1
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Renaud S, Amar L, Chevret P, Romestaing C, Quéré JP, Régis C, Lebrun R. Inner ear morphology in wild versus laboratory house mice. J Anat 2024; 244:722-738. [PMID: 38214368 PMCID: PMC11021637 DOI: 10.1111/joa.13998] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/31/2023] [Revised: 12/08/2023] [Accepted: 12/08/2023] [Indexed: 01/13/2024] Open
Abstract
The semicircular canals of the inner ear are involved in balance and velocity control. Being crucial to ensure efficient mobility, their morphology exhibits an evolutionary conservatism attributed to stabilizing selection. Release of selection in slow-moving animals has been argued to lead to morphological divergence and increased inter-individual variation. In its natural habitat, the house mouse Mus musculus moves in a tridimensional space where efficient balance is required. In contrast, laboratory mice in standard cages are severely restricted in their ability to move, which possibly reduces selection on the inner ear morphology. This effect was tested by comparing four groups of mice: several populations of wild mice trapped in commensal habitats in France; their second-generation laboratory offspring, to assess plastic effects related to breeding conditions; a standard laboratory strain (Swiss) that evolved for many generations in a regime of mobility reduction; and hybrids between wild offspring and Swiss mice. The morphology of the semicircular canals was quantified using a set of 3D landmarks and semi-landmarks analyzed using geometric morphometric protocols. Levels of inter-population, inter-individual (disparity) and intra-individual (asymmetry) variation were compared. All wild mice shared a similar inner ear morphology, in contrast to the important divergence of the Swiss strain. The release of selection in the laboratory strain obviously allowed for an important and rapid drift in the otherwise conserved structure. Shared traits between the inner ear of the lab strain and domestic pigs suggested a common response to mobility reduction in captivity. The lab-bred offspring of wild mice also differed from their wild relatives, suggesting plastic response related to maternal locomotory behavior, since inner ear morphology matures before birth in mammals. The signature observed in lab-bred wild mice and the lab strain was however not congruent, suggesting that plasticity did not participate to the divergence of the laboratory strain. However, contrary to the expectation, wild mice displayed slightly higher levels of inter-individual variation than laboratory mice, possibly due to the higher levels of genetic variance within and among wild populations compared to the lab strain. Differences in fluctuating asymmetry levels were detected, with the laboratory strain occasionally displaying higher asymmetry scores than its wild relatives. This suggests that there may indeed be a release of selection and/or a decrease in developmental stability in the laboratory strain.
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Affiliation(s)
- Sabrina Renaud
- Laboratoire de Biométrie et Biologie Evolutive (LBBE), UMR 5558, CNRS, Université Claude Bernard Lyon 1, Université de Lyon, Villeurbanne, France
| | - Léa Amar
- Laboratoire de Biométrie et Biologie Evolutive (LBBE), UMR 5558, CNRS, Université Claude Bernard Lyon 1, Université de Lyon, Villeurbanne, France
| | - Pascale Chevret
- Laboratoire de Biométrie et Biologie Evolutive (LBBE), UMR 5558, CNRS, Université Claude Bernard Lyon 1, Université de Lyon, Villeurbanne, France
| | - Caroline Romestaing
- Laboratoire d'Ecologie des Hydrosystèmes Naturels et Anthropisés (LEHNA), UMR 5023, CNRS, ENTPE, Université Claude Bernard Lyon 1, Université de Lyon, Villeurbanne, France
| | - Jean-Pierre Quéré
- Centre de Biologie et Gestion des Populations (INRA/IRD/Cirad/Montpellier SupAgro), Campus International de Baillarguet, Montferrier-sur-Lez Cedex, France
| | - Corinne Régis
- Laboratoire de Biométrie et Biologie Evolutive (LBBE), UMR 5558, CNRS, Université Claude Bernard Lyon 1, Université de Lyon, Villeurbanne, France
| | - Renaud Lebrun
- Institut des Sciences de l'Évolution (ISE-M), UMR 5554, CNRS/UM/IRD/EPHE, Université de Montpellier, Montpellier, France
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2
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Savriama Y, Romestaing C, Clair A, Averty L, Ulmann J, Ledevin R, Renaud S. Wild versus lab house mice: Effects of age, diet, and genetics on molar geometry and topography. J Anat 2022; 240:66-83. [PMID: 34333769 PMCID: PMC8655182 DOI: 10.1111/joa.13529] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/25/2021] [Revised: 07/20/2021] [Accepted: 07/20/2021] [Indexed: 11/30/2022] Open
Abstract
