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Razmaitė V, Šiukščius A, Marašinskienė Š. Cranial Morphology of Lithuanian Indigenous Wattle Pigs and Their Hybrids with Wild Boar. Animals (Basel) 2023; 13:ani13091453. [PMID: 37174490 PMCID: PMC10177289 DOI: 10.3390/ani13091453] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/15/2023] [Revised: 04/12/2023] [Accepted: 04/20/2023] [Indexed: 05/15/2023] Open
Abstract
The diversity of domestic pig breeds and their hybridization increases the variety of phenotypes expressed in hybrids. The aim of this study was to quantify the differences of cranial morphologies between local Lithuanian Indigenous Wattle pigs and theirhybrids with wild boar. A total of sixteen craniometric measurements were performed on the lateral, ventral and dorsal sides of 71 skulls of Lithuanian Indigenous Wattle pigs and their hybrids, including 1/4 wild boar (WB), 1/2 wild boar and 3/4 wild boar genotypes. The weight of the skull was affected by the genotype, live weight and sex of the animal. The size of the skull, particularly related to skull length parameters, increased consistently with the increase of the wild boar proportion in the hybrids. However, the Sus scrofa genotype did not affect the skull height. Clear discrimination was possible between the local Lithuanian breed pigs and their hybrids with different proportions of wild boar and between individual groups of hybrids. The most correct classification was determined on the basis of the overall and length parameters of the crania. This could contribute to better management and utilization of hybrids.
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Affiliation(s)
- Violeta Razmaitė
- Department of Animal Breeding and Reproduction, Animal Science Institute, Lithuanian University of Health Sciences, R. Žebenkos 12, 82317 Baisogala, Lithuania
| | - Artūras Šiukščius
- Department of Animal Breeding and Reproduction, Animal Science Institute, Lithuanian University of Health Sciences, R. Žebenkos 12, 82317 Baisogala, Lithuania
| | - Šarūnė Marašinskienė
- Department of Animal Breeding and Reproduction, Animal Science Institute, Lithuanian University of Health Sciences, R. Žebenkos 12, 82317 Baisogala, Lithuania
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2
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Hecht EE, Barton SA, Rogers Flattery CN, Meza Meza A. The evolutionary neuroscience of domestication. Trends Cogn Sci 2023; 27:553-567. [PMID: 37087363 DOI: 10.1016/j.tics.2023.03.008] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/24/2023] [Revised: 03/17/2023] [Accepted: 03/22/2023] [Indexed: 04/24/2023]
Abstract
How does domestication affect the brain? This question has broad relevance. Domesticated animals play important roles in human society, and substantial recent work has addressed the hypotheses that a domestication syndrome links phenotypes across species, including Homo sapiens. Surprisingly, however, neuroscience research on domestication remains largely disconnected from current knowledge about how and why brains change in evolution. This article aims to bridge that gap. Examination of recent research reveals some commonalities across species, but ultimately suggests that brain changes associated with domestication are complex and variable. We conclude that interactions between behavioral, metabolic, and life-history selection pressures, as well as the role the role of experience and environment, are currently largely overlooked and represent important directions for future research.
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Affiliation(s)
- Erin E Hecht
- Department of Human Evolutionary Biology, Harvard University, 11 Divinity Avenue, Cambridge, MA 02171, USA.
| | - Sophie A Barton
- Department of Human Evolutionary Biology, Harvard University, 11 Divinity Avenue, Cambridge, MA 02171, USA
| | | | - Araceli Meza Meza
- Department of Human Evolutionary Biology, Harvard University, 11 Divinity Avenue, Cambridge, MA 02171, USA
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3
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Evin A, David L, Souron A, Mennecart B, Orliac M, Lebrun R. Size and shape of the semicircular canal of the inner ear: A new marker of pig domestication? JOURNAL OF EXPERIMENTAL ZOOLOGY. PART B, MOLECULAR AND DEVELOPMENTAL EVOLUTION 2022; 338:552-560. [PMID: 35226406 PMCID: PMC9790707 DOI: 10.1002/jez.b.23127] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 11/24/2021] [Revised: 01/24/2022] [Accepted: 02/03/2022] [Indexed: 12/30/2022]
Abstract
Domestication has led to many changes in domestic animal biology, including their anatomy. The shape of the inner ear, part of the mammalian ear, has been found particularly relevant for discriminating domesticated species, their hybrids or differentiating the wild and domestic populations of a single species. Here we assessed the use of the size and shape of the semicircular canals (SCC) of the inner ear as a marker of pig domestication. We studied a total of 63 petrosal bones belonging to wild boar (Sus scrofa, two populations) and domestic pigs (extensively and intensively reared specimens) that were µCT-scanned and from which the size and the shape of the inner ear were quantified through geometric morphometrics, analyzing the 3D coordinates of 6 landmarks and 60 sliding semilandmarks localized on the SCC and the common crus. The domestic pigs have larger SCC than the wild boar from which they also strongly differ in shape (correct cross validation of 95.5%, confidence interval: 92.3%-98.1%). Strong shape differences were detected between the two populations of wild boar, as well as a sexual size dimorphism. All together the results highlight the taxonomic discriminant power of the SCC of the inner ear shape, and its relevance for domestication studies.
