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Article: Relationship between heavy metal accumulation and genetic variability decrease in the intertidal crab Pachygrapsus marmoratus (Decapoda; Grapsidae)

TitleRelationship between heavy metal accumulation and genetic variability decrease in the intertidal crab Pachygrapsus marmoratus (Decapoda; Grapsidae)
Authors
Keywordsmean d2
microsatellites
Mediterranean basin
heavy metals
bioaccumulation
natural marine populations
Issue Date2008
Citation
Estuarine, Coastal and Shelf Science, 2008, v. 79, n. 4, p. 679-686 How to Cite?
AbstractThe "genetic erosion" hypothesis posits that heavy metal stress is related to a loss of genetic diversity at the population level. The genetic diversity of natural populations can, however, be affected by natural processes as well as by human impact. We studied the relationship between heavy metal bioaccumulation and genetic variability in the intertidal crab Pachygrapsus marmoratus. Tissue samples were collected from 40 individuals inhabiting four polluted and four unpolluted sites along the Tuscan coast (Mediterranean basin), and were examined for four heavy metals (arsenic, As, cadmium, Cd, lead, Pb, and copper, Cu). We also assessed the genetic variability of 235 crabs from the same localities using six microsatellite loci. Our results show that the bioaccumulation levels of these individuals accurately reflect the levels of pollution in their immediate environment, and that heavy metals accumulate more in the hepatopancreas than in the gills. Moreover, populations from polluted sites have significantly less genetic variability, measured as mean standardized d2, and a significantly lower percentage of unrelated individuals, than populations from unpolluted sites. This evidence supports the "genetic erosion" hypothesis for metal heavy exposure in natural environments. © 2008 Elsevier Ltd. All rights reserved.
Persistent Identifierhttp://hdl.handle.net/10722/219586
ISSN
2015 Impact Factor: 2.335
2015 SCImago Journal Rankings: 1.094

 

DC FieldValueLanguage
dc.contributor.authorFratini, Sara-
dc.contributor.authorZane, Lorenzo-
dc.contributor.authorRagionieri, Lapo-
dc.contributor.authorVannini, Marco-
dc.contributor.authorCannicci, Stefano-
dc.date.accessioned2015-09-23T02:57:27Z-
dc.date.available2015-09-23T02:57:27Z-
dc.date.issued2008-
dc.identifier.citationEstuarine, Coastal and Shelf Science, 2008, v. 79, n. 4, p. 679-686-
dc.identifier.issn0272-7714-
dc.identifier.urihttp://hdl.handle.net/10722/219586-
dc.description.abstractThe "genetic erosion" hypothesis posits that heavy metal stress is related to a loss of genetic diversity at the population level. The genetic diversity of natural populations can, however, be affected by natural processes as well as by human impact. We studied the relationship between heavy metal bioaccumulation and genetic variability in the intertidal crab Pachygrapsus marmoratus. Tissue samples were collected from 40 individuals inhabiting four polluted and four unpolluted sites along the Tuscan coast (Mediterranean basin), and were examined for four heavy metals (arsenic, As, cadmium, Cd, lead, Pb, and copper, Cu). We also assessed the genetic variability of 235 crabs from the same localities using six microsatellite loci. Our results show that the bioaccumulation levels of these individuals accurately reflect the levels of pollution in their immediate environment, and that heavy metals accumulate more in the hepatopancreas than in the gills. Moreover, populations from polluted sites have significantly less genetic variability, measured as mean standardized d2, and a significantly lower percentage of unrelated individuals, than populations from unpolluted sites. This evidence supports the "genetic erosion" hypothesis for metal heavy exposure in natural environments. © 2008 Elsevier Ltd. All rights reserved.-
dc.languageeng-
dc.relation.ispartofEstuarine, Coastal and Shelf Science-
dc.subjectmean d2-
dc.subjectmicrosatellites-
dc.subjectMediterranean basin-
dc.subjectheavy metals-
dc.subjectbioaccumulation-
dc.subjectnatural marine populations-
dc.titleRelationship between heavy metal accumulation and genetic variability decrease in the intertidal crab Pachygrapsus marmoratus (Decapoda; Grapsidae)-
dc.typeArticle-
dc.description.natureLink_to_subscribed_fulltext-
dc.identifier.doi10.1016/j.ecss.2008.06.009-
dc.identifier.scopuseid_2-s2.0-50449102192-
dc.identifier.volume79-
dc.identifier.issue4-
dc.identifier.spage679-
dc.identifier.epage686-

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