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Occurrence and characterization of pearls from oysters of the genus Crassostrea

Published online by Cambridge University Press:  04 April 2016

Frederico M. Batista ,
Ana Grade ,
Deborah M. Power ,
Francisco Ruano  and
Elizabeth M. Harper
Frederico M. Batista*
Affiliation:
Instituto Português do Mar e da Atmosfera, Divisão de Aquicultura e Valorização, Estação Experimental de Moluscicultura de Tavira, Av. 5 de Outubro, 8700-305 Olhão, Portugal Centro de Ciências do Mar (CCMAR), Universidade do Algarve, Campus de Gambelas, 8005-139 Faro, Portugal
Ana Grade
Affiliation:
Instituto Português do Mar e da Atmosfera, Divisão de Aquicultura e Valorização, Estação Experimental de Moluscicultura de Tavira, Av. 5 de Outubro, 8700-305 Olhão, Portugal
Deborah M. Power
Affiliation:
Centro de Ciências do Mar (CCMAR), Universidade do Algarve, Campus de Gambelas, 8005-139 Faro, Portugal
Francisco Ruano
Affiliation:
Instituto Português do Mar e da Atmosfera (IPMA), Divisão de Aquacultura e Valorização, Av. de Brasília 6, 1449-006, Lisboa, Portugal
Elizabeth M. Harper
Affiliation:
Department of Earth Sciences, University of Cambridge, Downing Street, Cambridge CB2 3EQ, UK
*
Correspondence should be addressed to:F.M. Batista, Centro de Ciências do Mar (CCMAR), Universidade do Algarve, Campus de Gambelas, 8005-139 Faro, Portugal Email: [email protected]
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Abstract

The occurrence of pearls in the ‘true’ oysters, the Ostreioidea, is poorly documented despite being the most produced mollusc species in the world. Oysters of the Crassostrea genus were collected in two different sites in southern Portugal where both Crassostrea angulata and C. gigas are present, namely in: (1) the Ria Formosa lagoon where pearls were not observed (N = 446); and (2) the Guadiana estuary where pearls were found in 12 out of the 798 oysters analysed. The pearls were located mainly at the edge of the right mantle lobe in the inhalant chamber and their maximum length ranged from 0.9 to 5.5 mm. Almost all the pearls had a white-cream colouration with the exception of two pearls that had a black-brown colour. X-ray diffraction analysis of one pearl showed that it was entirely calcitic with no traces of either aragonite or vaterite. The pearls observed were therefore non-nacreous pearls. Scanning electron microscopy (SEM) revealed a diversity of microstructures including prismatic, foliae-like sheets and blocky textures, i.e. highly reminiscent of the host oyster shell microstructures. Parasites (e.g. parasitic copepods, Haplosporidium-like plasmodia) and signs of diseases (e.g. foot disease) were observed in some of the oysters analysed, but they were not associated with the occurrence of pearls. The present work is one of the few studies on the occurrence of natural pearls in ‘true’ oysters and to our knowledge the first description of their microstructure by SEM.

Keywords

PearlsOstreidaeCrassostreamicrostructureparasitesnon-nacreous
Type
Research Article
Information
Journal of the Marine Biological Association of the United Kingdom , Volume 97 , Issue 2 , March 2017 , pp. 297 - 302
Copyright
Copyright © Marine Biological Association of the United Kingdom 2016 

