THERMAL-HYSTERESIS-FACTORS IN OVERWINTERING INSECTS
THERMAL-HYSTERESIS-FACTORS IN OVERWINTERING INSECTS
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DOI：
10.1016/0022-1910(79)90083-0
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发表时间：
1979-01-01
影响因子：
2.2
通讯作者：
DUMAN, JG
中科院分区：
文献类型：
--
作者：
DUMAN, JG
在美国印第安纳州北部的死树树皮下发现的9种昆虫的血淋巴(Uloma impressa, Platydema sp., Ampedus sp., a . linteus （Say), Lepidotus disideus (Weber), Melanotus sp., Cucujus clavipes Fabricus， Dendroides canadensis Latreille和Parcoblatta pennsylvania）含有产生数度热滞后（冰点和熔点之间的差异）的因素。这些热滞因素在越冬甲虫中很常见，但在非鞘翅目昆虫中很少见，并且类似于极地海洋硬骨鱼的大分子防冻剂。这些因子在冻害昆虫和耐冻害昆虫中均被发现，它们在冻害昆虫中的作用似乎是降低过冷点，从而降低昆虫的致死温度。这些因子在抗冻种属中的作用尚不清楚；讨论了可能的函数。
The hemolymph of 9 spp. of insects [Uloma impressa, Platydema sp., Ampedus sp., A. linteus (Say), Lepidotus discoideus (Weber), Melanotus sp., Cucujus clavipes Fabricus, Dendroides canadensis Latreille and Parcoblatta pennsylvanica] found overwintering under the bark of dead trees in northern Indiana [USA] contained factors which produced a thermal hysteresis (a difference between the freezing and melting points) of several degrees. These thermal-hysteresis-factors were common in overwintering beetles, but rare in non-Coleoptera, and are similar to the macromolecular antifreezes of polar marine teleost fishes. The factors were found in both freeze-susceptible and freeze-tolerant species, and their function in freeze-susceptible insects appears to be depress the supercooling points and therefore the lower lethal temperatures of the insects. The function of the factors in freeze-tolerant species is not clear; possible functions are discussed.