The impact of short-term fluctuations of temperature on the production indices of aquatic animals: Oreochromis niloticus (L.) and Pistia stratiotes (L.)

被引:2
|
作者
Pushkar', V. Ya. [1 ]
Zdanovich, V. V. [1 ]
Kelekhsaev, M. Z. [1 ]
机构
[1] Moscow MV Lomonosov State Univ, Moscow 119992, Russia
基金
俄罗斯基础研究基金会;
关键词
Nile tilapia Oreochromis niloticus L; water lettuce Pistia stratiotes L; periodic fluctuations of temperature; growth; energetic; and production indices; NILE TILAPIA; GROWTH-CHARACTERISTICS; WATER LETTUCE; PERFORMANCE; MACROPHYTES; CONSTANT;
D O I
10.1134/S1995082910030120
中图分类号
Q17 [水生生物学];
学科分类号
071004 ;
摘要
Short-term small periodic fluctuations of temperature within the range of ecological valence are favorable for Nile tilapia Oreochromis niloticus L. and water lettuce Pistia stratiotes L. At alternate thermal regimes, the specific growth rate is higher, production and energetic indices are better, the efficiency of food utilization for growth is higher, and the expense of oxygen on gaining the mass unit of a fish body is lower when compared to the optimal for constant thermal regimes of growth. During temperature fluctuations, the mineralization rate of dissolved and suspended organic matter increases.
引用
收藏
页码:282 / 290
页数:9
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