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Affiliation(s)
- Allowen Evin
- ISEM, University of Montpellier, CNRS, EPHE, IRDMontpellierFrance
| | - Loïc David
- ISEM, University of Montpellier, CNRS, EPHE, IRDMontpellierFrance
| | - Antoine Souron
- University of Bordeaux, CNRS, MCC, PACEA, UMR 5199BordeauxFrance
| | | | - Maeva Orliac
- ISEM, University of Montpellier, CNRS, EPHE, IRDMontpellierFrance
| | - Renaud Lebrun
- ISEM, University of Montpellier, CNRS, EPHE, IRDMontpellierFrance
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Neaux D, Harbers H, Blanc B, Ortiz K, Locatelli Y, Herrel A, Debat V, Cucchi T. The effect of captivity on craniomandibular and calcaneal ontogenetic trajectories in wild boar. JOURNAL OF EXPERIMENTAL ZOOLOGY. PART B, MOLECULAR AND DEVELOPMENTAL EVOLUTION 2022; 338:575-585. [PMID: 35286754 DOI: 10.1002/jez.b.23130] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/26/2021] [Revised: 02/17/2022] [Accepted: 02/28/2022] [Indexed: 06/14/2023]
Abstract
Deciphering the plastic (i.e., nonheritable) changes induced by human control over wild animals in the archeological record is challenging. Previous studies detected morphological markers associated with captivity in the cranium, mandible, and calcaneus of adult wild boar (Sus scrofa) but the developmental trajectories leading up to these changes during ontogeny remain unknown. To assess the impact of growth in a captive environment on morphological structures during postnatal ontogeny, we used an experimental approach focusing on the same three structures and taxon. We investigated the form and size differences of captive-reared and wild-caught wild boar during growth using three-dimensional landmark-based geometric morphometrics. Our results provide evidence of an influence of captivity on the morphology of craniomandibular structures, as wild specimens are smaller than captive individuals at similar ages. The food resources inherent to anthropogenic environments may explain some of the observed differences between captive-reared and wild specimens. The calcaneus presents a different contrasted pattern of plasticity as captive and wild individuals differ in terms of form but not in terms of size. The physically more constrained nature of the calcaneus and the direct influence of mobility reduction on this bone may explain these discrepancies. These results provide new methodological perspectives for bioarchaeological approaches as they imply that the plastic mark of captivity can be observed in juvenile specimens in the same way it has been previously described in adults.
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Affiliation(s)
- Dimitri Neaux
- Archéozoologie, Archéobotanique: Sociétés, Pratiques et Environnements, UMR 7209, Muséum National d'Histoire Naturelle CNRS, Paris, France
- Laboratoire Paléontologie Evolution Paléoécosystèmes Paléoprimatologie, UMR 7262, Université de Poitiers CNRS, Poitiers, France
| | - Hugo Harbers
- Archéozoologie, Archéobotanique: Sociétés, Pratiques et Environnements, UMR 7209, Muséum National d'Histoire Naturelle CNRS, Paris, France
| | - Barbara Blanc
- Réserve Zoologique de la Haute-Touche, Muséum National d'Histoire Naturelle, Obterre, France
| | - Katia Ortiz
- Réserve Zoologique de la Haute-Touche, Muséum National d'Histoire Naturelle, Obterre, France
- Institut de Systématique, Evolution, Biodiversité, UMR 7205, Muséum National d'Histoire Naturelle CNRS UPMC EPHE, UA, Paris, France
| | - Yann Locatelli
- Réserve Zoologique de la Haute-Touche, Muséum National d'Histoire Naturelle, Obterre, France
- Physiologie de la Reproduction et des Comportements, UMR 7247, INRAE CNRS Université de Tours IFCE, Nouzilly, France
| | - Anthony Herrel
- Mécanismes Adaptatifs et Evolution, UMR 7179, Muséum National d'Histoire Naturelle CNRS, Paris, France
| | - Vincent Debat
- Institut de Systématique, Evolution, Biodiversité, UMR 7205, Muséum National d'Histoire Naturelle CNRS UPMC EPHE, UA, Paris, France
| | - Thomas Cucchi
- Archéozoologie, Archéobotanique: Sociétés, Pratiques et Environnements, UMR 7209, Muséum National d'Histoire Naturelle CNRS, Paris, France
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Pelletier M, Niinimäki S, Salmi AK. Influence of captivity and selection on limb long bone cross-sectional morphology of reindeer. J Morphol 2021; 282:1533-1556. [PMID: 34323317 DOI: 10.1002/jmor.21403] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/10/2021] [Revised: 07/09/2021] [Accepted: 07/22/2021] [Indexed: 11/10/2022]
Abstract
The emergence of pastoralism and animal husbandry has been a critical point in the history of human evolution. Beyond profound behavioural changes in domesticated animals compared to wild ones, characterising the morphological changes associated with domestication process remains challenging. Because reindeer (Rangifer tarandus) can be considered to still be in the early phases of the domestication process, the study of modern populations provides a unique opportunity to examine the impact of captivity and selective breeding on skeletal changes. In this work, we investigated the morphological changes in long limb bone cross-sections using 137 wild and domestic reindeer individuals bred in free-range, in captivity or used for racing and pulling. The shape and shaft cortical thickness of the six long limb bones (i.e., humerus, radioulna, metacarpal, femur, tibia and metatarsal) were measured using a 2D-geometric morphometrics approach taking into account subspecies, sex, body mass and lifestyle differences. These bones are important to understanding functional morphological changes because they can provide information on feeding and locomotor behaviours, as well as on body propulsion and weight bearing. Apart from the effects of taxonomy, etho-ecology and sex, we have found that captivity and selection induced important variations in the size and body mass of modern reindeer. Our results also showed that patterns of variation in cortical bone thickness of long limb bone cross-sections were strongly impacted by body mass and human-imposed restrictions in roaming. This demonstrates that bone cross-sections can provide information on changes in locomotor, reproductive and feeding behaviours induced by the domestication process. These results are valuable not only for (paleo) biologists studying the impact of captivity and selection in ungulates but also for archaeologists exploring the origins of domestication and early herding strategies.
