Abstract
Morbidity rate with severity of infection was recorded in 405 carp fish ,124 in the first station,143 in the
station and 138 in the third station in the fish laboratory in college of Agriculture ,theqar university, The
results revealed presence of 14 type of external parasites,tow types of them are recorded at the first
time in carp fish in Iraq asahost for which, included asingle type of protozoa which carry cilia
(Ichthyophthirius multifiliis Fouquet, 1876). the study recorded 13 type of monogenodea of single origin
and it was noticed appositive relationship between water temperature and the increased of morbidity
rate and severity of infection by some external parasite but there was a reverse relation between the
increased concentration of dissolved salts and morbidity and severity of infection with parasites and it
was significant1(p<0.01)1during1the1studied1period. >
station and 138 in the third station in the fish laboratory in college of Agriculture ,theqar university, The
results revealed presence of 14 type of external parasites,tow types of them are recorded at the first
time in carp fish in Iraq asahost for which, included asingle type of protozoa which carry cilia
(Ichthyophthirius multifiliis Fouquet, 1876). the study recorded 13 type of monogenodea of single origin
and it was noticed appositive relationship between water temperature and the increased of morbidity
rate and severity of infection by some external parasite but there was a reverse relation between the
increased concentration of dissolved salts and morbidity and severity of infection with parasites and it
was significant1(p<0.01)1during1the1studied1period. >
Keywords
CAGES
FISH Cyprinus carpio