Clinal patterns of desiccation and starvation resistance in ancestral and invading populations of Drosophila subobscura.
Clinal patterns of desiccation and starvation resistance in ancestral and invading populations of Drosophila subobscura.
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DOI：
10.1111/j.1752-4571.2008.00040.x
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发表时间：
2008-08
影响因子：
4.1
通讯作者：
Huey RB
中科院分区：
文献类型：
--
作者：
Gilchrist GW;Jeffers LM;West B;Folk DG;Suess J;Huey RB
随着入侵物种的扩张，它们最终会遇到限制其传播的物理和生物压力。我们研究纬度和气候变化的生理耐受性在一个本地和两个入侵种群的果蝇subobscura。这些苍蝇原产于古北地区，但在1980年左右入侵了南美洲和北美洲，并在每个大陆的15°纬度范围内迅速蔓延。入侵苍蝇迅速进化的纬度倾斜的染色体倒位频率和翅膀的大小，平行的原住民在旧世界。在这里，我们调查是否在所有三大洲的苍蝇已经进化出平行的梯度在干燥和饥饿的耐受性，这样的苍蝇在低纬度地区（热，干燥）可能会增加抗应激能力。饥饿耐受性不随任何大陆的纬度或气候而变化。相反，在所有三大洲，干燥耐受性随纬度而变化，尽管不是平行的。在北美和欧洲，干燥耐受性与纬度成反比，正如预期的那样。但在南美洲，干燥耐受性随着纬度的增加而增加，在相对凉爽和潮湿的地区最大。各大洲种间竞争的纬度模式差异可能会影响生理抗性的梯度选择，但在这些大陆上没有明显的简单模式。
As invading species expand, they eventually encounter physical and biotic stressors that limit their spread. We examine latitudinal and climatic variation in physiological tolerance in one native and two invading populations of Drosophila subobscura. These flies are native to the Palearctic region, but invaded both South and North America around 1980 and spread rapidly across 15° of latitude on each continent. Invading flies rapidly evolved latitudinal clines in chromosome inversion frequencies and in wing size that parallel those of native populations in the Old World. Here we investigate whether flies on all three continents have evolved parallel clines in desiccation and starvation tolerance, such that flies in low-latitude regions (hot, dry) might have increased stress resistance. Starvation tolerance does not vary with latitude or climate on any continent. In contrast, desiccation tolerance varies clinally with latitude on all three continents, although not in parallel. In North American and Europe, desiccation tolerance is inversely related to latitude, as expected. But in South America, desiccation tolerance increases with latitude and is greatest in relatively cool and wet areas. Differences among continents in latitudinal patterns of interspecific-competition potentially influence clinal selection for physiological resistance, but no simple pattern is evident on these continents.
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影响因子：
56.9
作者：
Balanya, Joan;Oller, Josep M.;Serra, Luis
通讯作者：
Serra, Luis
影响因子：
8.8
作者：
Hoffmann, AA;Anderson, A;Hallas, R
通讯作者：
Hallas, R
影响因子：
56.9
作者：
Huey, RB;Gilchrist, GW;Serra, L
通讯作者：
Serra, L
影响因子：
56.9
作者：
Hoffmann, AA;Hallas, RJ;Schiffer, M
通讯作者：
Schiffer, M
影响因子：
2.7
作者：
BUDNIK, M;BRNCIC, D
通讯作者：
BRNCIC, D