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Resource degradation: a subtle effect of bottom fishing

M. J Kaiser, H Hinz, R. M Callaway, A Nall, C. L Biles, Ruth Callaway

Marine Biology, Volume: 146, Issue: 2, Pages: 401 - 408

Swansea University Author: Ruth Callaway

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DOI (Published version): 10.1007/s00227-004-1440-5

Abstract

Populations of hermit crabs are critically limitedby the availability of suitable gastropod shells thatthey utilise to reduce their risk of predation and environmentalstress. Common whelks are the main sourceof shells for large hermit crabs in the northern Atlanticbut are vulnerable to direct and in...

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Published in: Marine Biology
ISSN: 0025-3162 1432-1793
Published: 2005
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URI: https://cronfa.swan.ac.uk/Record/cronfa13084
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fullrecord <?xml version="1.0"?><rfc1807><datestamp>2019-06-12T16:36:36.7882222</datestamp><bib-version>v2</bib-version><id>13084</id><entry>2012-10-16</entry><title>Resource degradation: a subtle effect of bottom fishing</title><swanseaauthors><author><sid>61d7fe28cbb286de1c9c43f45014c490</sid><firstname>Ruth</firstname><surname>Callaway</surname><name>Ruth Callaway</name><active>true</active><ethesisStudent>false</ethesisStudent></author></swanseaauthors><date>2012-10-16</date><deptcode>FGSEN</deptcode><abstract>Populations of hermit crabs are critically limitedby the availability of suitable gastropod shells thatthey utilise to reduce their risk of predation and environmentalstress. Common whelks are the main sourceof shells for large hermit crabs in the northern Atlanticbut are vulnerable to direct and indirect effects of fishingactivity. This study examined the potential consequencesof degrading shell resources for common hermit crabs.Laboratory trials demonstrated that hermit crabs avoidlow-quality damaged shells throughout their life history.This laboratory preference was corroborated by directfield observations of shells preferentially occupied byhermit crabs, compared with shells available for occupation.In the field, 8 times as many empty shells hadholes compared to shells occupied by hermit crabs. Inthe North Sea, the abundance and biomass of livewhelks and hermit crabs collected at sites where they cooccurredwere significantly related. However, whelksoccurred at far fewer sites overall and were morepatchily distributed at high abundance than hermitcrabs, which were more widespread. At a subset of sites,whelks of the same body-mass range occurred in theIrish and North Sea. However, at these sites, hermitcrabs sampled from the North Sea had a significantlylower biomass. This suggests that the shells available foroccupation at the North Sea sites would not supportcrabs of a body mass comparable to that found in theIrish Sea. Using published data, we calculated that insome of the intensively fished areas of the North Sea,24% of the available shell resource will be damaged eachyear. The reduction in shell quality in the North Sea mayimpose a physical constraint on the upper size limitcurrently attainable by hermit crabs and hence may haveimplications for population viability.</abstract><type>Journal Article</type><journal>Marine Biology</journal><volume>146</volume><journalNumber>2</journalNumber><paginationStart>401</paginationStart><paginationEnd>408</paginationEnd><publisher/><issnPrint>0025-3162</issnPrint><issnElectronic>1432-1793</issnElectronic><keywords/><publishedDay>31</publishedDay><publishedMonth>1</publishedMonth><publishedYear>2005</publishedYear><publishedDate>2005-01-31</publishedDate><doi>10.1007/s00227-004-1440-5</doi><url/><notes/><college>COLLEGE NANME</college><department>Science and Engineering - Faculty</department><CollegeCode>COLLEGE CODE</CollegeCode><DepartmentCode>FGSEN</DepartmentCode><institution>Swansea University</institution><apcterm/><lastEdited>2019-06-12T16:36:36.7882222</lastEdited><Created>2012-10-16T18:57:35.2855417</Created><path><level id="1">Faculty of Science and Engineering</level><level id="2">School of Biosciences, Geography and Physics - Biosciences</level></path><authors><author><firstname>M. J</firstname><surname>Kaiser</surname><order>1</order></author><author><firstname>H</firstname><surname>Hinz</surname><order>2</order></author><author><firstname>R. M</firstname><surname>Callaway</surname><order>3</order></author><author><firstname>A</firstname><surname>Nall</surname><order>4</order></author><author><firstname>C. L</firstname><surname>Biles</surname><order>5</order></author><author><firstname>Ruth</firstname><surname>Callaway</surname><order>6</order></author></authors><documents/><OutputDurs/></rfc1807>
