Sorokina Svetlana, Sevastianov Nikita, Tarasova Tatiana, Vedenina Varvara
Koltzov Institute of Developmental Biology, Russian Academy of Sciences, 26 Vavilov Street, Moscow 119334, Russia.
Institute for Information Transmission Problems, Russian Academy of Sciences, 19 Bolshoy Karetny per., Moscow 127051, Russia.
Insects. 2024 Aug 3;15(8):592. doi: 10.3390/insects15080592.
The two cryptic grasshopper species of the genus , and , demonstrate different acoustic behavior despite a strong similarity in morphology. A hybridization between these species is possible in the contact zone; however, there are little molecular data about the relationships of these species. The analysis of the mtDNA control region (CR) reveals that haplotypes of have more in common with the more distant species than with the closely related . In the contact zone, has mt-haplotypes shared with , which might indicate an introgression of mtDNA from to the gene pool. We also analyze the structure and evolutionary rate of the mtDNA CR for the genus and estimate the time of divergence of the species within the genus. The phylogenetic tree of the tribe Stenobothrini reconstructed with either the CR or COI gave the same four groups. The phylogenetic tree of the genus has a star-like topology with each mtDNA haplotype found in any analyzed species, except , which forms a separate branch. The maximum degree of incomplete lineage sorting can demonstrate either ancestral polymorphism or introgression.
该属的两种隐性蚱蜢物种，[物种名称1]和[物种名称2]，尽管形态上极为相似，但表现出不同的声学行为。在接触区域，这些物种之间可能发生杂交；然而，关于这些物种之间关系的分子数据很少。对线粒体DNA控制区（CR）的分析表明，[物种名称1]的单倍型与亲缘关系较远的[物种名称3]的单倍型有更多共同之处，而非与亲缘关系较近的[物种名称2]。在接触区域，[物种名称1]具有与[物种名称2]共享的线粒体单倍型，这可能表明线粒体DNA从[物种名称2]渗入到了[物种名称1]的基因库。我们还分析了该属线粒体DNA控制区的结构和进化速率，并估计了该属内物种的分化时间。用控制区（CR）或细胞色素氧化酶亚基I（COI）重建的Stenobothrini族系统发育树给出了相同的四个组。该属的系统发育树具有星状拓扑结构，除了[物种名称4]形成一个单独分支外，在所分析的任何物种中发现的每个线粒体DNA单倍型都如此。不完全谱系分选的最大程度可以表现为祖先多态性或基因渗入。
