have shown that this distinction is not justified, because a complete range of these shapes can be found within the same species and depend on the ontogeny of the organism. Cibicidids were sampled in three sites around Svalbard and one site off NE Iceland. They were usually cemented to hard substrates such as shells or rocks and were found at depths between 148m and 700m. After documenting their morphology with Scanning Electron Microscope (SEM) images, the specimens were crushed for DNA extraction and amplification of a partial 3' SSU (small subunit) rDNA fragment. The sequences were found to be very similar to published sequences of from Cibicidoides variabilis Patagonia and ITS (Internal Transcribed Spacer) region was therefore sequenced to ascertain the degree of similarity between both populations. Results showed complete ITS sequence identity, confirming that they were the same genetic type as in Patagonia. In opposition to their genetic identity, Arctic specimens have a regular coiling habit while Patagonian express chaotic coiling. This explains why the morphospecies was not identified in C. variabilis, Svalbard until it was genetically characterised. This example illustrates the limitation of morphologically-based taxonomy and highlights the need to use a three-stage approach to taxonomy based on strict morphological criteria to link molecular identification and traditional taxonomy. This approach comprises genotyping, the production of a formal morphological description of the SEM images associated with the genetic type and then the allocation of the most appropriate taxonomic name by comparison with the formal type description. Motion behaviour of intertidal benthic foraminifera: new approaches and ecological perspectives Seuront L., Bouchet V. M. P. CNRS and Université Lille 1, Laboratory of Oceanology and Geosciences Motion behaviour of benthic foraminifera have been so far poorly studied. Displacements have been described using simple parameters i.e. distances and mean speed. Detailed study of trajectories is informative on the ecology of a species. Indeed,
have shown that this distinction is not justified, because a complete range of these shapes can be found within the same species and depend on the ontogeny of the organism. Cibicidids were sampled in three sites around Svalbard and one site off NE Iceland. They were usually cemented to hard substrates such as shells or rocks and were found at depths between 148m and 700m. After documenting their morphology with Scanning Electron Microscope (SEM) images, the specimens were crushed for DNA extraction and amplification of a partial 3' SSU (small subunit) rDNA fragment. The sequences were found to be very similar to published sequences of Cibicidoides variabilis from Patagonia and ITS (Internal Transcribed Spacer) region was therefore sequenced to ascertain the degree of similarity between both populations. Results showed complete ITS sequence identity, confirming that they were the same genetic type as in Patagonia. In opposition to their genetic identity, Arctic specimens have a regular coiling habit while Patagonian express chaotic coiling. This explains why the morphospecies C. variabilis, was not identified in Svalbard until it was genetically characterised. This example illustrates the limitation of morphologically-based taxonomy and highlights the need to use a three-stage approach to taxonomy based on strict morphological criteria to link molecular identification and traditional taxonomy. This approach comprises genotyping, the production of a formal morphological description of the SEM images associated with the genetic type and then the allocation of the most appropriate taxonomic name by comparison with the formal type description. Motion behaviour of intertidal benthic foraminifera: new approaches and ecological perspectives Seuront L., Bouchet V. M. P. CNRS and Université Lille 1, Laboratory of Oceanology and Geosciences Motion behaviour of benthic foraminifera have been so far poorly studied. Displacements have been described using simple parameters i.e. distances and mean speed. Detailed study of trajectories is informative on the ecology of a species. Indeed,
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