Genetic differentiation among populations of Myopus schisticolor (the wood lemming) — isozyme variation

Fedorov, Vadim B.; Fredriksson, Rickard; Fredga, Karl

doi:10.1038/hdy.1995.40

Cited by 8 publications

(8 citation statements)

References 13 publications

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“…The correspondence between a particular phenotype and only one genotype was obvious. IDHP and GPI patterns are also congruent with previous studies on wood lemming (Fedorov, 1990;Fredga et al, 1993;Fedorov et al, 1995). These studies reported PGM and PGDH as being invariant.…”

Section: Resultssupporting

confidence: 81%

“…The genetic population structure of the wood lemming has been documented earlier from Siberia and Scandinavia both on microgeographic (Fedorov, 1990(Fedorov, , 1991 and macrogeographic (Fedorov, 1993;Fredga et al, 1993;Fedorov et al, 1995) scales. In two of these locations, temporal replicates were also examined.…”

Section: Introductionmentioning

confidence: 99%

“…Shifts in gene frequencies are expected particularly in organisms that have small or cyclically fluctuating populations, uneven sex ratios, low migration rates or overlapping generations. The wood lemming, Myopus schisticolor, is a Palearctic mammalian herbivore inhabiting coniferous taiga forests from southern Norway to eastern Siberia (Fedorov et al, 1995). Its populations are universally characterized by female biased sex ratios caused by the presence of two different types of X chromosomes (Fredga et al, 1976).…”

Section: Introductionmentioning

confidence: 99%

“…In a Norwegian population, allele frequencies did not differ between two consecutive years (Fredga et al, 1993) whereas in a Siberian population significant heterogeneity was observed among four successive years (Fedorov, 1993). Later, Fedorov et al (1995) presented a synthesis of spatial genetic differentiation in wood lemming populations from Fennoscandia to eastern Siberia. Surprisingly, different single-locus patterns of subdivision were observed.…”

Section: Introductionmentioning

confidence: 99%

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Long-term stability of allozyme frequencies in a wood lemming, Myopus schisticolor, population with a biased sex ratio and density fluctuations

Vuorinen

Eskelinen

2005

Heredity

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Wood lemming (Myopus schisticolor) populations are characterized by female biased sex ratios and cyclic variations in population size. Both of these characteristics are assumed to reduce genetic variation and thus affect the evolutionary adaptation of the species. We addressed these questions by studying the genetic structure of a wood lemming population from eastern Finland by isozyme markers during a 21-year period, which corresponds to 40-50 generations. Contingency tests showed that genotypic proportions conformed to Hardy-Weinberg equilibrium in each of the four sampling years. Among the temporal replicates, allele frequencies differed most by 0.14 and were not significant. Genetic variation was also stable and fairly high with a mean observed heterozygosity of H ¼ 0.057. Variability in the Heinävesi population was higher than previously reported in wood lemming. The difference was mainly caused by variation at a phosphoglucomutase locus that was monomorphic in earlier studies. Significant linkage disequilibrium was observed in three of the comparisons but the disequilibrium did not appear consistently in all years. This pattern was also evidenced by the variance components, which indicated that selection favoured for specific allele pairs only in few subsamples. Heredity (2005) 94, 443-447.

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Section: Resultssupporting

confidence: 81%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Long-term stability of allozyme frequencies in a wood lemming, Myopus schisticolor, population with a biased sex ratio and density fluctuations

Vuorinen

Eskelinen

2005

Heredity

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“…Furthermore, the occurrence of a star-like mtDNA phylogeny with a central, common haplotype and low nucleotide diversity (7~=0.02%, n= 30) in Scandinavia, suggests recent post-glacial colonization by a limited number of founders (Fedorov et al, 1996). The allozyme data (Fedorov et al, 1995) are in accordance with this scenario, and it is thus likely that the mtDNA data do reflect the recent population history of Scandinavian wood lemmings.…”

Section: Colonization Jiom the North-eastmentioning

confidence: 65%

Colonization history in Fennoscandian rodents

Jaarola

Tegelström

Fredga

1999

Biological Journal of the Linnean Society

Self Cite

102

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Fennoscandia probably constitutes one of the best places on earth to study faunal history. During the height of the most recent glacial period Fennoscandia was completely covered with ice. Thus, the majority of extant species must originate from ancestors who survived the latest glaciation in non-glaciated areas outside Fennoscandia. Moreover, the geography and geological history of Fennoscandia suggests that post-glacial recolonization by land mammals must have been restricted to specific routes in time and space. Phylogeographic surveys of mitochondrial DNA (mtDNA) variation in Fennoscandian rodents have demonstrated that glacial history and patterns of post-glacial colonization have played a major role in shaping present day patterns of genetic differentiation within species. Thus, the genetic imprints of historical demographic conditions and vicariant geogaphic events have been retained within species and can be used to infer the history of populations. The field vole (Micmtu vestis) is used to illustrate these data and processes. Comparisons are made with phylogeographic surveys of the bank vole (Clethnonomysglareolus), the eastern house mouse (Mus musculus) and the wood lemming (Myopus schiticolor) as well as a few other species for which less extensive studies have been performed. The main patterns of post-glacial colonization of Fennoscandia by rodents are described. The effects of timing and patterns of colonization on contemporary population genetic structure and levels of genetic variation are discussed. Specifically, the effects of hybridization and introgression as well as founder events and bottlenecks are explored. 0 1999 Thr Linnean Socicty of London ADDITIONAL

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Low genetic differentiation in north-west European populations of the locally endangered root vole, Microtus oeconomus

Leijs¹,

Apeldoorn²,

Bijlsma³

1999

Biological Conservation

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Genetic differentiation among populations of Myopus schisticolor (the wood lemming) — isozyme variation

Cited by 8 publications

References 13 publications

Long-term stability of allozyme frequencies in a wood lemming, Myopus schisticolor, population with a biased sex ratio and density fluctuations

Long-term stability of allozyme frequencies in a wood lemming, Myopus schisticolor, population with a biased sex ratio and density fluctuations

Colonization history in Fennoscandian rodents

Low genetic differentiation in north-west European populations of the locally endangered root vole, Microtus oeconomus

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