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Species and size diversity in protective services offered by coral guard-crabs

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dc.contributor.author Mckeon, C. Seabird en
dc.contributor.author Moore, Jenna M. en
dc.date.accessioned 2015-04-20T15:15:51Z
dc.date.available 2015-04-20T15:15:51Z
dc.date.issued 2014
dc.identifier.citation Mckeon, C. Seabird and Moore, Jenna M. 2014. "Species and size diversity in protective services offered by coral guard-crabs." <em>PeerJ</em>. 2:<a href="https://doi.org/10.7717/peerj.574">https://doi.org/10.7717/peerj.574</a> en
dc.identifier.issn 2167-8359
dc.identifier.uri http://hdl.handle.net/10088/25590
dc.description.abstract Coral guard-crabs in the genus Trapezia are well-documented defenders of their pocilloporid coral hosts against coral predators such as the Crown-of-Thorns seastar (Acanthaster planci complex). The objectives of this study were to examine the protective services of six species of Trapezia against corallivory, and the extent of functional diversity among these Trapezia species. Studies conducted in Mo&#39;orea, French Polynesia showed the Trapezia-coral mutualism protected the host corals from multiple predators through functional diversity in the assemblage of crab symbionts. Species differed in their defensive efficacy, but species within similar size classes shared similar abilities. Smaller-size Trapezia species, which were previously thought to be ineffective guards, play important defensive roles against small corallivores. We also measured the benefits of this mutualism to corals in the midst of an Acanthaster outbreak that reduced the live coral cover on the fore reef to less than 4%. The mutualism may positively affect the reef coral demography and potential for recovery during adverse predation events through shelter of multiple species of small corals near the host coral. Our results show that while functional diversity is supported within the genus, some Trapezia species may be functionally equivalent within the same size class, decreasing the threat of gaps in coral protection caused by absence or replacement of any single Trapezia species. en
dc.relation.ispartof PeerJ en
dc.title Species and size diversity in protective services offered by coral guard-crabs en
dc.type Journal Article en
dc.identifier.srbnumber 130172
dc.identifier.doi 10.7717/peerj.574
rft.jtitle PeerJ
rft.volume 2
dc.description.SIUnit NH-SMS en
dc.description.SIUnit NMNH en

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