Facing the heat: Thermoregulation and behavior of lowland species of a cold-dwelling butterfly genus, Erebia

0464688 - BC 2017 RIV US eng J - Článek v odborném periodiku
Klečková, Irena - Klečka, Jan
Facing the heat: Thermoregulation and behavior of lowland species of a cold-dwelling butterfly genus, Erebia.
PLoS ONE. Roč. 11, č. 3 (2016), č. článku e0150393. ISSN 1932-6203. E-ISSN 1932-6203
Grant CEP: GA ČR(CZ) GP14-10035P; GA ČR(CZ) GA14-33733S
Institucionální podpora: RVO:60077344
Klíčová slova: climate-change * Erebia * local adaptation
Kód oboru RIV: EH - Ekologie - společenstva
Impakt faktor: 2.806, rok: 2016
http://journals.plos.org/plosone/article?id=10.1371/journal.pone.0150393

Understanding the potential of animals to immediately respond to changing temperatures is imperative for predicting the effects of climate change on biodiversity. Ectothermic animals, such as insects, use behavioural thermoregulation to keep their body temperature within suitable limits. It may be particularly important at warm margins of species occurrence, where populations are sensitive to increasing air temperatures. In the field, we studied thermal requirements and behavioural thermoregulation in low-altitude populations of the Satyrinae butterflies Erebia aethiops, E. euryale and E. medusa. We compared the relationship of individual body temperature with air and microhabitat temperatures for the low-altitude Erebia species to our data on seven mountain species, including a high-altitude population of E. euryale, studied in the Alps. We found that the grassland butterfly E. medusa was well adapted to the warm lowland climate and it was active under the highest air temperatures and kept the highest body temperature of all species. Contrarily, the woodland species, E. aethiops and a low-altitude population of E. euryale, kept lower body temperatures and did not search for warm microclimates as much as other species. Furthermore, temperature-dependence of daily activities also differed between the three low-altitude and the mountain species. Lastly, the different responses to ambient temperature between the low-and high-altitude populations of E. euryale suggest possible local adaptations to different climates. We highlight the importance of habitat heterogeneity for long-term species survival, because it is expected to buffer climate change consequences by providing a variety of microclimates, which can be actively explored by adults. Alpine species can take advantage of warm microclimates, while low-altitude grassland species may retreat to colder microhabitats to escape heat, if needed.
Trvalý link: http://hdl.handle.net/11104/0263554