Increased potential for shell competition among hermit crabs ( Pagurus beringanus and Pagurus granosimanus) in the rocky intertidal
Abstract We examined the prevalence and shell use of two species of hermit crabs ( Pagurus granosimanus and Pagurus beringanus ) in exposed and protected microhabitats at five sites in the rocky temperate intertidal on San Juan Island, Washington, to compare present habitat partitioning and potentia...
Published in: | Journal of the Marine Biological Association of the United Kingdom |
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Cambridge University Press (CUP)
2021
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Online Access: | http://dx.doi.org/10.1017/s0025315421000837 https://www.cambridge.org/core/services/aop-cambridge-core/content/view/S0025315421000837 |
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crcambridgeupr:10.1017/s0025315421000837 2024-05-19T07:46:37+00:00 Increased potential for shell competition among hermit crabs ( Pagurus beringanus and Pagurus granosimanus) in the rocky intertidal Torjman, Brooke Z. Iyengar, Erika V. 2021 http://dx.doi.org/10.1017/s0025315421000837 https://www.cambridge.org/core/services/aop-cambridge-core/content/view/S0025315421000837 en eng Cambridge University Press (CUP) https://www.cambridge.org/core/terms Journal of the Marine Biological Association of the United Kingdom volume 101, issue 6, page 957-967 ISSN 0025-3154 1469-7769 journal-article 2021 crcambridgeupr https://doi.org/10.1017/s0025315421000837 2024-04-25T06:51:26Z Abstract We examined the prevalence and shell use of two species of hermit crabs ( Pagurus granosimanus and Pagurus beringanus ) in exposed and protected microhabitats at five sites in the rocky temperate intertidal on San Juan Island, Washington, to compare present habitat partitioning and potential interspecific competition to that reported nearly 50 years ago. We found that, in contrast to previous findings, the two species of hermit crabs overlapped extensively at some sites, typically those with less wave action. While the hermit crabs typically inhabited certain types of shells significantly more than others, and that use was congruent across microhabitats and species of hermit crabs at the same site, the dominant domicile differed substantially across sites. We provide a more complete ranking of shell use than previous authors and note site-specific dominant shell use. We conclude that previous habitat partitioning by depth may have weakened at protected sites. We hypothesize that increasing temperatures have caused P. granosimanus to expand its range deeper into the intertidal, which may increase the degree of interspecific competition for shells at the edge of the species’ tidal height range, where they overlap. Whether the habitat shift by this hermit crab is due to recent alterations in climate (particularly elevated temperatures, ocean acidification and lower local open ocean salinity) is unknown, but warrants further study. Article in Journal/Newspaper Ocean acidification Cambridge University Press Journal of the Marine Biological Association of the United Kingdom 1 11 |
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Cambridge University Press |
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English |
description |
Abstract We examined the prevalence and shell use of two species of hermit crabs ( Pagurus granosimanus and Pagurus beringanus ) in exposed and protected microhabitats at five sites in the rocky temperate intertidal on San Juan Island, Washington, to compare present habitat partitioning and potential interspecific competition to that reported nearly 50 years ago. We found that, in contrast to previous findings, the two species of hermit crabs overlapped extensively at some sites, typically those with less wave action. While the hermit crabs typically inhabited certain types of shells significantly more than others, and that use was congruent across microhabitats and species of hermit crabs at the same site, the dominant domicile differed substantially across sites. We provide a more complete ranking of shell use than previous authors and note site-specific dominant shell use. We conclude that previous habitat partitioning by depth may have weakened at protected sites. We hypothesize that increasing temperatures have caused P. granosimanus to expand its range deeper into the intertidal, which may increase the degree of interspecific competition for shells at the edge of the species’ tidal height range, where they overlap. Whether the habitat shift by this hermit crab is due to recent alterations in climate (particularly elevated temperatures, ocean acidification and lower local open ocean salinity) is unknown, but warrants further study. |
format |
Article in Journal/Newspaper |
author |
Torjman, Brooke Z. Iyengar, Erika V. |
spellingShingle |
Torjman, Brooke Z. Iyengar, Erika V. Increased potential for shell competition among hermit crabs ( Pagurus beringanus and Pagurus granosimanus) in the rocky intertidal |
author_facet |
Torjman, Brooke Z. Iyengar, Erika V. |
author_sort |
Torjman, Brooke Z. |
title |
Increased potential for shell competition among hermit crabs ( Pagurus beringanus and Pagurus granosimanus) in the rocky intertidal |
title_short |
Increased potential for shell competition among hermit crabs ( Pagurus beringanus and Pagurus granosimanus) in the rocky intertidal |
title_full |
Increased potential for shell competition among hermit crabs ( Pagurus beringanus and Pagurus granosimanus) in the rocky intertidal |
title_fullStr |
Increased potential for shell competition among hermit crabs ( Pagurus beringanus and Pagurus granosimanus) in the rocky intertidal |
title_full_unstemmed |
Increased potential for shell competition among hermit crabs ( Pagurus beringanus and Pagurus granosimanus) in the rocky intertidal |
title_sort |
increased potential for shell competition among hermit crabs ( pagurus beringanus and pagurus granosimanus) in the rocky intertidal |
publisher |
Cambridge University Press (CUP) |
publishDate |
2021 |
url |
http://dx.doi.org/10.1017/s0025315421000837 https://www.cambridge.org/core/services/aop-cambridge-core/content/view/S0025315421000837 |
genre |
Ocean acidification |
genre_facet |
Ocean acidification |
op_source |
Journal of the Marine Biological Association of the United Kingdom volume 101, issue 6, page 957-967 ISSN 0025-3154 1469-7769 |
op_rights |
https://www.cambridge.org/core/terms |
op_doi |
https://doi.org/10.1017/s0025315421000837 |
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Journal of the Marine Biological Association of the United Kingdom |
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1 |
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11 |
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1799486833852153856 |