Sublethal effects of the herbicide thiobencarb on fecundity, histopathological and biochemical changes in the African catfish (Clarias gariepinus)
Publish place: Iranian Journal of Fisheries Sciences، Vol: 19، Issue: 3
Publish Year: 1399
نوع سند: مقاله ژورنالی
زبان: English
View: 95
This Paper With 26 Page And PDF Format Ready To Download
- Certificate
- من نویسنده این مقاله هستم
استخراج به نرم افزارهای پژوهشی:
شناسه ملی سند علمی:
JR_JIFRO-19-3_039
تاریخ نمایه سازی: 27 بهمن 1400
Abstract:
Fishes have been widely documented as useful bioindicator for ecotoxicological studies because of their differential sensitivity to pollution. Thus, the present study was carried out to determine the sub-lethal effects of commercial herbicide thiobencarb (CITRON®, ۵۰EC) on the African catfish (Clarias gariepinus). Females fish were exposed to sub-lethal concentration of thiobencarb (½ LC۵۰, ۰.۷۲ ppm) for ۳, ۹ and ۱۵ days. Severe abnormality in the swimming behavior was observed in fish groups exposed for ۹ and ۱۵ days. Adverse effects on the ovary and liver weights were observed. The absolute fecundity was significantly decreased by all thiobencarb-treatments, for which the lowest value was observed at ۱۵-day treatment in comparison with that of the control. A significant decline (p<۰.۰۱) in the activities of serum aspartate aminotransferase (AST) and alanine aminotransferase (ALT) was observed in fish as the exposure period continued as compared to the control. Similarly, glucose and total protein levels were also significantly declined (p<۰.۰۱) with the exposure period. Histopathological changes in the liver tissue of fish exposed to thiobencarb were characterized by necrosis, changes in nuclear shape, formation of vacuoles and atrophy of hepatocytes. The ovary of fish exposed to thiobencarb for ۱۵ days showed atretic vitellogenic oocytes and proliferation of follicular cells as well as inflammatory cells infiltration. These results indicate that thiobencarb is toxic and has the potential to impair on the physiological activities in African catfish. Therefore, the use of thiobencarb should be strongly controlled and carefully monitored to minimize its negative impacts on the aquatic ecosystems.
Keywords:
Authors
N.S. Elias
Fish Diseases Department, Animal Health Research Institute, ARC, Dokki, Egypt
G.E. Abouelghar
Faculty of Agriculture, Department of Pesticides, Menoufia University, Egypt
H.M. Sobhy
Institute of African Research and Studies - Department of Natural Resources. Cairo University, Egypt
H.M. El Meniawy
Department of Pathology, Faculty of Veterinary Medicine, Cairo University, Egypt
E.G. Elsaiedy
General Authority for Fish Resources Development, Nasr City, Egypt
مراجع و منابع این Paper:
لیست زیر مراجع و منابع استفاده شده در این Paper را نمایش می دهد. این مراجع به صورت کاملا ماشینی و بر اساس هوش مصنوعی استخراج شده اند و لذا ممکن است دارای اشکالاتی باشند که به مرور زمان دقت استخراج این محتوا افزایش می یابد. مراجعی که مقالات مربوط به آنها در سیویلیکا نمایه شده و پیدا شده اند، به خود Paper لینک شده اند :