Publications by authors named "Mikhail I Gordeev"
Article Synopsis
- Detailed study of phylogeography is crucial for managing mosquito species that spread diseases like malaria, particularly focusing on the two related species, Anopheles messeae and An. daciae.
- The research used ribosomal DNA analysis and karyotyping across 28 Eurasian locations to uncover genetic diversity and population structure, highlighting significant differences in their chromosomes and indicating limited gene flow between the species.
- Findings suggest that An. messeae has a more complex genetic makeup than An. daciae, with implications for understanding malaria transmission risk in various regions, particularly in northern Europe.
Article Synopsis
- The study focuses on the phylogenetic relationships of malaria-carrying mosquitoes in the Maculipennis Group, examining how their traits and evolutionary history affect disease transmission.
- Phylogenomic analysis of 13 mosquito species revealed that the Palearctic species An. beklemishevi clusters with Eurasian species and showed closer ties to An. freeborni from North America than to An. quadrimaculatus.
- Migration patterns suggest that these mosquitoes moved from North America to Eurasia around 20-25 million years ago, with significant genetic exchanges occurring between isolated species, impacting their traits and adaptations.
Article Synopsis
- The study investigates the genetic diversity of the Eurasian malaria vector, highlighting five significant chromosomal inversions found in its natural populations.
- Researchers identify a cryptic species distinguished by nucleotide substitutions in the ribosomal DNA's Internal Transcribed Spacer 2 (ITS2) region, though a complete reference cytogenetic map is lacking.
- A new cytogenetic map and ITS2-RFLP diagnostic method were developed, revealing notable differences in chromosomal inversion frequencies between the two species in a population from Western Siberia, with the main species exhibiting greater inversion polymorphism.
Article Synopsis
- * Researchers analyzed 276 specimens from various U.S. locations and created a reliable method using ITS2 sequences for species identification, leading to a phylogenetic tree of Anopheles species.
- * Findings showed consistent ITS2 sequence length without variation, indicating An. punctipennis is a single species across the examined areas, and identified its close relationship with other mosquitoes in the Maculipennis complex.
Genes (Basel)
February 2020
Article Synopsis
- * A study analyzed the genetic differences between two closely related species, focusing on specific nucleotide substitutions and inversion frequencies in 289 larvae from the Moscow region.
- * Results showed significant genomic divergence, especially on the inversion-rich X chromosome, indicating that inversions contribute to the limited reproductive isolation between these two species.
Parasit Vectors
March 2018
Article Synopsis
- Anopheles beklemishevi is a malaria mosquito with the northernmost distribution, and while a cytogenetic map for its larval stages exists, a standard map for adults hadn't been developed until this study.
- Using high-resolution imaging and DNA probes, the researchers created a detailed photomap of the mosquito's polytene chromosomes from ovarian nurse cells.
- The study revealed inversion polymorphisms across geographically diverse populations, indicating genetic adaptations relevant to the species’ survival and evolution.
