Effects of 60Co gamma irradiation on behavior and gill histoarchitecture of giant fresh water prawn Macrobrachium rosenbergii (DE MAN)

• Published in: Ecotoxicology and environmental safety Vol. 92; pp. 155 - 160
• Main Authors: Stalin, A., Broos, K.V., Sadiq Bukhari, A., Syed Mohamed, H.E., Singhal, R.K., Venu-babu, P.
• Format: Journal Article
• Language: English
• Published: San Diego, CA Elsevier Inc 01-06-2013; Elsevier
• Subjects: 60Co Gamma radiation; adults; Animal, plant and microbial ecology; Applied ecology; aquatic environment; behavior change; Biological and medical sciences; Ecotoxicology, biological effects of pollution; epithelium; food intake; Fundamental and applied biological sciences. Psychology; gamma radiation; General aspects; Gill; gills; hemocytes; Histology; irradiation; Macrobrachium rosenbergii; mortality; pollution; Prawn Macrobrachium rosenbergii; seizures; shrimp; swimming; Histology; Gill; Prawn Macrobrachium rosenbergii; 60Co Gamma radiation; Ecotoxicology; Toxicity; Macrobrachium rosenbergii; Macrura; Crustacea; Gamma irradiation; Gamma radiation; Arthropoda; Co Gamma radiation; Environment; Decapoda; Behavior; Invertebrata; Shrimp
• ISSN: 0147-6513; 1090-2414
• DOI: 10.1016/j.ecoenv.2013.03.015

Present study was designed to observe the effects of 60Co gamma radiation in behavioral and histological changes in the gills of giant fresh water prawn Macrobrachium rosenbergii. The adult prawns were irradiated with four different dose levels (3mGy, 30mGy, 300mGy and 3000mGy) and the control group (without irradiation) was maintained separately. Behavioral changes like hyperactivity, loss of balance, reduced swimming rate, slower rate of food intake and convulsions were observed in higher dose levels of 300mGy and 3000mGy. The histological alterations such as accumulated haemocytes in haemocoelic spaces, abnormal gill tips, lifted lamellar epithelium, swollen and fused lamellae, hyperplasic, necrotic, clavate–globate and complete disorganization of lamellae were observed in 60Co gamma irradiated prawns. Significantly more considerable histological alterations were observed in the highest dose level of 3000mGy, but no mortality was evidenced. This study serves as biomonitoring tool to assess the radiation pollution in the aquatic environment.
•60Co exposures effect the behavior and histology of gill of prawn M. rosenbergii.•Alteration in the gill structure does not affect the physiology or lethality.•Self regulating mechanisms might be the reason for preventing from the lethality.•High dose increases the adverse behavior pattern and alteration of gill histology.