+ Site Statistics
References:
52,654,530
Abstracts:
29,560,856
PMIDs:
28,072,755
+ Search Articles
+ Subscribe to Site Feeds
Most Shared
PDF Full Text
+ PDF Full Text
Request PDF Full Text
+ Follow Us
Follow on Facebook
Follow on Twitter
Follow on LinkedIn

+ Translate
+ Recently Requested

Epidemiology of Anguillicola crassus in the European eel (Anguilla anguilla) from two rivers in southern England



Epidemiology of Anguillicola crassus in the European eel (Anguilla anguilla) from two rivers in southern England



Parasitology 130(Pt 6): 679-686



European eels Anguilla anguilla from the rivers Thames and Test, in the south of England, were examined between 2000 and 2003 for infection with the swim-bladder nematode Anguillicola crassus. Since its introduction to Thames eels at tidal estuarine locations circa 1987, A. crassus has become established in non-tidal freshwater stretches upriver and data from these locations are reported for the first time. The prevalence of infection at Thames estuary locations was higher during 2000-2003 than for the period 1987-1992. By 2003, similar prevalences were observed at freshwater and estuarine locations, but infection intensities were significantly higher in freshwater. Eels from the river Test appear to have been recently colonized by A. crassus (circa 2000). Parasite population establishment within these eels was uncharacteristically slow during 2000-2001, with low prevalence and intensity of infection, and few gravid females during this period. By 2003, infection levels in Test eels were similar to those in Thames eels. The expansion of the A. crassus population in Test eels has occurred in the absence of the paratenic host ruffe Gymnocephalus cernuus, and at suboptimal pH for the survival and infectivity of free-living larvae. The epidemiology of A. crassus in Test eels demonstrates that transmission of A. crassus by ruffe is not required for high prevalence and intensity of infection in eels. However, the consistently low and atypical levels of infection in Test eels during 2000 and 2001 suggests that paratenic transmission by ruffe may provide a substantial contribution to the dynamics of A. crassus in eels in the early years following introduction, by facilitating the rapid increase in prevalence and intensity of A. crassus infection that typically occurs during this time.

(PDF emailed within 0-6 h: $19.90)

Accession: 004145728

Download citation: RISBibTeXText

PMID: 15977905

DOI: 10.1017/s0031182004007139



Related references

Differences in susceptibility of the European eel (Anguilla anguilla) and the Japanese eel (Anguilla japonica) to the swim-bladder nematode Anguillicola crassus. Parasitology 129(Pt 4): 491-496, 2004

Distribution and prevalence of Anguillicola crassus (Nematoda) in eels Anguilla anguilla of the rivers Rhine and Naab, Germany. Diseases of Aquatic Organisms 32(2): 137-143, 1998

Contamination by Anguillicola crassus of five coastal eel populations Anguilla anguilla in Brittany France Contamination par Anguillicola crassus de cinq populations danguilles Anguilla anguilla du littoral de Bretagne Sud France. Bulletin Francais de la Peche et de la Pisciculture, 368: 21-26, 2003

The swimbladder nematode Anguillicola crassus in the European eel Anguilla anguilla and the Japanese eel Anguilla japonica: differences in susceptibility and immunity between a recently colonized host and the original host. Journal of Helminthology 80(2): 129-136, 2006

Study on the infestation of ells Anguilla anguilla with the parasite Anguillicola crassus in the Sebou estuary, northwestern Morocco Etude de linfestation des anguilles Anguilla anguilla par les parasite Anguicolla crassus dans lestuaire du Sebou au nord-ouest du Maroc. Bulletin de l'Institut Scientifique Section Sciences de la Vie - Rabat. 2004- ; 26-27: 39-42, 2005

Colonization larval survival and epidemiology of the nematode anguillicola crassus parasitic in the eel anguilla anguilla in britain uk. Journal of Fish Biology 36(2): 117-132, 1990

Colonization, larval survival and epidemiology of the nematode Anguillicola crassus, parasitic in the eel, Anguilla anguilla in Britain. Journal of Fish Biology, 362: 117-131, 1990

Some properties of the blood of European eel (Anguilla anguilla) and the possible relationship with Anguillicola crassus infestations. Aquaculture, 763-4: 203-208, 1989

Regulation of Anguillicola crassus infrapopulations in their definitive host, the European eel, Anguilla anguilla. Parasitology5: 14, 1707-1716, 2008

Histopathological changes in the swimbladder wall of the European eel Anguilla anguilla due to infections with Anguillicola crassus. Diseases of Aquatic Organisms 39(2): 121-134, 2000

Changes in gas composition in the swimbladder of the European eel (Anguilla anguilla) infected with Anguillicola crassus (Nematoda). Parasitology 112: 233-238, 1996

Parallel analysis of some heavy metals concentrations in the Anguillicola crassus and the European eel Anguilla anguilla. Helminthologia (Bratislava) 36(2): 79-81, June, 1999

Humoral immune response of European eel Anguilla anguilla experimentally infected with Anguillicola crassus. Diseases of Aquatic Organisms 42(1): 61-69, 2000

Prevalence and intensity of Anguillicola crassus infection of the European eel, Anguilla anguilla , in Lake Vortsjarv. Proceedings of the Estonian Academy of Sciences Biology Ecology 51(1): 62-73, March, 2002

Migratory response of European eel (Anguilla anguilla) phagocytes to the eel swimbladder nematode Anguillicola crassus. Parasitology Research 102(6): 1311-1316, 2008