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Morphological diversity of integumentary traits in fowl domestication: Insights from disparity analysis and embryonic development


Núñez-León, Daniel; Aguirre-Fernández, Gabriel; Steiner, Andrea; Nagashima, Hiroshi; Jensen, Per; Stoeckli, Esther; Schneider, Richard A; Sánchez-Villagra, Marcelo R (2019). Morphological diversity of integumentary traits in fowl domestication: Insights from disparity analysis and embryonic development. Developmental Dynamics, 248(11):1044-1058.

Abstract

The domestication of the fowl resulted in a large diversity of integumental structuresin chicken breeds. Several integumental traits have been investigated from a develop-mental genetics perspective. However, their distribution among breeds and their devel-opmental morphology remain unexplored. We constructed a discrete trait-breedmatrix and conducted a disparity analysis to investigate the variation of these struc-tures in chicken breeds; 20 integumental traits of 72 chicken breeds and the redjunglefowl were assessed. The analyses resulted in slight groupings of breed typescomparable to standard breed classification based on artificial selection and chickentype use. The red junglefowl groups together with bantams and European breeds. Weprovide new data on the red junglefowl and four chicken breeds, demonstrating whereand when variation arises during embryonic development. We document variation indevelopmental timing of the egg tooth and feather formation, as well as other kinds ofdevelopmental patterning as in the anlagen of different type of combs. Changes inepithelial-mesenchymal signaling interactions may drive the highly diverse integu-ment in chickens. Experimental and comparative work has revealed that the cranialneural crest mesenchyme mediates its interactions with the overlying epithelium andis the likely source of patterning that generates diversity in integumental structures.KEYWORDSchicken, comb, egg tooth, embryology, evo-devo, feathers, morphospace

Abstract

The domestication of the fowl resulted in a large diversity of integumental structuresin chicken breeds. Several integumental traits have been investigated from a develop-mental genetics perspective. However, their distribution among breeds and their devel-opmental morphology remain unexplored. We constructed a discrete trait-breedmatrix and conducted a disparity analysis to investigate the variation of these struc-tures in chicken breeds; 20 integumental traits of 72 chicken breeds and the redjunglefowl were assessed. The analyses resulted in slight groupings of breed typescomparable to standard breed classification based on artificial selection and chickentype use. The red junglefowl groups together with bantams and European breeds. Weprovide new data on the red junglefowl and four chicken breeds, demonstrating whereand when variation arises during embryonic development. We document variation indevelopmental timing of the egg tooth and feather formation, as well as other kinds ofdevelopmental patterning as in the anlagen of different type of combs. Changes inepithelial-mesenchymal signaling interactions may drive the highly diverse integu-ment in chickens. Experimental and comparative work has revealed that the cranialneural crest mesenchyme mediates its interactions with the overlying epithelium andis the likely source of patterning that generates diversity in integumental structures.KEYWORDSchicken, comb, egg tooth, embryology, evo-devo, feathers, morphospace

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Additional indexing

Item Type:Journal Article, refereed, original work
Communities & Collections:07 Faculty of Science > Institute of Molecular Life Sciences
07 Faculty of Science > Paleontological Institute and Museum
Dewey Decimal Classification:560 Fossils & prehistoric life
Uncontrolled Keywords:Developmental Biology
Language:English
Date:1 November 2019
Deposited On:08 Nov 2019 15:41
Last Modified:23 Jan 2020 16:23
Publisher:Wiley-Blackwell Publishing, Inc.
ISSN:1058-8388
OA Status:Closed
Free access at:Publisher DOI. An embargo period may apply.
Publisher DOI:https://doi.org/10.1002/dvdy.105
Official URL:https://anatomypubs.onlinelibrary.wiley.com/doi/10.1002/dvdy.105
Project Information:
  • : FunderSNSF
  • : Grant ID31003A_169395
  • : Project TitleThe developmental bases of variation in mammalian domestication: comparative ontogenetic and experimental approaches

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