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A chromosome map of Belgica antarctica Jacobs (Diptera: Chironomidae) from Antarctica, including chromosome variability

Published online by Cambridge University Press:  02 October 2023

Paraskeva Michailova
Affiliation:
Institute of Biodiversity and Ecosystem Research at the Bulgarian Academy of Sciences, Sofia, 1000, Bulgaria
Pavlo A. Kovalenko*
Affiliation:
Institute for Evolutionary Ecology of the National Academy of Sciences of Ukraine, Kyiv, 03143, Ukraine National Antarctic Scientific Center of Ukraine, Kyiv, 01601, Ukraine
Svitlana Serga
Affiliation:
National Antarctic Scientific Center of Ukraine, Kyiv, 01601, Ukraine Taras Shevchenko National University of Kyiv, Kyiv, 01601, Ukraine CBGP, INRAE, CIRAD, IRD, SupAgro, University Montpellier, Montpellier, 34980, France
Ivan Parnikoza
Affiliation:
National Antarctic Scientific Center of Ukraine, Kyiv, 01601, Ukraine Institute of Molecular Biology and Genetics of National Academy of Science of Ukraine, Kyiv, 03143, Ukraine
Iryna Kozeretska
Affiliation:
National Antarctic Scientific Center of Ukraine, Kyiv, 01601, Ukraine
Peter Convey
Affiliation:
British Antarctic Survey, NERC, Cambridge, CB3 0ET, UK Department of Zoology, University of Johannesburg, Auckland Park, Johannesburg, 2006, South Africa Millennium Institute Biodiversity of Antarctic and Sub-Antarctic Ecosystems, Santiago, Chile

Abstract

Belgica antarctica Jacobs (Diptera: Chironomidae) is the only endemic insect found in the Antarctic Peninsula region and has stimulated considerable research interest. Due to recent rapid changes in regional climate in Antarctica, there is growing interest in studying the responses of this species to environmental changes, in particular at the chromosomal level. Chromosomal inversions are known to play an important role in speciation and adaptation in many insect species, but their frequencies in natural populations are poorly understood. In the current study, we provide the first standard polytene chromosome map for B. antarctica, which will enable the precise location of chromosomal abnormalities in future studies. We further analysed chromosomal polymorphisms in fourth-instar larvae collected from two different locations on Galindez Island, Argentine Islands, western coast of the Antarctic Peninsula. We found four previously reported and two new inherited inversions, and we discuss their possible adaptive role in response to environmental stressors in the Antarctic Peninsula region. Our data provide a foundation for future studies exploring the potential role of B. antarctica chromosomal polymorphisms in adaptation to the changing environment.

Information

Type
Biological Sciences
Copyright
Copyright © The Author(s), 2023. Published by Cambridge University Press on behalf of Antarctic Science Ltd

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Supplementary material: PDF

Michailova et al. supplementary material

Tables S1 and S2

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