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首页> 外文期刊>Applied Soil Ecology >Stress response in terrestrial isopods: A comparative study on glycaemia
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Stress response in terrestrial isopods: A comparative study on glycaemia

机译：陆地等妇女的应激反应：糖类血症的比较研究

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摘要

Stressors are omnipresent in the environment and trigger specific physiological and/or behavioural responses that remain relatively less known in invertebrates. Among the parameters used to quantify the impact of stress on physiology, the circulating level of glucose is commonly used in aquatic crustacean species. Terrestrial isopods are small crustaceans commonly used as bioindicators of soil quality; however, their response to environmental stressors remains poorly documented. In laboratory conditions, we investigated how different stressors influence the physiological response of two terrestrial isopod species. Thus, we exposed Armadillidium vulgare and Porcellio dilatatus to a series of both acute (physical) and chronic (temperature, social isolation, and exposure to herbicide) stressors that mimic potentially stressful situations encountered in their environment. Our results revealed that, for both species, glycaemia is not impacted by thermic shock (1 h at 4 degrees C), mechanical disturbances (1 min of shaking or upside-down motion) or social isolation (4 weeks) at the population level. Nevertheless, we observed a significantly higher sensitivity in male P. dilatatus exposed to upside-down movements and in males of both species exposed to social isolation. Acute (96 h) and chronic (21 days) exposure to glyphosate (1.8-2.5 kg.ha(-1)) did not impact glycaemia levels in A. vulgare. However, at both tested doses, individuals exposed to glyphosate for 25 days and subjected to an additional stressor (haemolymph sampling at 96 h) had significantly higher glycaemia in comparison to their control. Survival was also impacted by the joint application of chronic glyphosate exposure and intermediate haemolymph sampling. We conclude that glucose is a potentially good indicator to study the stress response of terrestrial isopods. Additional studies for this parameter, combined with other physiological indicators, are needed to better characterize this response.
机译：压力源在环境中是无脊椎动物中仍然相对较少的特定生理和/或行为应激。在用于量化应力对生理学影响的参数中，葡萄糖的循环水平通常用于水生甲壳类动物。陆地等水稻是小型甲壳类动物，常用为土壤质量的生物indicer;但是，他们对环境压力源的回应仍然有穷的记录。在实验室条件下，我们调查了不同的压力源如何影响两个陆地等i等级物种的生理反应。因此，我们将Armadillidium Vulgare和Porcellio Dilatatus暴露于一系列急性（物理）和慢性（温度，社会分离和暴露于除草剂）的压力源，这些压力源是在其环境中遇到的潜在压力情况。我们的研究结果表明，对于两种物种，糖血症不会受到热休克（4摄氏度1小时）的影响，人口水平的机械干扰（摇动或倒置或倒置运动的1分钟）或社会隔离（4周）。然而，我们观察到暴露于颠倒运动的男性P. dilatatus的敏感性显着更高。急性（96小时）和慢性（21天）暴露于草甘膦（1.8-2.5 kg.ha（-1））没有影响A.Vulgare的糖血水平。然而，在两种测试剂量中，暴露于草甘膦25天并进行另外的压力源（96小时的毒性映像）的个体与其对照相比具有显着更高的血糖症。生存率也受到慢性草甘膦暴露和中间毒性淋巴样疗法的关节应用。我们得出结论，葡萄糖是研究陆地等泡沫的应激反应的潜在良好指标。对于该参数的额外研究，与其他生理指标相结合，以更好地表征这种反应。

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