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首页> 外文期刊>International Aquatic Research >Influence of water management, photoperiod and aeration on growth, survival, and early spat settlement of the hatchery-reared green mussel, Perna viridis
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Influence of water management, photoperiod and aeration on growth, survival, and early spat settlement of the hatchery-reared green mussel, Perna viridis

机译：水分管理，光周期和曝气对孵化场养殖的贻贝生长，存活和早期成虫的影响， Perna viridis

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In an attempt to induce early spat settlement and improve mussel seed production, this study aims to determine the influence of water management, photoperiod, and aeration, on the growth, survival and settlement of green mussel ( Perna viridis ). Water in the pediveliger rearing tanks was changed every day, every 3?days and every 5?days for the water-management experiment. Pediveligers were exposed in 24L:0D h (light: dark), 12L:12D h and 0L:24D h conditions for the photoperiod experiment. Three aeration intensities were also tested—mild (10?L?h_(?1)), moderate (20?L?h_(?1)), and strong (30?L?h_(?1)). This study demonstrated that changing water every 3?days was effective in maintaining the rearing water quality and improving the growth and survival of P. viridis larvae. Highest growth and survival rates were observed in P. viridis spats grown in 0L:24D h photoperiod. There was no significant difference in the settlement rate of larvae exposed to different photoperiods. Mild aeration has shown to improve the growth of P. viridis larvae, but higher survival and settlement rates were attained in the strongly-aerated conditions. Therefore, when the larvae start to settle, it is recommended to expose them to darkness, change the water every 3?days and provide a strong aeration to be able to attain high survival and settlement rates, and bigger spats.
机译：为了尝试尽早达成并解决贻贝种子生产问题，本研究旨在确定水分管理，光周期和通气对青口贻贝（Perna viridis）的生长，存活和沉降的影响。在水管理实验中，每天都要每3天和5天更换一次花椒饲养池中的水。在光周期实验中，在24L：0D h（亮：暗），12L：12D h和0L：24D h的条件下暴露定律剂。还测试了三种曝气强度：轻度（10？L？h _（？1）），中度（20？L？h _（？1））和强（30？L？h _（？1））。这项研究表明，每3天换水可以有效地维持饲养水的质量，并改善绿假单胞菌幼虫的生长和存活。在0L：24D h光周期下生长的绿色假单胞菌繁殖物中观察到最高的生长和存活率。暴露于不同光周期的幼虫的沉降速率没有显着差异。轻度曝气已显示可改善绿假单胞菌幼虫的生长，但在强曝气条件下可实现更高的存活率和沉降率。因此，当幼虫开始沉降时，建议将它们暴露在黑暗中，每三天更换一次水，并提供强大的通气，以达到较高的存活率和沉降率，并获得更大的吐出量。

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