Stocking density and its influence on shape of Senegalese sole adults |
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| Authors: | Pedro Pablo Ambrosio Corrado Costa Pablo Sánchez Rosa Flos |
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| Institution: | (1) Department of Agri-food Engineering and Biotechnology, Technical University of Catalonia (UPC), Av. Canal Olímpic, s/n., 08860 Castelldefels, Barcelona, Spain;(2) Centre de Referència de Recerca i Desenvolupament en Aqüicultura de la Generalitat de Catalunya, Barcelona, Spain;(3) Agritech Lab CRA-I.S.M.A. (Council for Research in Agriculture—Agricultural Mechanization Research Institute), Via della Pascolare, 16, 00016 Monterotondo, Rome, Italy |
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| Abstract: | Morphological changes in Senegalese sole adults (Solea senegalensis Kaup, 1858) reared at two stocking density conditions (low stocking density, 60% of bottom occupation and high stocking density,
180% of bottom occupation) were investigated using geometric morphometrics. Canonical variate analysis on weight matrix scores,
including the uniform component (W′), at the end of the experiment revealed differences in body shape between experimental
groups. The low density group presented a similar change pattern as that of the high density group but was less intense. Differences
were discussed in terms of the effect of a high stocking density on the shape of soles which were very close to commercialization.
Results did not indicate a significant size-related shape, likely due to fish age. Our results provide the first promising
look at environment-related shape changes in reared sole. |
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| Keywords: | Solea senegalensis Geometric morphometrics Shape Stocking density |
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