Faculty of Fisheries, Sher e Kashmir University of Agricultural Sciences and Technology of Kashmir, Rangil, Ganderbal-190 006, Jammu and Kashmir, India
*Corresponding author's e-mail: dimtiyazqayoom@rediffmail.com
Online published on 5 November, 2018.
Present study was carried out to investigate the alterations in the haematological profile of juvenile common carp (Cyprinus carpio var. communis) against acute toxicity of organophosphorous compounds, dimethoate and chlorpyrifos. The fish were divided into 5 different experimental groups for range finding tests on the basis of which the doses for definitive tests were selected. The acute bioassay toxicity tests were carried out in triplicates for 96 hours with a control group run parallel to the experiment. Data obtained was analyzed as per Finney's probit to determine LC50 values. The mean lethal concentration was found 1.1ppm and 3.8ppb respectively for dimethoate and chlorpyrifos. The samples investigated for various haematological parameters such as haemoglobin concentration (Hb), Red blood cell (TEC) and White blood cell (TLC & DLC) counts the heamatocrit (Ht) level, the mean corpuscular volume (MCV) and the mean corpuscular haemoglobin (MCH). Packed cell volume (PCV) and Erythrocyte sedimentation rate (ESR) showed a negative impact of pesticide treated fishes when compared with control. Hb, TEC and Ht were found lower while as ESR and TLC were recorded higher than the control specimens. MCV and MCH showed statistically insignificant differences when compared with control. In DLC, monocyte lymphocyte, neutrophil and basophils were found increased while as eosinophil count was found unaffected than the normal. Studies suggested that the pesticides are potential toxicants for common carps among which chlorpyrifos was found toelicit profound changes intensethan dimethoate.
Common carp, Differential leukocyte count, Haematology, LC50, Pesticides
