Heritability and evolutionary potential in thermal tolerance traits in the invasive Mediterranean cryptic species of Bemisia tabaci (Hemiptera: Aleyrodidae).
Heritability and evolutionary potential in thermal tolerance traits in the invasive Mediterranean cryptic species of Bemisia tabaci (Hemiptera: Aleyrodidae).
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地中海入侵隐性烟粉虱（半翅目：粉虱科）耐热性状的遗传力和进化潜力
DOI：
10.1371/journal.pone.0103279
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发表时间：
2014
期刊：
影响因子：
3.7
通讯作者：
Wan FH
中科院分区：
文献类型：
--
作者：
Ma FZ;Lü ZC;Wang R;Wan FH
随着全球气候变化的加剧，分析入侵物种的热耐受性和进化潜力对解释入侵物种的生态适应和分布变化具有重要意义。方差分析表明，种群和性别对热击倒时间和冷昏迷恢复时间有显著影响。基于双亲同父异母兄弟姐妹育种设计的耐热性狭义遗传力（h 2）估计值范围为0.47±0.03 ~ 0.51±0.06，耐寒性估计值范围为0.33±0.07 ~ 0.36±0.06。耐热性和耐寒性的加性遗传变异与零有显著差异。这些结果表明，入侵性烟粉虱地中海隐种具有较强的热选择响应能力，对气候变化具有快速的抗性。
With advancing global climate change, the analysis of thermal tolerance and evolutionary potential is important in explaining the ecological adaptation and changes in the distribution of invasive species. To reveal the variation of heat resistance and evolutionary potential in the invasive Mediterranean cryptic species of Bemisia tabaci, we selected two Chinese populations—one from Harbin, N China, and one from Turpan, S China—that experience substantial heat and cold stress and conducted knockdown tests under static high- and low-temperature conditions. ANOVAs indicated significant effects of populations and sex on heat knockdown time and chill coma recovery time. The narrow-sense heritability (h 2) estimates of heat tolerance based on a parental half-sibling breeding design ranged from 0.47±0.03 to 0.51±0.06, and the estimates of cold tolerance varied from 0.33±0.07 to 0.36±0.06. Additive genetic variances were significantly different from zero for both heat and cold tolerance. These results suggest that invasive B. tabaci Mediterranean cryptic species possesses a strong ability to respond to thermal selection and develops rapid resistance to climate change.
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