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Affiliation(s)
- Maxime Pelletier
- Archaeology, History, Culture and Communication Studies, Faculty of Humanities, University of Oulu, Oulu, Finland
| | - Sirpa Niinimäki
- Archaeology, History, Culture and Communication Studies, Faculty of Humanities, University of Oulu, Oulu, Finland
| | - Anna-Kaisa Salmi
- Archaeology, History, Culture and Communication Studies, Faculty of Humanities, University of Oulu, Oulu, Finland
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6
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Balcarcel AM, Sánchez-Villagra MR, Segura V, Evin A. Singular patterns of skull shape and brain size change in the domestication of South American camelids. J Mammal 2021. [DOI: 10.1093/jmammal/gyaa135] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
Abstract
Abstract
Patterns of selection in South American camelids (Lamini) and their unique demographic history establish the llama and alpaca as remarkable cases of domestication among large herd animals. Skull shape is implicated in many changes reported between wild and domestic taxa. We apply 3D geometric morphometric methods to describe skull shape, form, and size, differences among the four species of Lamini. In so doing, we test if domesticated Lamini exhibit changes similar to those in other domesticated groups: not only in the skull, but also in brain and body size. In contrast to other domesticated artiodactyls, very little change has occurred in domestic alpacas and llamas compared to their wild counterparts. Nevertheless, their differences are statistically significant and include a flatter cranium, inclined palate and increased airorhynchy in the domestics. Selection pressures that contrast with those on other herd animals, as well as recent population bottlenecks, likely have influenced the morphological patterns we note in Lamini. High-resolution 3D morphospace allows skull size, shape, and form (shape + size), to discriminate all four species, with form providing the greatest separation. These results help differentiate morphologically the Lamini, which in nature are distinguished mainly by body size, and provide an additional tool to archaeologists for distinction of wild and domestic remains. Most of our shape analyses suggest a marginally closer relationship between the alpaca and vicuña, to the exclusion of the guanaco, supporting the genetic relationships for this group. The expected brain size change between wild and domestic populations is lower than previously thought, with a 15.4% reduction in llama, and 6.8% reduction in alpaca. This is the lowest reduction in brain size thus far reported among domesticated Artiodactyla.
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Affiliation(s)
- A M Balcarcel
- Palaeontological Institute and Museum, University of Zurich, Karl-Schmid-Strasse, Zurich, Switzerland
| | - M R Sánchez-Villagra
- Palaeontological Institute and Museum, University of Zurich, Karl-Schmid-Strasse, Zurich, Switzerland
| | - V Segura
- Unidad Ejecutora Lillo, Consejo Nacional de Investigaciones Científicas y Técnicas–Fundación Miguel Lillo, Miguel Lillo, San Miguel de Tucumán, Argentina
- Consejo Nacional de Investigaciones Científicas y Técnicas (CONICET), AAH Buenos Aires, Argentina
| | - A Evin
- Institut des sciences de l’évolution, Université de Montpellier, CNRS, IRD, EPHE, Montpellier Cedex, France
- Department of Archaeology, Classics and Egyptology, University of Liverpool, Abercromby Square, Liverpool, United Kingdom
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Geometric morphometric investigation of craniofacial morphological change in domesticated silver foxes. Sci Rep 2021; 11:2582. [PMID: 33510282 PMCID: PMC7843644 DOI: 10.1038/s41598-021-82111-9] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/13/2020] [Accepted: 01/13/2021] [Indexed: 11/21/2022] Open
Abstract
To test the effects of domestication on craniofacial skeletal morphology, we used three-dimensional geometric morphometrics (GM) along with linear and endocranial measurements to compare selected (domesticated) and unselected foxes from the Russian Farm-Fox Experiment to wild foxes from the progenitor population from which the farmed foxes are derived. Contrary to previous findings, we find that domesticated and unselected foxes show minimal differences in craniofacial shape and size compared to the more substantial differences between the wild foxes and both populations of farmed foxes. GM analyses and linear measurements demonstrate that wild foxes differ from farmed foxes largely in terms of less cranial base flexion, relatively expanded cranial vaults, and increased endocranial volumes. These results challenge the assumption that the unselected population of foxes kept as part of the Russian Farm-Fox experiment are an appropriate proxy for ‘wild’ foxes in terms of craniofacial morphology and highlight the need to include wild populations in further studies of domestication syndrome to disentangle the phenotypic effects of multiple selection pressures. These findings also suggest that marked increases in docility cannot be reliably diagnosed from shape differences in craniofacial skeletal morphology.
