In the present work, both seawater and limpets (Patella vulgata L.) were collected from different sampling points in the Vigo estuary area (Galicia, NW Spain) and their heavy metal concentrations (Zn, Cd, Pb, Cu) were determined by means of a voltammetric technique. The results showed a direct relationship between the heavy metal levels in seawater and the content in biological samples, especia...

En la Constantinopla del siglo XI el poeta Cristóforo Mitileneo compuso un calendario en metro yámbico, donde reproducía concisamente verso santoral año litúrgico. Después escribió tres variantes más, con distintas formas métricas, y se consagró como iniciador de nuevo subgénero literario, que obtuvo una exitosa recepción sociedad bizantina su tiempo posteridad, además ser rápidam...

Body size variation of the intertidal limpet Lottiu digitalis (Rathke) and the factors responsible for maintaining it were examined at three central California intertidal sites differing in wave exposure. Limpet body size increased with increasing tidal height. This increase in size with tidal height was correlated with exposure to wave splash and migratory behavior. In areas of high and interm...

a-N-Acetylgalaetosaminidase, devoid of P-N-acetylhexosaminidase, has been purified 860-fold from the limpet, Patella uulgata. The final preparation gives one protein band on disc gel electrophoresis, sodium dodecyl sulfate-disc gel electrophoresis, and disc gel isoelectrofocusing. By Sephadex G-ZOO filtration, the molecular weight of this enzyme is 200,000 at pH 4.2 and is 45,000 at pH 7.0. The...

1. alpha-Mannosidase from the limpet, Patella vulgata, was purified nearly 150-fold, with 40% recovery. beta-N-Acetylglucosaminidase was removed from the preparation by treatment with ethanol. The final product was virtually free from beta-galactosidase. 2. Limpet alpha-mannosidase was assayed at pH3.5 and at this pH it was necessary to add Zn(2+) for full activity. At pH5, the enzyme had the s...