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DAO 57:177-180 (2003)
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Abstract
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Lernanthropus kroyeri infections in farmed sea bass Dicentrarchus labrax: pathological features
Maurizio Manera1,*, Bahram Sayyaf Dezfuli2
1Department of Food Science, University of Teramo, Piazza Aldo Moro, 45, 64100 Teramo, Italy
2Department of Biology, University of Ferrara, Via Borsari, 46, 44100 Ferrara, Italy
*Email: maurizio.manera2@tin.it
ABSTRACT: Twenty sea bass Dicentrarchus labrax L. from a fish farm (floating cage) in Greece were examined for the presence of parasites. The gills of 7 (35%) fish were infected with adult female specimens of the parasitic copepod
Lernanthropus kroyeri van Beneden, 1851, and the intensity of infection ranged from 1 to 24 parasites per host. The most infected portion of the gills appeared to be the primary lamellae. Erosion, desquamation and necrosis of the secondary
lamellae were noticed near the site of copepod attachment; furthermore, the terminal claw of the second antennae lacerated tissue and vessels of infected gill. Parasitism by L. kroyeri affected the host's condition factor (mean ± SE in uninfected
vs parasitized; 1.88 ± 0.04 vs 1.66 ± 0.12; p < 0.05).
KEY WORDS: Dicentrarchus labrax · Crustacean parasite · Lernanthropus kroyeri · Histopathology
Full text in pdf format
Published in DAO Vol.
57, No. 1-2
(2003) on December 3
Print ISSN: 0177-5103; Online ISSN: 1616-1580.
Copyright © Inter-Research, Oldendorf/Luhe, 2003
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