Application of a digital pattern recognition system to Dinophysis acuminata and D-sacculus complexes

Other titles Utilisation d'un système d'analyse d'image numérique pour l'étude des complexes Dinophysis acuminata et D. sacculus
Type Article
Date 1996
Language English
Author(s) Truquet Philippe1, Lassus Patrick1, Honsell Giorgio2, Le Dean Loic3
Affiliation(s) 1 : IFREMER Centre de Nantes, BP 1105, 44311 Nantes Cedex 03, France
2 : Universita degli Studi di Trieste, Via A. Valerio 32/34, 34127 Trieste, Italy
3 : IFREMER, Centre Océanologique du Pacifique, BP 7004, Taravao, Tahiti, French Polynesia
Source Aquatic Living Resources (0990-7440) (Edp Sciences S A), 1996 , Vol. 9 , N. 3 , P. 273-279
DOI 10.1051/alr:1996031
WOS© Times Cited 11
Mot-Clé(s) Dinophysis sp., analyse d'image, taxonomie, phytoplancton
Keyword(s) Dinophysis sp, image analysis, taxonomy, phytoplankton
Abstract An image discrimination technique was developed to improve specific identification of some toxic Dinophysis cells (marine dinoflagellates involved in diarrhoeic shellfish poisoning), especially the ''acuminata'' and ''sacculus'' groups, which can be present at different ratios in natural sea-water samples collected during toxic episodes. This work was performed with image analysis software SAMBA (TITN Alcatel) using preserved cells directly observed through an inverted microscope and recorded with a video camera before further processing. All morphometric parameters used for discrimination of 7 different species or morphotypes of Dinophysis were tested with discriminant analysis. This study indicates that Dinophysis sp. and D. pavillardi seem well classified at the species level, whereas D. cf. acuminata and D. sacculus appear to be morphotypes of D. acuminata.
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