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Stock identification research can be classified as an observational study, the main characteristic of sampling being that there is no opportunity to repeat the process under similar conditions. To obtain useful information with this limitation, several considerations can be outlined. Time and space sampling require intensive field work. It is necessary to repeat sampling over time (more than 1 year...
As part of a multidisciplinary stock identification study 1002 horse mackerel Trachurus trachurus (L.) from 12 sites in the North-East Atlantic and Mediterranean Sea were examined for the presence of myxosporean parasites, with the aim of identifying species that could be used as biological tags. Five species of myxosporean parasites were found. Examination of gall bladders revealed infections with...
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