Episymbiotic microbes as food and defence for marine isopods : unique symbioses in a hostile environment

dc.contributor.author Lindquist, Niels
dc.contributor.author Barber, Paul H.
dc.contributor.author Weisz, Jeremy B.
dc.date.accessioned 2005-12-12T16:15:43Z
dc.date.available 2005-12-12T16:15:43Z
dc.date.issued 2005-06-14
dc.description Author Posting. © Royal Society, 2005. This article is posted here by permission of Royal Society for personal use, not for redistribution. The definitive version was published in Proceedings of the Royal Society of London B 272 (2005): 1209-1216, doi:10.1098/rspb.2005.3082.
dc.description.abstract Symbioses profoundly affect the diversity of life, often through novel biochemical services that symbionts provide to their hosts. These biochemical services are typically nutritional enhancements and less commonly defensive, but rarely both simultaneously. On the coral reefs of Papua New Guinea, we discovered unique associations between marine isopod crustaceans (Santia spp.) and episymbiotic microbes. Transmission electron microscopy and pigment analyses show that episymbiont biomass is dominated by large (20–30μm) cyanobacterial cells. The isopods consume these photosymbionts and ‘cultivate’ them by inhabiting exposed sunlit substrates, a behaviour made possible by symbionts' production of a chemical defence that is repulsive to fishes. Molecular phylogenetic analyses demonstrated that the symbiotic microbial communities are diverse and probably dominated in terms of population size by bacteria and small unicellular Synechococcus-type cyanobacteria. Although largely unknown in the oceans, defensive symbioses probably promote marine biodiversity by allowing niche expansions into otherwise hostile environments. en
dc.description.sponsorship This work was supported by an NSF Predoctoral Fellowship awarded to J.B.W and a grant from the North Carolina Biotechnology Center to N.L and Richard Manderville (Wake Forest University). en
dc.format.extent 795647 bytes
dc.format.mimetype application/pdf
dc.identifier.citation Proceedings of the Royal Society of London B 272 (2005): 1209-1216 en
dc.identifier.doi 10.1098/rspb.2005.3082
dc.identifier.uri https://hdl.handle.net/1912/246
dc.language.iso en en
dc.publisher Royal Society en
dc.relation.uri https://doi.org/10.1098/rspb.2005.3082
dc.subject Coral reefs en
dc.subject Chemical defence en
dc.subject Cyanobacteria en
dc.subject Defensive symbiosis en
dc.subject Marine isopods en
dc.subject Molecular phylogenetics en
dc.title Episymbiotic microbes as food and defence for marine isopods : unique symbioses in a hostile environment en
dc.type Article en
dspace.entity.type Publication
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relation.isAuthorOfPublication.latestForDiscovery 9e5094c8-117e-42a8-aa3f-300b645dccfd
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