Competitive ability and fitness differences between two introduced populations of the invasive whitefly Bemisia tabaci Q in China.
Competitive ability and fitness differences between two introduced populations of the invasive whitefly Bemisia tabaci Q in China.
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DOI：
10.1371/journal.pone.0100423
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发表时间：
2014
期刊：
影响因子：
3.7
通讯作者：
Chu D
中科院分区：
文献类型：
--
作者：
Fang YW;Liu LY;Zhang HL;Jiang DF;Chu D
长期的田间调查表明，山东省烟粉虱Q型（又称Q型）种群的Cardinium感染率较低。我们假设（1）Cardinium感染的（C +）B.烟粉虱Q种群不能有效地与未感染Cardinium的（C-）B竞争。烟粉虱Q种群;（2）C +和C-之间可能没有发生生殖隔离;（3）C-种群比C +种群具有更高的适应度。为了揭示两个引入种群（C +和C-）之间竞争能力和适应性的差异，研究了几代人之间C +和C-之间的竞争。随后，通过C +与C-个体杂交，研究了C +与C-之间的生殖隔离，并使用两性生命表方法比较了C +和C-种群的适合度。我们的结果表明，C +粉虱的竞争能力弱于C-。两个种群之间没有发生生殖隔离，C-种群的适应度高于C +种群。两个种群的竞争能力和适应度差异可以解释为什么在过去的几年里，中国山东的C-粉虱种群一直占主导地位。然而，Cardinium在粉虱中发挥的潜在作用应进一步探索。
Our long-term field survey revealed that the Cardinium infection rate in Bemisia tabaci Q (also known as biotype Q) population was low in Shandong, China over the past few years. We hypothesize that (1) the Cardinium-infected (C +) B. tabaci Q population cannot efficiently compete with the Cardinium-uninfected (C −) B. tabaci Q population; (2) no reproductive isolation may have occurred between C + and C −; and (3) the C − population has higher fitness than the C + population. To reveal the differences in competitive ability and fitness between the two introduced populations (C + and C −), competition between C + and C − was examined over several generations. Subsequently, the reproductive isolation between C + and C − was studied by crossing C + with C − individuals, and the fitnesses of C + and C − populations were compared using a two-sex life table method. Our results demonstrate that the competitive ability of the C + whiteflies was weaker than that of C −. There is that no reproductive isolation occurred between the two populations and the C − population had higher fitness than the C + population. The competitive ability and fitness differences of two populations may explain why C − whitefly populations have been dominant during the past few years in Shandong, China. However, the potential role Cardinium plays in whitefly should be further explored.
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影响因子：
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