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First paleoproteome study of fossil fish otoliths and the pristine preservation of the biomineral crystal host. Sci Rep 2023; 13:3822. [PMID: 36882485 PMCID: PMC9992438 DOI: 10.1038/s41598-023-30537-8] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/09/2022] [Accepted: 02/24/2023] [Indexed: 03/09/2023] Open
Abstract
Otoliths are calcium carbonate components of the stato-acoustical organ responsible for hearing and maintenance of the body balance in teleost fish. During their formation, control over, e.g., morphology and carbonate polymorph is influenced by complex insoluble collagen-like protein and soluble non-collagenous protein assemblages; many of these proteins are incorporated into their aragonite crystal structure. However, in the fossil record these proteins are considered lost through diagenetic processes, hampering studies of past biomineralization mechanisms. Here we report the presence of 11 fish-specific proteins (and several isoforms) in Miocene (ca. 14.8-14.6 Ma) phycid hake otoliths. These fossil otoliths were preserved in water-impermeable clays and exhibit microscopic and crystallographic features indistinguishable from modern representatives, consistent with an exceptionally pristine state of preservation. Indeed, these fossil otoliths retain ca. 10% of the proteins sequenced from modern counterparts, including proteins specific to inner ear development, such as otolin-1-like proteins involved in the arrangement of the otoliths into the sensory epithelium and otogelin/otogelin-like proteins that are located in the acellular membranes of the inner ear in modern fish. The specificity of these proteins excludes the possibility of external contamination. Identification of a fraction of identical proteins in modern and fossil phycid hake otoliths implies a highly conserved inner ear biomineralization process through time.
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2
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de Frutos M, Rodríguez-Navarro AB, Li X, Checa AG. Nanoscale Analysis of the Structure and Composition of Biogenic Calcite Reveals the Biomineral Growth Pattern. ACS NANO 2023; 17:2829-2839. [PMID: 36696398 DOI: 10.1021/acsnano.2c11169] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/17/2023]
Abstract
The vast majority of calcium carbonate biocrystals differ from inorganic crystals in that they display a patent nanoroughness consisting of lumps of crystalline material (calcite/aragonite) surrounded by amorphous pellicles. Scanning transmission electron microscopy coupled with electron energy loss spectroscopy (STEM-EELS) was used to map the calcite secreted by a barnacle chemically and structurally with ultrahigh resolution (down to 1 nm). The material is composed of irregular lumps of calcite (up to two hundred nm in diameter) surrounded by relatively continuous cortexes (up to 20 nm thick) of amorphous calcium carbonate (ACC) and/or nanocalcite plus biomolecules, with a surplus of calcium relative to carbonate. We develop a model by which the separation of the crystalline and amorphous phases takes place upon crystallization of the calcite from a precursor ACC. The organic biomolecules are expelled from the crystal lattice and concentrate in the form of pellicles, where they stabilize minor amounts of ACC/nanocalcite. In this way, we change the previously established conception of biomineral structure and growth.