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Neaux D, Sansalone G, Lecompte F, Haruda A, Schafberg R, Cucchi T. Examining the effect of feralization on craniomandibular morphology in pigs, Sus scrofa (Artiodactyla: Suidae). Biol J Linn Soc Lond 2020. [DOI: 10.1093/biolinnean/blaa156] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/30/2023]
Abstract
Abstract
Feralization is the process by which domestic animals return to the wild and produce self-sustaining populations. It is often considered as a model in understanding the permanence of morphological changes associated with domestication; however, it is still unclear how much the release of anthropogenic selective pressures affects domestic traits. Here, we assessed the influence of feralization on the domestic morphological traits acquired through selective breeding using craniomandibular differences in shape and size between populations of feral pigs, wild boar and domestic pigs, using landmark-based geometric morphometrics. Our results suggest that numerous cranial and mandibular traits associated with domestication still exist in feral specimens, corroborating that domestication-induced changes in the shape of morphological elements are broadly maintained in feral populations. This is not the case for size variations, however, as the cranium is significantly smaller in feral pigs than in domesticated breeds, which could be due to the selective pressures associated with founding events. Our exploratory study, therefore, underlines the complexity of feral population history, the intricate influence of variations in genetic diversity, and novel selection pressures in the morphology of these groups. Future studies will need to expand the sample to take into account the diversity of morphotypes.
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Affiliation(s)
- Dimitri Neaux
- Archéozoologie, Archéobotanique: Sociétés, Pratiques et Environnements, UMR 7209, Muséum national d’Histoire naturelle CNRS, CP, Paris, France
- Laboratoire Paléontologie Evolution Paléoécosystèmes Paléoprimatologie, UMR 7262, Université de Poitiers CNRS, Poitiers, France
| | - Gabriele Sansalone
- Function, Evolution & Anatomy Research Laboratory, School of Environmental and Rural Science, University of New England, NSW, Armidale, Australia
- Department of Sciences, Roma Tre University, Rome, Italy
- Center for Evolutionary Ecology, Rome, Italy
| | - François Lecompte
- Plateforme Chirurgie et Imagerie pour la Recherche et l’Enseignement, INRAE, Nouzilly, France
| | - Ashleigh Haruda
- Central Natural Science Collections, Martin Luther University Halle-Wittenberg, Halle, Germany
| | - Renate Schafberg
- Central Natural Science Collections, Martin Luther University Halle-Wittenberg, Halle, Germany
| | - Thomas Cucchi
- Archéozoologie, Archéobotanique: Sociétés, Pratiques et Environnements, UMR 7209, Muséum national d’Histoire naturelle CNRS, CP, Paris, France
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Pelletier M, Kotiaho A, Niinimäki S, Salmi AK. Identifying early stages of reindeer domestication in the archaeological record: a 3D morphological investigation on forelimb bones of modern populations from Fennoscandia. ARCHAEOLOGICAL AND ANTHROPOLOGICAL SCIENCES 2020; 12:169. [PMID: 32704330 PMCID: PMC7366605 DOI: 10.1007/s12520-020-01123-0] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 03/23/2020] [Accepted: 06/19/2020] [Indexed: 06/11/2023]
Abstract
Reindeer herding probably developed during the Late Iron Age onwards and is still an important part of the subsistence and culture of many peoples in northern Eurasia. However, despite the importance of this husbandry in the history of these Arctic people, the period and place of the origin as well as the spread of domestic reindeer is still highly debated. Besides the existence of different breeding methods in these territories, identifying domesticated individuals in the archaeological record is complicated because reindeers are considered to still be in the early phases of the domestication process. Indeed, the traditional morphological markers used in zooarchaeology to decipher the domestication syndrome are hardly perceptible in these early stages. In this work, we propose solutions for identifying domestic reindeer bones using 3D geometric morphometrics on isolated elements from the long bones of the forelimb (i.e. humerus, radio-ulna and metacarpal). These bones are important to understand both the feeding behaviour and the mobility of reindeer, and the potential effect of load-carrying or draught in the case of domestic reindeer. We analysed 123 modern specimens from Fennoscandia, including the two interbreeding subspecies currently present in these territories: mountain reindeer (Rangifer tarandus tarandus) and forest reindeer (R.t. fennicus); and where the sex and the lifestyle were known (i.e. free-ranging, racing or draught and captive individuals). A good level of discrimination between the size and shape variables of the bones of the forelimb was found among both subspecies and sexes. Moreover, individuals bred in captivity had smaller bone elements and a thinner and more slender morphology than free-ranging individuals. This demonstrates that the long bones of the forelimb can provide information on changes in feeding and locomotor behaviour prompted by the domestication process, like control and/or reduction of mobility and food of individual reindeer by humans. This also demonstrates that analysis in 3D geometric morphometrics is useful in detecting reindeer incipient domestication markers. Our results can be used by archaeologists to trace the early stages of domestication from fossil reindeer remains, and aid in reconstructing the socio-economic changes of past Arctic populations over time.
