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| Lelievre, Stephanie; Antajan, Elvire; Vaz, Sandrine. |
| One of the problems concerning studies of fish egg distribution is the weak spatial and temporal resolution due to the workload that examination of a large number of samples would demand. Recently, the development of a new laboratory imaging system, the ZooScan, capable of obtaining relatively good resolution images enables automated zooplankton identification using supervised learning algorithms. This new approach was applied to formalin-fixed fish egg samples collected during French winter IBTS (International Bottom Trawl Surveys) in the Eastern English Channel and the Southern North Sea. Fish egg spatial distributions of seven species based on the microscope and ZooScan identifications were compared. Abundance and distribution maps of winter-spawning... |
| Tipo: Text |
Palavras-chave: Fish eggs; ZooScan; Image analysis; Supervised learning method; Interpolated map. |
| Ano: 2012 |
URL: http://archimer.ifremer.fr/doc/00074/18552/16103.pdf |
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| Lelievre, Stephanie; Verrez-bagnis, Veronique; Jerome, Marc; Vaz, Sandrine. |
| A better knowledge on spawning grounds of principal commercial fishes from North Sea is necessary for their monitoring. Fish egg taxonomic identification based on morphological characters cannot always be carried out effectively. This is particularly the case for a number of Gadidae fish species eggs (i.e. cod, haddock and whiting, and three rockling species) which have the same range of size and for which molecular-based techniques can help improving the accuracy of egg taxonomic identification, and hence the reliability of studies on spawning areas. In this study, formalin fixation, egg conservation and DNA extraction were optimized in order to develop a specific PCR-RFLP method. Based on the sequence of the cytochrome b gene of reference specimens, a... |
| Tipo: Text |
Palavras-chave: Fish eggs; PCR-RFLP; Cytochrome b gene; Geostatistical analyses; Interpolated map. |
| Ano: 2010 |
URL: http://archimer.ifremer.fr/doc/00005/11613/8259.pdf |
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