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Affiliation(s)
- Marta de Frutos
- Laboratoire de Physique des Solides (LPS), CNRS UMR 8502, Université Paris-Saclay, F-91405 Orsay, France
| | | | - Xiaoyan Li
- Laboratoire de Physique des Solides (LPS), CNRS UMR 8502, Université Paris-Saclay, F-91405 Orsay, France
| | - Antonio G Checa
- Departamento de Estratigrafía y Paleontología, Universidad de Granada, ES-18071 Granada, Spain
- Instituto Andaluz de Ciencias de la Tierra, CSIC-Universidad de Granada, 18100 Armilla, Spain
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3
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Cuif JP, Medjoubi K, Somogyi A, Dauphin Y, Bazin D. From visible light to X-ray microscopy: major steps in the evolution of developmental models for calcification of invertebrate skeletons. CR CHIM 2022. [DOI: 10.5802/crchim.125] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
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4
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Checa AG, Macías-Sánchez E, Rodríguez-Navarro AB, Sánchez-Navas A, Lagos NA. Origin of the biphase nature and surface roughness of biogenic calcite secreted by the giant barnacle Austromegabalanus psittacus. Sci Rep 2020; 10:16784. [PMID: 33033294 PMCID: PMC7544902 DOI: 10.1038/s41598-020-73804-8] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/06/2020] [Accepted: 09/23/2020] [Indexed: 11/22/2022] Open
Abstract
The calcite grains forming the wall plates of the giant barnacle Austramegabalanus psittacus have a distinctive surface roughness made of variously sized crystalline nanoprotrusions covered by extremely thin amorphous pellicles. This biphase (crystalline-amorphous) structure also penetrates through the crystal’s interiors, forming a web-like structure. Nanoprotrusions very frequently elongate following directions related to the crystallographic structure of calcite, in particular, the <− 441> directions, which are the strongest periodic bond chains (PBCs) in calcite. We propose that the formation of elongated nanoprotrusions happens during the crystallization of calcite from a precursor amorphous calcium carbonate (ACC). This is because biomolecules integrated within the ACC are expelled from such PBCs due to the force of crystallization, with the consequent formation of uninterrupted crystalline nanorods. Expelled biomolecules accumulate in adjacent regions, thereby stabilizing small pellicle-like volumes of ACC. With growth, such pellicles become occluded within the crystal. In summary, the surface roughness of the biomineral surface reflects the complex shape of the crystallization front, and the biphase structure provides evidence for crystallization from an amorphous precursor. The surface roughness is generally explained as resulting from the attachment of ACC particles to the crystal surface, which later crystallised in concordance with the crystal lattice. If this was the case, the nanoprotrusions do not reflect the size and shape of any precursor particle. Accordingly, the particle attachment model for biomineral formation should seek new evidence.
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Affiliation(s)
- Antonio G Checa
- Departamento de Estratigrafía y Paleontología, Universidad de Granada, 18071, Granada, Spain. .,Instituto Andaluz de Ciencias de la Tierra, CSIC-Universidad de Granada, 18100, Armilla, Spain.
| | - Elena Macías-Sánchez
- Radboud University Medical Center, Radboud Institute for Molecular Life Sciences, 6500 HB, Nijmegen, The Netherlands.,Max Planck Institute of Colloids and Interfaces, 14476, Potsdam, Germany
| | | | - Antonio Sánchez-Navas
- Departamento de Mineralogía y Petrología, Universidad de Granada, 18071, Granada, Spain
| | - Nelson A Lagos
- Centro de Investigación e Innovación para el Cambio Climático, Facultad de Ciencias, Universidad Santo Tomás, Santiago, Chile
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5
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Breaking the long-standing morphological paradigm: Individual prisms in the pearl oyster shell grow perpendicular to the c-axis of calcite. J Struct Biol 2019; 205:121-132. [PMID: 30685338 DOI: 10.1016/j.jsb.2019.01.004] [Citation(s) in RCA: 16] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/22/2018] [Revised: 01/13/2019] [Accepted: 01/14/2019] [Indexed: 11/20/2022]
Abstract
Cross-sections of calcitic prismatic layers in mollusk shells, cut perpendicular to growth direction, reveal well-defined polygonal shapes of individual "grains" clearly visible by light and electron microscopy. For several kinds of shells, it was shown that the average number of edges in an individual prism approaches six during the growth process. Taking into account the rhombohedral symmetry of calcite, often presented in hexagonal axes, all this led to the long-standing opinion that calcitic prisms grow along the c-axis of calcite. In this paper, using X-ray diffraction and electron backscatter diffraction (EBSD), we unambiguously show that calcitic prisms in pearl oyster Pinctada margaritifera predominantly grow perpendicular to the c-axis. The obtained results imply that the hexagon-like habitus of growing crystallites may be not necessarily connected to calcite crystallography and, therefore, other factors should be taken into consideration. We analyze this phenomenon by comparing the organic contents in Pinctada margaritifera and Pinna nobilis shells, the later revealing regular growth of calcitic prisms along the c-axis.
