ArticleJournal of experimental zoology. Part B, Molecular and developmental evolution2022
Size and shape of the semicircular canal of the inner ear: A new marker of pig domestication?
Article in Journal of experimental zoology. Part B, Molecular and developmental evolution, 2022. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 9 papers.
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9 citing papers in PubMed, 16 citations in OpenAlex.
- Bony labyrinth taxonomic identification and long-term evolution of livestock in the Southwest and Central Asia.Royal Society open science · 2026Article
- Integrated mitogenome and Y chromosome analysis untangles the complex origin of African pigs.iScience · 2026Article
- Morphometric study of the bony labyrinth of the inner ear in the European moles Talpa europaea, Talpa occidentalis, and Talpa aquitania.Journal of anatomy · 2026Article
- Article
- Inner ear morphology in wild versus laboratory house mice.Journal of anatomy · 2024Article
- Insular dwarfism in horses from the Aegean Sea and the Japanese archipelago.Mammalian biology = Zeitschrift fur Saugetierkunde · 2024Article
- Ruminant inner ear shape records 35 million years of neutral evolution.Nature communications · 2022Article
- 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 · 2022Article
- New fossils from Kromdraai and Drimolen, South Africa, and their distinctiveness among Paranthropus robustus.Scientific reports · 2022Article
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Authors and funding
6 authors at 2 institutions in 2 countries.
Funding
No grant is acknowledged in the PubMed record.
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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