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References

REFERENCES

Ambariyanto, A. and Seed, R. (1991) The infestation of Mytilus edulis Linnaeus by Polydora ciliate (Johnston) in the Conwy estuary, North Wales. Journal of Molluscan Studies 57, 413–424.CrossRefGoogle Scholar
Awaji, M. and Machii, A. (2011) Fundamental studies on in vivo and in vitro pearl formation – contribution of outer epithelial cells of pearl oyster mantle and pearl sacs. Aqua-BioScience Monographs 4, 1–39.Google Scholar
Batista, F.M., Boudry, P., dos Santos, A., Renault, T. and Ruano, F. (2009) Infestation of the cupped oysters Crassostrea angulata, C. gigas and their first generation hybrids by the copepod Myicola ostreae: differences in susceptibility and host response. Parasitology 136, 537–543.CrossRefGoogle ScholarPubMed
Bieler, R., Mikkelsen, P.M., Collins, T.M., Glover, E.A., González, V.L., Graf, D.L., Harper, E.M., Healy, J., Kawauchi, G.Y., Sharma, P., Staubach, P.S., Strong, E.E., Taylor, J.D., Tëmkin, I., Zardus, J.D., Clark, S., Guzmán, A., McIntyre, E., Sharp, P. and Giribet, G. (2014) Investigating the bivalve tree of life – an exemplar-based approach combining molecular and novel morphological characters. Invertebrate Systematics 28, 32–115.Google Scholar
Cuif, J.P., Dauphin, Y., Howard, L., Nouet, J., Rouzière, S. and Salomé, M. (2011) Is the pearl layer a reversed shell? A re-examination of the theory of pearl formation through physical characterizations of pearl and shell development stages in Pinctada margaritifera . Aquatic Living Resources 23, 277–284.Google Scholar
Esteban-Delgado, F.J., Harper, E.M., Checa, A.G. and Rodrigez-Navarro, A.B. (2008) Origin and expansion of foliated microstructure in pteriomorph bivalves. Biological Bulletin 214, 153–165.Google Scholar
Fernandes, F.C. and Seed, R. (1983) The incidence of pearls in populations of the blue mussel, Mytilus edulis L., from North Wales. Journal of Molluscan Studies 49, 107–115.Google Scholar
Garel, E., Pinto, L., Santos, A. and Ferreira, O. (2009) Tidal and river discharge forcing upon water and sediment circulation at a rock-bound estuary (Guadiana estuary, Portugal). Estuarine, Coastal and Shelf Science 84, 269–281.Google Scholar
Landman, N.H., Mikkelsen, P.M., Bieler, R. and Bronson, B. (2001) Pearls – a natural history. New York, NY: Harry N. Abrams, Inc.Google Scholar
Ma, Y., Berland, S., Andrieu, J.-P., Feng, Q. and Bedouet, L. (2013) What is the difference in organic matrix of aragonite vs. vaterite polymorph in natural shell and pearl? Study of the pearl-forming freshwater bivalve mollusc Hyriopsis cumingii . Materials Science and Engineering C 33, 1521–1529.Google Scholar
McGinty, E.L., Zenger, K.R., Jones, D.B. and Jerry, D.R. (2012) Transcriptome analysis of biomineralisation-related genes within the pearl sac: host and donor oyster contribution. Marine Genomics 5, 27–33.Google Scholar
Moore, R.C. (1969) Treatise on invertebrate paleontology. Part N, Mollusca 6, Bivalvia, Volume 1–2. Boulder, CO & Lawrence, KS: Geological Society of America & University of Kansas Press.Google Scholar
Murty, V.S. (1976) Note on the natural pearl of Placenta placenta (Linnaeus). Indian Journal of Fisheries 23, 243–346.Google Scholar
Nagai, K. (2013) A history of the cultured pearl industry. Zoological Science 30, 783–793.Google Scholar
Neumeier, U. and Ciavola, P. (2004) Flow resistance and associated sedimentary processes in a Spartina maritima salt-marsh. Journal of Coastal Research 20, 435–447.Google Scholar
Newton, A. and Mudge, S.M. (2003) Temperature and salinity regimes in a shallow, mesotidal lagoon, the Ria Formosa, Portugal. Estuarine, Coastal and Shelf Science 56, 1–13.Google Scholar
Pérez-Huerta, A., Cuif, J.-P., Dauphin, Y. and Cusack, M. (2014) Crystallography of calcite in pearls. European Journal of Mineralogy 26, 507–516.Google Scholar
Sindermann, C.J. and Rosenfield, A. (1967) Principal diseases of commercially important marine bivalve mollusca and crustacea. Fishery Bulletin 66, 335–385.Google Scholar
Soldati, A.L., Jacob, D.E., Wehrmeister, U. and Hofmeister, W. (2008) Structural characterization and chemical composition of aragonite and vaterite in freshwater pearls. Mineralogical Magazine 72, 579–592.Google Scholar
Strack, E. (2006) Pearls. Stuttgart: Ruehle-Diebener-Verlag, 707 pp.Google Scholar
Suzuki, M., Saruwatari, K., Kogure, T., Yamamoto, Y., Nishimura, T., Kato, T. and Nagasawa, H. (2009) An acidic matrix protein, Pif, is a key macromolecule for nacre formation. Science 325, 1388–1390.Google Scholar
Taylor, J. and Strack, E. (2008) Pearl production. In Southgate, P.C. and Lucas, J.S. (eds) The pearl oyster. Amsterdam: Elsevier, pp. 272–302.Google Scholar
Zwaan, J.C. and Groenenboom, P. (2014) Natural pearls from edible ‘true oysters’ in Zeeland, the Netherlands. Journal of Gemmology 34, 150–155.Google Scholar
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