Record Details

Precipitation of iron in windopane oyster shells by marine shell-boring cyanobacteria

DRS at CSIR-National Institute of Oceanography

View Archive Info
 
 
Field Value
 
Title Precipitation of iron in windopane oyster shells by marine shell-boring cyanobacteria
 
Creator Raghukumar, C.
Rao, V.P.
Iyer, S.D.
 
Subject Fouling and Boring
marine molluscs
shells
x-ray spectroscopy
calcium carbonates
boring organisms
oyster reefs
ISW, India, Goa, Zuari Estuary
 
Description Shells of windowpane oyster (Placuna placenta (L.)) in the intertidal zone of the Zuari Estuary, Goa, India were often found to be black in color. Microscopical observation of partially decalcified shells showed the presence of cyanobacterial filaments encrusted with black precipitate. Microchemical test (Prussian blue reaction) and wavelength dispersive x-ray analysis confirmed this precipitate to be of iron. Mineralogical studies of this black precipitate, using x-ray diffraction and scanning electron microscopy, suggested the presence of iron as iron oxides. The cyanobacteria from such black shells were cultured in enriched seawater medium. In this medium also they precipitated iron as confirmed by Prussian blue reaction. They were identified as Plectonema terebrans Born et Flah and Phormidium sp.
 
Date 1995-06-24T10:01:49Z
2017-09-30T01:29:58Z
1995-06-24T10:01:49Z
2017-09-30T01:29:58Z
1989
 
Type Journal Article
 
Identifier Geomicrobiology Journal, vol.7; 1989; 235-244
0149-0451
http://drs.nio.org/drs/handle/2264/7268
 
Language en
 
Relation Geomicrobiol J
SCI
 
Publisher Taylor & Francis