Cecchini S ;

Aquaculture International vol. 2 (4)   pp. 249-253, 1994

Dip. Patol. Anim., Profilassi Ig. Alimenti, Fac. Med. Vet., Univ. Pisa, Viale dell Piagge 2, 56127 Pisa, Italy

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 degree C, 25 degree C and 30 degree C hatching takes place within a few days of laying, whereas at 15 degree C and 10 degree 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 degree C as the eggs can, at least partially, go on maturing and will subsequently hatch as soon as higher temperatures are encountered

Parasites ;  Hatching ;  Temperature effects ;  Fish culture ;  Dicentrarchus labrax ;  Diplectanum aequans ;