Freeze tolerance and cryoprotection in caterpillars of the giant leopard moth (Ecpantheria scribonia Lepidoptera: Arctiidae)
✍ Scribed by Jack R. Layne Jr.
- Publisher
- Elsevier Science
- Year
- 2005
- Tongue
- English
- Weight
- 189 KB
- Volume
- 30
- Category
- Article
- ISSN
- 0306-4565
No coin nor oath required. For personal study only.
✦ Synopsis
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The giant leopard moth (Ecpantheria scribonia) caterpillars were collected during October in Pennsylvania (USA) in order to measure indicators of cold hardiness.
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The supercooling point rose 2-4 1C with cold acclimation (3 1C) but this change missed statistical significance (P ¼ 0:0653). Hemolymph osmolality and glycerol also rose over 50% and 4.5 Â , respectively.
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All caterpillars initially survived freezing at À3 1C for 5 days but just under 30% survived to adulthood. 4. Ecpantheria scribonia may have a lower level of cold hardiness than other arctiid moth caterpillars (e.g. Pyrrharctia isabella), reflecting interspecific latitudinal distribution patterns.