Shelter preference for the Japanese mitten crab Eriocheir japonica

A field experiment in a river, southern central Japan

Takayasu Yonezawa, Minoru Saito, Tadashi Yamashiro, Tatsuo Hamano, Kazuyoshi Nakata

Research output: Contribution to journalArticle

Abstract

The Japanese mitten crab Eriocheir japonica is an edible species commonly inhabiting rivers throughout the Japanese Archipelago. The present study investigated daytime shelter preference of the crab by a field experiment. The riverine experiment was done in an enclosure that was screened with an agricultural plastic netting. The enclosure was composed of sixteen 1-m2 sections, each section with one of the eight different riverbed substrate types( loose boulders with interstices, embedded boulders, loose cobbles with interstices, embedded cobbles, pebbles, sand, leaf litter, or woody debris; each with two replicates). Sixty-nine adult crabs were released into the enclosure and their hiding substrate types during the daytime were observed on a daily basis starting on the following day for 12 consecutive days. Of the total of 334 observations, 61.0% of the crabs were found in loose boulders with interstices, followed by woody debris (21.2%) and loose cobbles with interstices (12.8%). Significant positive rank correlations were observed between the carapace width of the crabs and the dimensions of the interstices used by these individuals (width: τ = 0.232, height: τ = 0.155, depth: τ = 0.091), indicating that the preferred shelter size by E. japonica changes according to the body size.

Original languageEnglish
Pages (from-to)1-11
Number of pages11
JournalEcology and Civil Engineering
Volume19
Issue number1
Publication statusPublished - 2016

Fingerprint

Enclosures
shelter
crab
Rivers
Debris
river
woody debris
Experiments
Substrates
edible species
Sand
substrate
Plastics
pebble
leaf litter
archipelago
body size
plastic
field experiment
sand

Keywords

  • Eriocheir japonica
  • Field experiment
  • Japanese mitten crab
  • River
  • Shelter preference

ASJC Scopus subject areas

  • Civil and Structural Engineering
  • Ecology

Cite this

Shelter preference for the Japanese mitten crab Eriocheir japonica : A field experiment in a river, southern central Japan. / Yonezawa, Takayasu; Saito, Minoru; Yamashiro, Tadashi; Hamano, Tatsuo; Nakata, Kazuyoshi.

In: Ecology and Civil Engineering, Vol. 19, No. 1, 2016, p. 1-11.

Research output: Contribution to journalArticle

Yonezawa, Takayasu ; Saito, Minoru ; Yamashiro, Tadashi ; Hamano, Tatsuo ; Nakata, Kazuyoshi. / Shelter preference for the Japanese mitten crab Eriocheir japonica : A field experiment in a river, southern central Japan. In: Ecology and Civil Engineering. 2016 ; Vol. 19, No. 1. pp. 1-11.
@article{bf9285897cfb4bbc994318063648cb62,
title = "Shelter preference for the Japanese mitten crab Eriocheir japonica: A field experiment in a river, southern central Japan",
abstract = "The Japanese mitten crab Eriocheir japonica is an edible species commonly inhabiting rivers throughout the Japanese Archipelago. The present study investigated daytime shelter preference of the crab by a field experiment. The riverine experiment was done in an enclosure that was screened with an agricultural plastic netting. The enclosure was composed of sixteen 1-m2 sections, each section with one of the eight different riverbed substrate types( loose boulders with interstices, embedded boulders, loose cobbles with interstices, embedded cobbles, pebbles, sand, leaf litter, or woody debris; each with two replicates). Sixty-nine adult crabs were released into the enclosure and their hiding substrate types during the daytime were observed on a daily basis starting on the following day for 12 consecutive days. Of the total of 334 observations, 61.0{\%} of the crabs were found in loose boulders with interstices, followed by woody debris (21.2{\%}) and loose cobbles with interstices (12.8{\%}). Significant positive rank correlations were observed between the carapace width of the crabs and the dimensions of the interstices used by these individuals (width: τ = 0.232, height: τ = 0.155, depth: τ = 0.091), indicating that the preferred shelter size by E. japonica changes according to the body size.",
keywords = "Eriocheir japonica, Field experiment, Japanese mitten crab, River, Shelter preference",
author = "Takayasu Yonezawa and Minoru Saito and Tadashi Yamashiro and Tatsuo Hamano and Kazuyoshi Nakata",
year = "2016",
language = "English",
volume = "19",
pages = "1--11",
journal = "Ecology and Civil Engineering",
issn = "1344-3755",
publisher = "Ecology and Civil Engineering Society",
number = "1",

}

TY - JOUR

T1 - Shelter preference for the Japanese mitten crab Eriocheir japonica

T2 - A field experiment in a river, southern central Japan

AU - Yonezawa, Takayasu

AU - Saito, Minoru

AU - Yamashiro, Tadashi

AU - Hamano, Tatsuo

AU - Nakata, Kazuyoshi

PY - 2016

Y1 - 2016

N2 - The Japanese mitten crab Eriocheir japonica is an edible species commonly inhabiting rivers throughout the Japanese Archipelago. The present study investigated daytime shelter preference of the crab by a field experiment. The riverine experiment was done in an enclosure that was screened with an agricultural plastic netting. The enclosure was composed of sixteen 1-m2 sections, each section with one of the eight different riverbed substrate types( loose boulders with interstices, embedded boulders, loose cobbles with interstices, embedded cobbles, pebbles, sand, leaf litter, or woody debris; each with two replicates). Sixty-nine adult crabs were released into the enclosure and their hiding substrate types during the daytime were observed on a daily basis starting on the following day for 12 consecutive days. Of the total of 334 observations, 61.0% of the crabs were found in loose boulders with interstices, followed by woody debris (21.2%) and loose cobbles with interstices (12.8%). Significant positive rank correlations were observed between the carapace width of the crabs and the dimensions of the interstices used by these individuals (width: τ = 0.232, height: τ = 0.155, depth: τ = 0.091), indicating that the preferred shelter size by E. japonica changes according to the body size.

AB - The Japanese mitten crab Eriocheir japonica is an edible species commonly inhabiting rivers throughout the Japanese Archipelago. The present study investigated daytime shelter preference of the crab by a field experiment. The riverine experiment was done in an enclosure that was screened with an agricultural plastic netting. The enclosure was composed of sixteen 1-m2 sections, each section with one of the eight different riverbed substrate types( loose boulders with interstices, embedded boulders, loose cobbles with interstices, embedded cobbles, pebbles, sand, leaf litter, or woody debris; each with two replicates). Sixty-nine adult crabs were released into the enclosure and their hiding substrate types during the daytime were observed on a daily basis starting on the following day for 12 consecutive days. Of the total of 334 observations, 61.0% of the crabs were found in loose boulders with interstices, followed by woody debris (21.2%) and loose cobbles with interstices (12.8%). Significant positive rank correlations were observed between the carapace width of the crabs and the dimensions of the interstices used by these individuals (width: τ = 0.232, height: τ = 0.155, depth: τ = 0.091), indicating that the preferred shelter size by E. japonica changes according to the body size.

KW - Eriocheir japonica

KW - Field experiment

KW - Japanese mitten crab

KW - River

KW - Shelter preference

UR - http://www.scopus.com/inward/record.url?scp=84988807168&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=84988807168&partnerID=8YFLogxK

M3 - Article

VL - 19

SP - 1

EP - 11

JO - Ecology and Civil Engineering

JF - Ecology and Civil Engineering

SN - 1344-3755

IS - 1

ER -