University of Gujrat, Faculty of Science, Department of Zoology, Punjab, Pakistan.
The University of Western Australia, School of Human Sciences, Perth, Australia.
Braz J Biol. 2021 Sep 6;83:e248842. doi: 10.1590/1519-6984.248842. eCollection 2021.
Acetylcholinesterase (AChE) activity levels can be used as an indicator for AChE inhibition due to pesticide poisoning in bird species. We assessed the comparative brain cholinesterase (AChE) activity level of five bird species inhabiting pesticide exposed croplands and Protected Area i.e. Deva Vatala National Park (DVNP), Bhimber by using a spectrophotometric method. AChE activity levels ranged from 56.3 to 85.9 µmol/min/g of brain tissue of birds representing DVNP. However, AChE activity levels ranged from 27.6 to 79.9 µmol/min/g of brain tissue of birds representing croplands. AChE activity levels observed in Jungle babbler, Common babbler, and Red-vented bulbul showed significant differences (P < 0.05) at two sites. However, White wagtail and Black drongo demonstrated non-significant differences (P > 0.05). Maximum inhibition was recorded in Jungle babbler (53%) followed by Common babbler (35%), Red-vented bulbul (18%), White wagtail (15%), and Black drongo (7%). The brain cholinesterase inhibition levels under-protected ecosystems (DVNP, Bhimber) and agricultural landscape suggest insecticidal contamination and its impact on avifauna diversity. The study also emphasizes on the importance of pesticide-free zones to protect the biodiversity of birds.
乙酰胆碱酯酶（AChE）活性水平可作为鸟类因农药中毒而导致 AChE 抑制的指标。我们采用分光光度法评估了栖息在受农药污染农田和保护区（即德瓦瓦塔拉国家公园 [DVNP]、比姆伯尔）的 5 种鸟类的比较脑胆碱酯酶（AChE）活性水平。代表 DVNP 的鸟类的 AChE 活性水平范围为 56.3 至 85.9 µmol/min/g 脑组织。然而，代表农田的鸟类的 AChE 活性水平范围为 27.6 至 79.9 µmol/min/g 脑组织。在两个地点，Jungle babbler、Common babbler 和 Red-vented bulbul 的 AChE 活性水平观察到显著差异（P < 0.05）。然而，White wagtail 和 Black drongo 表现出非显著差异（P > 0.05）。Jungle babbler（53%）的最大抑制率最高，其次是 Common babbler（35%）、Red-vented bulbul（18%）、White wagtail（15%）和 Black drongo（7%）。受保护程度较低的生态系统（DVNP、Bhimber）和农业景观中的脑胆碱酯酶抑制水平表明存在杀虫剂污染及其对鸟类多样性的影响。该研究还强调了无农药区对于保护鸟类生物多样性的重要性。
