Costs and benefits of Wolbachia infection in immature Aedes albopictus depend upon sex and competition level.
Costs and benefits of Wolbachia infection in immature Aedes albopictus depend upon sex and competition level.
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DOI：
10.1016/j.jip.2010.08.005
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发表时间：
2010-11
影响因子：
3.4
通讯作者：
Dobson SL
中科院分区：
文献类型：
--
作者：
Gavotte L;Mercer DR;Stoeckle JJ;Dobson SL
细菌内共生体对寄主产生多种影响，并对寄主的健康和发育产生重大影响。专性的、母系遗传的沃尔巴克氏体就是一个例子，它可以感染广泛的无脊椎动物。沃尔巴克氏体能够改变宿主的繁殖，从而促进感染的传播。沃尔巴克氏体也给宿主带来直接的生理成本和利益，使它们被分类为寄生虫或共生动物变得复杂。本研究考察了沃尔巴克氏体感染对白纹伊蚊种内幼虫竞争的影响，目的是考察沃尔巴克氏体感染对混合种群的影响。与之前研究沃尔巴克氏体感染对成年白纹伊蚊适应性影响的工作类似，本文提出的结果支持沃尔巴克氏体在所有生命阶段（包括未成熟阶段）影响的假设。实验中检测到的感染白纹伊蚊幼虫的差异竞争力表明，在高度竞争条件下，感染沃尔巴克氏体的雌性白纹伊蚊相对于未感染的雌性白纹伊蚊竞争力较弱。相比之下，在低竞争压力下，受感染的雌性存活率更高。因此，沃尔巴克氏体感染作为一种发育条件的功能，从寄生转变为共生。结果讨论了沃尔巴克氏体在白纹伊蚊种群中的入侵和持久性。这一结果对稳定的沃尔巴克氏菌共生的进化很重要，包括沃尔巴克氏菌入侵未感染的种群。由此产生的感染动态，发生在一个受感染的人群进行了讨论。
Bacterial endosymbionts induce various effects on hosts and can dramatically impact host fitness and development. An example is provided by obligate, maternally-inherited Wolbachia, which infect a broad range of invertebrates. Wolbachia are capable of altering host reproduction, thereby promoting infection spread. Wolbachia also pose direct physiological costs and benefits to hosts, complicating their categorization as parasites or mutualists. This study examines for an effect of Wolbachia infection in intraspecific larval competition by Aedes albopictus mosquitoes, with the goal of examining for an impact of Wolbachia infection in mixed populations. Similar to prior work examining for an influence of Wolbachia infection on the fitness of A. albopictus in adults, the results presented here support the hypothesized impact of Wolbachia across all life stages, including immatures. The differential competitiveness of infected larvae detected in our experiments indicates that Wolbachia infected A. albopictus females are less competitive relative to uninfected females when competing under highly competitive conditions. In contrast, under low competitive pressures, infected females experience higher survivorship. Thus, Wolbachia infection shifts from parasitism to mutualism as a function of developmental conditions. Results are discussed in relation to the invasion and persistence of Wolbachia in A. albopictus populations. The results are important to the evolution of stable Wolbachia symbioses, including Wolbachia invasion of an uninfected population. The resulting infection dynamics that occur in an infected population are discussed.
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DOI：
10.4269/ajtmh.2002.66.103
发表时间：
2002-01-01
影响因子：
3.3
作者：
Kittayapong, P;Baisley, KJ;O'Neill, SL
通讯作者：
O'Neill, SL
影响因子：
2.1
作者：
Dohm, DJ;Rowton, ED;Turell, MJ
通讯作者：
Turell, MJ
影响因子：
2.4
作者：
ANDERSON, RM;MAY, RM
通讯作者：
MAY, RM
DOI：
10.1098/rspb.1998.0402
发表时间：
1998-06-22
影响因子：
4.7
作者：
Bouchon, D;Rigaud, T;Juchault, P
通讯作者：
Juchault, P
影响因子：
2.6
作者：
Bandi, C;Trees, AJ;Brattig, NW
通讯作者：
Brattig, NW