Effect of Methomyl on Growth, Antioxidant System of GIFT (Oreochromis niloticus), and Residue in the Presence of Water Spinach (Ipomoea aquatica Forsk)

Xiaojun Jing; Yao Zheng; James P Mulbah; Jiazhang Chen; Gangchun Xu

doi:10.1155/2022/7434426

Effect of Methomyl on Growth, Antioxidant System of GIFT (Oreochromis niloticus), and Residue in the Presence of Water Spinach (Ipomoea aquatica Forsk)

Int J Anal Chem. 2022 Aug 12:2022:7434426. doi: 10.1155/2022/7434426. eCollection 2022.

Authors

Xiaojun Jing¹, Yao Zheng^{1

2}, James P Mulbah², Jiazhang Chen^{1

2}, Gangchun Xu^{1

2}

Affiliations

¹ Key Laboratory of Integrated Rice-Fish Farming Ecology, Ministry of Agriculture and Rural Affairs, Freshwater Fisheries Research Center (FFRC), Chinese Academy of Fishery Sciences (CAFS), Beijing, China.
² Wuxi Fishery College, Nanjing Agricultural University, Wuxi Jiangsu 214081, China.

Abstract

This study was conducted to investigate the effect of methomyl (MET) on the growth and antioxidant system of GIFT (5.28 ± 0.12, n = 180) in the presence of water spinach (Ipomoea aquatica) aas a floating bed. Four treatment groups have been established, named control (0), 2, 20, and 200 μg/L MET. Results showed that at moderate temperatures such as 25°C to 30°C, tilapia's feed consumption increased and body weight improved. SOD, CAT, and GSH in the liver of GIFT indicated the significant increase under MET exposure. MET reduced the growth rate of GIFT, and water spinach reduced part of the water quality indexes in the MET (<200 μg/L) groups. Water spinach altered GIFT's hepatic oxidation system to some extent and effectively absorbed MET in water and transferred it to itself, and the degradation time was lower than the dietary standard time which termed as 15-20 days. Growing water spinach in farmed waters partially decomposes MET and prevents it from causing damage to GIFT's liver.