Comparing thermal tolerance across contrasting landscapes: first steps towards understanding how landscape management could modify ectotherm thermal tolerance

摘要: 1. Insects are highly dependent on ambient temperatures to ensure their biological functions. Their persistence in the environment and resistance unfavourable governed by physiological thermal tolerance. 2. Global change extends beyond climatic conditions encompass modifications landscape. Studies of climate landscape composition effects ecosystem services, such as control, commonly performed independently. Moreover, coarse scales not always relevant when assessing change's impacts ectotherms. We aimed better understand ecological relationships that may exist between microclimatic variation insect tolerance across a gradient. 3. To determine how impact tolerance, parasitic wasps (Hymenoptera: Braconidae: Aphidiinae) aphids were sampled along gradient from ‘closed’ ‘open’ habitats. Sampling was during winter 2013/14 spring 2014 cereal fields Brittany, France. Meteorological data recorded this gradient. 4. First, our results show an influence local microclimate. Additionally, parasitoids open landscapes had higher low temperatures, leading costs, compared with closed landscapes. This trend stronger than spring. 5. These have numerous implications context change, suggesting targeted management practices could create sheltered areas reduce costs promote control agents.