Ditrich Tomáš, Janda Václav, Vaněčková Hana, Doležel David
Faculty of Education, University of South Bohemia, Branisovska 31a, 37005 Ceske Budejovice, Czech Republic.
Biology Center, Academy of Sciences of the Czech Republic, 37005 Ceske Budejovice, Czech Republic.
Insects. 2018 Oct 19;9(4):144. doi: 10.3390/insects9040144.
Cold tolerance is often one of the key components of insect fitness, but the association between climatic conditions and supercooling capacity is poorly understood. We tested 16 lines originating from geographically different populations of the linden bug for their cold tolerance, determined as the supercooling point (SCP). The supercooling point was generally well explained by the climatic conditions of the population's origin, as the best predictor-winter minimum temperature-explained 85% of the average SCP variation between populations. The supercooling capacity of is strongly correlated with climatic conditions, which support the usage of SCP as an appropriate metric of cold tolerance in this species.
耐寒性通常是昆虫适应性的关键组成部分之一，但气候条件与过冷却能力之间的关联却鲜为人知。我们测试了来自地理上不同的椴树蝽种群的16个品系的耐寒性，将其确定为过冷却点（SCP）。过冷却点通常能很好地由种群起源地的气候条件来解释，因为最佳预测因子——冬季最低温度——解释了种群间平均SCP变化的85%。椴树蝽的过冷却能力与气候条件密切相关，这支持了将SCP用作该物种耐寒性合适指标的做法。
