Chromosomal Polymorphism of Malaria Mosquitoes of Karelia and Expansion of Northern Boundaries of Species Ranges

IF 0.6 4区生物学 Q4 GENETICS & HEREDITY Russian Journal of Genetics Pub Date : 2024-06-19 DOI:10.1134/s1022795424700194

A. V. Moskaev, A. G. Bega, V. I. Panov, V. P. Perevozkin, M. I. Gordeev

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Abstract

Chromosomal variability in peripheral populations of malaria mosquitoes of the Anopheles genus (Diptera, Culicidae) inhabiting the territory of Karelia has been studied. The modern northern limits of the ranges inhabited by sibling species of malarial mosquitoes An. beklemishevi, An. daciae, An. messeae s. s. and An. maculipennis were established. After 2010, the boundary of distribution of malaria mosquitoes shifted northward by 170 km, from the 65th parallel to the Arctic Circle. Inversion heterozygotes XL₁, XL₂, 2R₂, 3R₁, and 3R₅ were found in peripheral populations of An. beklemishevi. Peripheral populations of An. messeae s. s. were homozygous for inversion of sex chromosome XL₁ and differed in the frequencies of autosome inversions from the middle taiga populations. The frequency of heterozygotes for autosomal inversions 2R₁, 3R₁, and 3L₁ increased in populations at the edge of the species range. Chromosomal variability in peripheral populations contributes to the dispersal of malaria mosquitoes in high latitudes under warming climate conditions.

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卡累利阿疟疾蚊子的染色体多态性和物种分布区北部边界的扩展

摘要对栖息在卡累利阿境内的按蚊属（双翅目，库蚊科）疟疾蚊子外围种群的染色体变异性进行了研究。研究确定了疟蚊同胞种 An. beklemishevi、An. daciae、An. messeae s. s. 和 An. maculipennis 居住范围的现代北部界限。2010 年后，疟蚊的分布边界向北移动了 170 公里，从北纬 65 度线移至北极圈。在贝克勒米舍维蚊（An. beklemishevi）的外围种群中发现了反转杂合子 XL1、XL2、2R2、3R1 和 3R5。介壳虫外围种群的性染色体 XL1 为同源染色体倒位，其自体染色体倒位的频率与泰加中部种群不同。在物种分布区边缘的种群中，常染色体倒位 2R1、3R1 和 3L1 的杂合子频率有所增加。在气候变暖的条件下，边缘种群的染色体变异有助于疟蚊在高纬度地区的扩散。

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来源期刊

Russian Journal of Genetics 生物-遗传学

CiteScore

1.00

自引率

33.30%

发文量

126

审稿时长

1 months

期刊介绍： Russian Journal of Genetics is a journal intended to make significant contribution to the development of genetics. The journal publishes reviews and experimental papers in the areas of theoretical and applied genetics. It presents fundamental research on genetic processes at molecular, cell, organism, and population levels, including problems of the conservation and rational management of genetic resources and the functional genomics, evolutionary genomics and medical genetics.