Physiological and Evolutionary Changes in a Biological Control Agent During Prey Shifts Over Several Generations.
Physiological and Evolutionary Changes in a Biological Control Agent During Prey Shifts Over Several Generations.
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几代猎物转移过程中生物防治剂的生理和进化变化
DOI：
10.3389/fphys.2018.00971
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发表时间：
2018
影响因子：
4
通讯作者：
Pang H
中科院分区：
文献类型：
--
作者：
Chen ML;Wang T;Huang YH;Qiu BY;Li HS;Pang H
生物防治剂在释放后往往缺乏目标猎物或寄主。一些捕食性因子转而攻击其他被捕食生物，这可能会引起生理和进化上的变化。在这项研究中，我们调查了捕食性瓢虫Cryptolaemus montrouzieri的生活史特征，基因表达和基因型频率在实验猎物转移。C. montrouzieri连续4代以日本粉蚧为替代猎物，或在每代中转移回最初的猎物粉蚧Planococcus citri。在一般情况下，蚜虫的利用导致性能下降和严重的生理调整，在发育和繁殖性状的显着变化和大量的差异表达的基因之间的两个提供设置猎物治疗。在蚜虫喂养线，性能的发育时间，成年体重和存活率恢复到一定水平，在随后的几代，可能是由于适应性进化。特别是，我们发现，转移回粉蚧导致繁殖力逐渐增加。相应地，一种与生殖力相关的基因卵黄蛋白原的基因型，在初始群体中有几个次要等位基因，在四代内成为主要基因型。本研究探讨了短期的实验进化的所谓的专业捕食者猎物转移条件下。生物控制剂对新猎物的这种潜在的快速适应将增加与非目标效应有关的环境风险。
Biological control agents usually suffer from a shortage of target prey or hosts in their post-release stage. Some predatory agents turn to attacking other prey organisms, which may induce physiological and evolutionary changes. In this study, we investigated life history traits, gene expression and genotype frequency in the predatory ladybird beetle Cryptolaemus montrouzieri during experimental prey shifts. C. montrouzieri were either continuously fed on aphids Megoura japonica as an alternative prey for four generations or were shifted back to the initial prey mealybugs Planococcus citri in each generation. In general, the utilization of aphids resulted in reduced performance and severe physiological adjustments, indicated by significant changes in development and fecundity traits and a large number of differentially expressed genes between the two offering setup prey treatments. Within the aphid-fed lines, performance regarding the developmental time, the adult weight and the survival rate recovered to some level in subsequent generations, possibly as a result of adaptive evolution. In particular, we found that a shift back to mealybugs caused a gradual increase in fecundity. Accordingly, a genotype of the fecundity-related gene vitellogenin, of which there were several minor alleles in the initial population, became the main genotype within four generations. The present study explored the short-term experimental evolution of a so-call specialist predator under prey shift conditions. This potential rapid adaptation of biological control agents to novel prey will increase environmental risks associated with non-target effects.
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影响因子：
2.2
作者：
Kuehnle, Anne;Mueller, Caroline
通讯作者：
Mueller, Caroline
蒙特鲁齐氏隐翅虫（鞘翅目：瓢虫科）本地和引进种群的遗传分化及其对生物防治计划的影响
影响因子：
2.2
作者：
Li, Hao-Sen;Jin, Meng-Jie;Pang, Hong
通讯作者：
Pang, Hong
影响因子：
4.1
作者：
Li, Hao-Sen;Hoffmann, Ary A.;Hong, Xiao-Yue
通讯作者：
Hong, Xiao-Yue
影响因子：
2.5
作者：
De Clercq, Patrick;Mason, Peter G.;Babendreier, Dirk
通讯作者：
Babendreier, Dirk
影响因子：
3.8
作者：
Brunner, PC;Chatzivassiliou, EK;Frey, JE
通讯作者：
Frey, JE