Seasonal Changes of Supercooling Points, Haemolymph Carbohydrate Contents and Freezing-tolerance in Overwintering Pupae of Two Common Swallowtails Papilio machaon and P. xuthus

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概要

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• Diapausing pupae of Papilio machaon were compared with those of P. xuthus for their seasonal changes in supercooling capacity, freezing-tolerance and haemolymph cryoprotectant level. Haemolymph glycerol levels of both species reached a maximum (20 mg/ml) in mid-November. The high levels of glycerol were maintained until mid-February or mid-March and decreased thereafter. Trehalose levels fluctuated between 10 and 15 mg/ml during the winter. In spite of such similarity in carbohydrate metabolism, two species were distinctly different in freezing-tolerance. P. machaon became tolerant to freezing at -30℃ in mid-November with the increased level of glycerol. P. xuthus was freezing-intolerant throughout the overwintering period, its supercooling point dropped to about -25℃ represented the lower lethal temperature.

• 日本昆虫学会の論文
• 1988-09-25

著者

• Shimada Kimio

  Zoological Section Institute Of Low Temperature Science Hokkaido University

関連論文

• Aspects of Overwintering in the Cabbage Armyworm, Mamestra brassicae (Lepidoptera, Noctuidae) : I. Supercooling Points and Contents of Glycogen and Trehalose in Pupae
• Cold Resistance and Related Aspects of the Spotted Cutworm, Xestia c-nigrum L : Lepidoptera : Noctuidae
• Seasonal Changes of Supercooling Points, Haemolymph Carbohydrate Contents and Freezing-tolerance in Overwintering Pupae of Two Common Swallowtails Papilio machaon and P. xuthus
• Effects of Photoperiod and Low Temperature on Larval Development and Freezing-Tolerance of Xestia c-nigrum L. : Lepidoptera : Noctuidae

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