ArticleRoyal Society open science2018
Morphological variation under domestication: how variable are chickens?
Article in Royal Society open science, 2018. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 16 papers.
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16 citing papers in PubMed, 39 citations in OpenAlex.
- Neural crest cell biology shapes lizard skull evolution across evolutionary time scales.Evolution letters · 2026Article
- Explaining Global Turkey Biometric Diversity Through Principal Component Analysis.Animals : an open access journal from MDPI · 2025Article
- Comprehensive Evaluation of Probiotic Effects on Laying Hen Physiology: From Performance to Bone and Gut Morphology.Animals : an open access journal from MDPI · 2025Article
- From wild to domestic and in between: how domestication and feralization changed the morphology of rabbits.Proceedings. Biological sciences · 2025Article
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- Size and shape of the neurocranium of laying chicken breeds.Poultry science · 2024Article
- Cranial form differences in goats by breed and domestic status.Scientific reports · 2024Article
- Dumbbell-shaped brains of Polish crested chickens as a model system for the evolution of novel brain morphologies.Journal of anatomy · 2023Article
- An analysis of the maxillary beak shape variation between 2 pure layer lines and its relationship to the underlying premaxillary bone, feather cover, and mortality.Poultry science · 2023Article
- Developmental origin underlies evolutionary rate variation across the placental skull.Philosophical transactions of the Royal Society of London. Series B, Biological sciences · 2023Article
- Article
- Positive selection of skeleton-related genes during duck domestication revealed by whole genome sequencing.BMC ecology and evolution · 2021Article
- Modularity patterns in mammalian domestication: Assessing developmental hypotheses for diversification.Evolution letters · 2021Article
- Shifts in growth, but not differentiation, foreshadow the formation of exaggerated forms under chicken domestication.Proceedings. Biological sciences · 2021Article
- Intensive human contact correlates with smaller brains: differential brain size reduction in cattle types.Proceedings. Biological sciences · 2021Article
- Article
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Authors and funding
5 authors at 3 institutions in 3 countries.
Funding
No grant is acknowledged in the PubMed record.
Abstract
The process of domestication has long fascinated evolutionary biologists, yielding insights into the rapidity with which selection can alter behaviour and morphology. Previous studies on dogs, cattle and pigeons have demonstrated that domesticated forms show greater magnitudes of morphological variation than their wild ancestors. Here, we quantify variation in skull morphology, modularity and integration in chickens and compare those to the wild fowl using three-dimensional geometric morphometrics and multivariate statistics. Similar to other domesticated species, chickens exhibit a greater magnitude of variation in shape compared with their ancestors. The most variable part of the chicken skull is the cranial vault, being formed by dermal and neural crest-derived bones, its form possibly related to brain shape variation in chickens, especially in crested breeds. Neural crest-derived portions of the skull exhibit a higher amount of variation. Further, we find that the chicken skull is strongly integrated, confirming previous studies in birds, in contrast to the presence of modularity and decreased integration in mammals.
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