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6
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Cook PK, Mocuta C, Dufour É, Languille MA, Bertrand L. Full-section otolith microtexture imaged by local-probe X-ray diffraction. J Appl Crystallogr 2018. [DOI: 10.1107/s1600576718008610] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 04/03/2023] Open
Abstract
An optimized synchrotron-based X-ray diffraction method is described for the direct and efficient measurement of crystallite phase and orientation at micrometre resolution across textured polycrystalline samples of millimetre size (high scale dynamics) within a reasonable time frame. The method is demonstrated by application to biomineral fish otoliths. Otoliths are calcium carbonate accretions formed in the inner ears of vertebrates. Fish otoliths are essential biological archives, providing information for individual age estimation, the study of population dynamics and fish stock management, as well as past environmental and climatic conditions from archaeological specimens. Here, X-ray diffraction mapping is discussed as a means of describing the mineralogical structure and microtexture of otoliths. Texture maps could be generated with a fewa priorihypotheses on the aragonitic system. Full-section imaging allows quantitative intercomparison of crystal orientation coupled to microstructural description, across the zones of the otoliths that represent distinctive mineral organization. It reveals the extents of these regions and their internal textural structure. Characterization of structural and textural correlations across whole images is therefore proposed as a complementary approach to investigate and validate the local in-depth nanometre-scale study of biominerals. The estimation of crystallite size and orientational distribution points to diffracting domains intermediate in size between the otolith nanogranules and the crystalline units, in agreement with recently reported results.
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7
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Schulz-Mirbach T, Olbinado M, Rack A, Mittone A, Bravin A, Melzer RR, Ladich F, Heß M. In-situ visualization of sound-induced otolith motion using hard X-ray phase contrast imaging. Sci Rep 2018; 8:3121. [PMID: 29449570 PMCID: PMC5814409 DOI: 10.1038/s41598-018-21367-0] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/14/2017] [Accepted: 01/30/2018] [Indexed: 11/23/2022] Open
Abstract
Regarding the basics of ear structure-function relationships in fish, the actual motion of the solid otolith relative to the underlying sensory epithelium has rarely been investigated. Otolith motion has been characterized based on a few experimental studies and on approaches using mathematical modeling, which have yielded partially conflicting results. Those studies either predicted a simple back-and-forth motion of the otolith or a shape-dependent, more complex motion. Our study was designed to develop and test a new set-up to generate experimental data on fish otolith motion in-situ. Investigating the basic parameters of otolith motion requires an approach with high spatial and temporal resolution. We therefore used hard X-ray phase contrast imaging (XPCI). We compared two anatomically well-studied cichlid species, Steatocranus tinanti and Etroplus maculatus, which, among other features, differ in the 3D shape of their otoliths. In a water-filled tank, we presented a pure tone of 200 Hz to 1) isolated otoliths embedded in agarose serving as a simple model or 2) to a fish (otoliths in-situ). Our new set-up successfully visualized the motion of otoliths in-situ and therefore paves the way for future studies evaluating the principles of otolith motion.
