On the physiological-biochemical state of kilka Clupeonella cultriventris (Clupeidae, Clupeiformes) in Rybinsk Reservoir (Russia)

被引：0
作者：
Khalko V.V. [1 ]
机构：
[1] Papanin Institute of Biology of Inland Waters, Russian Academy of Sciences
来源：
Journal of Ichthyology | 2007年 / 47卷 / 4期
基金：
俄罗斯基础研究基金会;
关键词：
Size Group; Total Lipid; Rybinsk Reservoir; Volga Basin; Biochemical State;
D O I：
10.1134/S0032945207040091
中图分类号：
学科分类号：
摘要：
The results of studies into lipid total content and fractional composition in the tissue and wholebody levels in kilka (Clupeonella cultriventris) are given. The fish studied belonged to various size-age groups and were sampled in Rybinsk Reservoir during active feeding periods in 2002 and 2005. A trend was revealed of deterioration of the physiological-biochemical state in adult specimens of this invasive species. This was especially true of the modal (in terms of their proportion in population) two-year-old fish. This was evidenced by a decrease in contents of total and reserve (triacylglycerol) lipids in fish muscles during the whole study period. It is shown that, in young kilka caught in all reservoir stretches in autumn, the values of these parameters depend on the time and rate of the reservoir water level decrease during the active feeding period. Probable reasons for changes in the physiological-biochemical state in adult and young specimens in the kilka population are discussed. The discussion is in view of the recent state of the Rybinsk Reservoir ecosystem which undergoes successional modification of the pelagic zooplankton community both at the level of large taxa and of some dominant species. © Nauka/Interperiodica 2007.
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页码：320 / 330
页数：10
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