The integumental appendages of the turtle shell: An evo-devo perspective

Jacqueline Moustakas-Verho, Gennadii Cherepanov

Research output: Contribution to journalArticleScientificpeer-review

Abstract

The turtle shell is composed of dorsal armor (carapace) and ventral armor (plastron) covered by a keratinized epithelium. There are two epithelial appendages of the turtle shell: scutes (large epidermal shields separated by furrows and forming a unique mosaic) and tubercles (numerous small epidermal bumps located on the carapaces of some species). In our perspective, we take a synthetic, comparative approach to consider the homology and evolution of these integumental appendages. Scutes have been more intensively studied, as they are autapomorphic for turtles and can be diagnostic taxonomically. Their pattern of tessellation is stable phylogenetically, but labile in the individual. We discuss the history of developmental investigations of these structures and hypotheses of evolutionary and anomalous variation. In our estimation, the scutes of the turtle shell are an evolutionary novelty, whereas the tubercles found on the shells of some turtles are homologous to reptilian scales.
Original languageEnglish
Article number22619
JournalJournal of Experimental Zoology. Part B: Molecular and Developmental Evolution
Volume324
Issue number3
Pages (from-to)221-229
Number of pages9
ISSN1552-5007
DOIs
Publication statusPublished - 2015
MoE publication typeA1 Journal article-refereed

Fields of Science

  • 1181 Ecology, evolutionary biology
  • TURTLES
  • Scute
  • HOMOLOGY
  • SCALE
  • Variation
  • SHELL
  • MATHEMATICAL-MODEL
  • 1184 Genetics, developmental biology, physiology
  • DEVELOPMENTAL EVOLUTION
  • EVOLUTIONARY BIOLOGY
  • DEVELOPMENTAL EXPRESSION

Cite this

@article{8c2d9d1332c34eeb8175ef505b5eb2bd,
title = "The integumental appendages of the turtle shell: An evo-devo perspective",
abstract = "The turtle shell is composed of dorsal armor (carapace) and ventral armor (plastron) covered by a keratinized epithelium. There are two epithelial appendages of the turtle shell: scutes (large epidermal shields separated by furrows and forming a unique mosaic) and tubercles (numerous small epidermal bumps located on the carapaces of some species). In our perspective, we take a synthetic, comparative approach to consider the homology and evolution of these integumental appendages. Scutes have been more intensively studied, as they are autapomorphic for turtles and can be diagnostic taxonomically. Their pattern of tessellation is stable phylogenetically, but labile in the individual. We discuss the history of developmental investigations of these structures and hypotheses of evolutionary and anomalous variation. In our estimation, the scutes of the turtle shell are an evolutionary novelty, whereas the tubercles found on the shells of some turtles are homologous to reptilian scales.",
keywords = "1181 Ecology, evolutionary biology, TURTLES, Scute, HOMOLOGY, SCALE, Variation, SHELL, MATHEMATICAL-MODEL, 1184 Genetics, developmental biology, physiology, DEVELOPMENTAL EVOLUTION, EVOLUTIONARY BIOLOGY, DEVELOPMENTAL EXPRESSION",
author = "Jacqueline Moustakas-Verho and Gennadii Cherepanov",
year = "2015",
doi = "10.1002/jez.b.22619",
language = "English",
volume = "324",
pages = "221--229",
journal = "Journal of Experimental Zoology. Part B: Molecular and Developmental Evolution",
issn = "1552-5007",
publisher = "WILEY-LISS, INC",
number = "3",

}

The integumental appendages of the turtle shell: An evo-devo perspective. / Moustakas-Verho, Jacqueline; Cherepanov, Gennadii.

In: Journal of Experimental Zoology. Part B: Molecular and Developmental Evolution, Vol. 324, No. 3, 22619, 2015, p. 221-229.

Research output: Contribution to journalArticleScientificpeer-review

TY - JOUR

T1 - The integumental appendages of the turtle shell: An evo-devo perspective

AU - Moustakas-Verho, Jacqueline

AU - Cherepanov, Gennadii

PY - 2015

Y1 - 2015

N2 - The turtle shell is composed of dorsal armor (carapace) and ventral armor (plastron) covered by a keratinized epithelium. There are two epithelial appendages of the turtle shell: scutes (large epidermal shields separated by furrows and forming a unique mosaic) and tubercles (numerous small epidermal bumps located on the carapaces of some species). In our perspective, we take a synthetic, comparative approach to consider the homology and evolution of these integumental appendages. Scutes have been more intensively studied, as they are autapomorphic for turtles and can be diagnostic taxonomically. Their pattern of tessellation is stable phylogenetically, but labile in the individual. We discuss the history of developmental investigations of these structures and hypotheses of evolutionary and anomalous variation. In our estimation, the scutes of the turtle shell are an evolutionary novelty, whereas the tubercles found on the shells of some turtles are homologous to reptilian scales.

AB - The turtle shell is composed of dorsal armor (carapace) and ventral armor (plastron) covered by a keratinized epithelium. There are two epithelial appendages of the turtle shell: scutes (large epidermal shields separated by furrows and forming a unique mosaic) and tubercles (numerous small epidermal bumps located on the carapaces of some species). In our perspective, we take a synthetic, comparative approach to consider the homology and evolution of these integumental appendages. Scutes have been more intensively studied, as they are autapomorphic for turtles and can be diagnostic taxonomically. Their pattern of tessellation is stable phylogenetically, but labile in the individual. We discuss the history of developmental investigations of these structures and hypotheses of evolutionary and anomalous variation. In our estimation, the scutes of the turtle shell are an evolutionary novelty, whereas the tubercles found on the shells of some turtles are homologous to reptilian scales.

KW - 1181 Ecology, evolutionary biology

KW - TURTLES

KW - Scute

KW - HOMOLOGY

KW - SCALE

KW - Variation

KW - SHELL

KW - MATHEMATICAL-MODEL

KW - 1184 Genetics, developmental biology, physiology

KW - DEVELOPMENTAL EVOLUTION

KW - EVOLUTIONARY BIOLOGY

KW - DEVELOPMENTAL EXPRESSION

U2 - 10.1002/jez.b.22619

DO - 10.1002/jez.b.22619

M3 - Article

VL - 324

SP - 221

EP - 229

JO - Journal of Experimental Zoology. Part B: Molecular and Developmental Evolution

JF - Journal of Experimental Zoology. Part B: Molecular and Developmental Evolution

SN - 1552-5007

IS - 3

M1 - 22619

ER -