CHIANTORE , Mariachiara

Adamussium colbecki is one of the most wellstudied Antarctic molluscs. However, information on its growth rate is currently based on estimates from mark and recapture experiments and from growth-ring analyses. This paper provides the first estimates of the growth pattern of this scallop throughout a year, for individuals maintained under both...

Blooms of toxic dinoflagellates belonging to the genus Ostreopsis in coastal areas are a topic of increasing interest due to the potential hazard that these species might pose to marine organisms and to human health, and the consequent negative effect on tourism, fishery and aquaculture economy. For the last 15 years, blooms of Ostreopsis...

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Capulus subcompressus Pelseneer, 1903 (Gastropoda: Capulidae) is a small epibiont gastropod living at Terra Nova Bay (Ross Sea) down to 540 m on the calcareous tubes of its unique host, the serpulid Serpula narconensis Baird, 1865. This polychaete forms bush-like aggregates which host a rich microfauna of crustaceans, hydroids and molluscs. In...

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A population of Spisula subtruncata was studied in four different years (1983-1984; 1990-1993) on a shallow sandy bottom in the Ligurian Sea. Throughout the studied period, the S. subtruncata population was characterised by wide seasonal and interannual fluctuations both in abundance and biomass. Its life-cycle was normally annual, and there...

Biotic interactions are particularly relevant in stable environments, such as the High Antarctic areas. Among them, predation has a key role in structuring com- munity and population variables, including size-frequency distribution. This study aims to quantify the impact of pre- dation by the notothenioid sh Trematomus bernacchii on the...

Hydractinia angusta Hartlaub, 1904 has been recorded at Terra Nova Bay (Ross Sea, Antarctica) as epizoic on shells of the Antarctic scallop Adamussium colbecki. The species can exploit di erent trophic re- sources: ®rst, polyps are able to detach and ingest tube feet and pedicellariae from the sea urchins Sterechinus neumayeri, grazing on the...

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The aim of this work is to improve the knowledge of the mollusc fauna of Terra Nova Bay (Ross Sea), on the basis of more than 100 stations sampled from 25 to 1100 m depth, during Italian Ant- arctic Expeditions (austral summers 1987/1988, 1989/ 1990, 1993/1994, 1994/1995, 1995/1996 and 1997/1998). In shallow waters, gastropod fauna is...