Manera Maurizio, Dezfuli Bahram Sayyaf
Department of Food Science, University of Teramo, Piazza Aldo Moro, 45, 64100 Teramo, Italy.
Dis Aquat Organ. 2003 Dec 3;57(1-2):177-80. doi: 10.3354/dao057177.
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).
对来自希腊一个养鱼场（浮动网箱）的20条海鲈（Dicentrarchus labrax L.）进行了寄生虫检查。7条鱼（35%）的鳃被寄生桡足类Lernanthropus kroyeri van Beneden，1851的成年雌性标本感染，感染强度为每个宿主1至24条寄生虫。鳃最易感染的部分似乎是初级鳃小片。在桡足类附着部位附近，观察到次级鳃小片有侵蚀、脱屑和坏死；此外，第二触角的末端爪撕裂了受感染鳃的组织和血管。克氏Lernanthropus的寄生影响了宿主的状况因子（未感染与寄生的平均值±标准误；1.88±0.04对1.66±0.12；p<0.05）。
