枯水期鄱阳湖子湖轮虫休眠卵空间分布特征（英文）  

SPATIAL DISTRIBUTION CHARACTERISTICS OF ROTIFER RESTING EGGS IN SUBLAKES OF THE POYANG LAKE WETLAND AREA DURING THE DRY SEASON

作　　者：秦海明[1,2,3] 晏俊伟 聂雪 王文娟[1,2,3] 沈啸远[1] QIN Hai-Ming;YAN Jun-Wei;NIE Xue;WANG Wen-Juan;SHEN Xiao-Yuan(Center for Watershed Ecology,Institute of Life Science,Nanchang University,Nanchang 330031,China;Key Laboratory of Poyang Lake Environment and Resource Utilization,Ministry of Education,Nanchang University,Nanchang 330031,China;National Ecosystem Research Station of Jiangxi Poyang Lake Wetland,Nanchang 330038,China)

机构地区：[1]南昌大学生命科学研究院流域生态学研究所,南昌330031 [2]南昌大学鄱阳湖环境与资源利用教育部重点实验室,南昌330031 [3]江西鄱阳湖湿地生态系统国家定位观测研究站,南昌330038

出　　处：《水生生物学报》2018年第6期1232-1239,共8页Acta Hydrobiologica Sinica

基　　金：Supported by the National Natural Science Foundation of China(31560133)

摘　　要：为了研究枯水期鄱阳湖子湖泊轮虫休眠卵空间分布的差异,于2015年1月份,在鄱阳湖南矶山湿地自然保护区的南深湖和白沙湖2个子湖泊进行取样调查。研究发现,不同生境类型中轮虫休眠卵的密度具有显著差异(P<0.05),轮虫休眠卵的分布具有明显的梯度性,在洲滩植被区、泥滩区和积水区中轮虫休眠卵的密度逐渐减少。南深湖植被区中轮虫休眠卵的密度最高,为(3.34±1.28) ind./cm3,茭白中密度高达5.45 ind./cm3。不同水生植被生境中轮虫休眠卵的密度趋势为:挺水植物>洲滩植物>浮叶植物>沉水植物。不同水深区轮虫休眠卵的分布不具有明确的规律性。此外,研究还发现轮虫休眠卵的密度与底泥的软硬程度具有一定相关性,泥质越软,轮虫休眠卵的密度越低。Our study examined spatial distribution differences of rotifer resting eggs(RRE)in lakes of the Poyang Lake Wetland Area during dry season,January 2015.Field sampling was conducted in both Nanshen Lake and Baisha Lake.We found that densities of RRE in different habitats were significantly different(P<0.05),and their distribution had an obvious gradient.The highest mean density was in the marshland vegetation area of Nanshen Lake,where it was(3.34±1.28)ind./cm3.The density of resting eggs in the Zizania latifolia area was up to 5.45 ind./cm3.The density of RRE was different spatially,with the greatest in the vegetation area,then in the muddy area,and then the lowest in the water area.ANOVAs results showed that water depth,vegetation,and sediment had significant effects on RRE(P=0.001,P=0.007,P<0.001,respectively).The trend of resting egg densities in different aquatic habitats was:emergent aquatic plant>marshland vegetation>floating-leaf plants>submerged plants.The distribution of RRE in areas of different water depths was inconsistent.The density of RRE was higher in the hard than soft sediment.

关 键 词：轮虫 休眠卵 空间分布 子湖 鄱阳湖 

分 类 号：S932.8[农业科学—渔业资源]