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Affiliation(s)
- Maxime Pelletier
- Archaeology, History, Culture and Communication Studies, Faculty of Humanities, University of Oulu, Oulu, Finland
| | - Antti Kotiaho
- Department of Radiology, Oulu University Hospital, Oulu, Finland
| | - Sirpa Niinimäki
- Archaeology, History, Culture and Communication Studies, Faculty of Humanities, University of Oulu, Oulu, Finland
| | - Anna-Kaisa Salmi
- Archaeology, History, Culture and Communication Studies, Faculty of Humanities, University of Oulu, Oulu, Finland
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Gleeson BT. Masculinity and the Mechanisms of Human Self-Domestication. ADAPTIVE HUMAN BEHAVIOR AND PHYSIOLOGY 2020. [DOI: 10.1007/s40750-019-00126-z] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
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11
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Gabbianelli F, Alhaique F, Romagnoli G, Brancazi L, Piermartini L, Ottoni C, Valentini A, Chillemi G. Was the Cinta Senese Pig Already a Luxury Food in the Late Middle Ages? Ancient DNA and Archaeozoological Evidence from Central Italy. Genes (Basel) 2020; 11:genes11010085. [PMID: 31940807 PMCID: PMC7017058 DOI: 10.3390/genes11010085] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/10/2019] [Revised: 01/08/2020] [Accepted: 01/08/2020] [Indexed: 11/16/2022] Open
Abstract
The Cinta senese is a pig breed, highly esteemed for its meat and derived products, characterized by a black coat with a typical white “belt” and documented by scant iconography, since the 13th–14th century in Italy. A piece of pottery showing a Cinta pig was found in the Graffignano castle (Northern Latium, Italy) dated 15th–16th centuries, spurring us to investigate the diet of the inhabitants. Ancient DNA analysis was carried out on 21 pig specimens on three nuclear SNPs: (1) g.43597545C>T, on the KIT gene, informative for the identification of the Cinta senese breed; (2) rs81460129, on an intergenic region in chr. 16, which discriminates between domestic pigs and wild boars, and; (3) a SNP on the ZFY/ZFX homologous genes, to determine the sex of the individuals. Our results indicate that the Cinta senese was present in Northern Latium in Late Medieval time, although it was not the only breed, and that pigs, including Cinta, interbred with wild boars, suggesting free-range breeding for all types of pigs. Moreover, the unexpected high proportion of young females may be considered as evidence for the wealth of the family inhabiting the castle.
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Affiliation(s)
- Federica Gabbianelli
- DIBAF, University of Tuscia, 01100 Viterbo, Italy;
- Correspondence: (F.G.); (G.C.)
| | | | | | - Luca Brancazi
- PhD School of Archaeology, Post-Classical Archaeology, Sapienza University, 00118 Rome, Italy;
| | | | - Claudio Ottoni
- Department of Oral and Maxillofacial Sciences, Diet and Ancient Technology Laboratory (DANTE), Sapienza University, 00118 Rome, Italy;
| | | | - Giovanni Chillemi
- DIBAF, University of Tuscia, 01100 Viterbo, Italy;
- Institute of Biomembranes, Bioenergetics and Molecular Biotechnologies, IBIOM, CNR, 70121 Bari, Italy
- Correspondence: (F.G.); (G.C.)
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Heck L, Sanchez-Villagra MR, Stange M. Why the long face? Comparative shape analysis of miniature, pony, and other horse skulls reveals changes in ontogenetic growth. PeerJ 2019; 7:e7678. [PMID: 31576240 PMCID: PMC6752190 DOI: 10.7717/peerj.7678] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/12/2019] [Accepted: 08/15/2019] [Indexed: 12/15/2022] Open
Abstract
Background Much of the shape variation found in animals is based on allometry and heterochrony. Horses represent an excellent model to investigate patterns of size-shape variation among breeds that were intentionally bred for extreme small and large sizes. Methods We tested whether ponies (wither height < 148 cm) have a diverging size-shape relationship in skull shape as compared to regular-sized horse breeds (wither height > 148 cm, here-after called horses) during ontogenetic growth. We used a dataset of 194 specimens from 25 horse and 13 pony breeds, two of which are miniature breeds (wither height < 96.5 cm)—Falabella, Shetland. We applied three-dimensional geometric morphometrics, linear measurements, and multivariate analyses (Procrustes ANOVAs) to quantitatively examine and compare the ontogenetic trajectories between pony and horse breeds with an emphasis on the miniature breeds as an extreme case of artificial selection on size. Additionally, we tested for juvenile characteristics in adult horse and miniature breeds that could resemble “paedomorphosis”—retention of juvenile characteristics in adult stage; e.g. large eyes, large braincase-to-face-relationship, and large head-to-body relationship. Results Allometric regression of size on shape revealed that 42% of shape variation could be explained by variation in size in all breeds. The ontogenetic trajectories of ponies and horses vary in slope and therefore in rate of change per unit size, and length. The differences in trajectory lengths and slopes result in ponies having a similar skull shape in an older age stage than horses of the same size in a younger age stage. This pattern could cause the generally perceived “paedomorphic” appearance of ponies. Miniature breeds have larger heads in relation to wither height compared to horses, a non-paedomorphic feature in horses specifically. Also, rostra (faces) are longer in adult individuals than in juveniles across all kinds of breeds. This pattern can be explained by the long-face hypothesis for grazing ungulates and could possibly be caused by the mismatch of selection by humans for shorter rostra and the dentition of ruminants. Conclusions Miniature breed specimens do not exhibit any of the classical mammalian “paedomorphic” features (large orbits, large heads), except for the adult Falabella that has enlarged orbits, possibly because they are herbivorous ungulates that are affected by functional and metabolic constraints related to low nutrient-food consumption. Instead ponies, including miniature breeds, have faster and shorter ontogenetic growth compared to horses, resulting in adult pony skulls looking in part like juvenile horse skulls.
