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Stephen C Hardies - One of the best experts on this subject based on the ideXlab platform.
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Mus spretus line 1s in the Mus Musculus Domesticus inbred strain c57bl 6j are from two different Mus spretus line 1 subfamilies
Genetics, 1996Co-Authors: Yingping Zhao, Lorrie P Daggett, Stephen C HardiesAbstract:A LINE-1 element, L1C105, was found in the Mus Musculus Domesticus inbred strain, C57BL/6J. Upon sequencing, this element was found to belong to a M. spretus LINE-1 subfamily originating within the last 0.2 million years. This is the second spretus-specific LINE-1 subfamily found to be represented in C57BL/6J. Although it is unclear how these M. spretus LINE-1s transferred from M. spretus to M. m. Domesticus, it is now clear that at least two different spretus LINE-1 sequences have recently transferred. The limited divergence between the C57BL/6J spretus-like LINE-1s and their closest spretus ancestors suggests that the transfer did not involve an exceptionally long lineage of sequential transpositions.
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Mus spretus LINE-1s in the Mus Musculus Domesticus Inbred Strain C57BL/6J Are From Two Different Mus spretus LINE-1 Subfamilies
Genetics, 1996Co-Authors: Yingping Zhao, Lorrie P Daggett, Stephen C HardiesAbstract:A LINE-1 element, L1C105, was found in the Mus Musculus Domesticus inbred strain, C57BL/6J. Upon sequencing, this element was found to belong to a M. spretus LINE-1 subfamily originating within the last 0.2 million years. This is the second spretus-specific LINE-1 subfamily found to be represented in C57BL/6J. Although it is unclear how these M. spretus LINE-1s transferred from M. spretus to M. m. Domesticus, it is now clear that at least two different spretus LINE-1 sequences have recently transferred. The limited divergence between the C57BL/6J spretus-like LINE-1s and their closest spretus ancestors suggests that the transfer did not involve an exceptionally long lineage of sequential transpositions.
Yingping Zhao - One of the best experts on this subject based on the ideXlab platform.
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Mus spretus line 1s in the Mus Musculus Domesticus inbred strain c57bl 6j are from two different Mus spretus line 1 subfamilies
Genetics, 1996Co-Authors: Yingping Zhao, Lorrie P Daggett, Stephen C HardiesAbstract:A LINE-1 element, L1C105, was found in the Mus Musculus Domesticus inbred strain, C57BL/6J. Upon sequencing, this element was found to belong to a M. spretus LINE-1 subfamily originating within the last 0.2 million years. This is the second spretus-specific LINE-1 subfamily found to be represented in C57BL/6J. Although it is unclear how these M. spretus LINE-1s transferred from M. spretus to M. m. Domesticus, it is now clear that at least two different spretus LINE-1 sequences have recently transferred. The limited divergence between the C57BL/6J spretus-like LINE-1s and their closest spretus ancestors suggests that the transfer did not involve an exceptionally long lineage of sequential transpositions.
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Mus spretus LINE-1s in the Mus Musculus Domesticus Inbred Strain C57BL/6J Are From Two Different Mus spretus LINE-1 Subfamilies
Genetics, 1996Co-Authors: Yingping Zhao, Lorrie P Daggett, Stephen C HardiesAbstract:A LINE-1 element, L1C105, was found in the Mus Musculus Domesticus inbred strain, C57BL/6J. Upon sequencing, this element was found to belong to a M. spretus LINE-1 subfamily originating within the last 0.2 million years. This is the second spretus-specific LINE-1 subfamily found to be represented in C57BL/6J. Although it is unclear how these M. spretus LINE-1s transferred from M. spretus to M. m. Domesticus, it is now clear that at least two different spretus LINE-1 sequences have recently transferred. The limited divergence between the C57BL/6J spretus-like LINE-1s and their closest spretus ancestors suggests that the transfer did not involve an exceptionally long lineage of sequential transpositions.
Jean-christophe Auffray - One of the best experts on this subject based on the ideXlab platform.
