Swimbladder nematodes (Anguillicola spp.) and gill monogeneans (Pseudodactylogyrus spp.) parasitic on the European eel (Anguilla anguilla)

Køie, Marianne

doi:10.1093/icesjms/47.3.391

Cited by 84 publications

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“…These eel parasites were introduced into western European water bodies as a result of uncontrolled intercontinental transfer of live eels for consumption (Køie, 1991), and they are considered serious pathogens (Kennedy, 2007). Infection with A. crassus reduces the functionality of the swimbladder as a hydrostatic organ and is feared to influence the ability of eels to migrate to their spawning grounds in the Sargasso Sea (Kennedy, 2007).…”

Section: Introductionmentioning

confidence: 99%

Salinity dependence of parasite infestation in the European eel Anguilla anguilla in northern Germany

Jakob

Hanel

Klimpel

et al. 2008

ICES Journal of Marine Science

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K. 2009. Salinity dependence of parasite infestation in the European eel Anguilla anguilla in northern Germany. -ICES Journal of Marine Science, 66: 358-366.The aim of the study was to examine metazoan parasite communities of European eels (Anguilla anguilla) in fresh-water, brackish water and marine localities in northern Germany. In all, 29 parasite species/taxa were found in 170 eels: eight digeneans, one monogenean, five cestodes, ten nematodes, two acanthocephalans, and three crustaceans. Measures of diversity characteristics of the helminth communities included species richness, Shannon's diversity index and its evenness, and the Berger -Parker dominance index. The highest species diversity and lowest dominance values were calculated for the helminth communities of eels from the two Baltic Sea localities. Parasite communities of European eels clearly exhibit the habitat preferences of their hosts, salinity-dependent specificities, and a clustering into fresh-water, brackish, and marine groups. The highly pathogenic parasite species Anguillicola crassus and Pseudodactylogyrus spp. were found at all sampling sites in fresh water and brackish water, with high prevalence. Basic information is provided on the risks of restocking programmes solely focusing on fresh-water sites.

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Section: Introductionmentioning

confidence: 99%

Salinity dependence of parasite infestation in the European eel Anguilla anguilla in northern Germany

Jakob

Hanel

Klimpel

et al. 2008

ICES Journal of Marine Science

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“…(Ogawa and Egusa, 1976;Egusa, 1979). Later, in association with the transportation of live Japanese eel to Europe, the two monogenean species spread to wild and cultured European eel, causing economic losses in European eel farms and stress-related mortality among wild eel populations (Køie, 1991). These two incidences, in Japan and in Europe, indicated that European eel is much more susceptible to P. spp.…”

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confidence: 99%

Comparative Susceptibility of Japanese and European Eels to Infections with Pseudodactylogyrus spp. (Monogenea)

2008

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ABSTRACT-Japanese eel Anguilla japonica and European eel A. anguilla, 65 individuals each, were exposed in a tank to 8,600 oncomiracidia of Pseudodactylogyrus bini and P. anguillae, monogeneans originally recorded on Japanese eel from Asia. Infection was monitored weekly for 6 weeks to compare susceptibility to these monogenean infections between the two eel species. Approximately 40% of the oncomiracidia infected the eels. In the six samplings, both P. bini and P. anguillae were always found in greater numbers on the gills of European eel than on Japanese eel. The first generation of parasites matured within 2 weeks, laying eggs in the tank, and the second generation appeared on the gills of the eels on the third week. European eel was more susceptible not only to the first but also to the second and later generations of parasites than Japanese eel. Besides, both parasites grew faster on European eel than on Japanese eel. This is the first experimental evidence that there are substantial differences in the susceptibility to P. spp. infection between European eel, an unnatural host in Japan, and Japanese eel, the natural host in this country.

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“…P. anguillae may also dwell and reproduce in brackish water habitats. Its upper salinity tolerance limit is 20‰ (Køie 1988). Thus the eel examined in this study could have become infected with P. anguillae earlier than they acquired P. bini.…”

Section: Discussionmentioning

confidence: 83%

Pseudodactylogyrus anguillae (Yin et Sproston, 1948) Gussev, 1965 and P. bini (Kikuchi, 1929) Gussev, 1965 (Monogenea: Pseudodactylogyridae) on gills of European eel, Anguilla anguilla (Linnaeus, 1758) ascending rivers of the Pomeranian coast, Poland

Sobecka¹,

Pilecka-Rapacz²

2003

Acta Ichthyol. Piscat.

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Swimbladder nematodes (Anguillicola spp.) and gill monogeneans (Pseudodactylogyrus spp.) parasitic on the European eel (Anguilla anguilla)

Cited by 84 publications

References 0 publications

Salinity dependence of parasite infestation in the European eel Anguilla anguilla in northern Germany

Salinity dependence of parasite infestation in the European eel Anguilla anguilla in northern Germany

Comparative Susceptibility of Japanese and European Eels to Infections with Pseudodactylogyrus spp. (Monogenea)

Pseudodactylogyrus anguillae (Yin et Sproston, 1948) Gussev, 1965 and P. bini (Kikuchi, 1929) Gussev, 1965 (Monogenea: Pseudodactylogyridae) on gills of European eel, Anguilla anguilla (Linnaeus, 1758) ascending rivers of the Pomeranian coast, Poland

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