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dc.contributor.author Diez, María Emilia
dc.contributor.author Orensanz, Jose Maria
dc.contributor.author Marquez, Federico
dc.contributor.author Cremonte, Florencia
dc.date.available 2015-07-30T17:48:06Z
dc.date.issued 2013-08
dc.identifier.citation Diez, María Emilia; Orensanz, Jose Maria; Marquez, Federico; Cremonte, Florencia; Shell damage in the Tehuelche scallop Aequipecten tehuelchus caused by Polydora rickettsi (Polychaeta: Spionidae) infestation; Academic Press Inc Elsevier Science; Journal Of Invertebrate Pathology; 114; 8-2013; 107-113
dc.identifier.issn 0022-2011
dc.identifier.uri http://hdl.handle.net/11336/1524
dc.description.abstract The different types of shell damage caused to the commercially valuable Tehuelche scallop (Aequipecten tehuelchus) by the polychaete Polydora rickettsi are described. X-rays, computerized tomography, shell sections, scanning electron microscopy, Energy Dispersive X-ray analysis (EDAX), mineralogical analyses and geometric morphometrics were applied to that end. Scallop shells presented three types of damage: (1) spots, (2) calcareous alterations, and (3) mud blisters. Microstructural alterations consisted of a simple conchiolin membranous layer in the case of spots, a series of interleaved layers of different degree of calcifications in calcareous alterations, and two different surface morphologies (muddy and mucous layers) in mud blisters. Damage was localized mainly along concentric growth rings, coincidentally with the location of most burrows, as shown by X-ray. Mineralogical analysis showed that in all cases (including non-infested shells) calcite was the calcium carbonate polymorph present. Geometric morphometrics showed that only 5% of shape variation was explained by infestation with P. rickettsi, irrespective of the type of damage. Number of worms per infested shell varied significantly among four beds. Left shells (upward-oriented) were significantly more affected than right shells, which are in closer contact with the bottom.
dc.description.abstract Highlights Infestation by P. rickettsi is the primary cause of shell damage in the Tehuelche scallop The damage was characterized by structure, composition and shell morphology. Three types of damage -spots, calcareous alterations and mud blisters- were identified. Number of worms per infested shell varied significantly among four beds studied.• The left shell was the most affected.
dc.format application/pdf
dc.language.iso eng
dc.publisher Academic Press Inc Elsevier Science
dc.relation Copyright © 2013 Elsevier Inc
dc.rights info:eu-repo/semantics/restrictedAccess
dc.rights.uri https://creativecommons.org/licenses/by-nc-sa/2.5/ar/
dc.subject Polydorids
dc.subject Tehuelche scallop
dc.subject Microstructure
dc.subject Geometric morphometrics
dc.subject Shell damage
dc.subject Patagonia
dc.subject.classification Zoología, Ornitología, Entomología, Etología
dc.subject.classification Ciencias Biológicas
dc.subject.classification CIENCIAS NATURALES Y EXACTAS
dc.title Shell damage in the Tehuelche scallop Aequipecten tehuelchus caused by Polydora rickettsi (Polychaeta: Spionidae) infestation
dc.type info:eu-repo/semantics/article
dc.type info:ar-repo/semantics/artículo
dc.type info:eu-repo/semantics/publishedVersion
dc.date.updated 2016-03-30 10:35:44.97925-03
dc.journal.volume 114
dc.journal.pagination 107-113
dc.journal.pais Estados Unidos
dc.journal.ciudad Amsterdam
dc.description.fil Fil: Diez, María Emilia. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Nacional Patagonico; Argentina;
dc.description.fil Fil: Orensanz, Jose Maria. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Nacional Patagonico; Argentina;
dc.description.fil Fil: Marquez, Federico. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Nacional Patagonico; Argentina;
dc.description.fil Fil: Cremonte, Florencia. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Nacional Patagonico; Argentina;
dc.journal.title Journal Of Invertebrate Pathology
dc.relation.alternativeid info:eu-repo/semantics/altIdentifier/url/http://www.ncbi.nlm.nih.gov/pubmed/23871854
dc.relation.alternativeid info:eu-repo/semantics/altIdentifier/doi/http://dx.doi.org/10.1016/j.jip.2013.07.001


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info:eu-repo/semantics/restrictedAccess Excepto donde se diga explícitamente, este item se publica bajo la siguiente descripción: Creative Commons Attribution-NonCommercial-ShareAlike 2.5 Unported (CC BY-NC-SA 2.5)