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Back to the wild: does feralization impact the mandible of non-commensal house mice (Mus Musculus Domesticus)?
Biological Journal of the Linnean Society, 2019Co-Authors: Louise Souquet, Jean-christophe Auffray, Pascale Chevret, Guila Ganem, Ronan Ledevin, Sylvie Agret, Lionel Hautier, Sabrina RenaudAbstract:If domestication has been well studied lately with the recognition of a so-called 'domestication syndrome', the opposite process, feralization, has deserved much less interest. The commensal Western European house mouse (Mus Musculus Domesticus) lives in close contact to humans, a situation setting it between wild and domesticated animals. However, the house mouse also occurs in non-anthropogenic environments, forming feral populations and hence providing the opportunity to document how feralization may impact its morphology. In this study, three of those 'feral' populations from Orkney, Kerguelen Archipelago and Southern France are compared to Western European commensal populations. The shape and biomechanical properties of the mouse jaws were analysed to assess the impacts of 'feralization' on an organ under major environmental pressures through its feeding function. Mandible shape varied mostly with climate and phylogeny, and feral populations only slightly diverged from their geographically close relatives. In contrast, feral mice shared a biomechanical signature corresponding to a decrease in the superficial masseter/molar mechanical advantage suggesting less performance at molar biting. This is interpreted as a parallel response to a relaxation of environmental pressure, possibly due to diet shift in feral habitats.
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Back to the wild: does feralization affect the mandible of non-commensal house mice (Mus Musculus Domesticus)?
Biological Journal of the Linnean Society, 2019Co-Authors: Louise Souquet, Jean-christophe Auffray, Pascale Chevret, Guila Ganem, Ronan Ledevin, Sylvie Agret, Lionel Hautier, Sabrina RenaudAbstract:If domestication has been well studied lately with the recognition of a so-called 'domestication syndrome', the opposite process, feralization, has deserved much less interest. The commensal Western European house mouse (Mus Musculus Domesticus) lives in close contact to humans, a situation setting it between wild and domesticated animals. However, the house mouse also occurs in non-anthropogenic environments, forming feral populations and hence providing the opportunity to document how feralization may impact its morphology. In this study, three of those 'feral' populations from Orkney, Kerguelen Archipelago and Southern France are compared to Western European commensal populations. The shape and biomechanical properties of the mouse jaws were analysed to assess the impacts of 'feralization' on an organ under major environmental pressures through its feeding function. Mandible shape varied mostly with climate and phylogeny, and feral populations only slightly diverged from their geographically close relatives. In contrast, feral mice shared a biomechanical signature corresponding to a decrease in the superficial masseter/molar mechanical advantage suggesting less performance at molar biting. This is interpreted as a parallel response to a relaxation of environmental pressure, possibly due to diet shift in feral habitats.
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First occurrence of the house mouse (Mus Musculus Domesticus Schwarz & Schwarz, 1943) in the Western Mediterranean: a zooarchaeological revision of subfossil occurrences
Biological Journal of the Linnean Society, 2005Co-Authors: Thomas Cucchi, Jeandenis Vigne, Jean-christophe AuffrayAbstract:This paper provides a critical analysis of archaeological small mammal collections in the Mediterranean area, from the Late Glacial to the first centuries AD, to validate the presence/absence of the house mouse through zooarchaeological criteria. The results have been synthesized through a diachronic map, whose chronological phases are related to socio-economic and cultural human evolution. The house mouse (Mus Musculus Domesticus) progression in the Mediterranean begins with a quick but limited diffusion in the Eastern Mediterranean Basin achieved around the 8th millennium BC. Until the 1st millennium BC, the invasive process seems to have stopped or drastically slowed, despite the increasing opportunities of passive transport during the Bronze Age. During the 1st millennium BC, there was mass colonization by the house mouse of the entire Western Mediterranean Basin and Northern Europe. We propose to explain this chronological gap in the colonization of the Eastern and Western Mediterranean using source-sink theory considering that the western environments acted like sinks until the first millennium BC. At that time the Western Mediterranean was fully opened to Eastern influences and migrations, and the human pressures on the environment drastically increased. This may have favoured definitively the adaptation of the house mouse to the Western commensal niches.
