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首页> 外文期刊>Aquaculture International >Mesocosm: a reliable technology for larval rearing of Diplodus puntazzo and Diplodus sargus sargus
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Mesocosm: a reliable technology for larval rearing of Diplodus puntazzo and Diplodus sargus sargus

机译：中观：一种可靠的技术，用于双翅目和and龙的幼虫饲养

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Species diversification is today considered as a major issue for the sustainable development of the Mediterranean aquaculture For successful propagation of any species however, larval rearing is considered a bottleneck and therefore the development ofappropriate tools is essential. Mesocosm is a semi-intensive technology that facilitates larval rearing of several species integrating principles of both intensive and extensive aquaculture, whicb solves biological problems and many of their technical,human and economical consequences The extensive (and now even the semi-extensive) strategy is used in the most critical segments of the rearing process during the early developmental stages, when larvae are still extremely weak, sensitive to intensive environment, easily stressed and difficult to feed The intensive strategy is used as soon as larvae are considered mature enough to be reared easily using classical methods. The technology was used for the rearing of two species, with potential for aquaculture, the sharpsnout seabream (Diplodus puntazzo) and the white seabream (Diplodus sargus sargus). Three groups of each species were monitored for a period of 50-70 days post hatching Survival for both species was about 54% at the end of the trials. Sharpsnout seabream larvae reached 19.6±0.9mm total length and 107.2±31.9mg body weight 50 days post hatching White seabream larvae 60 days post hatching reached 327±27rnm total length and 450± 70mg body weight. In order to verify the economical viability of the technology, the individual production cost for each species was estimated and reached ?0 027 for white seabream and 0.043 EUR for sharpsnout seabreaml Results indicate the reliability of the technology for the larval rearing of the two species.
机译：如今，物种多样化已被视为地中海水产养殖业可持续发展的主要问题。然而，对于任何种类的成功繁殖而言，幼体饲养被视为瓶颈，因此开发适当的工具至关重要。 Mesocosm是一种半集约化技术，它结合了集约化和粗养型水产养殖的原理，促进了几个物种的幼体饲养，解决了生物学问题及其许多技术，人力和经济后果。广泛的（现在甚至是半广泛的）策略是当幼虫仍然非常脆弱，对密集环境敏感，易受压力且难以喂养时，用于发育初期最关键的阶段。一旦认为幼虫足够成熟就可以使用密集策略轻松使用经典方法。该技术被用于养殖两种有水产养殖潜力的物种，即尖嘴鲷（Diplodus puntazzo）和白鲷（Diplodus sargus sargus）。孵化后对每个物种的三组进行了50-70天的监测，试验结束时两种物种的存活率约为54％。孵化后50天的Sharpsnout鲷鱼幼体总长达到19.6±0.9mm，体重为107.2±31.9mg。孵化后60天，白鲷鱼幼体达到总长327±27rnm，体重为450±70mg。为了验证该技术在经济上的可行性，估计了每个物种的个体生产成本，白鲷的成本达到了0 027欧元，Sharpsnout seabreaml的成本达到了0.043欧元。结果表明，该技术在两个物种的幼体饲养中的可靠性。

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