<abstract xml:lang="en" xmlns="http://www.w3.org/1999/xhtml"><p>This study presents the parasitic relationship between the leech, <italic>Caspiobdella fadejewi</italic>, and the juvenile Atlantic sturgeon, <italic>Acipenser oxyrinchus</italic>. The aim was to determine leech invasion intensity and extensity and describe parasite feeding location preferences on the ventral side of the snout and gill cavities. The prevalence of <italic>C. fadejewi</italic> occurrence was 37.3%, at an intensity of one to eight leeches. It was confirmed that the intensity of leech occurrence was positively correlated with sturgeon total length (r=0.545, P&lt;0.05, N=15). The host-searching mechanism is most probably based on positive phototaxis. This is the first record of <italic>C. fadajewi</italic> from <italic>A. oxyrinchus</italic>. The leech was first observed during routine examinations of sturgeon collected in June 2008. The leeches were usually attached to the inside lower portion of opercula near the isthmus.</p></abstract>

This study presents the parasitic relationship between the leech, Caspiobdella fadejewi, and the juvenile Atlantic sturgeon, Acipenser oxyrinchus. The aim was to determine leech invasion intensity and extensity and describe parasite feeding location preferences on the ventral side of the snout and gill cavities. The prevalence of C. fadejewi occurrence was 37.3%, at an intensity of one to eight leeches. It was confirmed that the intensity of leech occurrence was positively correlated with sturgeon total length (r=0.545, P<0.05, N=15). The host-searching mechanism is most probably based on positive phototaxis. This is the first record of C. fadajewi from A. oxyrinchus. The leech was first observed during routine examinations of sturgeon collected in June 2008. The leeches were usually attached to the inside lower portion of opercula near the isthmus.

Atlantic sturgeon, <italic>Acipenser oxyrinchus</italic> Mitchill, infected by the parasitic leech, <italic>Caspiobdella fadejewi</italic> (Epshtein) (Hirudinea; Piscicolidae), in the Drwęca River

Department of Zoology, University of Warmia and Mazury, Oczapowskiego 5, 10-718 Olsztyn, Poland

Department of Ichthyology Inland Fisheries Institute in Olsztyn, Poland

Fisheries & Aquatic Life

Atlantic sturgeon,  Mitchill, infected by the parasitic leech,  (Epshtein) (Hirudinea; Piscicolidae), in the Drwęca River

This study presents the parasitic relationship between the leech, Caspiobdella fadejewi, and the juvenile Atlantic sturgeon, Acipenser oxyrinchus. The aim was...

Atlantic sturgeon, Acipenser oxyrinchus Mitchill, infected by the parasitic leech, Caspiobdella fadejewi (Epshtein) (Hirudinea; Piscicolidae), in the Drwęca River

Publié en ligne: 18 juil. 2011

Pages: 87 - 93

DOI: https://doi.org/10.2478/v10086-011-0010-y

Mots clés
leech, Hirudinea, Piscicolidae, European

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