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首页> 外文期刊>Canadian Journal of Zoology >Freezing susceptibility and freezing tolerance in Palaearctic Cetoniidae(Coleoptera)
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Freezing susceptibility and freezing tolerance in Palaearctic Cetoniidae(Coleoptera)

机译：古白尾柏科的冷冻敏感性和耐冻性

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摘要

Insects have evolved various adaptations that allow them to survive adverse seasons. In terms of cold-hardiness, they may classically be divided into freezing-susceptible versus freezing-tolerant species. But this concept of two alternative cold-hardiness strategies is now amendable, and to better understand these adaptive mechanisms, it is of interest to study freezing resistance in taxonomically related insect species, i.e., belonging to the same family or to a group of closely related organisms sharing similar resources. Freezing susceptibility and freezing tolerance have previously been recorded in the larvae of species in the same guild of the family Cetoniidae, which mainly colonise wood mould in hollow trees. We compared freezing hardiness in five species of Cetoniidae, three species in the subfamily Trichiinae, Gnorimus nobilis (Linne), Trichius fasciatus (Linne), and Osmoderma eremita (Scopoli), and two species in the subfamily Cetoniinae, Cetonia aurata (Linne) and Cetonischema aeruginosa (Drury). Our results mainly show that two contrasting mechanisms are used during winter by third-instar larvae: those of the Trichiinae (apart from O. eremita) are probably characterized by year-round freezing susceptibility, and those of O. eremita and the are probably distinguished by seasonal freezing susceptibility (summer) and seasonal freezing tolerance Cetoniinae are probably distinguished by seasonal freezing susceptibility (summer) and seasonal freezing tolerance (winter). We question the current taxonomic position of the genus Osmoderma. Morphological, ecological, and behavioural arguments may be put forward to support the transfer of O. eremita from the Trichiinae to the Cetoniinae, and we stress that ecophysiological arguments, often neglected in this kind of taxonomic revision, must also be taken into account.
机译：昆虫已经进化出各种适应能力，可以适应不利的季节。就耐寒性而言，它们可以经典地分为易感性和耐寒性物种。但是，现在可以修改这两种替代的耐寒性策略的概念，并且为了更好地理解这些适应性机制，研究与分类相关的昆虫物种（即属于同一个家族或一组密切相关的昆虫）的抗冻性很有意义。共享相似资源的生物。先前已经在Cetoniidae科的同一行会的物种幼虫中记录了冻敏感性和冻耐受性，其主要定居于空心树中的木霉。我们比较了五种天牛科，三毛纲亚科，Nonos bilis（Linne），fachicias fasciatus（Linne）和Osmoderma eremita（Scopoli）亚科的三种，以及Cetoniinae亚科，Cetonia aurata（Linne）和亚科的两种。铜绿Cetonischema（Drury）。我们的结果主要表明，三龄幼虫在冬季使用了两种相反的机制：毛虫（除毛er虫外）的特征可能是全年冻感的特征，而毛虫和and虫的特征是可能的。通过季节性冻结敏感性（夏季）和季节性冻结耐受性Cetoniinae可能以季节性冻结敏感性（夏季）和季节性冻结耐受性（冬季）来区分。我们对Osmoderma属的当前分类学地位提出质疑。可以提出形态学，生态学和行为学方面的论据来支持O. eremita从Trichiinae到Cetoniinae的转移，我们强调，也必须考虑到在这种分类学修订中经常被忽视的生态生理学论据。

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