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Affiliation(s)
- Tanja Schulz-Mirbach
- Ludwig-Maximilians-University Munich, Department Biology II, Zoology, Großhaderner Straße 2, 82152, Planegg-Martinsried, Germany
| | - Margie Olbinado
- European Synchrotron Radiation Facility (ESRF, ID19), 71 Avenue des Martyrs, 38000, Grenoble, France
| | - Alexander Rack
- European Synchrotron Radiation Facility (ESRF, ID19), 71 Avenue des Martyrs, 38000, Grenoble, France
| | - Alberto Mittone
- European Synchrotron Radiation Facility (ESRF, ID17), 71 Avenue des Martyrs, 38000, Grenoble, France
| | - Alberto Bravin
- European Synchrotron Radiation Facility (ESRF, ID17), 71 Avenue des Martyrs, 38000, Grenoble, France
| | - Roland R Melzer
- Bavarian State Collection of Zoology (ZSM), Münchhausenstraße 21, 81247, Munich, Germany
| | - Friedrich Ladich
- University of Vienna, Department of Behavioural Biology, Althanstraße 14, 1090, Vienna, Austria.
| | - Martin Heß
- Ludwig-Maximilians-University Munich, Department Biology II, Zoology, Großhaderner Straße 2, 82152, Planegg-Martinsried, Germany
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8
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Limburg KE, Elfman M. Insights from two-dimensional mapping of otolith chemistry. JOURNAL OF FISH BIOLOGY 2017; 90:480-491. [PMID: 27312827 DOI: 10.1111/jfb.13048] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/19/2015] [Accepted: 04/19/2016] [Indexed: 06/06/2023]
Abstract
Non-destructive microbeam-based methods were used for 2-D mapping of trace elements to gain a greater appreciation of otolith composition and spatial configuration. Based on studies of a wide variety of fish taxa, this approach more fully captures the nature of otolith chemical heterogeneity. Such variations may be due to a number of factors, including differences in crystallization, genetics, growth or even sample preparation or contamination. Examples presented here highlight research conducted at the Lund Ion Beam Analysis Facility (LIBAF) and at the Cornell High-Energy Synchrotron Source (CHESS).
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Affiliation(s)
- K E Limburg
- Department of Environmental and Forest Biology, State University of New York College of Environmental Science and Forestry, Syracuse, NY 13210, U.S.A
| | - M Elfman
- Division of Nuclear Physics, Department of Physics, Lund University, SE-221 00 Lund, Sweden
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9
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Wolf SE, Böhm CF, Harris J, Demmert B, Jacob DE, Mondeshki M, Ruiz-Agudo E, Rodríguez-Navarro C. Nonclassical crystallization in vivo et in vitro (I): Process-structure-property relationships of nanogranular biominerals. J Struct Biol 2016; 196:244-259. [DOI: 10.1016/j.jsb.2016.07.016] [Citation(s) in RCA: 40] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/31/2016] [Revised: 05/25/2016] [Accepted: 07/22/2016] [Indexed: 12/20/2022]
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10
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Luquet G, Dauphin Y, Percot A, Salomé M, Ziegler A, Fernández MS, Arias JL. Calcium Deposits in the Crayfish, Cherax quadricarinatus: Microstructure Versus Elemental Distribution. MICROSCOPY AND MICROANALYSIS : THE OFFICIAL JOURNAL OF MICROSCOPY SOCIETY OF AMERICA, MICROBEAM ANALYSIS SOCIETY, MICROSCOPICAL SOCIETY OF CANADA 2016; 22:22-38. [PMID: 26818557 DOI: 10.1017/s1431927615015767] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/05/2023]
Abstract
The crayfish Cherax quadricarinatus stores calcium ions, easily mobilizable after molting, for calcifying parts of the new exoskeleton. They are chiefly stored as amorphous calcium carbonate (ACC) during each premolt in a pair of gastroliths synthesized in the stomach wall. How calcium carbonate is stabilized in the amorphous state in such a biocomposite remains speculative. The knowledge of the microstructure at the nanometer level obtained by field emission scanning electron microscopy and atomic force microscopy combined with scanning electron microscopy energy-dispersive X-ray spectroscopy, micro-Raman and X-ray absorption near edge structure spectroscopy gave relevant information on the elaboration of such an ACC-stabilized biomineral. We observed nanogranules distributed along chitin-protein fibers and the aggregation of granules in thin layers. AFM confirmed the nanolevel structure, showing granules probably surrounded by an organic layer and also revealing a second level of aggregation as described for other crystalline biominerals. Raman analyses showed the presence of ACC, amorphous calcium phosphate, and calcite. Elemental analyses confirmed the presence of elements like Fe, Na, Mg, P, and S. P and S are heterogeneously distributed. P is present in both the mineral and organic phases of gastroliths. S seems present as sulfate (probably as sulfated sugars), sulfonate, sulfite, and sulfoxide groups and, in a lesser extent, as sulfur-containing amino acids.
