Hervant F, Mathieu J
Laboratoire d'hydrobiologie et écologie souterraines, URA-CNRS 1974, Villeurbanne, France.
C R Acad Sci III. 1995 May;318(5):585-92.
Locomotory and ventilatory responses to severe hypoxia and subsequent recovery were investigated in 3 amphipod crustaceans: 2 hypogean species (1 interstitial species Niphargus rhenorhodanensis and 1 karstic species N. virei) and 1 epigean species (Gammarus fossarum), and in an epigean population of 1 isopod crustacean (Asellus aquaticus). These species displayed respectively 46.7 h, 52.1 h, 6.3 h and 19.7 h lethal times for 50% of the population (LT50) values for anoxic survival. The aim of this study was to determine why the hypogean species displayed a survival time during severe hypoxia longer than that of Gammarus, Asellus and most other epigean crustaceans, and to better understand the ecological problems concerning Niphargus survival and perennation modalities in subterranean habitats which very often present hypoxic conditions during a hydrological cycle. The high resistance to severe hypoxia of hypogean animals partly results from an adaptation to the limitation of energetic expenditure linked to locomotion and ventilation in anaerobiosis, and from a decrease of general metabolism in severe hypoxia.
研究了3种甲壳纲十足目动物对严重缺氧及随后恢复的运动和呼吸反应：2种地下物种（1种土壤间隙物种莱茵河尼氏钩虾和1种喀斯特物种维氏尼氏钩虾）和1种地表物种（溪钩虾），以及1种地表等足目甲壳动物（普通等足虫）的一个种群。这些物种在缺氧生存的50%种群致死时间（LT50）值分别为46.7小时、52.1小时、6.3小时和19.7小时。本研究的目的是确定为什么地下物种在严重缺氧期间的存活时间比溪钩虾、普通等足虫和大多数其他地表甲壳纲动物更长，并更好地理解与尼氏钩虾在地下生境中的生存和多年生方式相关的生态问题，这些生境在水文循环期间经常出现缺氧状况。地下动物对严重缺氧的高抗性部分源于对厌氧状态下与运动和呼吸相关的能量消耗限制的适应，以及严重缺氧时一般代谢的降低。
