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More complex than expected: Cold hardiness and the concentration of cryoprotectants in overwintering larvae of five Erebia butterflies (Lepidoptera: Nymphalidae)
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SYSNO ASEP 0480827 Druh ASEP J - Článek v odborném periodiku Zařazení RIV J - Článek v odborném periodiku Poddruh J Článek ve WOS Název More complex than expected: Cold hardiness and the concentration of cryoprotectants in overwintering larvae of five Erebia butterflies (Lepidoptera: Nymphalidae) Tvůrce(i) Vrba, Pavel (BC-A) ORCID, RID
Nedvěd, Oldřich (BC-A) RID, ORCID
Zahradníčková, Helena (BC-A) RID, ORCID
Konvička, Martin (BC-A) RID, ORCIDCelkový počet autorů 4 Zdroj.dok. European Journal of Entomology. - : Biologické centrum AV ČR, v. v. i. - ISSN 1210-5759
Roč. 114, NOV 02 (2017), s. 470-480Poč.str. 11 s. Jazyk dok. eng - angličtina Země vyd. CZ - Česká republika Klíč. slova Lepidoptera ; Nymphalidae ; Satyrinae Vědní obor RIV ED - Fyziologie Obor OECD Biology (theoretical, mathematical, thermal, cryobiology, biological rhythm), Evolutionary biology CEP GA14-33733S GA ČR - Grantová agentura ČR Institucionální podpora BC-A - RVO:60077344 UT WOS 000419219900039 EID SCOPUS 85043402136 DOI 10.14411/eje.2017.060 Anotace Understanding the factors restricting the distribution of some insect species to high altitudes is hindered by poor knowledge of temporal changes in their cold hardiness during overwintering. We studied overwintering larvae of five species of Erebia butterflies (Lepidoptera: Nymphalidae: Satyrinae) differing in altitudinal distribution: lowland E. medusa, submountain E. aethiops, subalpine E. pronoe, alpine E. cassioides, and subnivean E. pluto. We subjected them to three treatments, AutumnWarm (13/8°C), imitating conditions prior to overwintering, AutumnCold (5/0°C), imitating late autumn conditions, and WinterCold (5/0°C), differing from AutumnCold by a shorter photoperiod and longer exposure to zero temperatures. Supercooling points (SCP) did not differ between species in the AutumnWarm treatment, despite large differences in the concentrations of cryoprotectants (CrPC, lowest in E. medusa and E. aethiops). Lowland E. medusa was freeze-tolerant, the subalpine, alpine and subnivean species were freeze-avoidant, whereas submountain E. aethiops displayed a mixed strategy. SCPs diverged in the AutumnCold treatment: it increased in the lowland E. medusa (from -16.5 to -10.8°C) and reached the lowest value in E. cassioides (-21.7°C). In WinterCold, SCP increased in subalpine E. pronoe (from -16.1°C in AutumnWarm and -18.7°C in AutumnCold to -12.6°C). E. medusa decreased and E. aethiops increased their CrPCs between autumn and winter, the highest CrPC was recorded in subnivean E. pluto. CrPC did not correlate with SCP across species and treatments. Cryoprotectant profiles corroborated the difference between lowland and freeze-tolerant E. medusa and the three high altitude freeze-avoidant species, with E. aethiops in an intermediate position. Glycerol was surprisingly rare, trehalose was important in all species, and such rare compounds as monopalmitin and monostearin were abundantly present in E. pronoe, E. cassioides and E. pluto. Pracoviště Biologické centrum (od r. 2006) Kontakt Dana Hypšová, eje@eje.cz, Tel.: 387 775 214 Rok sběru 2018 Elektronická adresa https://www.eje.cz/pdfs/eje/2017/01/60.pdf
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