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first occurrence of the house mouse Mus Musculus Domesticus schwarz schwarz 1943 in the western mediterranean a zooarchaeological revision of subfossil occurrences
Biological Journal of The Linnean Society, 2005Co-Authors: Thomas Cucchi, Jeandenis Vigne, Jean-christophe AuffrayAbstract:This paper provides a critical analysis of archaeological small mammal collections in the Mediterranean area, from the Late Glacial to the first centuries AD, to validate the presence/absence of the house mouse through zooarchaeological criteria. The results have been synthesized through a diachronic map, whose chronological phases are related to socio-economic and cultural human evolution. The house mouse (Mus Musculus Domesticus) progression in the Mediterranean begins with a quick but limited diffusion in the Eastern Mediterranean Basin achieved around the 8th millennium BC. Until the 1st millennium BC, the invasive process seems to have stopped or drastically slowed, despite the increasing opportunities of passive transport during the Bronze Age. During the 1st millennium BC, there was mass colonization by the house mouse of the entire Western Mediterranean Basin and Northern Europe. We propose to explain this chronological gap in the colonization of the Eastern and Western Mediterranean using source-sink theory considering that the western environments acted like sinks until the first millennium BC. At that time the Western Mediterranean was fully opened to Eastern influences and migrations, and the human pressures on the environment drastically increased. This may have favoured definitively the adaptation of the house mouse to the Western commensal niches.
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first occurrence of the house mouse Mus Musculus Domesticus schwarz schwarz 1943 in western mediterranean a zooarchaeological revision of sub fossil occurrences
Biological journal of the Linnean Society 2005 Vol.84(3) pp.429-445 [Peer Reviewed Journal], 2005Co-Authors: Thomas Cucchi, Jeandenis Vigne, Jean-christophe AuffrayAbstract:This paper provides a critical analysis of archaeological small mammal collections in the Mediterranean area, from the Late Glacial to the first centuries AD, to validate the presence/absence of the house mouse through zooarchaeological criteria. The results have been synthesized through a diachronic map, whose chronological phases are related to socio-economic and cultural human evolution. The house mouse (Mus Musculus Domesticus) progression in the Mediterranean begins with a quick but limited diffusion in the Eastern Mediterranean Basin achieved around the 8th millennium BC. Until the 1st millennium BC, the invasive process seems to have stopped or drastically slowed, despite the increasing opportunities of passive transport during the Bronze Age. During the 1st millennium BC, there was mass colonization by the house mouse of the entire Western Mediterranean Basin and Northern Europe. We propose to explain this chronological gap in the colonization of the Eastern and Western Mediterranean using source-sink theory considering that the western environments acted like sinks until the first millennium BC. At that time the Western Mediterranean was fully opened to Eastern influences and migrations, and the human pressures on the environment drastically increased. This may have favoured definitively the adaptation of the house mouse to the Western commensal niches.
Lorrie P Daggett - One of the best experts on this subject based on the ideXlab platform.
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Mus spretus line 1s in the Mus Musculus Domesticus inbred strain c57bl 6j are from two different Mus spretus line 1 subfamilies
Genetics, 1996Co-Authors: Yingping Zhao, Lorrie P Daggett, Stephen C HardiesAbstract:A LINE-1 element, L1C105, was found in the Mus Musculus Domesticus inbred strain, C57BL/6J. Upon sequencing, this element was found to belong to a M. spretus LINE-1 subfamily originating within the last 0.2 million years. This is the second spretus-specific LINE-1 subfamily found to be represented in C57BL/6J. Although it is unclear how these M. spretus LINE-1s transferred from M. spretus to M. m. Domesticus, it is now clear that at least two different spretus LINE-1 sequences have recently transferred. The limited divergence between the C57BL/6J spretus-like LINE-1s and their closest spretus ancestors suggests that the transfer did not involve an exceptionally long lineage of sequential transpositions.
