Title:
Population dynamics of the non-native crab Petrolisthes armatus invading the South Atlantic Bight at densities of thousands m⁻²

dc.contributor.author Hay, Mark E. en_US
dc.contributor.author Hollebone, Amanda L. en_US
dc.contributor.corporatename Georgia Institute of Technology. School of Biology en_US
dc.date.accessioned 2012-01-19T18:40:02Z
dc.date.available 2012-01-19T18:40:02Z
dc.date.issued 2007-04-27
dc.description © Inter-Research 2007 · www.int-res.com en_US
dc.description DOI: 10.3354/meps336211
dc.description.abstract The green porcelain crab Petrolisthes armatus recently invaded oyster reefs of the South Atlantic Bight. In 2 estuaries of coastal Georgia, USA, crab densities reached peak densities of 4000 to 11 000 crabs m–2 in some periods and locations. Densities generally were higher in the low versus the high intertidal and in the lower versus upper regions of the estuaries. In warmer months, 20 to 90% of adult females were gravid, recruits were dense, and population levels were high. In colder months, densities dropped by 64 to >99%. Male:female ratios were near 1:1 across times and locations. Maximum mean densities of P. armatus in Georgia were 37 times the highest densities recorded in the presumptive native range. Crabs in the new range reproduced at a smaller size, and the percentage of gravid females was similar between the old and new range. Thus, population fecundity in Georgia exceeds that of the native range by more than 1 order of magnitude. Densities of native mud crabs in the genera Panopeus and Eurypanopeus were unrelated to, or positively correlated with, densities of the exotic crabs; correlations were never significantly negative. The impact of Petrolisthes armatus on native communities is unclear, but could be considerable if this filter-feeding crab impacts oysters, which are the foundation species of inshore reefs. en_US
dc.identifier.citation Hollebone, AL and ME Hay. 2007. Population dynamics of the non-native crab Petrolisthes armatus invading the South Atlantic Bight at densities of thousands m-2. Marine Ecology Progress Series 336: 211-223. en_US
dc.identifier.doi 10.3354/meps336211
dc.identifier.issn 0171-8630
dc.identifier.uri http://hdl.handle.net/1853/42257
dc.language.iso en_US en_US
dc.publisher Georgia Institute of Technology en_US
dc.publisher.original Inter-Research en_US
dc.subject Marine invasion en_US
dc.subject Invasive species en_US
dc.subject Exotic species en_US
dc.subject Crab densities en_US
dc.subject Population dynamics en_US
dc.subject Species boundaries en_US
dc.title Population dynamics of the non-native crab Petrolisthes armatus invading the South Atlantic Bight at densities of thousands m⁻² en_US
dc.type Text
dc.type.genre Article
dspace.entity.type Publication
local.contributor.author Hay, Mark E.
local.contributor.corporatename College of Sciences
local.contributor.corporatename School of Biological Sciences
relation.isAuthorOfPublication f3c1eedd-ee9e-4723-b2d5-c793a79b0bbf
relation.isOrgUnitOfPublication 85042be6-2d68-4e07-b384-e1f908fae48a
relation.isOrgUnitOfPublication c8b3bd08-9989-40d3-afe3-e0ad8d5c72b5
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