spelling 2019-06-12T16:36:36.7882222 v2 13084 2012-10-16 Resource degradation: a subtle effect of bottom fishing 61d7fe28cbb286de1c9c43f45014c490 Ruth Callaway Ruth Callaway true false 2012-10-16 FGSEN Populations of hermit crabs are critically limitedby the availability of suitable gastropod shells thatthey utilise to reduce their risk of predation and environmentalstress. Common whelks are the main sourceof shells for large hermit crabs in the northern Atlanticbut are vulnerable to direct and indirect effects of fishingactivity. This study examined the potential consequencesof degrading shell resources for common hermit crabs.Laboratory trials demonstrated that hermit crabs avoidlow-quality damaged shells throughout their life history.This laboratory preference was corroborated by directfield observations of shells preferentially occupied byhermit crabs, compared with shells available for occupation.In the field, 8 times as many empty shells hadholes compared to shells occupied by hermit crabs. Inthe North Sea, the abundance and biomass of livewhelks and hermit crabs collected at sites where they cooccurredwere significantly related. However, whelksoccurred at far fewer sites overall and were morepatchily distributed at high abundance than hermitcrabs, which were more widespread. At a subset of sites,whelks of the same body-mass range occurred in theIrish and North Sea. However, at these sites, hermitcrabs sampled from the North Sea had a significantlylower biomass. This suggests that the shells available foroccupation at the North Sea sites would not supportcrabs of a body mass comparable to that found in theIrish Sea. Using published data, we calculated that insome of the intensively fished areas of the North Sea,24% of the available shell resource will be damaged eachyear. The reduction in shell quality in the North Sea mayimpose a physical constraint on the upper size limitcurrently attainable by hermit crabs and hence may haveimplications for population viability. Journal Article Marine Biology 146 2 401 408 0025-3162 1432-1793 31 1 2005 2005-01-31 10.1007/s00227-004-1440-5 COLLEGE NANME Science and Engineering - Faculty COLLEGE CODE FGSEN Swansea University 2019-06-12T16:36:36.7882222 2012-10-16T18:57:35.2855417 Faculty of Science and Engineering School of Biosciences, Geography and Physics - Biosciences M. J Kaiser 1 H Hinz 2 R. M Callaway 3 A Nall 4 C. L Biles 5 Ruth Callaway 6
title Resource degradation: a subtle effect of bottom fishing
spellingShingle Resource degradation: a subtle effect of bottom fishing
Ruth Callaway
title_short Resource degradation: a subtle effect of bottom fishing
title_full Resource degradation: a subtle effect of bottom fishing
title_fullStr Resource degradation: a subtle effect of bottom fishing
title_full_unstemmed Resource degradation: a subtle effect of bottom fishing
title_sort Resource degradation: a subtle effect of bottom fishing
author_id_str_mv 61d7fe28cbb286de1c9c43f45014c490
author_id_fullname_str_mv 61d7fe28cbb286de1c9c43f45014c490_***_Ruth Callaway
author Ruth Callaway
author2 M. J Kaiser
H Hinz
R. M Callaway
A Nall
C. L Biles
Ruth Callaway
format Journal article
container_title Marine Biology
container_volume 146
container_issue 2
container_start_page 401
publishDate 2005
institution Swansea University
issn 0025-3162
1432-1793
doi_str_mv 10.1007/s00227-004-1440-5
college_str Faculty of Science and Engineering
hierarchytype
hierarchy_top_id facultyofscienceandengineering
hierarchy_top_title Faculty of Science and Engineering
hierarchy_parent_id facultyofscienceandengineering
hierarchy_parent_title Faculty of Science and Engineering
department_str School of Biosciences, Geography and Physics - Biosciences{{{_:::_}}}Faculty of Science and Engineering{{{_:::_}}}School of Biosciences, Geography and Physics - Biosciences
document_store_str 0
active_str 0
description Populations of hermit crabs are critically limitedby the availability of suitable gastropod shells thatthey utilise to reduce their risk of predation and environmentalstress. Common whelks are the main sourceof shells for large hermit crabs in the northern Atlanticbut are vulnerable to direct and indirect effects of fishingactivity. This study examined the potential consequencesof degrading shell resources for common hermit crabs.Laboratory trials demonstrated that hermit crabs avoidlow-quality damaged shells throughout their life history.This laboratory preference was corroborated by directfield observations of shells preferentially occupied byhermit crabs, compared with shells available for occupation.In the field, 8 times as many empty shells hadholes compared to shells occupied by hermit crabs. Inthe North Sea, the abundance and biomass of livewhelks and hermit crabs collected at sites where they cooccurredwere significantly related. However, whelksoccurred at far fewer sites overall and were morepatchily distributed at high abundance than hermitcrabs, which were more widespread. At a subset of sites,whelks of the same body-mass range occurred in theIrish and North Sea. However, at these sites, hermitcrabs sampled from the North Sea had a significantlylower biomass. This suggests that the shells available foroccupation at the North Sea sites would not supportcrabs of a body mass comparable to that found in theIrish Sea. Using published data, we calculated that insome of the intensively fished areas of the North Sea,24% of the available shell resource will be damaged eachyear. The reduction in shell quality in the North Sea mayimpose a physical constraint on the upper size limitcurrently attainable by hermit crabs and hence may haveimplications for population viability.
published_date 2005-01-31T03:14:59Z
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score 11.036006

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