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Affiliation(s)
- Laura Heck
- Palaeontologisches Institut und Museum, University of Zürich, Zürich, Switzerland
| | | | - Madlen Stange
- Department of Biology & Redpath Museum, McGill University, Montréal, Quebec, Canada
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Núñez‐León D, Aguirre‐Fernández G, Steiner A, Nagashima H, Jensen P, Stoeckli E, Schneider RA, Sánchez‐Villagra MR. Morphological diversity of integumentary traits in fowl domestication: Insights from disparity analysis and embryonic development. Dev Dyn 2019; 248:1044-1058. [DOI: 10.1002/dvdy.105] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/13/2019] [Revised: 08/01/2019] [Accepted: 08/13/2019] [Indexed: 12/18/2022] Open
Affiliation(s)
- Daniel Núñez‐León
- Paläontologisches Institut und Museum, Universität Zürich Zürich Switzerland
| | | | - Andrea Steiner
- Paläontologisches Institut und Museum, Universität Zürich Zürich Switzerland
| | - Hiroshi Nagashima
- Division of Gross Anatomy and MorphogenesisNiigata University Graduate School of Medical and Dental Sciences Niigata Japan
| | - Per Jensen
- IFM Biologi, AVIAN Behavioural Genomics and Physiology GroupLinköping University Linköping Sweden
| | - Esther Stoeckli
- Institute of Molecular Life Sciences, University of Zurich Zurich Switzerland
| | - Richard A. Schneider
- Department of Orthopaedic SurgeryUniversity of California San Francisco California
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Evidence of large genetic influences on dog ownership in the Swedish Twin Registry has implications for understanding domestication and health associations. Sci Rep 2019; 9:7554. [PMID: 31101867 PMCID: PMC6525200 DOI: 10.1038/s41598-019-44083-9] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/13/2018] [Accepted: 05/09/2019] [Indexed: 11/09/2022] Open
Abstract
Dogs were the first domesticated animal and, according to the archaeological evidence, have had a close relationship with humans for at least 15,000 years. Today, dogs are common pets in our society and have been linked to increased well-being and improved health outcomes in their owners. A dog in the family during childhood is associated with ownership in adult life. The underlying factors behind this association could be related to experiences or to genetic influences. We aimed to investigate the heritability of dog ownership in a large twin sample including all twins in the Swedish Twin Registry born between 1926 and 1996 and alive in 2006. Information about dog ownership was available from 2001 to 2016 from national dog registers. The final data set included 85,542 twins from 50,507 twin pairs with known zygosity, where information on both twins were available in 35,035 pairs. Structural equation modeling was performed to estimate additive genetic effects (the heritability), common/shared environmental, and unique/non-shared environmental effects. We found that additive genetic factors largely contributed to dog ownership, with heritability estimated at 57% for females and 51% for males. An effect of shared environmental factors was only observed in early adulthood. In conclusion, we show a strong genetic contribution to dog ownership in adulthood in a large twin study. We see two main implications of this finding: (1) genetic variation may have contributed to our ability to domesticate dogs and other animals and (2) potential pleiotropic effects of genetic variation affecting dog ownership should be considered in studies examining health impacts of dog ownership.
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Sánchez‐Villagra MR, van Schaik CP. Evaluating the self‐domestication hypothesis of human evolution. Evol Anthropol 2019; 28:133-143. [DOI: 10.1002/evan.21777] [Citation(s) in RCA: 43] [Impact Index Per Article: 8.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/01/2018] [Revised: 12/12/2018] [Accepted: 03/03/2019] [Indexed: 12/17/2022]
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Usui K, Tokita M. Creating diversity in mammalian facial morphology: a review of potential developmental mechanisms. EvoDevo 2018; 9:15. [PMID: 29946416 PMCID: PMC6003202 DOI: 10.1186/s13227-018-0103-4] [Citation(s) in RCA: 19] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/26/2018] [Accepted: 05/25/2018] [Indexed: 12/22/2022] Open
Abstract
Mammals (class Mammalia) have evolved diverse craniofacial morphology to adapt to a wide range of ecological niches. However, the genetic and developmental mechanisms underlying the diversification of mammalian craniofacial morphology remain largely unknown. In this paper, we focus on the facial length and orofacial clefts of mammals and deduce potential mechanisms that produced diversity in mammalian facial morphology. Small-scale changes in facial morphology from the common ancestor, such as slight changes in facial length and the evolution of the midline cleft in some lineages of bats, could be attributed to heterochrony in facial bone ossification. In contrast, large-scale changes of facial morphology from the common ancestor, such as a truncated, widened face as well as the evolution of the bilateral cleft possessed by some bat species, could be brought about by changes in growth and patterning of the facial primordium (the facial processes) at the early stages of embryogenesis.