Molar morphology is shaped by phylogenetic history and adaptive processes related to food processing. Topographic parameters of the occlusal surface, such as sharpness and relief, can be especially informative regarding diet preferences of a species. The occlusal surface can however be deeply modified by wear throughout an animal's life, potentially obliterating other signals. Age being difficult to assess in wild populations, especially small rodents, experimental studies of wear through age in laboratory populations may constitute a powerful way to assess its impact on molar geometry and topography, and to validate descriptors of molar morphology that could mitigate this issue. Molar morphology was therefore quantified using 3D geometric morphometrics and topographic estimates in four groups of house mice: wild-trapped mice, lab-bred offspring of these wild mice, typical laboratory mice, and their hybrids. Three descriptors of the molar morphology were considered: the surface of the whole molar row, the surface of the first upper molar, and a truncated template of the first upper molar mimicking advanced wear. Increasing wear with age was demonstrated in the different groups, with a more pronounced effect in the wild-trapped population. The geometry of the molar row is not only modified by wear, but also by the relative position of the late developing molars on the jaw due to loading during mastication. As a consequence, the alignment of the molars is modified in wild mice, showing a qualitative difference between wild animals and their lab-bred offspring. Results obtained from the lab should thus be transferred with caution to the interpretation of differences in wild populations. Topographic estimates computed for the first upper molar seems to provide more stable parameters than those based on the whole molar row, because issues related to non-planar occlusal surface along the molar row are discarded. The truncated template was proven efficient in discarding the wear effect to focus on genetic differences, allowing an efficient characterization of the hybridization signature between wild and lab mice. Dominance of the wild phenotype for the first molar shape supports that the lab strain evolved in a context of relaxation of the selective pressures related to nutrition.
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Affiliation(s)
| | - Caroline Romestaing
- Laboratoire d'Écologie des Hydrosystèmes Naturels et Anthropisés (LEHNA)ENTPEUniversité de LyonUniversité Claude Bernard Lyon 1UMR 5023 CNRSVilleurbanneFrance
| | - Angéline Clair
- Plateforme Animalerie Conventionnelle et Sauvage Expérimentale de la Doua (ACSED)Fédération de Recherche 3728Université de LyonUniversité Claude Bernard Lyon 1CNRSENS‐LyonINRAEINSAVetAgroSupVilleurbanneFrance
| | - Laetita Averty
- Plateforme Animalerie Conventionnelle et Sauvage Expérimentale de la Doua (ACSED)Fédération de Recherche 3728Université de LyonUniversité Claude Bernard Lyon 1CNRSENS‐LyonINRAEINSAVetAgroSupVilleurbanneFrance
| | - Julie Ulmann
- Plateforme Animalerie Conventionnelle et Sauvage Expérimentale de la Doua (ACSED)Fédération de Recherche 3728Université de LyonUniversité Claude Bernard Lyon 1CNRSENS‐LyonINRAEINSAVetAgroSupVilleurbanneFrance
| | - Ronan Ledevin
- PACEAUMR 5199 CNRSUniversité de BordeauxPessacFrance
| | - Sabrina Renaud
- Laboratoire de Biométrie et Biologie EvolutiveUMR 5558CNRSUniversité Claude Bernard Lyon 1Université de LyonVilleurbanneFrance
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3
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Thioulouse J, Renaud S, Dufour AB, Dray S. Overcoming the Spurious Groups Problem in Between-Group PCA. Evol Biol 2021. [DOI: 10.1007/s11692-021-09550-0] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
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4
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Chevret P, Hautier L, Ganem G, Herman J, Agret S, Auffray JC, Renaud S. Genetic structure in Orkney island mice: isolation promotes morphological diversification. Heredity (Edinb) 2020; 126:266-278. [PMID: 32980864 DOI: 10.1038/s41437-020-00368-8] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/06/2020] [Revised: 09/04/2020] [Accepted: 09/04/2020] [Indexed: 11/09/2022] Open
Abstract
Following human occupation, the house mouse has colonised numerous islands, exposing the species to a wide variety of environments. Such a colonisation process, involving successive founder events and bottlenecks, may either promote random evolution or facilitate adaptation, making the relative importance of adaptive and stochastic processes in insular evolution difficult to assess. Here, we jointly analyse genetic and morphometric variation in the house mice (Mus musculus domesticus) from the Orkney archipelago. Genetic analyses, based on mitochondrial DNA and microsatellites, revealed considerable genetic structure within the archipelago, suggestive of a high degree of isolation and long-lasting stability of the insular populations. Morphometric analyses, based on a quantification of the shape of the first upper molar, revealed considerable differentiation compared to Western European populations, and significant geographic structure in Orkney, largely congruent with the pattern of genetic divergence. Morphological diversification in Orkney followed a Brownian motion model of evolution, suggesting a primary role for random drift over adaptation to local environments. Substantial structuring of human populations in Orkney has recently been demonstrated, mirroring the situation found here in house mice. This synanthropic species may thus constitute a bioproxy of human structure and practices even at a very local scale.
