Kim Hyojoong, Rodriguez-Saona Cesar, Lee Heung-Sik
Animal Systematics Laboratory, Department of Biological Science, Kunsan National University, Gunsan 54150, Korea.
Department of Entomology, P.E. Marucci Center, Rutgers University, Chatsworth, NJ 08019, USA.
Insects. 2022 Sep 28;13(10):880. doi: 10.3390/insects13100880.
We compared the population genetic structure between populations of the blueberry gall midge- (Johnson) (Diptera: Cecidomyiidae)-from blueberry and cranberry and determined the genetic relationships among geographical subgroups by genotyping 632 individuals from 31 different populations from their native USA regions (New Jersey, Michigan, and Georgia) and from invaded Korean regions using 12 microsatellite loci. Our population genetic analyses showed a clear separation between the two host-associated populations from blueberry and cranberry. Using data from only the blueberry-associated populations, we identified five genetically isolated subgroups. An analysis of the approximate Bayesian computation suggests that the invasive population from Korea appears to have been introduced from an unsampled source population rather than directly from its native range. Our findings will allow for an easier identification of the source of into newly invaded regions, as well as to determine their association with blueberry and cranberry, which based on our results can be considered as two distinct species.
我们比较了来自蓝莓和蔓越莓的蓝莓瘿蚊（约翰逊）（双翅目：瘿蚊科）种群之间的群体遗传结构，并通过对来自美国本土地区（新泽西州、密歇根州和佐治亚州）以及入侵韩国地区的31个不同种群的632个个体使用12个微卫星位点进行基因分型，确定了地理亚群之间的遗传关系。我们的群体遗传分析表明，来自蓝莓和蔓越莓的两个宿主相关种群之间存在明显的分离。仅使用与蓝莓相关种群的数据，我们识别出了五个遗传隔离的亚群。近似贝叶斯计算分析表明，来自韩国的入侵种群似乎是从未采样的源种群引入的，而不是直接从其原生范围引入的。我们的研究结果将有助于更轻松地识别新入侵地区的入侵源，以及确定它们与蓝莓和蔓越莓的关联，根据我们的结果，蓝莓和蔓越莓可被视为两个不同物种。