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Affiliation(s)
- Gilles Luquet
- 1Sorbonne Universités,Biologie des Organismes et des Ecosystèmes Aquatiques (BOREA),UMR MNHN/CNRS-7208/UPMC/UCN/UA/IRD-207,Muséum National d'Histoire Naturelle,75005 Paris,France
| | - Yannicke Dauphin
- 2Sorbonne Universités,Département Systèmatique et Evolution,Mammifères et Oiseaux,Muséum National d'Histoire Naturelle,75005 Paris,France
| | - Aline Percot
- 3Sorbonne Universités,MONARIS, UMR 8233 CNRS/UPMC,Université Paris 06,75005 Paris,France
| | - Murielle Salomé
- 4ID21, European Synchrotron Radiation Facility,38000 Grenoble,France
| | - Andreas Ziegler
- 5Central Facility for Electron Microscopy,University of Ulm,89069 Ulm,Germany
| | - Maria S Fernández
- 6Faculty of Veterinary and Animal Sciences,University of Chile,Santiago de Chile,Chile
| | - José L Arias
- 6Faculty of Veterinary and Animal Sciences,University of Chile,Santiago de Chile,Chile
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11
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Nouet J, Chevallard C, Farre B, Nehrke G, Campmas E, Stoetzel E, El Hajraoui MA, Nespoulet R. Limpet Shells from the Aterian Level 8 of El Harhoura 2 Cave (Témara, Morocco): Preservation State of Crossed-Foliated Layers. PLoS One 2015; 10:e0137162. [PMID: 26376294 PMCID: PMC4574309 DOI: 10.1371/journal.pone.0137162] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/16/2014] [Accepted: 08/14/2015] [Indexed: 12/02/2022] Open
Abstract
The exploitation of mollusks by the first anatomically modern humans is a central question for archaeologists. This paper focuses on level 8 (dated around ∼ 100 ka BP) of El Harhoura 2 Cave, located along the coastline in the Rabat-Témara region (Morocco). The large quantity of Patella sp. shells found in this level highlights questions regarding their origin and preservation. This study presents an estimation of the preservation status of these shells. We focus here on the diagenetic evolution of both the microstructural patterns and organic components of crossed-foliated shell layers, in order to assess the viability of further investigations based on shell layer minor elements, isotopic or biochemical compositions. The results show that the shells seem to be well conserved, with microstructural patterns preserved down to sub-micrometric scales, and that some organic components are still present in situ. But faint taphonomic degradations affecting both mineral and organic components are nonetheless evidenced, such as the disappearance of organic envelopes surrounding crossed-foliated lamellae, combined with a partial recrystallization of the lamellae. Our results provide a solid case-study of the early stages of the diagenetic evolution of crossed-foliated shell layers. Moreover, they highlight the fact that extreme caution must be taken before using fossil shells for palaeoenvironmental or geochronological reconstructions. Without thorough investigation, the alteration patterns illustrated here would easily have gone unnoticed. However, these degradations are liable to bias any proxy based on the elemental, isotopic or biochemical composition of the shells. This study also provides significant data concerning human subsistence behavior: the presence of notches and the good preservation state of limpet shells (no dissolution/recrystallization, no bioerosion and no abrasion/fragmentation aspects) would attest that limpets were gathered alive with tools by Middle Palaeolithic (Aterian) populations in North Africa for consumption.