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Affiliation(s)
- Pascale Chevret
- Laboratoire de Biométrie et Biologie Evolutive, UMR 5558 CNRS Université Lyon 1, Université de Lyon, Campus de la Doua, 69100, Villeurbanne, France.
| | - Lionel Hautier
- Institut des Sciences de l'Evolution de Montpellier (ISEM), UMR 5554, Université de Montpellier, CNRS, EPHE, IRD, Montpellier, France
| | - Guila Ganem
- Institut des Sciences de l'Evolution de Montpellier (ISEM), UMR 5554, Université de Montpellier, CNRS, EPHE, IRD, Montpellier, France
| | - Jeremy Herman
- Department of Natural Sciences, National Museums Scotland, Chambers Street, Edinburgh, EH1 1JF, UK
| | - Sylvie Agret
- Institut des Sciences de l'Evolution de Montpellier (ISEM), UMR 5554, Université de Montpellier, CNRS, EPHE, IRD, Montpellier, France
| | - Jean-Christophe Auffray
- Institut des Sciences de l'Evolution de Montpellier (ISEM), UMR 5554, Université de Montpellier, CNRS, EPHE, IRD, Montpellier, France
| | - Sabrina Renaud
- Laboratoire de Biométrie et Biologie Evolutive, UMR 5558 CNRS Université Lyon 1, Université de Lyon, Campus de la Doua, 69100, Villeurbanne, France
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5
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Renaud S, Hardouin EA, Chevret P, Papayiannis K, Lymberakis P, Matur F, Garcia-Rodriguez O, Andreou D, Çetintaş O, Sözen M, Hadjisterkotis E, Mitsainas GP. Morphometrics and genetics highlight the complex history of Eastern Mediterranean spiny mice. Biol J Linn Soc Lond 2020. [DOI: 10.1093/biolinnean/blaa063] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
Abstract
Abstract
Spiny mice of the Acomys cahirinus group display a complex geographical structure in the Eastern Mediterranean area, as shown by previous genetic and chromosomal studies. To better elucidate the evolutionary relationships between insular populations from Crete and Cyprus and continental populations from North Africa and Cilicia in Turkey, genetic and morphometric variations were investigated, based on mitochondrial D-loop sequences, and the size and shape of the first upper molar. The Cypriot and the Cilician populations show idiosyncratic divergence in molar size and shape, while Cretan populations present a geographical structure with at least three differentiated subpopulations, as shown by congruent distributions of haplogroups, Robertsonian fusions and morphometric variation. A complex history of multiple introductions is probably responsible for this structure, and insular isolation coupled with habitat shift should have further promoted a pronounced and rapid morphological evolution in molar size and shape on Crete and Cyprus.