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Mus spretus LINE-1s in the Mus Musculus Domesticus Inbred Strain C57BL/6J Are From Two Different Mus spretus LINE-1 Subfamilies
Genetics, 1996Co-Authors: Yingping Zhao, Lorrie P Daggett, Stephen C HardiesAbstract:A LINE-1 element, L1C105, was found in the Mus Musculus Domesticus inbred strain, C57BL/6J. Upon sequencing, this element was found to belong to a M. spretus LINE-1 subfamily originating within the last 0.2 million years. This is the second spretus-specific LINE-1 subfamily found to be represented in C57BL/6J. Although it is unclear how these M. spretus LINE-1s transferred from M. spretus to M. m. Domesticus, it is now clear that at least two different spretus LINE-1 sequences have recently transferred. The limited divergence between the C57BL/6J spretus-like LINE-1s and their closest spretus ancestors suggests that the transfer did not involve an exceptionally long lineage of sequential transpositions.
Jeremy B. Searle - One of the best experts on this subject based on the ideXlab platform.
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New metacentric population of the house mouse (Mus Musculus Domesticus) found in Valchiavenna, Northern Italy.
Cytogenetic and genome research, 2009Co-Authors: G. Burt, Heidi C. Hauffe, Jeremy B. SearleAbstract:Although the standard karyotype of the western house mouse (Mus Musculus Domesticus) consists entirely of telocentric chromosomes, there are over 100 populations across western Europe and North Africa characterized by different sets of metacentrics formed by Robertsonian fusions and whole-arm reciprocal translocations. Here we report the discovery of a new metacentric population from Valchiavenna, northern Italy, that we have named the ‘Lower Valchiavenna population’ (abbreviated as ILVC). This metacentric population is found in villages and on farms over a 10-kilometer stretch comprising the southern half of Valchiavenna. ILVC is characterized by the metacentrics 1.18, 2.4, 3.8, 5.15, 6.7, 9.14, 10.12, 11.13 and 16.17, and appears to be closely related to the Chiasso population (CHCH), which possesses the same set of metacentrics except 1.18. We discuss the evolutionary origin of ILVC in relation to human occupation of the region. We also suggest that the geographical position of ILVC between 2 other metacentric populations with entirely different sets of metacentrics (Chiavenna, ICHI, and lower Valtellina, ILVA) may provide 2 additional chromosomal hybrid zones for the study of speciation.
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Mitochondrial DNA variation in the western house mouse (Mus Musculus Domesticus) close to its site of origin: studies in Turkey
Biological Journal of the Linnean Society, 2005Co-Authors: İslam Gündüz, Ramugondo V. Rambau, Coşkun Tez, Jeremy B. SearleAbstract:In contrast to a substantial inventory of mitochondrial D-loop sequences from the West European part of the range of the western house mouse Mus Musculus Domesticus, there are few such data from close to the Middle Eastern origin of the subspecies. This paper attempts to rectify this situation, with details of D-loop sequences of 92 mice from 45 localities in Turkey, adding to the six mice from three localities previously studied from that country. The molecular data were found to be consistent with Turkey being close to the site of origin of M. m. Domesticus. The 54 Turkish haplotypes were distributed throughout a phylogenetic tree incorporating representative sequences described previously, and there was high nucleotide diversity among the Turkish mice. There was weak genetic structure in Turkey, although haplotypes of the 'Main Turkish Clade', while common over much of Turkey, were absent from Southern Anatolia. Haplotypes of the Main Turkish Clade were also found in western Europe and it is believed that they derived from Turkey, which thus represents one of the source areas for the westwards expansion of M. m. Domesticus.
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The effects of Robertsonian fusions on chiasma frequency and distribution in the house mouse (Mus Musculus Domesticus) from a hybrid zone in northern Scotland.
