Exposure to pesticides used in rice farming (bentazone, chlorantraniliprole and tebuconazole) affects biochemical biomarkers and hepatic histopathological parameters of hammertoad tadpoles (Boana faber)

IF 3.9 3区 环境科学与生态学 Q2 BIOCHEMISTRY & MOLECULAR BIOLOGY Comparative Biochemistry and Physiology C-toxicology & Pharmacology Pub Date : 2024-06-15 DOI:10.1016/j.cbpc.2024.109960
Daiane Bitschinski, Aline Warsneski, Camila Fatima Rutkoski, Gustavo Henrique Pereira Gonçalves, Luís Olímpio Menta Giasson, Rony Paolin Hasckel, Nicole Grasmuk Israel, Elizia Barbosa da Silva, Claudia Almeida Coelho de Albuquerque, Luíza Lã, Thiago Caique Alves, Fernando de Campos Guerreiro, Eduardo Alves de Almeida
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Abstract

Pesticides used in rice cultivation can cause negative health effects to non-target organisms representative of natural biodiversity. In this context, the present study aimed to investigate the occurrence of pesticides in surface waters from a river that flows in the middle of a rice farming-dominated area. We were also interested in evaluate biochemical and histological effects caused by exposure (16 d) to the lower and higher concentrations of the main found herbicide (bentazone, BTZ), insecticide (chlorantraniliprole, CTP) and fungicide (tebuconazole, TBZ), isolated or mixed, in Boana faber tadpoles. No significant differences were observed in the development of the animals. Tadpoles exposed to the herbicide BTZ showed higher hepatic levels of malondialdehyde (MDA). In animals exposed to CTP, MDA levels were lower than controls. Animals exposed to the fungicide TBZ showed higher hepatic activity of glutathione S-transferase and carboxylesterase (CbE), as well as higher levels of carbonyl proteins and MDA. Animals exposed to Mix showed higher activity in CbE and glucose-6-phosphate dehydrogenase activity in the liver, as well as higher levels of MDA. In the brain and muscle of tadpoles exposed to Mix, acetylcholinesterase activity was higher. Histological changes were also observed in pesticide-exposed animals, such as increased occurrence of melanomacrophages, inflammatory infiltrates and congestion. Our data evidences the contamination of natural aquatic environments by rice pesticides, and the adverse effects of main ones in B. faber tadpoles, which suggests the contribution of pesticides derived from rice cultivation to the degradation of local biodiversity health.

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水稻种植中使用的农药(苯达唑酮、氯虫苯甲酰胺和戊唑醇)会影响槌头蝌蚪(Boana faber)的生化生物标志物和肝组织病理学参数。
水稻种植中使用的农药会对代表自然生物多样性的非目标生物的健康造成负面影响。在这种情况下,本研究旨在调查流经水稻种植区的一条河流的地表水中农药的含量。我们还想评估蝌蚪单独或混合接触(16 天)低浓度和高浓度的主要除草剂(苯达松,BTZ)、杀虫剂(氯虫苯甲酰胺,CTP)和杀菌剂(戊唑醇,TBZ)后所产生的生化和组织学影响。在动物的发育过程中没有观察到明显的差异。接触除草剂 BTZ 的蝌蚪肝脏中丙二醛(MDA)含量较高。暴露于 CTP 的动物的 MDA 水平低于对照组。接触杀真菌剂 TBZ 的动物显示谷胱甘肽 S 转移酶和羧基酯酶 (CbE) 的肝脏活性较高,羰基蛋白和 MDA 水平也较高。接触 Mix 的动物肝脏中 CbE 和葡萄糖-6-磷酸脱氢酶活性较高,MDA 水平也较高。在接触过 Mix 的蝌蚪的大脑和肌肉中,乙酰胆碱酯酶活性较高。暴露于农药的动物还出现了组织学变化,如黑色素细胞增多、炎症浸润和充血。我们的数据证明了水稻农药对自然水生环境的污染,以及主要农药对蝌蚪的不利影响,这表明水稻种植产生的农药导致了当地生物多样性健康的退化。
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来源期刊
CiteScore
7.50
自引率
5.10%
发文量
206
审稿时长
30 days
期刊介绍: Part C: Toxicology and Pharmacology. This journal is concerned with chemical and drug action at different levels of organization, biotransformation of xenobiotics, mechanisms of toxicity, including reactive oxygen species and carcinogenesis, endocrine disruptors, natural products chemistry, and signal transduction with a molecular approach to these fields.
期刊最新文献
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