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Affiliation(s)
- Sabrina Renaud
- Laboratoire de Biométrie et Biologie Evolutive, UMR5558, CNRS, Université Claude Bernard Lyon 1, Université de Lyon, Campus de la Doua, Villeurbanne, France
| | - Emilie A Hardouin
- Department of Life and Environmental Sciences, Faculty of Science and Technology, Bournemouth University, Poole, Dorset, UK
| | - Pascale Chevret
- Laboratoire de Biométrie et Biologie Evolutive, UMR5558, CNRS, Université Claude Bernard Lyon 1, Université de Lyon, Campus de la Doua, Villeurbanne, France
| | - Katerina Papayiannis
- Archéozoologie – Archéobotanique, Société, Pratiques et Environnements (ASPE), UMR 7209 CNRS, Muséum National d’Histoire Naturelle, 55 rue Buffon, Paris, France
| | - Petros Lymberakis
- Natural History Museum of Crete, University of Crete, Heraklion, Crete, Greece
| | - Ferhat Matur
- Faculty of Science, Department of Biology, Dokuz Eylül University, Buca, Izmir, Turkey
| | - Oxala Garcia-Rodriguez
- Department of Life and Environmental Sciences, Faculty of Science and Technology, Bournemouth University, Poole, Dorset, UK
| | - Demetra Andreou
- Department of Life and Environmental Sciences, Faculty of Science and Technology, Bournemouth University, Poole, Dorset, UK
| | - Ortaç Çetintaş
- Department of Biology, Zonguldak Bulent Ecevit University, Zonguldak, Turkey
| | - Mustafa Sözen
- Department of Biology, Zonguldak Bulent Ecevit University, Zonguldak, Turkey
| | | | - George P Mitsainas
- Section of Animal Biology, Department of Biology, University of Patras, Patras, Greece
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6
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Chevret P, Renaud S, Helvaci Z, Ulrich RG, Quéré J, Michaux JR. Genetic structure, ecological versatility, and skull shape differentiation in
Arvicola
water voles (Rodentia, Cricetidae). J ZOOL SYST EVOL RES 2020. [DOI: 10.1111/jzs.12384] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Pascale Chevret
- Laboratoire de Biométrie et Biologie Evolutive UMR 5558 CNRS Université Claude Bernard Lyon 1Université de Lyon Villeurbanne France
| | - Sabrina Renaud
- Laboratoire de Biométrie et Biologie Evolutive UMR 5558 CNRS Université Claude Bernard Lyon 1Université de Lyon Villeurbanne France
| | - Zeycan Helvaci
- Conservation Genetics Laboratory Institut de Botanique Liège Belgium
| | - Rainer G. Ulrich
- Institute of Novel and Emerging Infectious Diseases Friedrich‐Loeffler‐Institut Federal Research Institute for Animal Health Greifswald ‐ Insel Riems Germany
| | - Jean‐Pierre Quéré
- Centre de Biologie et Gestion des Populations (INRA/IRD/Cirad/Montpellier SupAgro)Campus International de Baillarguet Montferrier‐sur‐Lez Cedex France
| | - Johan R. Michaux
- Conservation Genetics Laboratory Institut de Botanique Liège Belgium
- CIRAD/INRA UMR117 ASTRECampus International de Baillarguet Montpellier Cedex France
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7
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Renaud S, Delépine C, Ledevin R, Pisanu B, Quéré J, Hardouin EA. A sharp incisor tool for predator house mice back to the wild. J ZOOL SYST EVOL RES 2019. [DOI: 10.1111/jzs.12292] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Sabrina Renaud
- Laboratoire de Biométrie et Biologie Evolutive UMR5558 CNRS Université Lyon 1 Villeurbanne France
| | - Claire Delépine
- Laboratoire de Biométrie et Biologie Evolutive UMR5558 CNRS Université Lyon 1 Villeurbanne France
| | | | - Benoît Pisanu
- Centre d’Ecologie et des Sciences de la Conservation, UMR 7204, Sorbonne Universités Muséum National d’Histoire Naturelle, CNRS, Université Pierre et Marie Curie Paris France
| | - Jean‐Pierre Quéré
- Centre de Biologie et Gestion des Populations (INRA/IRD/Cirad/Montpellier SupAgro) Montferrier‐sur‐Lez Cedex France
| | - Emilie A. Hardouin
- Department of Life and Environmental Sciences, Faculty of Sciences and Technology Bournemouth University Poole UK
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8
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Souquet L, Chevret P, Ganem G, Auffray JC, Ledevin R, Agret S, Hautier L, Renaud S. Back to the wild: does feralization affect the mandible of non-commensal house mice (Mus musculus domesticus)? Biol J Linn Soc Lond 2019. [DOI: 10.1093/biolinnean/bly218] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022]
Affiliation(s)
- Louise Souquet
- Laboratoire de Biométrie et Biologie Evolutive, UMR 5558, Université Claude Bernard Lyon, CNRS, Villeurbanne cedex, France
| | - Pascale Chevret
- Laboratoire de Biométrie et Biologie Evolutive, UMR 5558, Université Claude Bernard Lyon, CNRS, Villeurbanne cedex, France
| | - Guila Ganem
- Institut des Sciences de l’Evolution, Université de Montpellier, UMR 5554 CNRS, IRD, EPHE, Place Eugène Bataillon, Montpellier cedex, France
| | - Jean-Christophe Auffray
- Institut des Sciences de l’Evolution, Université de Montpellier, UMR 5554 CNRS, IRD, EPHE, Place Eugène Bataillon, Montpellier cedex, France
