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| Effects of Carbaryl on Endocrine System in Serum of Nile Tilapia（GIFT Oreochromis niloticus） |
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| KeyWord:carbaryl; Nile tilapia; endocrine disruption |
| Author Name | Affiliation | | LI Wen-ting | Wuxi Fishery College, Nanjing Agricultural University, Wuxi 214081,China | | QIU Li-ping | Freshwater Fisheries Research Center, Chinese Academy of Fishery Science, Wuxi 214081,China | | LI Zhi-bo | Wuxi Fishery College, Nanjing Agricultural University, Wuxi 214081,China | | LI Dan-dan | Wuxi Fishery College, Nanjing Agricultural University, Wuxi 214081,China | | SONG Chao | Freshwater Fisheries Research Center, Chinese Academy of Fishery Science, Wuxi 214081,China | | CHEN Jia-zhang | Wuxi Fishery College, Nanjing Agricultural University, Wuxi 214081,China
Freshwater Fisheries Research Center, Chinese Academy of Fishery Science, Wuxi 214081,China |
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| Abstract: |
| Carbaryl, the worldwide most used carbamate insecticide, has not only the neurotoxicological effects via inhibiting the activity of acetylcholinesterase, but also the endocrine disrupt effects. Under laboratory conditions, Nile tilapias were exposed to different concentrations of carbaryl（0.16, 0.8, and 2 mg·L-1） for 29 days to examine the interfering effects of carbaryl on their endocrine system. Enzyme-linked immunosorbent assay was used to determine the levels of luteinizing hormone（LH）, follicle-stimulating hormone（FSH）, triiodothyronine（T3） and thyroxine（T4）. Compared with the control, the LH, FSH, T3 and T4 levels under all carbaryl concentrations（0.16 mg·L-1, 0.8 mg·L-1 and 2 mg·L-1） increased gradually with increasing exposure time, greater increases occurred between the 20th to 29th days. During the short-term exposure（<10 days）, however, carbaryl had the strongest endocrine disruption at 0.8 mg·L-1. The LH, FSH, T3 and T4 levels were higher at this concentration than other concentrations. During the long-term exposure（29 days）, however, all hormone levels were the greatest at 2 mg·L-1 carbaryl. These results would advance understanding of the effects of carbamates insecticides on the reproduction, physiology, and neuroendocrine immune of tilapia. |
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