Detrimental effects of a failed infection by a co-invasive parasite on a native congeneric parasite and its native host.
Detrimental effects of a failed infection by a co-invasive parasite on a native congeneric parasite and its native host.
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DOI：
10.1007/s10530-021-02464-0
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发表时间：
2021-05
影响因子：
2.9
通讯作者：
Juliano SA
中科院分区：
文献类型：
--
作者：
McIntire KM;Juliano SA
生物入侵者通常伴随着共同入侵的寄生虫，可以改变生态系统功能并建立原生宿主-寄生虫关系。当这些共入侵寄生虫在一个群落中建立时，它们可以影响本地宿主的适应性和本地宿主感染的强度、流行率和成功。三体伊蚊（Aedes triseriatus）是北美原生动物寄生虫巴氏蛔虫（Ascogregarina barretti）的宿主。在白纹伊蚊入侵的地区，三尾伊蚊也可能被白纹伊蚊的共同入侵寄生虫——台湾Ascogregarina感染。我们测试了以下假设：1)共入侵寄生虫的存在会对原生寄生虫的适应性产生负面影响，导致感染强度、流行率和感染成功率下降，这可能是由宿主的免疫诱导或寄生虫间的竞争引起的；2)与原生和共入侵寄生虫的共感染会对宿主的适应性产生负面影响，导致幼虫发育时间延长，存活率和生殖适应性降低，这是由感染成本增加引起的。在我们的共感染实验中，我们发现，无论是否与本地寄生虫共感染，任何暴露于共入侵寄生虫的暴露都会导致宿主A. triseriatus的存活率降低和发育时间延长。暴露于共同入侵和本地寄生虫会降低宿主幼虫的本地寄生虫感染强度，并减少所产生的雄性成虫的本地寄生虫繁殖体产量。总之，这些结果表明，共同入侵的寄生虫不仅可能改变本地宿主-寄生虫关系，而且可能影响本地宿主的种群动态。
Biological invaders often are accompanied by co-invasive parasites that can alter ecosystem function and established native host-parasite relationships. When these co-invasive parasites establish in a community, they can affect native host fitness and native parasite infection intensity, prevalence, and success within the native host. The mosquito, Aedes triseriatus, is North American host to protozoan parasite, Ascogregarina barretti. In geographic regions invaded by the mosquito Aedes albopictus, A. triseriatus may also be infected by A. albopictus’ co-invasive parasite, Ascogregarina taiwanensis. We tested the hypotheses that: 1) The presence of a co-invasive parasite will negatively affect native parasite fitness, yielding decreased infection intensity, prevalence, and infection success, which could be caused by immune induction of the host or inter-parasite competition, and 2) Coinfection with the native and co-invasive parasites will negatively affect host fitness, yielding increased larval development time and decreased survival and reproductive fitness, caused by increased costs of infection. In our coinfection experiments we find that any exposure to the co-invasive parasite resulted in decreased survivorship and increased development time of the host A. triseriatus, with or without coinfection by the native parasite. Exposure to both co-invasive and native parasites yielded reduced native parasite infection intensity in the host larva and reduced native parasite propagule production in the resulting male adults. Together, these results indicate not only the potential for the co-invasive parasite to alter the native host-parasite relationship, but to impact native host population dynamics.
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影响因子：
2.1
作者：
Lord CC;Alto BW;Anderson SL;Connelly CR;Day JF;Richards SL;Smartt CT;Tabachnick WJ
通讯作者：
Tabachnick WJ
影响因子：
2.9
作者：
Aliabadi, Brianna W.;Juliano, Steven A.
通讯作者：
Juliano, Steven A.
影响因子：
2.1
作者：
BLACKMORE, MS;SCOLES, GA;CRAIG, GB
通讯作者：
CRAIG, GB
影响因子：
2.9
作者：
Fellous, Simon;Koella, Jacob C.
通讯作者：
Koella, Jacob C.
影响因子：
2.1
作者：
Benedict, Mark Q.;Levine, Rebecca S.;Lounibos, L. Philip
通讯作者：
Lounibos, L. Philip