Repository logo
 
Publication

Crystallinity and microchemistry of Nassarius reticulatus (Caenogastropoda) statoliths : towards their structure stability and homogeneity

dc.contributor.authorOliveira, Susana Galante
dc.contributor.authorMarçal, Raquel
dc.contributor.authorGuimarães, Fernanda
dc.contributor.authorSoares, Jorge
dc.contributor.authorLopes, José Carlos
dc.contributor.authorMachado, Jorge
dc.contributor.authorBarroso, Carlos
dc.date.accessioned2015-03-21T22:12:27Z
dc.date.available2015-03-21T22:12:27Z
dc.date.issued2014-05
dc.description.abstractGastropod statoliths are spherical biocarbonates formed during their lifespan. The stability and homogeneity of these structures’ mineral matrix was characterised along their radiuses, using Nassarius reticulatus as a model. Generally, they were proved to be bimineralic. Two of the three CaCO3 crystalline polymorphs occurring in biocarbonates – aragonite and calcite – coexist along statolith radiuses, aragonite being unequivocally the most abundant phase. The presence of a diffuse organic matrix was also perceived by the detection of a weak Raman band between 2800 and 3000 cm-1 consistently observed along radiuses. Beyond the apparent stability and homogeneity, different crystalline orientations were disclosed by Raman spectroscopy. A change in the intensity pattern of the features related to the lattice and bending modes of aragonite between different radiuses give new insights for a possible spherulitic-like growth of these structures. As expected from the relative homogeneity of both mineral and organic signals, there was no pattern on the distribution of Ca, O, Na and S along radiuses. However, a higher concentration of Sr occurs in growth rings (known as winter tags), corroborating the already described negative correlation between the concentration of this element in statoliths and temperature. Despite the apparent stability and homogeneity of the matrix during its lifespan, the periodic distribution of Sr potentially influences a dissimilar incorporation of trace elements in increments and growth rings. Since gastropod statolith elemental fingerprinting was recently suggested as a new tool to monitor marine environmental changes, the pressing need for further studies on the incorporation of traces in these structures is highlighted.por
dc.identifier.citationGalante-Oliveira, Susana... [et al.] - Crystallinity and microchemistry of Nassarius reticulatus (Caenogastropoda) statoliths : towards their structure stability and homogeneity. In: Journal of Structural Biology, Vol. 186, Issue 2 (May 2014), p. 292-301por
dc.identifier.doihttp://dx.doi.org/10.1016/j.jsb.2014.03.023
dc.identifier.issn1047-8477
dc.identifier.urihttp://hdl.handle.net/10400.9/2653
dc.language.isoengpor
dc.subjectCristalinidadepor
dc.subjectMicroquímicapor
dc.subjectGastrópodespor
dc.subjectEspectroscopia Ramanpor
dc.titleCrystallinity and microchemistry of Nassarius reticulatus (Caenogastropoda) statoliths : towards their structure stability and homogeneitypor
dc.typejournal article
dspace.entity.typePublication
oaire.citation.titleJournal of Structural Biologypor
person.familyNameGuimarães
person.givenNameFernanda
person.identifier.orcid0000-0001-6961-9256
rcaap.rightsopenAccesspor
rcaap.typearticlepor
relation.isAuthorOfPublicationc2c84ba4-fe6b-4c34-8a68-ffc0ad4ab352
relation.isAuthorOfPublication.latestForDiscoveryc2c84ba4-fe6b-4c34-8a68-ffc0ad4ab352

Files

Original bundle
Now showing 1 - 1 of 1
Loading...
Thumbnail Image
Name:
36461_p1.pdf
Size:
1.93 MB
Format:
Adobe Portable Document Format
License bundle
Now showing 1 - 1 of 1
No Thumbnail Available
Name:
license.txt
Size:
1.71 KB
Format:
Item-specific license agreed upon to submission
Description: