Overwintering of the boreal butterfly Colias palaeno in central Europe
Jazyk angličtina Země Anglie, Velká Británie Médium print
Typ dokumentu časopisecké články, práce podpořená grantem
PubMed
24997843
Knihovny.cz E-zdroje
- MeSH
- aklimatizace * MeSH
- ekosystém MeSH
- glukosa metabolismus MeSH
- glycerol metabolismus MeSH
- kryoprotektivní látky metabolismus MeSH
- larva fyziologie MeSH
- motýli fyziologie MeSH
- nízká teplota MeSH
- trehalosa metabolismus MeSH
- zmrazování MeSH
- zvířata MeSH
- Check Tag
- zvířata MeSH
- Publikační typ
- časopisecké články MeSH
- práce podpořená grantem MeSH
- Geografické názvy
- Evropa MeSH
- Názvy látek
- glukosa MeSH
- glycerol MeSH
- kryoprotektivní látky MeSH
- trehalosa MeSH
BACKGROUND: Colias palaeno (Linnaeus, 1761) (Lepidoptera: Pieridae) is a butterfly with boreal distribution with declining populations in peat bogs and subalpine habitats in Central Europe. OBJECTIVE: We investigated the cold tolerance of overwintering caterpillars from one mountain population from Czech Republic (960m a.s.l.) and one alpine population from Italy (2000m a.s.l.). METHODS: We measured supercooling point (SCP), lower lethal temperature (LLT) and content of cryoprotectants. RESULTS: The caterpillars were freeze-avoiding, with lower LLT close to their very low SCP (-25 to -27 degree C). The mountain population accumulated high concentrations of glycerol (5% fresh mass) and sugars (trehalose 0.8%, glucose 0.2%), while the Italian alpine population only moderate amounts of glycerol (0.3%) and sugars (trehalose 0.5%, glucose 0.3%) without effect on their cold hardiness. Larvae that overwintered at +5 degree C had a lower body mass than those overwintering in natural conditions, indicating a metabolic weight loss, but both groups survived equally well. CONCLUSION: We hypothesize that the high concentration of glycerol contributes to the high desiccation tolerance.
Buro Geyer und Dolek Worthsee Germany
Department of Life Science and System Biology University of Turin Torino Italy
Faculty of Science University of South Bohemia Ceske Budejovice Czech Republic
