World Congress of Malacology Antwerp ... - Unitas Malacologica

and morphological characters. Our study illustrates that sequence data collected for the DBI has to be
coupled with existing taxonomic routines and morphological data to contribute to an accurate
inventory of earth’s biodiversity.
Notes on the distribution of the genus Pagodulina (Gastropoda, Orculidae) in the Eastern
Mediterranean region: first record on the island of Rhodes (Greece)
Hölling, Michael
Spanischer Weg 32, D-44143 Dortmund, Germany,
Email: michael@hoelling.net
The finding of a tiny terrestrial snail from the Genus Pagodulina on the island of Rhodes is reported
for the first time. The non-marine snail fauna of the island has been investigated several times in the
past, but the only Orculids found so far were Orcula dolium and Schileykula scyphus. The
distribution of the Genus Pagodulina in the region is discussed.
British Marine Bivalves - A web-based taxonomic tool for bivalves from the intertidal to 5000m
Holmes, Anna M.; Oliver, P. Graham; Killeen, Ian J.; Turner, James
Department of Biodiversity & Systematic Biology, National Museum of Wales, Cathays Park,
Cardiff, CF10 3NP, Wales, UK,
Email: anna.holmes@museumwales.ac.uk
Tebble’s British Bivalve Seashells (1967) currently remains the primary taxonomic tool for the
identification of bivalves around the British Isles. Here coverage is restriced to shelf depths and both
the nomenclature and species list are in need of revision. Around the British Isles oil-exploration has
extended into continental margin and bathyal waters requiring ecological impact assessments to be
made. At these depths there is no single taxonomic tool available, filling this gap is the main
requirement of our major sponsor the Dept. of Trade & Industry.
This project, for the first time, will create a web-based taxonomic tool for all species of bivalves
found from the intertidal to the abyss. The geographic coverage will encompass between 48°N and
63°N and west as far as 20°W (Rockall). The project will include growth series (as available) and
many variations in shell form. A variety of keys will be made with the aim of facilitating multiple
comparisons. The imagery will all be taken using computer enhanced digital photography and
Scanning Electron Microscopy. Nomenclature will primarily follow CLEMAM, with any taxonomic
changes supported by published research.
Can freshwater mussel density be predicted by complex hydraulic parameters?
Hornbach, Daniel J. 1 ; Hove, Mark C. 1 ; MacGregor, Kelly R. 2
1. Department of Biology, Macalester College, St. Paul, MN 55105, USA,
Email: hornbach@macalester.edu; mark_hove@umn.edu
2. Department of Geology, Macalester College, St. Paul, MN 55105, USA,
Email: macgregor@macalester.edu
Freshwater mussels are among the most endangered animals in North America. Changes in water
quality, land use, and modification of rivers have been implicated in their decline. The St. Croix
River is home to a dense and diverse assemblage of mussels and serves as an important refuge for
these organisms. Despite their importance in rivers little is known about factors that control their
distribution and abundance. Simple habitat factors, such as water velocity, depth and substrate type,
are not strong predictors of abundance or diversity. The use of more complex hydraulic parameters
shows promise. We randomly selected 40 locations in a 5 km stretch of the St. Croix River between
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