Change search
ReferencesLink to record
Permanent link

Direct link
Effects of the swimbladder parasite Anguillicola crassus on the migration of European silver eels Anguilla anguilla in the Baltic Sea
Stockholm University, Faculty of Science, Department of Systems Ecology.
Uppsala Univ, Dept Zool.
Swedish Board Fisheries.
Stockholm University, Faculty of Science, Department of Systems Ecology.
2009 (English)In: Journal of Fish Biology, ISSN 0022-1112, Vol. 74, 2158-2170 p.Article in journal (Refereed) Published
Abstract [en]

In a mark-recapture study in 2006, migrating European Anguilla anguilla silver eels were caught, tagged and released in the Baltic Sea and recaptures in commercial pound nets examined for possible effects on migration of infection with the swimbladder parasite Anguillicola crassus. The overall recapture rate was 36%. The prevalence of infection was lowest at the northernmost sampling site. There were no significant differences between infected and uninfected A. anguilla in condition indices, body fat content and estimated migration speeds. Parasite infection intensity levels were significantly negatively correlated with times and distances covered between release and recapture, but did not correlate with migration speed. It appears that more heavily infected A. anguilla were relatively more vulnerable to recapture in pound nets. It is hypothesized that parasite-induced damage to the swimbladder inhibited vertical migrations and infected A. anguilla tended to migrate in shallower coastal waters, relatively close to the shore.

Place, publisher, year, edition, pages
2009. Vol. 74, 2158-2170 p.
National Category
URN: urn:nbn:se:su:diva-32968DOI: 10.1111/j.1095-8649.2009.02296.xISI: 000268271100021OAI: diva2:282074
Available from: 2009-12-18 Created: 2009-12-18Bibliographically approved

Open Access in DiVA

No full text

Other links

Publisher's full text
By organisation
Department of Systems Ecology
In the same journal
Journal of Fish Biology

Search outside of DiVA

GoogleGoogle Scholar
The number of downloads is the sum of all downloads of full texts. It may include eg previous versions that are now no longer available

Altmetric score

Total: 80 hits
ReferencesLink to record
Permanent link

Direct link