Nucleolar organizing regions (NORs) of common vole chromosomes as nuclear markers of genome differentiation in data from a hybrid zone of two karyoforms, arvalis and obscurus

For the first time, the analysis of the mandible shape in semispecies of common vole (Microtus arvalis) from the hybrid zone was carried out using geometric morphometry methods. High morphological variability of hybrids that were closer to the parent form Microtus obscurus than to M. arvalis was found. The main trends in the shape of the mandible, which locate mainly in the horizontal plane, are revealed.

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Faculty Opinions recommendation of Nuclear markers, mitochondrial DNA and male secondary sexual traits variation in a newt hybrid zone (Triturus vulgaris x T. montandoni).

Faculty Opinions – Post-Publication Peer Review of the Biomedical Literature ◽

10.3410/f.1016361.200506 ◽

2003 ◽

Author(s):

Daniel Howard

Keyword(s):

Mitochondrial Dna ◽

Hybrid Zone ◽

Nuclear Markers ◽

Secondary Sexual Traits ◽

Triturus Vulgaris ◽

Sexual Traits ◽

Secondary Sexual

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Morphological Variability of the Mandible Shape of the Common Vole Microtus arvalis (Rodentia, Arvicolidae) Semi-species from the Hybrid Zone

Doklady Biological Sciences ◽

10.1134/s0012496619050065 ◽

2019 ◽

Vol 488 (1) ◽

pp. 145-148

Author(s):

T. A. Mironova ◽

V. B. Sycheva ◽

A. A. Martynov ◽

A. R. Gromov ◽

D. S. Kostin ◽

...

Keyword(s):

Hybrid Zone ◽

Morphological Variability ◽

Common Vole ◽

Microtus Arvalis ◽

Mandible Shape ◽

The Common

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Cytoplasmic and nuclear markers reveal contrasting patterns of spatial genetic structure in a natural Ipomopsis hybrid zone

Molecular Ecology ◽

10.1111/j.1365-294x.2005.02441.x ◽

2005 ◽

Vol 14 (3) ◽

pp. 781-792 ◽

Cited By ~ 49

Author(s):

CARRIE A. WU ◽

DIANE R. CAMPBELL

Keyword(s):

Genetic Structure ◽

Hybrid Zone ◽

Spatial Genetic Structure ◽

Nuclear Markers

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Nuclear markers, mitochondrial DNA and male secondary sexual traits variation in a newt hybrid zone ( Triturus vulgaris × T. montandoni )

Molecular Ecology ◽

10.1046/j.1365-294x.2003.01880.x ◽

2003 ◽

Vol 12 (7) ◽

pp. 1913-1930 ◽

Cited By ~ 51

Author(s):

W. Babik ◽

J. M. Szymura ◽

J. Rafiński

Keyword(s):

Mitochondrial Dna ◽

Hybrid Zone ◽

Nuclear Markers ◽

Secondary Sexual Traits ◽

Triturus Vulgaris ◽

Sexual Traits ◽

Secondary Sexual

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Spatial genetic structure across a hybrid zone between European rabbit subspecies

10.7287/peerj.preprints.479 ◽

2014 ◽

Author(s):

Fernando Alda ◽

Ignacio Doadrio

Keyword(s):

Genetic Structure ◽

Hybrid Zone ◽

Spatial Genetic Structure ◽

Local Level ◽

Geographic Distance ◽

Ecological Factors ◽

Distribution Range ◽

European Rabbit ◽

Nuclear Markers ◽

Genetic Groups

The Iberian Peninsula is the only region in the world where the two existing subspecies of the European rabbit (Oryctolagus cuniculus) naturally occur and hybridize. In this study we explore the relative roles of historical and contemporary processes in shaping the spatial genetic structure of the rabbit across its native distribution range, and how they differently affect each subspecies and the hybrid zone. For that purpose multilocus genotypes and mitochondrial DNA data were obtained for 771 rabbits across most of the species’ distribution range in Spain. Nuclear markers defined a hierarchical genetic structure firstly comprised by two genetic groups, largely congruent with the mitochondrial lineages and subspecies distributions (O. c. algirus and O. c. cuniculus), which were subsequently subdivided into seven genetic groups probably shaped by environmental or ecological factors. Geographic distance alone emerged as an important factor explaining genetic differentiation across the whole range, without the need to invoke for the effect for geographical barriers. Thus, when considering the overall genetic structure, differences at a local level seem to be of greater importance. The significantly positive spatial correlation up to a distance of only 100 km supported this hypothesis. However, northern populations of O. c. cuniculus showed more spatial genetic structure and differentiation than O. c. algirus, which could be due to local geographic barriers, limited resources, soil type and/or social behaviours limiting dispersal. The hybrid zone showed similar genetic structure to the southern populations but a larger introgression from the northern lineage genome. These differences have been attributed to selection against the hybrids rather than to behavioural differences between subspecies. Ultimately, the genetic structure of the rabbit in its native distribution range is the result of an ensemble of factors, from geographical and ecological, to behavioural and molecular, that hierarchically interact in time and space.

