Abstract
In the present study,Diplectanum laubieri was redescribed from material obtained from wild and cultured fish. The population dynamics ofD. aequans andD. laubieri under culture conditions was studied. The prevalence and mean intensity (average number of worms per parasitized fish) were 80.64% and 112 forD. aequans and 67.74% and 59.61 forD. laubieri, respectively. Both Diplectanidae exhibited seasonal variations, with maximal infection levels occurring in winter, suggesting continuous parasites recruitment, and infection levels tended to increase with host age. Male hosts were more heavily infested than females. The apparent positive association betweenD. aequans andD. laubieri was not confirmed statistically. The Diplectanidae showed definite and different patterns of gill distribution. Histopathological gill damage mainly consisted of hyperplasia of the epithelium, fusion of branchial lamellae and the presence of hemorrhagic and inflammatory foci with leucocytic infiltration. The results demonstrated the pathological importance of both Diplectanidae for the cultivation of sea bass.
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References
Dyková I, Lom J (1987) Histopathological changes in fish gills infected with myxosporidian parasites of the genusHenneguya. J Fish Biol 12:197–202
Giavenni R (1983) Parassitosi sostenuta daDiplectanum aequans (Wagener, 1857) Diesing, 1858 in branzino (Dicentrarchus labrax L.) di allevamento. Riv Ital Piscic Ittiopathol [A] 18:167–176
Giavenni R (1988) Some parasitic and other diseases occurring in sea bass (Dicentrarchus labrax L.) broodstocks in Italy. Bull Eur Assoc Fish Pathol 8:45–46
González-Lanza C (1984) Estudios sobre Monogenea de Cyprinidae del río Esla. INIA Colección Tesis Doctorales 43, Madrid
González-Lanza C, Alvarez-Pellitero P (1982) Description and population dynamics ofDactylogyrus legionensis n. sp. fromBarbus barbus bocagei Steind. J Helminthol 56:263–273
González-Lanza C, Alvarez-Pellitero P, Sitjá-Bobadilla A (1988) Monogenea of cultured sea bass (Dicentrarchus labrax) in the Mediterranean region of Spain. Abstract, International Symposium on Monogenea, České Budějovice, Czechoslovakia, August 7–13
Kurochkin YV (1964) The formation of the helminthofauna of juvenile stages ofCyprinus carpio andRutilus rutilus caspicus in the lower Volga Delta. Proceedings of the Symposium on Parasitic Worms and Aquatic Conditions, Prague, 29 October–2 November 1962. Czechoslovak Academy of Sciences. Prague, pp 197–202
Lambert A, Maillard C (1974) Parasitisme branchial simultané par deux espèces deDiplectanum Diesing, 1858 (Monogenea, Monopisthocotylea) chezDicentrarchus labrax (L. 1758) (Téléostéen). C R Acad Sci (Paris) 279:1345–1347
Lambert A, Maillard C (1975) Répartition branchiale de deux MonogènesDiplectanum aequans (Wagener 1857) Diesing, 1858 etDiplectanum laubieri Lambert et Maillard 1974 (Monogenea, Monopisthocotylea) parasites simultanés deDicentrarchus labrax (Téléostéen). Ann Parasitol Hum Comp 50:691–699
Oliver G (1968) Recherches sur les Diplectanidae (Monogenea) parasites des Teléostéens du golf du Lion: I. Diplectaninae Monticelli, 1935. Vie Milieu Ser A 19:95–138
Oliver G (1977) Effet pathogène de la fixation deDiplectanum aequans (Wagener, 1857) Diesing, 1858 (Monogenea, Monopisthocotylea, Diplectanidae) sur les branchies deDicentrarchus labrax (Linnaeus, 1758) (Pisces, Serranidae). Z Parasitenkd 53:7–11
Paling JE (1965) The population dynamics of the monogenean gill parasiteDiscocotyle sagitata Leukart on Windermere trout,Salmo trutta L. Parasitology 55:667–694
Paperna I, Baudin-Laurencin F (1979) Parasitic infections of sea bass,Dicentrarchus labrax, and gilt head sea bream,Sparus curata, in mariculture facilities in France. Aquaculture 16:173–175
Pickering AD, Christie P (1980) Sexual differences in the incidence and severity of ectoparasite infestation of the brown trout,Salmo trutta L. J Fish Biol 16:669–683
Rohde K (1977) A non-competitive mechanism responsible for restricting niches. Zool Anz 199:164–172
Rohde K (1982) Ecology of marine parasites University of Queensland Press, St. Lucia, Queensland
Roubal FR (1989) Pathological changes in the gill filaments ofAcanthopagrus australis (family Sparidae) associated with the post-settlement growth of a lernaeopodid copepod,Alella macrotrachelus. J Fish Biol 34:333–342
Silan P (1984) Biologie comparée des populations deDiplectanum aequans etDiplectanum laubieri, Monogènes branchiaux deDicentrarchus labrax. Thèse 3ème cycle USTL. Montpellier
Silan P, Maillard C (1986) Modalités de l'infestation parDiplectanum aequans monogène ectoparasite deDicentrarchus labrax en aquiculture. Elements d'epidemiologie et de prophylaxie. In: Vivarès CP, Bonami JR, Jaspers E (eds) Pathology in marine aquaculture. (European Aquaculture Society Special Publication 9) Bredene, Belgium, pp 139–152
Silan P, Euzet L, Maillard C, Cabral P (1987) Le biotope des ectoparasites branchiaux de poissons: facteurs de variations dans le modèle Bar-Monogènes. Bull Ecol, 18:383–391
Thune RL, Rogers WA (1981) Gill lesions in bluegill,Lepomis macrochirus Rafinesque, infested withCleidodiscus robustus Mueller, 1934 (Monogenea: Dactylogyridae). J Fish Dis 4:277–280
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González-Lanza, C., Alvarez-Pellitero, P. & Sitjá-Bobadilla, A. Diplectanidae (Monogenea) infestations of sea bass,Dicentrarchus labrax (L.), from the Spanish Mediterranean area. Parasitol Res 77, 307–314 (1991). https://doi.org/10.1007/BF00930906
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DOI: https://doi.org/10.1007/BF00930906