Bioreactor cultivation of the planktonic copepod <i>Acartia</i> <i>?</i> <i>steueri</i> Smirnov for egg collection
Bioreactor cultivation of the planktonic copepod <i>Acartia</i> <i>?</i> <i>steueri</i> Smirnov for egg collection
复制标题
生物反应器培养浮游桡足类 <i>Acaria</i> <i>?</i> <i>steueri</i> Smirnov 用于卵收集
DOI：
10.1111/are.15421
复制
发表时间：
2021
影响因子：
2
通讯作者：
Toda Tatsuki
中科院分区：
文献类型：
--
作者：
Takayama Yoshiki;Hirahara Minamo;Toda Tatsuki
桡足类是水产养殖中海鱼幼体的首选活食物（Støttrup，2003年）。以桡足类为食的鱼苗存活得更好（Wilcox等人，2006），更好地着色（Næss等人，1995年），并有更好的增长（Støttrup和Norsker，1997年）比那些喂养卤虫和/或轮虫。然而，尽管桡足类作为活食物的优势，它们的使用仍然有限，因为生产力低和密集的养殖成本。Acartia的物种是活饲料的良好候选者，因为它们的身体大小、游泳行为和生化组成都适合于许多具有小张口的海洋鱼类幼虫（Rajkumar，& Vasagam，2006; Wilcox等人，2006年）。蜱螨属的物种也产生休眠卵，其可以被储存和孵化以开始新的培养，或直接用于喂养幼鱼（汉森等人，2016; Takayama等人，2019年）。A. steueri Smirnov广泛分布于沿海沃茨，是重要商业鱼类幼虫的基本天然食物来源（Tanaka等人，在养殖中，遇到桡足类卵或后代的可能性随着成年桡足类密度的增加而增加。这种增加的密度的缺点是同类相食也可能增加，从而降低培养生产力（Drillet等人，2014年）。因此，需要将桡足类卵和后代与成体分离的技术。使用虹吸管的人工卵收集在纺锤水蚤培养中是常见的（Drillet等人，2011; Marcus & Wilcox，2007; Santhosh等人，2018; Støttrup等人，1986年），但自动化是必要的，以减少
Copepods are preferred live food for marine fish larvae in aquaculture (Støttrup, 2003). Fish larvae fed copepods survive better (Wilcox et al., 2006), are better pigmented (Næss et al., 1995) and have better growth (Støttrup & Norsker, 1997) than those fed Artemia and/or rotifers. However, despite the advantages of copepods as a live food, their use remains limited because of low productivity and intensive culture costs. Species of Acartia are good candidates for live feed because their body size, swimming behaviour and biochemical composition are all suitable for many marine fish larvae which have small gapes (Rajkumar, & Vasagam, 2006; Wilcox et al., 2006). Species of Acartia also produce dormant eggs which can be stored and hatched to start new cultures, or used directly to feed larval fish (Hansen et al., 2016; Takayama et al., 2019). One such species, A. steueri Smirnov, is widely distributed in coastal waters and represents an essential, natural food source for the larvae of commercially important fish (Tanaka et al., 1987).In culture, the likelihood of encountering copepod eggs or offspring is enhanced as adult copepod density increases. The downside to this increased density is that cannibalism might also increase, reducing culture productivity (Drillet et al., 2014). Accordingly, techniques to separate copepod eggs and offspring from adults are required. Manual egg collection using a siphon is common in Acartia culture (Drillet et al., 2011; Marcus & Wilcox, 2007; Santhosh et al., 2018; Støttrup et al., 1986), but automation is necessary to reduce