两种淡水双壳类(Unio terminalis, Unionida和Corbicula fluinea, Venerida)在两种再现条件下的生存期和行为调整

IF 0.9 4区 环境科学与生态学 Q4 LIMNOLOGY
M. Güler
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引用次数: 0

摘要

浅水区的淡水双壳类动物经常暴露在长时间的干旱中,由于它们的流动性有限,受到高度影响。它们对重现的适应是生存的关键因素,特别是在人为造成的非自然水势波动或短期干旱期间。在本研究中,对两种淡水双壳类(Unio terminalis, Unionidae和Corbicula fluinea, Cyrenidae)在两种实验再现条件(存在饱和水沉积物和没有沉积物)下的生存时间进行了测试。在水饱和沉积物处理下,终末鲟的平均生存时间(992小时)是不含沉积物处理(448小时)的两倍多。在含水饱和沉淀物处理下的平均存活时间(278 h)比无沉淀物处理(174 h)长50%以上。这两个物种都可能根据环境条件做出行为调整,以应对饱和水沉积物的存在,并最大限度地提高生存机会。总的来说,在两种处理下,终末镰刀菌的存活时间都明显长于氟化镰刀菌。没有观察到两个物种的大小对生存的影响。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
Survival durations and behavioural adjustments of two freshwater bivalves (Unio terminalis, Unionida and Corbicula fluminea, Venerida) under two emersion conditions
Freshwater bivalves in shallow waters are often exposed to extended periods of drought and are highly affected due to their limited mobility. Their adaptation to emersion is a key factor for survival, particularly during human-made unnatural water regime fluctuations or short-term droughts. In the current study, survival durations of two freshwater bivalve species (Unio terminalis, Unionidae and Corbicula fluminea, Cyrenidae) were tested under two experimental emersion conditions (presence of water-saturated sediment and without sediment). U. terminalis' mean survival duration more than doubled in the water-saturated sediment treatment (992 h) compared to treatment without sediment (448 h). For C. fluminea, the mean survival duration in the water-saturated sediment treatment (278 h) was over 50% longer than that recorded in the treatment without sediment (174 h). Both species probably made behavioral adjustments according to the environmental conditions to respond to the presence of the water-saturated sediment and maximized their survival chances. In general, U. terminalis survived significantly longer than C. fluminea in both treatments. No effects of size on survival were observed for either species.
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来源期刊
CiteScore
2.20
自引率
0.00%
发文量
0
审稿时长
>12 weeks
期刊介绍: Annales de Limnologie - International Journal of Limnology publishes papers on the ecology of freshwater systems, ranging from studies of aquatic organisms, physical and chemical works which relate to the biological environment, to ecological applications and frameworks for water management directives. Main topics: Ecology of freshwater systems ; biodiversity, taxonomy, distribution patterns in space and time, biology of animals and plants ; experimental and conceptual studies which integrate laboratory and/or field work on physiology, population dynamics, biogeochemistry and nutrient dynamics, management, mathematical modelling ; techniques for sampling and chemical analyses, ecological applications, procedures which provide frameworks for environmental legislation.
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