The effect of salinity on the growth, energy budget and physiological performance of green, white and purple color morphs of sea cucumber, Apostichopus japonicus
The effect of salinity on the growth, energy budget and physiological performance of green, white and purple color morphs of sea cucumber, Apostichopus japonicus
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DOI：
10.1016/j.aquaculture.2014.12.020
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发表时间：
2015-02-01
期刊：
影响因子：
4.5
通讯作者：
Yang, Hongsheng
中科院分区：
文献类型：
--
作者：
Bai, Yucen;Zhang, Libin;Yang, Hongsheng
仿刺参Apostichopus nativa（Selenka）在潮间带和养殖池中能耐受盐度的波动。本研究对中国对虾幼虾的绿色、白色和紫色变种进行了比较研究。在22、26、30、34和38的盐度下培养盐藻（1.0 +/-0.1g）60天。研究了盐度对梭梭生长、能量分配和生理表现的影响。他下定决心。结果表明，三种颜色的变异体在盐度22 ~ 38范围内均能存活。盐度对海参的生长、能量分配和生理性能有显著影响（P < 0.05）。比生长率、摄食率和饲料转化率。盐度为30时，日本对虾生长最适。同样的结果也适用于能量摄入和分配给生长的能量比例。海参体内酶活性的显著变化主要发生在盐度为22和38时，表明低盐度和高盐度对海参的代谢均有影响。绿色A.在盐度为22时，黄姑鱼的生长速度快于白色和紫色变异体。在盐度30、34和38时，紫色藻生长速率最高，其次为绿色，白色藻生长速率最低。在盐度为22时，绿色分配更多的能量用于生长和呼吸。当盐度达到34和38时，紫色体将更多的能量分配给生长和呼吸。在盐度为30、34和38时，紫色体具有较高的胰蛋白酶和超氧化物歧化酶活性，这为紫色体比绿色体和白色体更高的特定生长率和食物转化率提供了支持。结果清楚地表明，在耐受范围内，绿色变体在低盐度下表现更好，而紫色变体更好地适应高盐度。(C)2014爱思唯尔有限公司版权所有。
The sea cucumber Apostichopus japonicus (Selenka) tolerates salinity fluctuations when inhabiting the intertidal zone and culture ponds. In this study, green, white and purple morphs of juvenile A. japonicus (1.0 +/- 0.1 g) were cultured at salinities of 22, 26, 30, 34 and 38 for 60 days. The influence of salinity on the growth, energy allocation and physiological performance of A. japonicus was determined. The results indicated that the three color morphs tested could survive within the salinity range of 22- 38. Salinity had a significant effect on the growth, energy allocation and physiological performance of sea cucumbers (P < 0.05). Specific growth rates, ingestion rates and feed conversion efficiencies of A. japonicuswere generally optimal at a salinity of 30. Similar resultswere obtained for energy ingested, and the proportion of energy allocated to growth. Significant changes in enzyme activities of sea cucumbers mainly occurred at salinities of 22 and 38, indicating that metabolism was affected by low and high salinities. Green A. japonicus grew faster than the white and purple color morphs at a salinity of 22. Growth rateswere the highest in purple, then green and the lowest inwhite colormorphs at salinities of 30, 34 and 38. At a salinity of 22, the green allocated more energy to growth and respiration. The purple morph allocated more energy to growth and respiration whenwater salinity reached 34 and 38. At salinities of 30, 34 and 38, the purple morph had higher trypsin and superoxide dismutase activities, which supported the higher specific growth rate and food conversion rates comparedwith the green andwhite colormorphs. The results clearly showed that the green color morph performed better at low salinities, while the purple was better adapted to high salinities within the tolerance range. (C) 2014 Elsevier B.V. All rights reserved.