First results on spawning, larval rearing and growth of the wedge sole (Dicologoglossa cuneata) in captivity, a candidate species for aquaculture |
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Authors: | Marcelino Herrera Ismael Hachero Montserrat Rosano José Francisco Ferrer José Manuel Márquez José Ignacio Navas |
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Institution: | (1) IFAPA Centro “Agua del Pino” (Junta de Andalucía), Ctra. Punta Umbría-Cartaya, 21450 Cartaya, Huelva, Spain |
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Abstract: | The wedge sole is a target species in the fisheries of the Gulf of Cadiz (Spain). Having reared them to commercial size, we
have studied reproduction and breeding in captivity of the wedge sole in this work here. The breeders adapt easily to captivity,
and they can spawn in less than 1 year in captivity. The relative fecundity is relatively high, 1.06–2.33 · 106 eggs kg−1 per spawning season (mean 1.6 ± 0.1). Larval SGR is high, 7.2 ± 0.2% day−1 (range 5.8–9.1), similar to other cultured flatfish species. In 1 year, some individuals reach market size and can release
eggs, registering SGRs of 1.39–1.66% day−1 (mean 1.56 ± 0.01). This species presents some very different characteristics with respect to other farmed flatfishes (turbot,
halibut and Senegal sole, mainly), so that it is necessary to develop new techniques to optimise its cultivation. In the present
work, the first results are presented on the biology of the wedge sole in captivity. |
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Keywords: | Wedge sole Spawning Growth Fecundity Flatfish culture |
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