AFLP diversity between the Novosibirsk and Tomsk chromosome races of the common shrew (Sorex araneus)

Polyakov, Andrey; Ilyashenko, V. B.; Onischenko, S. S.; Panov, V. V.; Бородин, П. М.

doi:10.3897/compcytogen.v3i2.14

Cited by 6 publications

(5 citation statements)

References 25 publications

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“…Thus, long periods of isolation in these different environments with adaptation to local conditions may have led to genic divergence between the lowland (Novosibirsk) and highland (Tomsk) chromosomal races of common shrew. This idea is supported by the significant morphological (Polyakov et al, 2002;P.D (Polyakov et al, 2009) divergence of these two races. Therefore, the Novosibirsk-Tomsk hybrid zone may be maintained by 'exogenous' selection (i.e.…”

Section: Introductionmentioning

confidence: 83%

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Natural hybridization between extremely divergent chromosomal races of the common shrew (Sorex araneus, Soricidae, Soricomorpha): hybrid zone in Siberia

Polyakov¹,

White²,

Jones³

et al. 2011

J of Evolutionary Biology

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Chromosomal races of the common shrew differ in sets of metacentric chromosomes and on contact may produce hybrids with extraordinarily complex configurations at meiosis I that are associated with reduced fertility. There is an expectation that these may be some of the most extreme tension zones available for study and therefore are of interest as potential sites for reproductive isolation. Here, we analyse one of these zones, between the Novosibirsk race (characterized by metacentrics go, hn, ik, jl, mp and qr) and the Tomsk race (metacentrics gk, hi, jl and mn and acrocentrics o, p, q and r), which form hybrids with a chain‐of‐nine (CIX) and a chain‐of‐three (CIII) configuration at meiosis I. At the Novosibirsk–Tomsk hybrid zone, the CIX chromosomes form clines of 8.53 km standardized width on average, whereas the cline for the CIII chromosomes was 52.83 km wide. The difference in these cline widths fits with the difference in meiotic errors expected with the CIX and CIII configuration, and we produce estimates of selection against hybrids with these types of configurations, which we relate to dispersal and age of the hybrid zone. The hybrid zone is located at the isocline at 200 m altitude above sea level; this relationship between the races and altitude is suggested at both coarse and fine scales. This indicates adaptive differences between the races that may in turn have been promoted by the chromosome differences. Thus, the extreme chromosomal divergence between the Novosibirsk and Tomsk may be associated with genic differentiation, but it is still striking that, despite the large chromosomal differences, reproductive isolation between the Novosibirsk and Tomsk races has not occurred.

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Section: Introductionmentioning

confidence: 83%

“…White, N.S. Bulatova, N. Shchipanov, P.M. Borodin, J.B. Searle, unpublished) and genomic (Polyakov et al. , 2009) divergence of these two races.…”

Section: Introductionmentioning

confidence: 93%

Natural hybridization between extremely divergent chromosomal races of the common shrew (Sorex araneus, Soricidae, Soricomorpha): hybrid zone in Siberia

Polyakov¹,

White²,

Jones³

et al. 2011

J of Evolutionary Biology

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“…It is noteworthy that in S. araneus , another shrew with high intraspecific chromosomal polymorphism, no centromere shifts were detected between all S. araneus races despite the extensive monobrachial homology distinguishing neighboring races. It has been shown recently in the study of 39 AFLP that the genetic distance between the Novosibirsk and Tomsk chromosome races of S. araneus corresponds to that found between subspecies of mammals [Polyakov et al, 2009]. Recently, the Valais chromosome race of S. araneus was awarded species rank as S. antinorii, based on genetic and morphological evidence [Brunner et al, 2002].…”

Section: A High Level Of Karyotype Polymorphism In S Tundrensis Suggmentioning

confidence: 99%

Karyotype Evolution of Eulipotyphla (Insectivora): The Genome Homology of Seven Sorex Species Revealed by Comparative Chromosome Painting and Banding Data

