Wharton D A, Goodall G, Marshall C J
Departments of Zoology, University of Otago, P.O. Box 56, Dunedin, New Zealand.
Cryo Letters. 2002 Jan-Feb;23(1):5-10.
The ability of the Antarctic nematode Panagrolaimus davidi to survive a short-term freezing stress depended upon the rate of freezing of its surroundings, measured as the duration of the sample exotherm. The freezing rate increased as the sample volume and freezing temperature decreased and resulted in fewer nematodes surviving. This appears to be due to the greater risk of physical damage by ice crystal growth at high freezing rates. Once frozen the nematodes will then survive exposure to lower temperatures. The environment of the nematode is likely to produce the slow rate of freezing of its surroundings that is necessary for its survival.
南极线虫戴维泛裸囊线虫在短期冷冻胁迫下的存活能力取决于其周围环境的冷冻速率，该速率以样品放热持续时间来衡量。随着样品体积和冷冻温度降低，冷冻速率增加，存活的线虫数量减少。这似乎是由于在高冷冻速率下冰晶生长造成物理损伤的风险更大。一旦冷冻，线虫随后将能在更低温度下存活。线虫所处的环境可能会使其周围环境产生缓慢的冷冻速率，而这是其生存所必需的。
