Crystallographic texture analysis of Protobranchia (Mollusca: Bivalvia): Interspecific variations, homology and shell microstructural evolution

Kei Sato, Antonio G. Checa, Alejandro B. Rodríguez-Navarro, Takenori Sasaki

Research output: Contribution to journalArticle

Abstract

To achieve a better understanding of the formation and evolutionary history of molluscan shell microstructures, we analysed crystallographic textures of shell microstructures of selected species of Protobranchia, the most ancient group of Bivalvia. Our dataset covers four of the five protobranch superfamilies. Shell layers of five species of Nuculoidea, four species of Solemyida and seven species of Nuculanoidea were analysed and classified according to their textural crystallographic patterns into six different types. Our investigation revealed that some microstructures (e.g. the radially elongate simple prismatic structure) have structure-specific textural patterns, while other microstructures (e.g. the homogeneous structure) show taxon-specific differences despite morphological similarities. The former result means that each microstructure accurately reflects a unique crystallographic structure; the inconsistency in the latter, however, calls into question the homologies among morphologically defined microstructures. In comparison with the latest molecular phylogenetic trees, our data showed that crystallographic textures are phylogenetically constrained within Protobranchia. Each nuculoidean species had two to three distinct textural patterns, and one or two similar textural patterns were recognized within each species of Solemyida and Nuculanoidea. In general, closely related species had similar crystallographic textural patterns regardless of differences in shell microstructures.

Original languageEnglish
Pages (from-to)304-315
Number of pages12
JournalJournal of Molluscan Studies
Volume83
Issue number3
DOIs
Publication statusPublished - 2017 Jan 1

Fingerprint

shell (molluscs)
interspecific variation
Mollusca
homology
microstructure
Bivalvia
texture
shell
analysis
phylogenetics
phylogeny
history

ASJC Scopus subject areas

  • Aquatic Science
  • Animal Science and Zoology

Cite this

Crystallographic texture analysis of Protobranchia (Mollusca : Bivalvia): Interspecific variations, homology and shell microstructural evolution. / Sato, Kei; Checa, Antonio G.; Rodríguez-Navarro, Alejandro B.; Sasaki, Takenori.

In: Journal of Molluscan Studies, Vol. 83, No. 3, 01.01.2017, p. 304-315.

Research output: Contribution to journalArticle

Sato, Kei ; Checa, Antonio G. ; Rodríguez-Navarro, Alejandro B. ; Sasaki, Takenori. / Crystallographic texture analysis of Protobranchia (Mollusca : Bivalvia): Interspecific variations, homology and shell microstructural evolution. In: Journal of Molluscan Studies. 2017 ; Vol. 83, No. 3. pp. 304-315.
@article{eea218635cd64c91979611f1e820a660,
title = "Crystallographic texture analysis of Protobranchia (Mollusca: Bivalvia): Interspecific variations, homology and shell microstructural evolution",
abstract = "To achieve a better understanding of the formation and evolutionary history of molluscan shell microstructures, we analysed crystallographic textures of shell microstructures of selected species of Protobranchia, the most ancient group of Bivalvia. Our dataset covers four of the five protobranch superfamilies. Shell layers of five species of Nuculoidea, four species of Solemyida and seven species of Nuculanoidea were analysed and classified according to their textural crystallographic patterns into six different types. Our investigation revealed that some microstructures (e.g. the radially elongate simple prismatic structure) have structure-specific textural patterns, while other microstructures (e.g. the homogeneous structure) show taxon-specific differences despite morphological similarities. The former result means that each microstructure accurately reflects a unique crystallographic structure; the inconsistency in the latter, however, calls into question the homologies among morphologically defined microstructures. In comparison with the latest molecular phylogenetic trees, our data showed that crystallographic textures are phylogenetically constrained within Protobranchia. Each nuculoidean species had two to three distinct textural patterns, and one or two similar textural patterns were recognized within each species of Solemyida and Nuculanoidea. In general, closely related species had similar crystallographic textural patterns regardless of differences in shell microstructures.",
author = "Kei Sato and Checa, {Antonio G.} and Rodr{\'i}guez-Navarro, {Alejandro B.} and Takenori Sasaki",
year = "2017",
month = "1",
day = "1",
doi = "10.1093/mollus/eyx021",
language = "English",
volume = "83",
pages = "304--315",
journal = "Journal of Molluscan Studies",
issn = "0260-1230",
publisher = "Oxford University Press",
number = "3",

}

TY - JOUR

T1 - Crystallographic texture analysis of Protobranchia (Mollusca

T2 - Bivalvia): Interspecific variations, homology and shell microstructural evolution

AU - Sato, Kei

AU - Checa, Antonio G.

AU - Rodríguez-Navarro, Alejandro B.

AU - Sasaki, Takenori

PY - 2017/1/1

Y1 - 2017/1/1

N2 - To achieve a better understanding of the formation and evolutionary history of molluscan shell microstructures, we analysed crystallographic textures of shell microstructures of selected species of Protobranchia, the most ancient group of Bivalvia. Our dataset covers four of the five protobranch superfamilies. Shell layers of five species of Nuculoidea, four species of Solemyida and seven species of Nuculanoidea were analysed and classified according to their textural crystallographic patterns into six different types. Our investigation revealed that some microstructures (e.g. the radially elongate simple prismatic structure) have structure-specific textural patterns, while other microstructures (e.g. the homogeneous structure) show taxon-specific differences despite morphological similarities. The former result means that each microstructure accurately reflects a unique crystallographic structure; the inconsistency in the latter, however, calls into question the homologies among morphologically defined microstructures. In comparison with the latest molecular phylogenetic trees, our data showed that crystallographic textures are phylogenetically constrained within Protobranchia. Each nuculoidean species had two to three distinct textural patterns, and one or two similar textural patterns were recognized within each species of Solemyida and Nuculanoidea. In general, closely related species had similar crystallographic textural patterns regardless of differences in shell microstructures.

AB - To achieve a better understanding of the formation and evolutionary history of molluscan shell microstructures, we analysed crystallographic textures of shell microstructures of selected species of Protobranchia, the most ancient group of Bivalvia. Our dataset covers four of the five protobranch superfamilies. Shell layers of five species of Nuculoidea, four species of Solemyida and seven species of Nuculanoidea were analysed and classified according to their textural crystallographic patterns into six different types. Our investigation revealed that some microstructures (e.g. the radially elongate simple prismatic structure) have structure-specific textural patterns, while other microstructures (e.g. the homogeneous structure) show taxon-specific differences despite morphological similarities. The former result means that each microstructure accurately reflects a unique crystallographic structure; the inconsistency in the latter, however, calls into question the homologies among morphologically defined microstructures. In comparison with the latest molecular phylogenetic trees, our data showed that crystallographic textures are phylogenetically constrained within Protobranchia. Each nuculoidean species had two to three distinct textural patterns, and one or two similar textural patterns were recognized within each species of Solemyida and Nuculanoidea. In general, closely related species had similar crystallographic textural patterns regardless of differences in shell microstructures.

UR - http://www.scopus.com/inward/record.url?scp=85044941162&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=85044941162&partnerID=8YFLogxK

U2 - 10.1093/mollus/eyx021

DO - 10.1093/mollus/eyx021

M3 - Article

AN - SCOPUS:85044941162

VL - 83

SP - 304

EP - 315

JO - Journal of Molluscan Studies

JF - Journal of Molluscan Studies

SN - 0260-1230

IS - 3

ER -