Heredity, 2001Co-Authors: Claudio J. Bidau, Mabel D. Giménez, Christianne L Palmer, Jeremy B. SearleAbstract:Chiasma frequency and distribution were studied in male Mus Musculus Domesticus from the John O’Groats–standard chromosomal hybrid zone in northern Scotland. Individuals of the John O’Groats race (2n=32; homozygous for the Robertsonian fusions 4.10, 6.13, 9.12 and 11.14) and the standard race (2n=40, all telocentric), and hybrids with various karyotypes, were examined. Chiasma frequency was significantly negatively correlated with the number of Robertsonian configurations in the meiotic cell. The decrease of chiasma frequency can be attributed to intrachromosomal effects that reduce the number of chiasmata in Robertsonian bivalents (formed in homozygotes for Robertsonian fusions) and trivalents (formed in heterozygotes). However, the reduction is more pronounced in Robertsonian bivalents and is related to a shift of chiasmata to the distal ends of the chromosome arms. A different type of repatterning occurs in trivalents where there is a significant increase in proximal and interstitial chiasmata.
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Chromosomal Heterozygosity and Fertility in House Mice (Mus Musculus Domesticus) From Northern Italy
Genetics, 1998Co-Authors: Heidi C. Hauffe, Jeremy B. SearleAbstract:Following the discovery of over 40 Robertsonian (Rb) races of Mus Musculus Domesticus in Europe and North Africa, the house mouse has been studied extensively as an ideal model to determine the chromosomal changes that may cause or accompany speciation. Current models of chromosomal speciation are based on the assumption that heterozygous individuals have a particularly low fertility, although recent studies indicate otherwise. Despite their importance, fertility estimates for the house mouse are incomplete because traditional measurements, such as anaphase I nondisjunction and germ cell death, are rarely estimated in conjunction with litter size. In an attempt to bridge this gap, we have taken advantage of the house mouse hybrid zone in Upper Valtellina (Lombardy, Italy) in which five Rb races interbreed. We present data on the fertility of naturally occurring (“wild-caught”) hybrids and of offspring from laboratory crosses of wild-caught mice (“laboratory-reared”), using various measurements. Wild-caught mice heterozygous for one fusion were more infertile than predicted from past studies, possibly due to genic hybridity; laboratory-reared heterozygotes carrying seven or eight trivalents at meiosis I and heterozygotes carrying one pentavalent also had low fertilities. These low fertilities are especially significant given the probable occurrence of a reinforcement event in Upper Valtellina.
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EXTREME KARYOTYPIC VARIATION IN A Mus MusCULUS Domesticus HYBRID ZONE: THE TOBACCO MOUSE STORY REVISITED.
Evolution; international journal of organic evolution, 1993Co-Authors: Heidi C. Hauffe, Jeremy B. SearleAbstract:The Robertsonian fusion is a common chromosomal mutation among mammal species and is especially prevalent in the West European house mouse, Mus Musculus Domesticus. More than 40 races of the house mouse exist in Europe, including the famous "tobacco mouse" (Poschiavo race) of Val Poschiavo, Switzerland. Documented here is the discovery of an extreme case of karyotypic variation in the neighboring Upper Valtellina, Italy. In a 20-km stretch of the valley, 32 karyotypes were observed, including five chromosomal races and 27 hybrid types. One previously unknown race is reported, the "Mid Valtellina" race, with a diploid number of 2n = 24 and the Robertsonian fusions Rb(1.3), Rb(4.6), Rb(5.15), Rb(7.18), Rb(8.12), Rb(9.14), Rb(1 1.13), and Rb(1 6.17). The Poschiavo race (2n = 26), Upper Valtellina race (2n = 24), Lower Valtellina race (2n = 22) and all-acrocentric race (2n = 40) were also present. The races form a patchy distribution, which we term a "mottled hybrid zone." Geographical position, isolation, extinction, recoloni- zation, and selection against hybrids are all believed to be instrumental in the origin and evolution of this complex system. Previous studies of house mice from Upper Valtellina indicated that two of the races in the valley (the Upper Valtellina and Poschiavo races) may have speciated in the village of Migiondo. We discuss the possibility that there may have been a reinforcement event in this village.
