Park Jun-Kyu, Do Yuno
Department of Biological Sciences, Kongju National University, Gongju 32588, Korea.
Animals (Basel). 2020 Sep 20;10(9):1698. doi: 10.3390/ani10091698.
Many freshwater ecosystems are becoming more saline, and amphibians, which have permeable skin, are sensitive to this change. We studied the physiological responses to high salinity and recovery from saline exposure in adult frogs (). Frogs that experienced severe salinity were exposed to saline conditions for 6 days, while those in the moderate group were exposed to saline conditions for 40 days, followed by a recovery period in freshwater for 20 days. Our data showed that during exposure to saline conditions of severe and moderate groups, serum electrolytes increased, protein concentrations decreased, and creatinine, an indicator of renal function, sharply increased. However, renal tissue sampled after exposure did not show renal dysfunction. In addition, serum components that changed during exposure to salinity returned to their initial values during the recovery period. Thus, adult anurans can be resilient, to some extent, to saline conditions in habitats that experience either rapid or slow salinity changes.
许多淡水生态系统正变得盐度更高，而皮肤具有渗透性的两栖动物对这种变化很敏感。我们研究了成年青蛙对高盐度的生理反应以及从盐暴露中恢复的情况。经历严重盐度的青蛙在盐环境中暴露6天，而中度组的青蛙在盐环境中暴露40天，随后在淡水中恢复20天。我们的数据表明，在严重和中度组暴露于盐环境期间，血清电解质增加，蛋白质浓度降低，而肾功能指标肌酐急剧增加。然而，暴露后采集的肾脏组织并未显示出肾功能障碍。此外，在盐度暴露期间发生变化的血清成分在恢复期恢复到初始值。因此，成年无尾目动物在一定程度上能够适应栖息地中盐度快速或缓慢变化的盐环境。
