Effects of Ration Limitation and Low Temperature on Growth, Biochemical Condition, and Survival of Juvenile Summer Flounder from Two Atlantic Coast Nurseries
Effects of Ration Limitation and Low Temperature on Growth, Biochemical Condition, and Survival of Juvenile Summer Flounder from Two Atlantic Coast Nurseries
复制标题
日粮限制和低温对两个大西洋沿岸苗圃夏牙鲆幼鱼生长、生化状况和存活的影响
DOI：
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发表时间：
1994
期刊：
影响因子：
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通讯作者：
T. Targett
中科院分区：
文献类型：
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作者：
K. D. Malloy;T. Targett
摘要对来自特拉华州和北卡罗来纳州的幼鱼（体长25-80 mm）进行了室内试验，比较了它们对温度和摄食限制的反应。在2至20°C的温度下测量自由采食速率、最大生长速率和生长效率。尽管两个地点的鱼的自由摄食率没有差异，但在6至18°C之间，北卡罗来纳州幼鱼的最大生长率和生长效率高于特拉华州幼鱼。在沉降后的几个月内持续的温度（10-16°C）下，还测量了不同口粮的生长速率和生化条件的变化。在10-16°C下饥饿10-14天和次优口粮后，存活率很高（>98%），但生长率高度依赖于摄食率。维持口粮保持恒定之间10和16°C，但增长的范围随着温度的增加，北卡罗来纳州青少年的增长范围.
Abstract Laboratory experiments were conducted on juvenile summer flounder Paralichthys dentatus (25–80 mm total length) from Delaware and North Carolina nurseries to compare their responses to temperature and to ration limitation. Ad libitum feeding rates, maximum growth rates, and growth efficiency were measured at temperatures from 2 to 20°C. Although ad libitum feeding rates did not differ between fish from the two locations, North Carolina juveniles had higher maximum growth rates and growth efficiencies than Delaware juveniles between 6 and 18°C. Growth rates and changes in biochemical condition were also measured for different rations at temperatures that persist during the months following settlement (10–16°C). Survival was high (>98%) after 10–14 d of starvation and suboptimal rations at 10–16°C, but growth rates were highly dependent on feeding rates. Maintenance rations remained constant between 10 and 16°C, but scope for growth increased with temperature, Scope for growth of North Carolina juv...