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DONNEES SUR L'INFLUENCE DE CERTAINS FACTEURS DE 
MILIEU SUR L'ETAIT DE SANTE DE TRUITE ARC-EN-CIEL
(Salmo gairdneri irideus) CULTIVEE EN EAU DE MER 


Elena Dumitrescu, Victoria Smocov, Irina Voicu et
Elena Ghitescu 
Institut Roumain de Recherches Marines Constanta 


Abstract
Considering the special importance of the helth conditions
of the rainbow trout (Salmo gairdneri irideus) cultived in 
marine waters, we have determined the influence of several
physical and chemical factors on the fish health for the 
period 1982-1985. The evolution of the helth. The evolution
of the helth state has been followed by the seasonal blood
modifications. The data got have revealed a better helth
conditions in spring, when the values of the physical and
chemical factors were optimum for the rainbow trout growth
and the fish had an intense feeding. In summer time, when
the water temperature exceeded 22 grade C and the oxygen
content was below 4 ml/l, the helth condition was affected
and decrease of the red cells, hemoglobin and serous proteins
was noted. In those conditions there Aeromonas hydrophila,
Vibrio parahaemoliticus and Vibrio anguillarum which exist
in marine waters all the year round.