| | - Ronan Ledevin
- Laboratoire de Biométrie et Biologie Evolutive, UMR 5558, Université Claude Bernard Lyon, CNRS, Villeurbanne cedex, France
| | - Sylvie Agret
- Institut des Sciences de l’Evolution, Université de Montpellier, UMR 5554 CNRS, IRD, EPHE, Place Eugène Bataillon, Montpellier cedex, France
| | - Lionel Hautier
- Institut des Sciences de l’Evolution, Université de Montpellier, UMR 5554 CNRS, IRD, EPHE, Place Eugène Bataillon, Montpellier cedex, France
| | - Sabrina Renaud
- Laboratoire de Biométrie et Biologie Evolutive, UMR 5558, Université Claude Bernard Lyon, CNRS, Villeurbanne cedex, France
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9
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Renaud S, Ledevin R, Pisanu B, Chapuis JL, Quillfeldt P, Hardouin EA. Divergent in shape and convergent in function: Adaptive evolution of the mandible in Sub-Antarctic mice. Evolution 2018. [PMID: 29528493 DOI: 10.1111/evo.13467] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
Abstract
Convergent evolution in similar environments constitutes strong evidence of adaptive evolution. Transported with people around the world, house mice colonized even remote areas, such as Sub-Antarctic islands. There, they returned to a feral way of life, shifting towards a diet enriched in terrestrial macroinvertebrates. Here, we test the hypothesis that this triggered convergent evolution of the mandible, a morphological character involved in food consumption. Mandible shape from four Sub-Antarctic islands was compared to phylogeny, tracing the history of colonization, and climatic conditions. Mandible shape was primarily influenced by phylogenetic history, thus discarding the hypothesis of convergent evolution. The biomechanical properties of the jaw were then investigated. Incisor in-lever and temporalis out-lever suggested an increase in the velocity of incisor biting, in agreement with observations on various carnivorous and insectivorous rodents. The mechanical advantage related to incisor biting also revealed an increased functional performance in Sub-Antarctic populations, and appears to be an adaptation to catch prey more efficiently. The amount of change involved was larger than expected for a plastic response, suggesting microevolutionary processes were evolved. This study thus denotes some degree of adaptive convergent evolution related to changes in habitat-related changes in dietary items in Sub-Antarctic mice, but only regarding simple, functionally relevant aspects of mandible morphology.
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Affiliation(s)
- Sabrina Renaud
- Laboratoire de Biométrie et Biologie Evolutive, UMR 5558, Université Lyon 1, CNRS, Campus de la Doua, F-69100 Villeurbanne, France
| | - Ronan Ledevin
- Laboratoire de Biométrie et Biologie Evolutive, UMR 5558, Université Lyon 1, CNRS, Campus de la Doua, F-69100 Villeurbanne, France.,Current Address: UMR5199 PACEA, Université de Bordeaux, Allée Geoffroy Saint Hilaire, Bâtiment B8, F-33615 Pessac, France
| | - Benoit Pisanu
- Centre d'Ecologie et des Sciences de la Conservation, UMR 7204, Sorbonne Universités, Muséum National d'Histoire Naturelle, CNRS, Université Pierre et Marie Curie, 61 rue Buffon, F-75005 Paris, France
| | - Jean-Louis Chapuis
- Centre d'Ecologie et des Sciences de la Conservation, UMR 7204, Sorbonne Universités, Muséum National d'Histoire Naturelle, CNRS, Université Pierre et Marie Curie, 61 rue Buffon, F-75005 Paris, France
| | - Petra Quillfeldt
- Justus-Liebig-Universität, AG Verhaltensökologie und Ökophysiologie der Tiere, Heinrich-Buff-Ring 38, D-35392 Giessen, Germany
| | - Emilie A Hardouin
- Department of Life and Environmental Sciences, Faculty of Sciences and Technology, Bournemouth University, Christchurch House, Talbot Campus, Poole, Dorset, BH12 5BB, United Kingdom
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10
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Geiger M, Sánchez-Villagra MR, Lindholm AK. A longitudinal study of phenotypic changes in early domestication of house mice. ROYAL SOCIETY OPEN SCIENCE 2018; 5:172099. [PMID: 29657805 PMCID: PMC5882729 DOI: 10.1098/rsos.172099] [Citation(s) in RCA: 26] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/05/2017] [Accepted: 01/31/2018] [Indexed: 05/24/2023]
Abstract
Similar phenotypic changes occur across many species as a result of domestication, e.g. in pigmentation and snout size. Experimental studies of domestication have concentrated on intense and directed selection regimes, while conditions that approximate the commensal and indirect interactions with humans have not been explored. We examine long-term data on a free-living population of wild house mice that have been indirectly selected for tameness by regular exposure to humans. In the course of a decade, this mouse population exhibited significantly increased occurrence of white patches of fur and decreased head length. These phenotypic changes fit to the predictions of the 'domestication syndrome'.
