–186.Google Scholar
Lambert, A., Le Brun, N. & Pariselle, A. (1984) Presence en France de Pseudodactylogyrus anguillae (Yin et Sproston, 1948) Gussev, 1965 (Monogenea, Monopisthocotyles) parasite branchial de l'anguille européenne, Anguilla anguilla, en eau douce. Annales Parasitologie Humaine et Comparé 60, 91–92.Google Scholar
Molnar, K. (1983) Das Vorkommen von parasitären Hakensaugwürmern bei der Aalaufsucht in Ungarn. Zeitschrift für Binnenfischerei der DDR 30, 341–345.Google Scholar
Ogawa, K. & Egusa, S. (1976) Studies on eel pseudodactylogyrosis – I. Morphology and classification of three eel dactylogyrids with a proposal of a new species, Pseudodactylogyrus microorchis. Bulletin of the Japanese Society for Scientific Fisheries 42, 395–404.CrossRefGoogle Scholar
Oliver, G. (1994) Teratologies occurring in the family Diplectanidae Bychowsky, 1957 (Monogenea, Monopisthocotylea, dactylogyridea) and their possible evolutive signification. Annales des Sciences Naturelles – Zoologie et Biologie Animale 15, 1–13.Google Scholar
Sasal, P., Taraschewski, H., Valade, P., Grondin, H., Wielgoss, S. & Moravec, F. (2008) Parasite communities in eels of the Island of Reunion (Indian Ocean): a lesson in parasite introduction. Parasitology Research 102, 1343–1350.CrossRefGoogle ScholarPubMed
Taraschewski, H. (2006) Hosts and parasites as aliens. Journal of Helminthology 80, 99–128.CrossRefGoogle ScholarPubMed
Wielgoss, S., Taraschewski, H., Meyer, A. & Wirth, T. (2008) Population structure of the parasitic nematode Anguillicola crassus, an invader of declining North Atlantic eel stocks. Molecular Ecology 17, 3478–3495.CrossRefGoogle ScholarPubMed
Yin, W.-Y. & Sproston, N.G. (1948) Studies on the monogenetic trematodes of China, Parts 1–5. Sinensia 19, 57–85.Google Scholar