This study deals with the influence of temperature on the hatching of eggs of Diplectanum aequans, a branchial ectoparasite of sea bass (Dicentrarchus labrax). At temperatures of 20 °C, 25 ‡C and 30 °C hatching takes place within a few days of laying, whereas at 15 ‡C and 10 ‡C it occurs respectively between the 7th and the 12th day and between the 11th and the 19th day. No hatching has been observed at 5 ‡C. Development is not completely inhibited at 5 ‡C as the eggs can, at least partially, go on maturing and will subsequently hatch as soon as higher temperatures are encountered.
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References
Cognetti-Varriale, A.M., Cecchini, S. and Saroglia, M. (1992) Therapeutic trials against Diplectanum aequans (Monogenea), parasite of sea bass (Dicentrarchus labrax, L.) in intensive farming. Bulletin of the European Association of Fish Pathologists 12, 204–206.
Cognetti-Varriale, A.M., Castelli, A., Cecchini, S. and Saroglia, M. (1993) Study of Diplectanum aequans (Monogenea), parasite of sea bass (Dicentrarchus labrax) in intensive farming. In: Production, Environment and Quality. Bordeaux Aquaculture '92 (eds G. Barnabé and P. Kestemont) European Aquaculture Society, Special Publication 18, Ghent, Belgium, pp. 143–153.
Giavenni, R. (1983) Parassitosi sostenuta da Diplectanum aequans (Wagener, 1857) Diesing 1858 in branzino (Dicentrarchus labrax L.) di allevamento. Riv. It. Piscic. Ittiop. A.XVIII, 4, 167–176.
Gonzales-Lanza, C., Alvarez-Pellitero, P. and Sitja-Bobadilla, A. (1991) Diplectanidae (Monogenea) infestation of sea bass, Dicentrarchus labrax (L.), from the Spanish Mediterranean area. Histopathology and population dynamics under culture conditions. Parasitology Research 77, 307–314.
Kearn, G.C. (1968) The development of the adhesive organs of some diplectanid, tetraonchid and dactylogyrid gill parasites (Monogenea). Parasitology 58, 149–163.
Lambert, A. and Maillard, C. (1974) Parasitisme branchial simultané par deux espèces de Diplectanum Diesing, 1858 (Monogenea, Monopisthocotylea) chez Dicentrarchus labrax (L., 1758) (Téélostéen). Comptes rendus hebdomadaires des Séances, Academie des Sciences, Paris 279D, 1345–1347.
Llewellyn, J. (1957) The larvae of some monogenetic trematode parasites of Plymouth fishes. Journal of the Marine Biological Association of the United Kingdom 36, 243–259.
Oliver, G. (1968) Recherches sur les Diplectanidae (Monogenea) parasites de Téléostéen du Golfe du Lion. I-Diplectaninae Monticelli, 1903. Vie Milieu 19, 95–138.
Oliver, G. (1977) Effet pathogène de la fixation de Diplectanum aequans (Wagener, 1857) Diesing, 1858 (Monogenea, Monopisthocotylea, Diplectanidae) sur les branchies de Dicentrarchus labrax (Linnaeus, 1758) (Pisces, Serranidae). Zeitschrift für Parasitenkunde 53, 7–11.
Paperna, I. and Baudin-Laurencin, F. (1979) Parasitic infections of sea bass, Dicentrarchus labrax, and gilt head sea bream, Sparus aurata, in mariculture facilities in France. Aquaculture 16, 173–175.
Sarti, M. (1988) La profilassi delle ectoparassitosi nell'allevamento delle specie eurialine. Il Pesce 4, 52–54.
Silan, P. (1984) Biologie comparée des populations de Diplectanum aequans et Diplectanum laubieri, Monogènes branchiaux de Dicentrarchus labrax. Thèse 3ème cycle USTL. Montpellier.
Silan, P. and Maillard, C. (1986) Modalités de l'infestation par Diplectanum aequans monogène ectoparasite de Dicentrarchus labrax en aquiculture. Elements d'epidemiologie et de prophylaxie. In: Pathology in Marine Aquaculture (eds C.P. Vivarès, J.R. Bonami and E. Jaspers) European Aquaculture Society, Special Publication 9, Bredene, Belgium, pp. 139–152.
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Cecchini, S. Influence of temperature on the hatching of eggs of Diplectanum aequans, a parasite of sea bass. Aquacult Int 2, 249–253 (1994). https://doi.org/10.1007/BF00123433
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DOI: https://doi.org/10.1007/BF00123433