Growth and survival of juvenile lined seahorse, Hippocampus erectus (Perry), at different stocking densities

被引:25
作者
Zhang, Dong [1 ,2 ]
Zhang, Yinghui [2 ]
Lin, Junda [2 ]
Lin, Qiang [2 ,3 ]
机构
[1] Chinese Acad Fisheries Sci, E China Sea Fisheries Res Inst, Shanghai 200090, Peoples R China
[2] Florida Inst Technol, Vero Beach Marine Lab, Vero Beach, FL USA
[3] Chinese Acad Sci, Key Lab Trop Marine Environm Dynam, S China Sea Inst Oceanol, Guangzhou, Guangdong, Peoples R China
关键词
Hippocampus erectus (Perry); density; growth; survival; seahorse; EMBRYONIC-DEVELOPMENT; CULTURED SEAHORSES; ARCTIC CHARR; FOOD-INTAKE; TEMPERATURE; ABDOMINALIS; TELEOSTEI; BEHAVIOR; LIGHT;
D O I
10.1111/j.1365-2109.2010.02482.x
中图分类号
S9 [水产、渔业];
学科分类号
0908 ;
摘要
The lined seahorse, Hippocampus erectus (Perry), is an important species in both medicinal and aquarium trades. The aim of this study was to evaluate the effects of stocking density (1, 3 and 5 individuals L-1) on the growth performance and survival of the early-stage juvenile H. erectus. The height (HT), wet weight, weight gain (WG) and specific growth rate (SGR) were affected significantly by the stocking density during the 40-day study. The HT, WG and SGR of the seahorse at 1 and 3 juveniles L-1 were significantly higher than that at 5 juveniles L-1. The survival of juveniles at the three stocking densities was not significantly different at day 25 (90.3 +/- 4.5%, 86.7 +/- 4.2% and 86.2 +/- 3.8% for 1, 3 and 5 juveniles L-1 respectively), but was significantly different at day 40 (87.8 +/- 3.9%, 69.6 +/- 4.2% and 52.9 +/- 2.8% for 1, 3 and 5 juveniles L-1 respectively). For the early-stage juvenile H. erectus, we recommend a stocking density of 3 juveniles L-1, but the density should be reduced to 1-2 juveniles L-1 to avoid reduced and variable growth and high mortality after 25 days.
引用
收藏
页码:9 / 13
页数:5
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