Cytogenetic Analysis of the Bimodal Karyotype of the Common European Adder, Vipera berus (Viperidae)
Vipera berus is the species with the largest range of snakes on Earth and one of the largest among reptiles in general. It is also the only snake species found in the Arctic Circle. Vipera berus is the most involved species of the genus Vipera in the process of interspecific hybridization in nature....
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ftdoajarticles:oai:doaj.org/article:727f7f1371394cfe973168b14bced760 2023-05-15T15:08:14+02:00 Cytogenetic Analysis of the Bimodal Karyotype of the Common European Adder, Vipera berus (Viperidae) Victor Spangenberg Ilya Redekop Sergey A. Simanovsky Oxana Kolomiets 2022-12-01T00:00:00Z https://doi.org/10.3390/ani12243563 https://doaj.org/article/727f7f1371394cfe973168b14bced760 EN eng MDPI AG https://www.mdpi.com/2076-2615/12/24/3563 https://doaj.org/toc/2076-2615 doi:10.3390/ani12243563 2076-2615 https://doaj.org/article/727f7f1371394cfe973168b14bced760 Animals, Vol 12, Iss 3563, p 3563 (2022) prophase I of meiosis synaptonemal complex crossing-over recombination rate nucleolar organizer NOR Veterinary medicine SF600-1100 Zoology QL1-991 article 2022 ftdoajarticles https://doi.org/10.3390/ani12243563 2022-12-30T19:33:04Z Vipera berus is the species with the largest range of snakes on Earth and one of the largest among reptiles in general. It is also the only snake species found in the Arctic Circle. Vipera berus is the most involved species of the genus Vipera in the process of interspecific hybridization in nature. The taxonomy of the genus Vipera is based on molecular markers and morphology and requires clarification using SC-karyotyping. This work is a detailed comparative study of the somatic and meiotic karyotypes of V. berus, with special attention to DNA and protein markers associated with synaptonemal complexes. The karyotype of V. berus is a remarkable example of a bimodal karyotype containing both 16 large macrochromosomes and 20 microchromosomes. We traced the stages of the asynchronous assembly of both types of bivalents. The number of crossing-over sites per pachytene nucleus, the localization of the nucleolar organizer, and the unique heterochromatin block on the autosomal bivalent 6—an important marker—were determined. Our results show that the average number of crossing-over sites per pachytene nucleus is 49.5, and the number of MLH1 sites per bivalent 1 reached 11, which is comparable to several species of agamas. Article in Journal/Newspaper Arctic Directory of Open Access Journals: DOAJ Articles Arctic Animals 12 24 3563 |
institution |
Open Polar |
collection |
Directory of Open Access Journals: DOAJ Articles |
op_collection_id |
ftdoajarticles |
language |
English |
topic |
prophase I of meiosis synaptonemal complex crossing-over recombination rate nucleolar organizer NOR Veterinary medicine SF600-1100 Zoology QL1-991 |
spellingShingle |
prophase I of meiosis synaptonemal complex crossing-over recombination rate nucleolar organizer NOR Veterinary medicine SF600-1100 Zoology QL1-991 Victor Spangenberg Ilya Redekop Sergey A. Simanovsky Oxana Kolomiets Cytogenetic Analysis of the Bimodal Karyotype of the Common European Adder, Vipera berus (Viperidae) |
topic_facet |
prophase I of meiosis synaptonemal complex crossing-over recombination rate nucleolar organizer NOR Veterinary medicine SF600-1100 Zoology QL1-991 |
description |
Vipera berus is the species with the largest range of snakes on Earth and one of the largest among reptiles in general. It is also the only snake species found in the Arctic Circle. Vipera berus is the most involved species of the genus Vipera in the process of interspecific hybridization in nature. The taxonomy of the genus Vipera is based on molecular markers and morphology and requires clarification using SC-karyotyping. This work is a detailed comparative study of the somatic and meiotic karyotypes of V. berus, with special attention to DNA and protein markers associated with synaptonemal complexes. The karyotype of V. berus is a remarkable example of a bimodal karyotype containing both 16 large macrochromosomes and 20 microchromosomes. We traced the stages of the asynchronous assembly of both types of bivalents. The number of crossing-over sites per pachytene nucleus, the localization of the nucleolar organizer, and the unique heterochromatin block on the autosomal bivalent 6—an important marker—were determined. Our results show that the average number of crossing-over sites per pachytene nucleus is 49.5, and the number of MLH1 sites per bivalent 1 reached 11, which is comparable to several species of agamas. |
format |
Article in Journal/Newspaper |
author |
Victor Spangenberg Ilya Redekop Sergey A. Simanovsky Oxana Kolomiets |
author_facet |
Victor Spangenberg Ilya Redekop Sergey A. Simanovsky Oxana Kolomiets |
author_sort |
Victor Spangenberg |
title |
Cytogenetic Analysis of the Bimodal Karyotype of the Common European Adder, Vipera berus (Viperidae) |
title_short |
Cytogenetic Analysis of the Bimodal Karyotype of the Common European Adder, Vipera berus (Viperidae) |
title_full |
Cytogenetic Analysis of the Bimodal Karyotype of the Common European Adder, Vipera berus (Viperidae) |
title_fullStr |
Cytogenetic Analysis of the Bimodal Karyotype of the Common European Adder, Vipera berus (Viperidae) |
title_full_unstemmed |
Cytogenetic Analysis of the Bimodal Karyotype of the Common European Adder, Vipera berus (Viperidae) |
title_sort |
cytogenetic analysis of the bimodal karyotype of the common european adder, vipera berus (viperidae) |
publisher |
MDPI AG |
publishDate |
2022 |
url |
https://doi.org/10.3390/ani12243563 https://doaj.org/article/727f7f1371394cfe973168b14bced760 |
geographic |
Arctic |
geographic_facet |
Arctic |
genre |
Arctic |
genre_facet |
Arctic |
op_source |
Animals, Vol 12, Iss 3563, p 3563 (2022) |
op_relation |
https://www.mdpi.com/2076-2615/12/24/3563 https://doaj.org/toc/2076-2615 doi:10.3390/ani12243563 2076-2615 https://doaj.org/article/727f7f1371394cfe973168b14bced760 |
op_doi |
https://doi.org/10.3390/ani12243563 |
container_title |
Animals |
container_volume |
12 |
container_issue |
24 |
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3563 |
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1766339639488020480 |