A Stalin, P Suganthi, S Mathivani, K V Broos, V Gokula, A Sadiq Bukhari, H E Syed Mohamed, R K Singhal, P Venu-Babu
P.G. and Research Department of Zoology, National College (Autonomous), Tiruchirappalli, 620001, Tamil Nadu, India.
P.G. and Research Department of Zoology, Jamal Mohamed College, Tiruchirappalli, 620020, Tamil Nadu, India.
Toxicol Rep. 2019 Oct 31;6:1143-1147. doi: 10.1016/j.toxrep.2019.10.021. eCollection 2019.
The present study was designed to evaluate the effect of acute level of Co gamma radiation on fecundity of freshwater prawn . Prawns were exposed to four different dose levels (3, 30, 300 and 3000 mGy) and their reproductive disturbances i.e Gonadosomatic Index (GSI), Egg Clutch somatic Index (ESI), Egg Counts and Egg hatching rates were calculated. The experimental group showed significant reduction in GSI (0.47 ± 0.01) & ESI (1.22 ± 0.08) after exposure to Co gamma radiation. Egg Count (3713 ± 21) and Egg hatching rates (3798 ± 11) were significantly reduced in all irradiated groups. The number of dead larva increased with the increasing level of doses. With the increase in dosage level, the gonad and egg clutch weight were decreased which likely lead to reduced number of eggs. Our results proved that even low level of ionizing radiation (Co) affects the fecundities of freshwater crustacean .
本研究旨在评估钴γ射线急性照射水平对淡水虾繁殖力的影响。将虾暴露于四种不同剂量水平（3、30、300和3000毫戈瑞）下，并计算其生殖干扰指标，即性腺指数（GSI）、卵块体细胞指数（ESI）、卵数和孵化率。实验组在暴露于钴γ射线后，GSI（平均0.47±0.01）和ESI（平均1.22±0.08）显著降低。所有辐照组的卵数（平均3713±21）和孵化率（平均3798±11）均显著降低。随着剂量水平的增加，死亡幼虫数量增加。随着剂量水平的升高，性腺和卵块重量下降，这可能导致卵的数量减少。我们的结果证明，即使是低水平的电离辐射（钴）也会影响淡水甲壳类动物的繁殖力。
