# Exoskeletons of mud crabs, Scylla serrata, of different sizes: Body weight, surface morphology, internal tissue structure, and mechanical resistance

https://mdr.nims.go.jp/datasets/44dc82a2-6bf8-422f-b778-706005947eae

## File

- [1-s2.0-S0264127525011190-main.pdf](https://mdr.nims.go.jp/filesets/2e157ebc-456e-46f4-bfd8-927c7c6a0453/download) ([Detail](https://mdr.nims.go.jp/filesets/2e157ebc-456e-46f4-bfd8-927c7c6a0453.md))
- [1-s2.0-S0264127525011190-Supplementary.pdf](https://mdr.nims.go.jp/filesets/687bd211-3253-4001-ae5e-bc2ce8d7a0ae/download) ([Detail](https://mdr.nims.go.jp/filesets/687bd211-3253-4001-ae5e-bc2ce8d7a0ae.md))

## Id

44dc82a2-6bf8-422f-b778-706005947eae

## Local identifier



## Visibility

open_to_public

## State

published

## Created at

2025-09-09T02:30:17.652860Z

## Updated at

2025-09-09T07:30:28.666986Z

## Published at

2025-09-09T07:18:44.627749Z

## Doi



## First published url

https://doi.org/10.1016/j.matdes.2025.114699

## Date published

2025-09-05

## Recorded date published

2025-10

## Resource type

journal_article

## Manuscript type

vor

## Collection



## Title

- title: 'Exoskeletons of mud crabs, Scylla serrata, of different sizes: Body weight,
    surface morphology, internal tissue structure, and mechanical resistance'
  title_type: original
  lang: en

## Description

- description: Few studies have simultaneously examined shell size and changes in
    the surface and interior of the exoskeleton across a wide range of body weights
    in mud crabs. This study first analyzed the relationship between the sex, weight,
    and shell size of 131 mud crabs caught in Okinawa, and compared the findings with
    data from seven regions. Next, using laser microscopy and nanoindentation, the
    study examined how surface morphology, internal structure, exoskeleton thickness,
    hardness, and Young's modulus change with body weight (BW) in 18 male crabs, weighing
    249 g to 1920 g. The growth coefficients of mud crabs in Okinawa were 3.52 for
    males and 2.91 for females, and these values were the largest among those reported
    so far in various countries. The exoskeleton surface in mud crabs consisted of
    a bimodal bulge structure with a large bulge 264.5 μm in diameter and a small
    bulge 100 μm in diameter. Such surface morphology and thickness of the hard exocuticle
    of 150 μm were independent of BW. On the other hand, the endocuticle thickness
    increased with BW. Even if the exoskeleton feels hard, the endocuticle may be
    thin because it is not fully developed by the effect of molting.
  description_type: abstract
  lang: und

## Creator

- name: Tadanobu Inoue
  role: author
  orcid: https://orcid.org/0000-0002-7366-7688
  organization: National Institute for Materials Science
- name: Takahiro Yoshihama
  role: author

## Contact agent



## Publisher

organization: Elsevier BV

## Managing organization



## Keyword

- subject: Crustacean cuticle
  schema: not_defined
- subject: Bimodal bulge structure
  schema: not_defined
- subject: Biomineralization
  schema: not_defined
- subject: Structure-property relations
  schema: not_defined
- subject: Protection
  schema: not_defined

## Rights

- identifier: https://creativecommons.org/licenses/by-nc-nd/4.0/

## Other identifier(s)



## Data origin

- data_origin_type: other

## Embargo



## Journal

- title: MATERIALS & DESIGN
  issn: '02641275'
  volume: '258'
  article_number: '114699'

## Conference



## Related item



## Funding

- identifier: JP21H04537
  funder_name: Japan Society for the Promotion of Science

## Instrument



## Instrument operator



## Instrument managing organization



## Measurement method



## Specimen



## Chemical composition



## Structure for specimen



## Structural feature for specimen



## Specific property for specimen



## Process for specimen treatment



## Computational method



## Energy level/transition state



## Software



## Custom property



## Fileset

- id: 2e157ebc-456e-46f4-bfd8-927c7c6a0453
  filename: 1-s2.0-S0264127525011190-main.pdf
  content_type: application/pdf
  size: 9890557
  md5: 1e17ed3a8a7b05280725a34d0b0e748c
- id: 687bd211-3253-4001-ae5e-bc2ce8d7a0ae
  filename: 1-s2.0-S0264127525011190-Supplementary.pdf
  content_type: application/pdf
  size: 5394014
  md5: 0e06ae7649c99e7fba87976039639214

## Thumbnail

fileset_id: 2e157ebc-456e-46f4-bfd8-927c7c6a0453
filename: 1-s2.0-S0264127525011190-main.pdf