Hatching of Rotifer Eggs from Reservoir Sediment
Hatching of Rotifer Eggs from Reservoir Sediment
复制标题
从水库沉积物中孵化轮虫卵
DOI：
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发表时间：
2004
期刊：
影响因子：
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通讯作者：
D. White
中科院分区：
文献类型：
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作者：
Christopher J. Albritton;D. White
摘要在肯塔基州湖的一个mainstem水库海湾中，研究了干旱和再湿润对轮虫卵库孵化的影响：一个沿岸的区域，一个很少被淹没的洪泛区，一个永久湿润的海湾。从表层沉积物孵化也进行了比较，从4-10厘米和14-20厘米深的沉积物孵化。七个轮虫物种通常与沿岸的区和其他两个浮游动物物种孵化的沉积物复湿。没有浮游物种孵化。通常经历干燥和再湿润循环的表层沉积物比永久湿润的沉积物有更多的物种。卵在较深的沉积物中孵化得比在表层沉积物中更快。结果表明，水库水位波动可能发挥作用，轮虫群落动态提供了有利的条件，为沿岸的以及浮游物种。
Abstract The effects of drying and rewetting on rotifer egg bank hatching were examined for three habitats in a mainstem reservoir embayment, Kentucky Lake, KY: a littoral zone with an annual drying and wetting cycle, a floodplain that was only rarely inundated, and a permanently wetted embayment. Hatching from surface sediments also was compared with hatching from sediments 4–10 cm and 14–20 cm deep. Seven rotifer species normally associated with littoral zones and two other zooplankton species hatched from sediments following rewetting. No pelagic species hatched. Surface sediments normally experiencing drying and rewetting cycles had a greater number of species than permanently wetted sediments. Eggs hatched more quickly from deeper than surface sediments. Results demonstrated that reservoir water level fluctuations may play a role in rotifer community dynamics by providing favorable conditions for littoral as well as pelagic species.