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Affiliation(s)
- Julius Nouet
- Université Paris Sud, CNRS UMR GEOPS 8148, bâtiment 504, campus universitaire, 91405 Orsay cedex, France
- * E-mail:
| | - Corinne Chevallard
- CEA, CNRS IRAMIS, UMR SIS2M 3299, LIONS, CEA-Saclay, F- 91191 Gif-sur-Yvette, France
| | - Bastien Farre
- ISTO, CNRS UMR 7327, 1A rue de la Férolerie 45071 Orléans cedex 2, France
| | - Gernot Nehrke
- Alfred Wegener Institute for Polar and Marine Research, Am Handelshafen 12, 27570 Bremerhaven, Germany
| | - Emilie Campmas
- Université Toulouse Jean Jaurès, CNRS UMR TRACES 5608, Maison de la Recherche, 5 allée Antonio Machado, 31058 Toulouse, France
| | - Emmanuelle Stoetzel
- Muséum National d’Histoire Naturelle, Département de Préhistoire, CNRS UMR 7194, Musée de l’Homme, bureau 345, Paris, France
| | - Mohamed Abdeljalil El Hajraoui
- Institut National des Sciences de l’Archéologie et du Patrimoine, angle rues 5 et 7 Rabat Instituts, Madinat Al Irfane, Rabat Hay Riyad, Morocco
| | - Roland Nespoulet
- Muséum National d’Histoire Naturelle, Département de Préhistoire, CNRS UMR 7194, Musée de l’Homme, bureau 345, Paris, France
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12
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Gal A, Weiner S, Addadi L. A perspective on underlying crystal growth mechanisms in biomineralization: solution mediated growth versus nanosphere particle accretion. CrystEngComm 2015. [DOI: 10.1039/c4ce01474j] [Citation(s) in RCA: 63] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
A working hypothesis for the understanding of amorphous-to-crystalline transformations in biogenic skeletal materials formed through transient amorphous precursor phases.
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Affiliation(s)
- Assaf Gal
- Department of Structural Biology
- Weizmann Institute of Science
- Rehovot, Israel 76100
| | - Steve Weiner
- Department of Structural Biology
- Weizmann Institute of Science
- Rehovot, Israel 76100
| | - Lia Addadi
- Department of Structural Biology
- Weizmann Institute of Science
- Rehovot, Israel 76100
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13
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Checa AG, Mutvei H, Osuna-Mascaró AJ, Bonarski JT, Faryna M, Berent K, Pina CM, Rousseau M, Macías-Sánchez E. Crystallographic control on the substructure of nacre tablets. J Struct Biol 2013; 183:368-376. [PMID: 23933391 DOI: 10.1016/j.jsb.2013.07.014] [Citation(s) in RCA: 26] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/26/2013] [Revised: 07/17/2013] [Accepted: 07/28/2013] [Indexed: 11/18/2022]
Abstract
Nacre tablets of mollusks develop two kinds of features when either the calcium carbonate or the organic portions are removed: (1) parallel lineations (vermiculations) formed by elongated carbonate rods, and (2) hourglass patterns, which appear in high relief when etched or in low relief if bleached. In untreated tablets, SEM and AFM data show that vermiculations correspond to aligned and fused aragonite nanogloblules, which are partly surrounded by thin organic pellicles. EBSD mapping of the surfaces of tablets indicates that the vermiculations are invariably parallel to the crystallographic a-axis of aragonite and that the triangles are aligned with the b-axis and correspond to the advance of the {010} faces during the growth of the tablet. According to our interpretation, the vermiculations appear because organic molecules during growth are expelled from the a-axis, where the Ca-CO3 bonds are the shortest. In this way, the subunits forming nacre merge uninterruptedly, forming chains parallel to the a-axis, whereas the organic molecules are expelled to the sides of these chains. Hourglass patterns would be produced by preferential adsorption of organic molecules along the {010}, as compared to the {100} faces. A model is presented for the nanostructure of nacre tablets. SEM and EBSD data also show the existence within the tablets of nanocrystalline units, which are twinned on {110} with the rest of the tablet. Our study shows that the growth dynamics of nacre tablets (and bioaragonite in general) results from the interaction at two different and mutually related levels: tablets and nanogranules.
