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Biominerals in embryos, pluteus and adult Antarctic sea urchins Sterechinus neumayeri (CROSBI ID 28786)

Prilog u knjizi | izvorni znanstveni rad

Medaković, Davorin ; Popović, Stanko ; Manahan, T., Donal Biominerals in embryos, pluteus and adult Antarctic sea urchins Sterechinus neumayeri // Antarctic Biology in a Global Context / Huiskes, H., L., Ad ; Gieskes, W., C., Winfried ; Rozema, Jelte et al. (ur.). Amsterdam: Vrije Universiteit Amsterdam, 2003. str. 140-143-x

Podaci o odgovornosti

Medaković, Davorin ; Popović, Stanko ; Manahan, T., Donal

engleski

Biominerals in embryos, pluteus and adult Antarctic sea urchins Sterechinus neumayeri

X-ray powder diffraction (XRD) was used to study the mineral composition of embryos, early pluteus and adult Antarctic sea urchins Sterechinus neumayeri. The contents of minerals were determined by quantitative X-ray phase analysis. The fraction of Mg in magnesium celcite was measured from the angular shifts of diffraction lines in relation to the angular pè ; osition of the same diffraction lines of pure calcite. It was found that embryos and pluteus of S.neumayeri beside dominant amorphous components contained small amounts of clacite, traces of magnesite, dolomite, feldspars and amphiboles. Magnesium calcite was the dominant component of the skeleton and spines of adults. It was estimated that the fraction of Mg was 0.08 in spines and 0.13 in the skeleton. The adult urchin also contained in their calcified structures, like embryos and larvae, traces of feldspars and amphiboles. Such a combination of different minerals in invertebrate embryos, larvae or adults were not registered in recent literature.

Sterechinus neumayeri, sea urchin, pluteus larva, McMurdo, Antarctica, biomineralization

Rad u knjizi objavljen u poglavlju: Adaptation and Evolution in Extreme Environments.

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Podaci o prilogu

140-143-x.

objavljeno

Podaci o knjizi

Antarctic Biology in a Global Context

Huiskes, H., L., Ad ; Gieskes, W., C., Winfried ; Rozema, Jelte ; Schorno, M., L., Raymond ; Van der Vies, M., Saskia ; Wolf, J., Wim

Amsterdam: Vrije Universiteit Amsterdam

2003.

90-5782-079-X

Povezanost rada

Fizika, Geologija