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Affiliation(s)
- Madeleine Geiger
- Palaeontological Institute and Museum, University of Zurich, Karl-Schmid-Strasse 4, 8006 Zurich, Switzerland
- Department of Zoology, University of Cambridge, Downing Street, Cambridge CB2 3EJ, UK
| | - Marcelo R. Sánchez-Villagra
- Palaeontological Institute and Museum, University of Zurich, Karl-Schmid-Strasse 4, 8006 Zurich, Switzerland
| | - Anna K. Lindholm
- Department of Evolutionary Biology and Environmental Studies, University of Zurich, Winterthurerstrasse 190, 8057 Zurich, Switzerland
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11
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Pallares LF, Ledevin R, Pantalacci S, Turner LM, Steingrimsson E, Renaud S. Genomic regions controlling shape variation in the first upper molar of the house mouse. eLife 2017; 6:29510. [PMID: 29091026 PMCID: PMC5679752 DOI: 10.7554/elife.29510] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/11/2017] [Accepted: 10/28/2017] [Indexed: 01/25/2023] Open
Abstract
Numerous loci of large effect have been shown to underlie phenotypic variation between species. However, loci with subtle effects are presumably more frequently involved in microevolutionary processes but have rarely been discovered. We explore the genetic basis of shape variation in the first upper molar of hybrid mice between Mus musculus musculus and M. m. domesticus. We performed the first genome-wide association study for molar shape and used 3D surface morphometrics to quantify subtle variation between individuals. We show that many loci of small effect underlie phenotypic variation, and identify five genomic regions associated with tooth shape; one region contained the gene microphthalmia-associated transcription factor Mitf that has previously been associated with tooth malformations. Using a panel of five mutant laboratory strains, we show the effect of the Mitf gene on tooth shape. This is the first report of a gene causing subtle but consistent variation in tooth shape resembling variation in nature.
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Affiliation(s)
- Luisa F Pallares
- Department of Evolutionary Genetics, Max-Planck Institute for Evolutionary Biology, Plön, Germany
| | - Ronan Ledevin
- Laboratoire de Biométrie et Biologie Evolutive, UMR5558, CNRS, University Lyon 1, Campus de la Doua, Villeurbanne, France
| | - Sophie Pantalacci
- ENS de Lyon, Univ Claude Bernard, CNRS UMR 5239, INSERM U1210, Laboratoire de Biologie et Modélisation de la Cellule, 15 parvis Descartes, F-69007, UnivLyon, Lyon, France
| | - Leslie M Turner
- Department of Evolutionary Genetics, Max-Planck Institute for Evolutionary Biology, Plön, Germany.,Department of Biology and Biochemistry, Milner Centre for Evolution, University of Bath, Bath, Unites States
| | - Eirikur Steingrimsson
- Department of Biochemistry and Molecular Biology, BioMedical Center, Faculty of Medicine, University of Iceland, Reykjavik, Iceland
| | - Sabrina Renaud
- Laboratoire de Biométrie et Biologie Evolutive, UMR5558, CNRS, University Lyon 1, Campus de la Doua, Villeurbanne, France
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