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Affiliation(s)
- Kaoru Usui
- Department of Biology, Faculty of Science, Toho University, 2-2-1 Miyama, Funabashi, Chiba 274-8510 Japan
| | - Masayoshi Tokita
- Department of Biology, Faculty of Science, Toho University, 2-2-1 Miyama, Funabashi, Chiba 274-8510 Japan
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17
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Geiger M, Sánchez-Villagra MR. Similar rates of morphological evolution in domesticated and wild pigs and dogs. Front Zool 2018; 15:23. [PMID: 29796043 PMCID: PMC5966889 DOI: 10.1186/s12983-018-0265-x] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/29/2017] [Accepted: 04/10/2018] [Indexed: 12/30/2022] Open
Abstract
Background Whether the great morphological disparity of domesticated forms is the result of uniformly higher evolutionary rates compared to the wild populations is debated. We provide new data on changes of skull dimensions within historical time periods in wild and domesticated dogs and pigs to test if domestication might lead to an accelerated tempo of evolution in comparison to the wild conspecifics. Darwins and Haldanes were used to quantify evolutionary rates. Comparisons with evolutionary rates in other species and concerning other characteristics from the literature were conducted. Results Newly gathered and literature data show that most skull dimensions do not change faster in domesticated breeds than in wild populations, although it is well known that there is extensive artificial selection on skull shape in some dog breeds. Evolutionary rates among domesticated forms and traits (e.g., production traits in pigs, and racing speed in some horses and greyhounds) might vary greatly with species and breeding aim. Conclusions Our study shows that evolutionary rates in domestication are not in any event faster than those in the wild, although they are often perceived as such given the vast changes that appear in a relatively short period of time. This may imply that evolution under natural conditions – i.e., without human intervention – is not as slow as previously described, for example by Darwin. On the other hand, our results illustrate how diverse domestication is in tempo, mode, and processes involved. Electronic supplementary material The online version of this article (10.1186/s12983-018-0265-x) contains supplementary material, which is available to authorized users.
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Affiliation(s)
- Madeleine Geiger
- 1Universität Zürich, Paläontologisches Institut und Museum, Karl-Schmid-Strasse 4, 8006 Zürich, Switzerland.,2Department of Zoology, University of Cambridge, Downing Street, Cambridge, CB2 3EJ UK
| | - Marcelo R Sánchez-Villagra
- 1Universität Zürich, Paläontologisches Institut und Museum, Karl-Schmid-Strasse 4, 8006 Zürich, Switzerland
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18
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Abstract
Morphological divergence of domesticated as compared to wild forms must result from changes in the ontogenetic process. Species-specific tests for heterochrony have rejected a single explanation of domestic forms representing juveniles of their wild relatives. Ontogenetic allometric trajectories for 12 pairs of wild and domestic mammals were examined using skull growth data for 1070 specimens, including representatives from all lineages in which domestication has occurred. A suite of tests were performed to quantify allometric disparity in wild and domestic forms and assess the extent and patterning of modification to allometric trajectories. Domestication has modified postnatal ontogenetic allometric trajectories in mammals, and has generated disparity, achieved through lengthening of trajectory slopes and alteration to slope angles. Allometric disparity was similar for domestic forms compared to their wild relatives, whereas the magnitude of dispersion along allometric vectors differed between precocial mammals and altricial mammals, underscoring the importance of life history and shared evolutionary history in patterns of ontogenetic variation. The results verify the importance of scaling in the morphological changes associated with domestication. The response to domestication for all measured trajectory parameters was variable across species, suggesting multiple pathways of change.
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Affiliation(s)
- Laura A B Wilson
- School of Biological, Earth and Environmental Sciences, University of New South Wales, Sydney, NSW, 2052, Australia
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Evin A, Owen J, Larson G, Debiais-Thibaud M, Cucchi T, Vidarsdottir US, Dobney K. A test for paedomorphism in domestic pig cranial morphology. Biol Lett 2017; 13:rsbl.2017.0321. [PMID: 28794276 PMCID: PMC5582111 DOI: 10.1098/rsbl.2017.0321] [Citation(s) in RCA: 24] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/23/2017] [Accepted: 07/13/2017] [Indexed: 11/12/2022] Open
Abstract
Domestic animals are often described as paedomorphic, meaning that they retain juvenile characteristics into adulthood. Through a three-dimensional landmark-based geometric morphometric analysis of cranial morphology at three growth stages, we demonstrate that wild boar (n = 138) and domestic pigs (n = 106) (Sus scrofa) follow distinct ontogenetic trajectories. With the exception of the size ratio between facial and neurocranial regions, paedomorphism does not appear to be the primary pattern describing the observed differences between wild and domestic pig cranial morphologies. The cranial phenotype of domestic pigs instead involves developmental innovation during domestication. This result questions the long-standing assumption that domestic animal phenotypes are paedomorphic forms of their wild counterparts.
