Surface structures of gill, scale and erythrocyte of Anabas testudineus exposed to sublethal concentration of cypermethrin.
The present study was undertaken to assess the toxicity of sublethal concentrations (0.015, 0.030 and 0.045 ppm) of cypermethrin on the gills, scales and erythrocytes of Anabas testudineus for 21 days. The morphological changes on the gills, scales and erythrocytes of the A. testudineus were observed using scanning electron microscope (SEM). The SEM studies on all the three treated groups revealed several kinds of gills, scales and erythrocytes alterations and modifications with abnormal morphology. Gill alterations included highly active mucous cells, epithelial hyperplasia, fusion of secondary lamellae and epithelial lifting. The scales showed damaged lepidonts. Abnormal erythrocytes (shrunken cells), oozed out cytoplasmic content and lobopodial projections were observed in the erythrocytes of fish after exposure to cypermethrin.
Loyola College, Department Zoology, Environmental Science and Biotechnology Research Unit, Madras 600034, Tamil Nadu, India.
Velmurugan
V
Babu
Loyola College, Department Zoology, Environmental Science and Biotechnology Research Unit, Madras 600034, Tamil Nadu, India.
Selvanayagam
S
Mariadoss
Dicle University, Faculty Pharmacy, Department of Pharmaceutical Toxicology, TR-21280 Diyarbakir, Turkey. Electronic address: ecengiz@dicle.edu.tr.
Cengiz Elif
CE
Ipek
Dicle University, School of Natural and Applied Sciences, Department Biology, TR-21280 Diyarbakir, Turkey.
Bilici
B
Serbest
Dicle University, Faculty Science, Department Biology, Section Hydrobiology, TR-21280 Diyarbakir, Turkey.
Satar
S
Ali
D000818:Animals; D004912:Erythrocytes / Q000187:drug effects* / Q000648:ultrastructure; D005399:Fishes; D005880:Gills / Q000187:drug effects* / Q000648:ultrastructure; D007306:Insecticides / Q000633:toxicity*; D008855:Microscopy, Electron, Scanning; D011722:Pyrethrins / Q000633:toxicity*; D012867:Skin / Q000187:drug effects* / Q000648:ultrastructure; D014874:Water Pollutants, Chemical / Q000633:toxicity
D007306:Insecticides; D011722:Pyrethrins; D014874:Water Pollutants, Chemical; C017160:cypermethrin
Cypermethrin; Erythrocyte; Fish; Gill; SEM; Scale