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Effect of feeding scheme and prey density on survival and development of Chinese mitten crab Eriocheir sinensis zoea larvae |
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| Authors: | Li-ying Sui Mathieu Wille Xu-gan Wu Yong-xu Cheng & Patrick Sorgeloos |
| Institution: | Laboratory of Aquaculture &Artemia Reference Center, Gent University, Gent, Belgium; Salt Research Institute of China National Salt Industry Corporation, Tanggu, Tianjin, China; Laboratory of Aquatic Genetic Resources &Aquaculture Ecosystem, Shanghai Fisheries University, Shanghai, China |
| Abstract: | The effect of feeding scheme and prey density on survival and development of Eriocheir sinensis zoea larvae was studied in three experiments. Different combinations and densities of rotifers (Brachionus rotundiformis) and newly hatched Artemia nauplii were fed to zoea larvae. Average survival at each stage, larval development (larval stage index, LSI), duration of zoeal stage and individual megalopa dry weight were compared among treatments. This study revealed that, under the experimental conditions, rotifers should be replaced with Artemia between the zoea 3 (Z3) and the zoea 4 (Z4) stage. The optimal rotifer feeding densities for zoea 1 (Z1) and zoea 2 (Z2) were 15 and 20 mL?1 respectively, while the optimal Artemia feeding density for Z3, Z4 and zoea 5 (Z5) was 3, 5 and 8 mL?1 respectively. Further trials in production scale are recommended. |
| Keywords: | Eriocheir sinensis larvae feeding schemes rotifer density Artemia density |