title: Parasitic infection alters haematology and immunity parameters of common carp,Cyprinus carpio, Linnaeus, 1758.
abstract: The present study was conducted to investigate the effects of parasite infection on haematological parameters of common carp,Cyprinus carpio. To this end, fish with same age were sampled from a warm water fish farm. After fish sampling, fish were transferred to lab for parasite study. Parasite incidence percent and density were calculated for two population carps. After parasite study, to investigate the haematological parameters, the blood sampling was carried out from two group fish i.e. infected (n = 20) and non-infected fish (n = 20). According our results, totally three parasite species were identified includingDactylogyrussp.,Trichodinasp. andLernaea cyprinacea. Significant differences were observed between infected and non-infected fish (P< 0.05). In this regard, the values of haematocrit, haemoglobin and red blood cell were lower in infected fish than healthy individuals (P< 0.05). In contrast, number of white blood cells (WBCs) were higher in infected fish compared to non-infected fish (P< 0.05). In conclusion, our study reveals that the parasite infection was responsible for altering the haematology of common carp. Increased number of WBC may be in relation to the defense mechanism and immunological responses against parasites.
authors.affiliation: Department of Aquaculture and Fisheries, Persian Gulf University, Bushehr, Iran.
authors.forename: Faraz
authors.initials: F
authors.lastname: Panjvini
authors.affiliation: Graduate of Gorgan University of Agricultural Sciences and Natural Resources, Gorgan, Iran.
authors.forename: Safoura
authors.initials: S
authors.lastname: Abarghuei
authors.affiliation: Department of Fishery, College of Natural Resources, Lahijan Branch, Islamic Azad University, P.O. Box 1616, Lahijan, Iran.
authors.forename: Hossein
authors.initials: H
authors.lastname: Khara
authors.affiliation: Shahid Beheshti Sturgeon Rearing and Propagation Center, Rasht, Iran.
authors.forename: Hossein Mohammadi
authors.initials: HM
authors.lastname: Parashkoh
keywords: Common carp; Haematology; Immunity; Parasite