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Mitochondrial introgression is restricted relative to nuclear markers in a water strider (Hemiptera: Gerridae) hybrid zone

Canadian Journal of Zoology ◽

10.1139/z05-030 ◽

2005 ◽

Vol 83 (3) ◽

pp. 432-444 ◽

Cited By ~ 25

Author(s):

T A Abe ◽

J R Spence ◽

F A.H Sperling

Keyword(s):

Hybrid Zone ◽

Random Mating ◽

Experimental Studies ◽

Hybrid Zones ◽

Nuclear Markers ◽

Hybrid Inviability ◽

Mitochondrial Introgression ◽

Dna Sequence Variation ◽

Nuclear Loci ◽

Mitochondrial Locus

Although cytonuclear incompatibilities between species have been implicated in a variety of theoretical and experimental studies, the influence of such fitness interactions on gene introgression has been demonstrated in very few hybrid zones. We examined patterns of introgression between two species of Limnoporus Stål, 1868 water striders from 10 populations transecting a hybrid zone in Alberta and British Columbia. DNA-sequence variation in mitochondrial locus COI was compared with two nuclear loci, EF1-α and ITS 1. The spatial distribution of haplotype lineages showed strong barriers to gene exchange for mtDNA. Constraints on introgression were weaker for the nuclear markers, particularly ITS 1. The mtDNA from Limnoporus dissortis Drake and Harris, 1930 was associated with nuclear genes from Limnoporus notabilis Drake and Hottes, 1925 less often than expected by random mating, indicating that some cytoplasmic and nuclear combinations are favored over others and that cytonuclear incompatibilities play a role in structuring this hybrid zone. Mitochondrial mobility across the hybrid zone is likely to be restrained by the unusual hybrid inviability of these species. In a reversal of the pattern expected on the basis of Haldane's rule, females are the XX sex and yet hybrid females are much more inviable than males. Differential removal of hybrid females, which carry mtDNA, can explain disproportionately low mitochondrial introgression across the hybrid zone.

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Spatial genetic structure across a hybrid zone between European rabbit subspecies

10.7287/peerj.preprints.479v1 ◽

2014 ◽

Author(s):

Fernando Alda ◽

Ignacio Doadrio

Keyword(s):

Genetic Structure ◽

Hybrid Zone ◽

Spatial Genetic Structure ◽

Local Level ◽

Geographic Distance ◽

Ecological Factors ◽

Distribution Range ◽

European Rabbit ◽

Nuclear Markers ◽

Genetic Groups

The Iberian Peninsula is the only region in the world where the two existing subspecies of the European rabbit (Oryctolagus cuniculus) naturally occur and hybridize. In this study we explore the relative roles of historical and contemporary processes in shaping the spatial genetic structure of the rabbit across its native distribution range, and how they differently affect each subspecies and the hybrid zone. For that purpose multilocus genotypes and mitochondrial DNA data were obtained for 771 rabbits across most of the species’ distribution range in Spain. Nuclear markers defined a hierarchical genetic structure firstly comprised by two genetic groups, largely congruent with the mitochondrial lineages and subspecies distributions (O. c. algirus and O. c. cuniculus), which were subsequently subdivided into seven genetic groups probably shaped by environmental or ecological factors. Geographic distance alone emerged as an important factor explaining genetic differentiation across the whole range, without the need to invoke for the effect for geographical barriers. Thus, when considering the overall genetic structure, differences at a local level seem to be of greater importance. The significantly positive spatial correlation up to a distance of only 100 km supported this hypothesis. However, northern populations of O. c. cuniculus showed more spatial genetic structure and differentiation than O. c. algirus, which could be due to local geographic barriers, limited resources, soil type and/or social behaviours limiting dispersal. The hybrid zone showed similar genetic structure to the southern populations but a larger introgression from the northern lineage genome. These differences have been attributed to selection against the hybrids rather than to behavioural differences between subspecies. Ultimately, the genetic structure of the rabbit in its native distribution range is the result of an ensemble of factors, from geographical and ecological, to behavioural and molecular, that hierarchically interact in time and space.

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