Pregled bibliografske jedinice broj: 41372
Mineralni sastav ljuštura slatkovodnog puža Belgrandiella fontinalis i Belgrandiella kuesteri (Mollusca: gastropoda: Hydrobiidae)
Mineralni sastav ljuštura slatkovodnog puža Belgrandiella fontinalis i Belgrandiella kuesteri (Mollusca: gastropoda: Hydrobiidae) // Zbornik sažetaka priopćenja sedmog Hrvatskog biološkog kongresa / Ljubešić, Nikola (ur.).
Zagreb, 2000. str. 222-223 (predavanje, nije recenziran, sažetak, znanstveni)
CROSBI ID: 41372 Za ispravke kontaktirajte CROSBI podršku putem web obrasca
Naslov
Mineralni sastav ljuštura slatkovodnog puža Belgrandiella fontinalis i Belgrandiella kuesteri (Mollusca: gastropoda: Hydrobiidae)
(The mineralogy of freshwater snail shells of Belgrandiella fontinalis and Belgrandiella kuesteri (Mollusca: Gastropoda: Hydrobiidae)
Autori
Medaković, Davorin ; Slapnik, Rajko ; Popović, Stanko
Vrsta, podvrsta i kategorija rada
Sažeci sa skupova, sažetak, znanstveni
Izvornik
Zbornik sažetaka priopćenja sedmog Hrvatskog biološkog kongresa
/ Ljubešić, Nikola - Zagreb, 2000, 222-223
Skup
7.Hrvatski biološki kongres
Mjesto i datum
Hvar, Hrvatska, 24.09.2000. - 29.09.2000
Vrsta sudjelovanja
Predavanje
Vrsta recenzije
Nije recenziran
Ključne riječi
Slatkovodni puž Belgrandiella fontinalis; Belgrandiella kuesteri. mineralni sastav
Sažetak
X-ray powder diffraction (XRD) was used to study the mineral composition of shells of snails Belgrandiella fontinalis (F.Schmidt 1847) and Belgrandiella kuesteri (Boeters 1970) collected from three freshwater springs in northeastern Slovenia. It was found that the studied shells contained aragonite, calcite, dolomite and quartz. The fractions of minerals in particular shells were determined.
XRD showed that the analysed gastropod shells consisted of two or more distinct inorganic layers. The outer shell layer for all species and all sampling localities contained aragonite. The outer layer of B. fontinalis collected at one locality, contained also a small fraction of calcite (~1 molar %) besides the dominant aragonite. Calcite was identified in the inner layer(s) of both studied species (2 to 3 molar %), while quartz was found only in B.kuesteri (5-7 molar %). However, both species sampled at one of the localities showed the presence of dolomite (about 20 molar %) in the inner layer(s). The presence of dolomite in the shells of adult gastropods and even molluscs is unusual. A possible formation mechanism and specific ecological factor which could influence the precipitation of dolomite in the shells of different Belgrandiella species is discussed.
Izvorni jezik
Hrvatski
Znanstvena područja
Biologija