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Affiliation(s)
- Allowen Evin
- Institut des Sciences de l'Evolution, Université de Montpellier, CNRS, IRD, EPHE, 2 Place Eugène Bataillon, 34095 Montpellier cedex 05, France .,Department of Archaeology, University of Aberdeen, St Mary's, Elphinstone Road, Aberdeen AB24 3UF, UK.,Department of Archaeology, Classics and Egyptology, University of Liverpool, 12-14 Abercromby Square, Liverpool L69 7WZ, UK
| | - Joseph Owen
- Department of Archaeology, University of Aberdeen, St Mary's, Elphinstone Road, Aberdeen AB24 3UF, UK .,Department of Archaeology, Simon Fraser University, Education Building 9635, 8888 University Dr Burnaby, Burnaby, British Columbia, Canada V5A 1S6
| | - Greger Larson
- Palaeogenomics and Bio-Archaeology Research Network, Research Laboratory for Archaeology and the History of Art, University of Oxford, Dyson Perrins Building, South Parks Road, Oxford OX1 3QY, UK
| | - Mélanie Debiais-Thibaud
- Institut des Sciences de l'Evolution, Université de Montpellier, CNRS, IRD, EPHE, 2 Place Eugène Bataillon, 34095 Montpellier cedex 05, France
| | - Thomas Cucchi
- Department of Archaeology, University of Aberdeen, St Mary's, Elphinstone Road, Aberdeen AB24 3UF, UK.,UMR 7209, CNRS-Muséum National d'Histoire Naturelle, Archéozoologie, Archéobotanique: sociétés, pratiques et environnements, 55 rue Buffon, 75005 Paris, France
| | - Una Strand Vidarsdottir
- Biomedical Center, University of Iceland, Læknagarði, Vatnsmýrarvegi 16, 101 Reykjavik, Iceland
| | - Keith Dobney
- Department of Archaeology, University of Aberdeen, St Mary's, Elphinstone Road, Aberdeen AB24 3UF, UK.,Department of Archaeology, Classics and Egyptology, University of Liverpool, 12-14 Abercromby Square, Liverpool L69 7WZ, UK.,Department of Archaeology, Simon Fraser University, Education Building 9635, 8888 University Dr Burnaby, Burnaby, British Columbia, Canada V5A 1S6
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Sánchez-Villagra MR, Segura V, Geiger M, Heck L, Veitschegger K, Flores D. On the lack of a universal pattern associated with mammalian domestication: differences in skull growth trajectories across phylogeny. ROYAL SOCIETY OPEN SCIENCE 2017; 4:170876. [PMID: 29134088 PMCID: PMC5666271 DOI: 10.1098/rsos.170876] [Citation(s) in RCA: 24] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/10/2017] [Accepted: 09/11/2017] [Indexed: 05/19/2023]
Abstract
As shown in a taxonomically broad study, domestication modifies postnatal growth. Skull shape across 1128 individuals was characterized by 14 linear measurements, comparing 13 pairs of wild versus domesticated forms. Among wild forms, the boar, the rabbit and the wolf have the highest proportion of allometric growth, explaining in part the great morphological diversity of the domesticated forms of these species. Wild forms exhibit more isometric growth than their domesticated counterparts. Multivariate comparisons show that dogs and llamas exhibit the greatest amount of differences in trajectories with their wild counterparts. The least amount is recorded in the pig-boar, and camel and horse pairs. Bivariate analyses reveal that most domesticated forms have growth trajectories different from their respective wild counterparts with regard to the slopes. In pigs and camels slopes are shared and intercepts are different. There is a trajectory extension in most domesticated herbivores and the contrary pattern in carnivorous forms. However, there is no single, universal and global pattern of paedomorphosis or any other kind of heterochrony behind the morphological diversification that accompanies domestication.
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Affiliation(s)
- Marcelo R. Sánchez-Villagra
- Palaeontological Institute and Museum, University of Zurich, Karl-Schmid-Strasse 4, 8006 Zurich, Switzerland
- Author for correspondence: Marcelo R. Sánchez-Villagra e-mail:
| | - Valentina Segura
- Unidad Ejecutora Lillo, Consejo Nacional de Investigaciones Científicas y Técnicas-Fundación Miguel Lillo, Argentina
| | - 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
| | - Laura Heck
- Palaeontological Institute and Museum, University of Zurich, Karl-Schmid-Strasse 4, 8006 Zurich, Switzerland
| | - Kristof Veitschegger
- Palaeontological Institute and Museum, University of Zurich, Karl-Schmid-Strasse 4, 8006 Zurich, Switzerland
| | - David Flores
- Unidad Ejecutora Lillo, Consejo Nacional de Investigaciones Científicas y Técnicas-Fundación Miguel Lillo, Argentina
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