Biltueva

Vorobieva

Perelman

et al. 2011

Cytogenet Genome Res

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The genus Sorex is one of the most successful genera of Eulipotyphla. Species of this genus are characterized by a striking chromosome variability including XY1Y2 sex chromosome systems and exceptional chromosomal polymorphisms within and between populations. To study chromosomal evolution of the genus in detail, we performed cross-species chromosome painting of 7 Sorex species with S. granarius and S. araneus whole-chromosome probes and found that the tundra shrew S. tundrensis has the most rearranged karyotype among these. We reconstructed robust phylogeny of the genus Sorex based on revealed conserved chromosomal segments and syntenic associations. About 16 rearrangements led to formation of 2 major Palearctic groups after their divergence from the common ancestor: the S. araneus group (10 fusions and 1 fission) and the S. minutus group (5 fusions). Further chromosomal evolution of the 12 species inside the groups, including 5 previously investigated species, was accompanied by multiple reshuffling events: 39 fusions, 20 centromere shifts and 10 fissions. The rate of chromosomal exchanges upon formation of the genus was close to the average rate for eutherians, but increased during recent (about 6–3 million years ago) speciation within Sorex. We propose that a plausible ancestral Sorex karyotype consists of 56 elements. It underwent 20 chromosome rearrangements from the boreoeutherian ancestor, with 14 chromosomes retaining the conserved state. The set of genus-specific chromosome signatures was drawn from the human (HSA)-shrew comparative map (HSA3/12/22, 8/19/3/21, 2/13, 3/18, 11/17, 12/15 and 1/12/22). The syntenic association HSA4/20, that was previously proposed as a common trait of all Eulipotyphla species, is shown here to be an apomorphic trait of S. araneus.

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“…We therefore also used records from Polyakov et al . (, , ), which provide multiple occurrences in this region. We also were able to use records published in Bannikova et al .…”

Section: Methodsmentioning

confidence: 99%

Effects of late quaternary climate change on Palearctic shrews

Prost

Klietmann

Kolfschoten

et al. 2013

Global Change Biology

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The Late Quaternary was a time of rapid climatic oscillations and drastic environmental changes. In general, species can respond to such changes by behavioral accommodation, distributional shifts, ecophenotypic modifications (nongenetic), evolution (genetic) or ultimately face local extinction. How those responses manifested in the past is essential for properly predicting future ones especially as the current warm phase is further intensified by rising levels of atmospheric carbon dioxide. Here, we use ancient DNA (aDNA) and morphological features in combination with ecological niche modeling (ENM) to investigate genetic and nongenetic responses of Central European Palearctic shrews to past climatic change. We show that a giant form of shrew, previously described as an extinct Pleistocene Sorex species, represents a large ecomorph of the common shrew (Sorex araneus), which was replaced by populations from a different gene-pool and with different morphology after the Pleistocene Holocene transition. We also report the presence of the cold-adapted tundra shrew (S. tundrensis) in Central Europe. This species is currently restricted to Siberia and was hitherto unknown as an element of the Pleistocene fauna of Europe. Finally, we show that there is no clear correlation between climatic oscillations within the last 50 000 years and body size in shrews and conclude that a special nonanalogous situation with regard to biodiversity and food supply in the Late Glacial may have caused the observed large body size.

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AFLP diversity between the Novosibirsk and Tomsk chromosome races of the common shrew (Sorex araneus)

Cited by 6 publications

References 25 publications

Natural hybridization between extremely divergent chromosomal races of the common shrew (Sorex araneus, Soricidae, Soricomorpha): hybrid zone in Siberia

Natural hybridization between extremely divergent chromosomal races of the common shrew (Sorex araneus, Soricidae, Soricomorpha): hybrid zone in Siberia

Karyotype Evolution of Eulipotyphla (Insectivora): The Genome Homology of Seven Sorex Species Revealed by Comparative Chromosome Painting and Banding Data

Effects of late quaternary climate change on Palearctic shrews

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