Gene expression in American lobster (Homarus americanus) with epizootic shell disease


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dc.contributor.author Tarrant, Ann M.
dc.contributor.author Franks, Diana G.
dc.contributor.author Verslycke, Tim A.
dc.date.accessioned 2012-08-16T18:49:44Z
dc.date.available 2012-08-16T18:49:44Z
dc.date.issued 2012-06
dc.identifier.citation Journal of Shellfish Research 31 (2012): 505-513 en_US
dc.identifier.uri http://hdl.handle.net/1912/5335
dc.description Author Posting. © National Shellfisheries Association, 2012. This article is posted here by permission of National Shellfisheries Association for personal use, not for redistribution. The definitive version was published in Journal of Shellfish Research 31 (2012): 505-513, doi:10.2983/035.031.0210. en_US
dc.description.abstract Epizootic shell disease (ESD) has been reported widely in American lobster (Homarus americanus, Milne Edwards) in southern New England. The appearance of irregular, deep lesions—characteristic of ESD—has been associated previously with elevated levels of ecdysteroids and premature molting, but the underlying molecular and physiological changes associated with ESD remain poorly understood. Previously, we identified several genes, including arginine kinase and hemocyanin, that were expressed differentially in lobsters exhibiting signs of ESD (diseased) versus those lobsters exhibiting no signs of ESD (assumed healthy), and quantified their expression. In this study, we extend these findings and measure expression of a suite of 12 genes in tissues from 36 female lobsters of varying disease condition. In addition, molt stage is evaluated as a possible confounding factor in the expression of the selected genes. The expression of several genes changed significantly with disease stage. Arginine kinase expression decreased significantly in thoracic muscle of lobsters with signs of ESD. Ecdysteroid receptor expression was elevated significantly in both muscle and hepatopancreas of lobsters with signs of ESD. CYP45, a cytochrome P450 form that was shown previously to covary with ecdysteroid levels and to be inducible by some xenobiotics, showed significantly increased expression in hepatopancreas of lobsters with signs of ESD. Together, these results demonstrate that the expression of several genes is altered in lobsters showing signs of ESD, even when accounting for variation in molt stage. Given the observed changes in ecdysteroid receptor, arginine kinase, and CYP45 expression, further investigations of the association, if any, between molting, muscular function and xenobiotic metabolism and ESD are warranted. en_US
dc.description.sponsorship This work was supported by the National Marine Fisheries Service as the New England Lobster Research Initiative: Lobster Shell Disease under NOAA grant NA06NMF4720100 to the University of Rhode Island Fisheries Center. en_US
dc.format.mimetype application/pdf
dc.language.iso en_US en_US
dc.publisher National Shellfisheries Association en_US
dc.relation.uri http://dx.doi.org/10.2983/035.031.0210
dc.subject Arginine kinase en_US
dc.subject 100 lobsters en_US
dc.subject Cytochrome P450 en_US
dc.subject Ecdysteroid en_US
dc.subject Endocrine en_US
dc.subject Hepatopancreas en_US
dc.subject Heat shock protein en_US
dc.subject Epizootic shell disease en_US
dc.subject American lobster en_US
dc.subject Shade en_US
dc.title Gene expression in American lobster (Homarus americanus) with epizootic shell disease en_US
dc.type Article en_US
dc.identifier.doi 10.2983/035.031.0210

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