Comprehensive analysis of population genetics of Phoxinus phoxinus ujmonensis in the Irtysh River: Abiotic and biotic factors

Abstract

As a widely distributed species along the Irtysh River, Phoxinus phoxinus ujmonensis (Kaschtschenko, 1899) was used as a model to investigate genetic diversity and population structure as well as the influence of environmental factors on population genetics. In this study, we specifically developed 12 polymorphic microsatellite loci. The analysis of microsatellite and mtDNA markers revealed a high and a moderate genetic diversity across seven populations, respectively. Moderate differentiation was also detected among several populations, indicating the impact of habitat fragmentation and divergence. The absence of isolation by distance implied an extensive gene flow, while the presence of isolation by adaptation implied that these populations might be in the process of adapting to divergent habitats. Correlation analysis showed that abiotic factors like dissolved oxygen, pH, total dissolved solids, and conductivity in water as well as biotic factors like plankton diversity and fish species diversity had impact on genetic diversity and divergence in P. phoxinus ujmonensis populations. The results of this study will provide an insight into the effect of environmental factors on genetic diversity and contribute to the study of population genetics of sympatric species.

Linking large‐scale genetic structure of three Argynnini butterfly species to geography and environment

“…Depending on the species' mobility, high mountain ranges may hinder dispersal and restrict gene flow. In addition to the direct effects that climatic and geographical factors may have on the evolution of species, there is potential for differential and divergent selection owing to spatial variation in community species composition and biotic interactions with host plants, competitors, predators and enemies to influence local adaptations and genetic structure (Magalhaes et al, 2011; Mopper & Strauss, 2013; Pilot et al, 2006; Runquist et al, 2020; Xie et al, 2019). Again, large‐scale comparative biogeographical approaches can inform about the relative roles of different abiotic and biotic factors.…”

The Complete Mitochondrial Genome of Eurasian Minnow (Phoxinus cf. Phoxinus) from the Heilongjiang River, and Its Phylogenetic Implications

“…Although there have been fewer comprehensive studies of Phoxinus spp. in Asia, the genetic structure of Phoxinus has been investigated with respect to their distribution [ 23 , 24 , 25 , 26 , 27 , 28 , 29 ] and mitochondrial DNA data have accumulated. Unfortunately, various mtDNA markers were used in these studies, and most of them were not COI genes, making direct comparison of different Asian populations or their European relatives difficult.…”

Genetic Divergence of Two Sitobion avenae Biotypes on Barley and Wheat in China

“…In order to develop ecologically based management programs, it is of great importance to understand the genetic diversity and population structure of insect pests. Genetic diversity and divergence among populations are essential in enabling insect species to respond rapidly to evolutionary challenges, thus having significant impacts on the adaptability of insects under constantly changing environmental conditions [1][2][3]. During the long term evolutionary process, insect species could have experienced genetic differentiation and diversification from combined effects of mutation, selection, gene flow, and genetic drift [4][5][6][7].…”