Host switching in a generalist parasitoid: contrasting transient and transgenerational costs associated with novel and original host species.
Host switching in a generalist parasitoid: contrasting transient and transgenerational costs associated with novel and original host species.
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DOI：
10.1002/ece3.1333
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发表时间：
2015-01
影响因子：
2.6
通讯作者：
Sait, Steven M.
中科院分区：
文献类型：
--
作者：
Jones, Thomas S.;Bilton, Adam R.;Mak, Lorraine;Sait, Steven M.
寄生虫面临的挑战，宿主物种之间的切换，影响生存和健身，确定其在构建社区的作用，影响物种入侵，并影响其作为生物防治剂的重要性。在多面手的寄生蜂，黑星菌canescens（Gravenhorst）（膜翅目：姬蜂科），我们调查了成本的封装，生存，和身体大小的少年时，成年寄生蜂切换从原来的主机，Plodia interpunctella（Hübner）（鳞翅目，Pyralidae），一个新的主机，Ephestia kuehniella（Zeller）（鳞翅目，Pyralidae），在多个世代。切换有一个初始的生存成本为少年拟寄生蜂在新的主机，但增加生存发生在两代。相反，原宿主的死亡率增加。身体大小，生殖力的代理，也增加了代数的新的主机物种，反映适应或孕产妇的影响，由于较大的尺寸的新的主机，因此更多的资源提供给发展中的寄生虫。切换到一个新的主机似乎有初始成本的寄生，即使新的主机可能是更好的质量，但成本迅速降低。我们预测，为拟寄生虫切换到新宿主的净成本将很复杂，并且将取决于寄生新宿主的适应度的初始降低与针对原始宿主中拟寄生虫的局部适应。
Parasitoids face challenges by switching between host species that influence survival and fitness, determine their role in structuring communities, influence species invasions, and affect their importance as biocontrol agents. In the generalist parasitoid, Venturia canescens (Gravenhorst) (Hymenoptera: Ichneumonidae), we investigated the costs in encapsulation, survival, and body size on juveniles when adult parasitoids switched from their original host, Plodia interpunctella (Hübner) (Lepidotera, Pyralidae) to a novel host, Ephestia kuehniella (Zeller) (Lepidoptera, Pyralidae), over multiple generations. Switching had an initial survival cost for juvenile parasitoids in the novel host, but increased survival occurred within two generations. Conversely, mortality in the original host increased. Body size, a proxy for fecundity, also increased with the number of generations in the novel host species, reflecting adaptation or maternal effects due to the larger size of the novel host, and therefore greater resources available to the developing parasitoid. Switching to a novel host appears to have initial costs for a parasitoid, even when the novel host may be better quality, but the costs rapidly diminish. We predict that the net cost of switching to a novel host for parasitoids will be complex and will depend on the initial reduction in fitness from parasitizing a novel host versus local adaptations against parasitoids in the original host.
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影响因子：
3.7
作者：
Jaworski CC;Bompard A;Genies L;Amiens-Desneux E;Desneux N
通讯作者：
Desneux N
影响因子：
1.9
作者：
Harvey, JA;Vet, LEM
通讯作者：
Vet, LEM
DOI：
10.1007/bf02373068
发表时间：
1995-01-01
期刊：
ENTOMOPHAGA
影响因子：
--
作者：
Harvey, JA;Thompson, DJ
通讯作者：
Thompson, DJ
影响因子：
2.9
作者：
LAWTON, JH;STRONG, DR
通讯作者：
STRONG, DR
影响因子：
5
作者：
Henry, Lee M.;May, Nigel;Roitberg, Bernard D.
通讯作者：
Roitberg, Bernard D.