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Affiliation(s)
- Antonio G Checa
- Departamento de Estratigrafía y Paleontología, Facultad de Ciencias, Universidad de Granada, Avenida Fuentenueva s/n, 18071 Granada, Spain.
| | - Harry Mutvei
- Department of Paleozoology, Swedish Museum of Natural History, Frescativägen 40, 11-418 Stockholm, Sweden.
| | - Antonio J Osuna-Mascaró
- Departamento de Estratigrafía y Paleontología, Facultad de Ciencias, Universidad de Granada, Avenida Fuentenueva s/n, 18071 Granada, Spain.
| | - Jan T Bonarski
- Institute of Metallurgy and Materials Science of the Polish Academy of Sciences, Reymonta. 25, 30-059 Kraków, Poland.
| | - Marek Faryna
- Institute of Metallurgy and Materials Science of the Polish Academy of Sciences, Reymonta. 25, 30-059 Kraków, Poland.
| | - Katarzyna Berent
- Institute of Metallurgy and Materials Science of the Polish Academy of Sciences, Reymonta. 25, 30-059 Kraków, Poland.
| | - Carlos M Pina
- Departamento de Cristalografía y Mineralogía, Facultad de Ciencias Geológicas, Universidad Complutense de Madrid, José Antonio Novais s/n, 28040 Madrid, Spain.
| | - Marthe Rousseau
- CNRS, UMR7365, Ingénierie Moléculaire et Physiopathologie Articulaire (IMoPA), Faculté de Médecine, Université de Lorraine, 9 Avenue de la Forêt de Haye, 54505 Vandoeuvre-lès-Nancy, France.
| | - Elena Macías-Sánchez
- Departamento de Estratigrafía y Paleontología, Facultad de Ciencias, Universidad de Granada, Avenida Fuentenueva s/n, 18071 Granada, Spain.
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14
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Schulz-Mirbach T, Götz A, Griesshaber E, Plath M, Schmahl W. Texture and nano-scale internal microstructure of otoliths in the Atlantic molly, Poecilia mexicana: A high-resolution EBSD study. Micron 2013; 51:60-9. [DOI: 10.1016/j.micron.2013.07.001] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/26/2013] [Revised: 06/18/2013] [Accepted: 07/02/2013] [Indexed: 11/15/2022]
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15
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Preparation techniques alter the mineral and organic fractions of fish otoliths: insights using Raman micro-spectrometry. Anal Bioanal Chem 2013; 405:4787-98. [DOI: 10.1007/s00216-013-6893-2] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/03/2012] [Revised: 02/26/2013] [Accepted: 03/04/2013] [Indexed: 10/27/2022]
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16
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Chalar C, Salomé M, Señorale-Pose M, Marín M, Williams CT, Dauphin Y. A high resolution analysis of the structure and chemical composition of the calcareous corpuscles from Mesocestoides corti. Micron 2013; 44:185-92. [DOI: 10.1016/j.micron.2012.06.008] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/29/2012] [Revised: 06/15/2012] [Accepted: 06/16/2012] [Indexed: 11/25/2022]
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17
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Nouet J, Baronnet A, Howard L. Crystallization in organo-mineral micro-domains in the crossed-lamellar layer of Nerita undata (Gastropoda, Neritopsina). Micron 2012; 43:456-62. [DOI: 10.1016/j.micron.2011.10.027] [Citation(s) in RCA: 25] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/17/2011] [Revised: 10/24/2011] [Accepted: 10/31/2011] [Indexed: 11/27/2022]
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