The anaesthetic effects of eugenol on Penaeus monodon were investigated at the different eugenol concentrations (60, 110, 160 and 210 mg/L), water temperature (21, 26 and 31°C), air exposure time (3, 6, 9 and 12 min) and body weight (2.62 ± 0.27, 6.34 ± 0.36 and 11.43 ± 0.33 g). The anaesthesia and recovery time were recorded. The results showed that the anaesthesia time of the shrimp decreased with the increase in the eugenol concentration and water temperature, and the recovery time increased with the increase of the eugenol concentration and the decrease of water temperature. Under the same eugenol concentrations, the recovery time increased with the increase of air exposure time and body weight. Under the eugenol concentration range of 60–210 mg/L, the recovered rate was 100%. The results indicated that eugenol is a safe and efficient anaesthetic for P. monodon.

中文翻译：

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不同浓度和温度的丁香酚对黑虎虾的麻醉作用

丁香油酚对斑节对虾的麻醉作用在不同的丁香酚浓度（60、110、160和210 mg / L），水温（21、26和31°C），空气暴露时间（3、6、9和12分钟）和体重（2.62）下进行了研究±0.27、6.34±0.36和11.43±0.33克）。记录麻醉和恢复时间。结果表明，虾的麻醉时间随着丁香酚浓度和水温的升高而降低，恢复时间随着丁香酚浓度的增加和水温的降低而增加。在相同丁香酚浓度下，恢复时间随着空气暴露时间和体重的增加而增加。在丁子香酚浓度为60–210 mg / L的情况下，回收率为100％。结果表明丁子香酚是一种安全有效的斑节对虾麻醉药。