Consequences of detritus type in an aquatic microsystem: effects on water quality, micro-organisms and performance of the dominant consumer.
Consequences of detritus type in an aquatic microsystem: effects on water quality, micro-organisms and performance of the dominant consumer.
复制标题
水生微系统中碎屑类型的后果：对水质、微生物和主要消费者性能的影响。
DOI：
10.1111/j.1365-2427.2005.01504.x
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发表时间：
2006
影响因子：
2.7
通讯作者：
Juliano,StevenA
中科院分区：
文献类型：
--
作者：
Yee,DonaldA;Juliano,StevenA
1.碎屑质和量的变化对水生无脊椎动物食物网有重要影响。外来碎屑输入是水生树洞微系统中生物的主要能量来源。我们比较了两个主要的碎屑类型的影响，发现在树洞，衰老的树叶（糖枫和白色橡树）和无脊椎动物尸体（死亡的成年果蝇和蟋蟀），对实验室微观世界的几个水质特征，以及质量，生存和人口的优势树洞消费者，Ochlerotatus三列（双翅目：蚊科）的性能。到目前为止，还没有研究记录动物碎屑对树洞微系统或居民消费者的影响。接受无脊椎动物尸体的水生环境的总氮、总活性磷和pH值均显著高于叶基环境。腐烂率的无脊椎动物尸体相比，叶材料。微生物对O2的消耗量随着碎屑量的增加而增加，但我们没有发现碎屑类型之间的差异。3.在动物基处理中，Ochlerotatus triseriatus幼虫生长更快，当使用更多的动物碎屑时，幼虫的平均质量显著更大。基于动物的处理对幼虫的影响转化为成虫的更高性能，其重量是基于植物的容器的三倍。存活率和估计的人口增长率显着大于O。三系动物与植物碎屑饲养。4.我们假设两种机制的无脊椎动物尸体对蚊子的性能相对于与叶碎屑相关的显著影响：（i）无脊椎动物尸体分解更快，更有效地释放营养物质到水生环境中;或（ii）O。三列虫幼虫可直接摄取无脊椎动物尸体的富营养成分。因为即使是相对较小的动物碎屑添加剂也能对O.为了减少三列虫种群的数量，需要进行研究，以探索自然界中树洞中动物碎屑的总体作用。
1. Variation in detritus quality and quantity can have significant effects on aquatic invertebrate food webs. Allochthonous inputs of detritus are the principal energy source for organisms in aquatic tree hole microsystems. We compared the effects of two major detritus types found in tree holes, senescent leaves (Sugar Maple and White Oak) and invertebrate carcasses (dead adult fruit flies and crickets), on several water quality characteristics of laboratory microcosms as well as on mass, survival and population performance of the dominant tree hole consumer,Ochlerotatus triseriatus(Diptera: Culicidae). To date, no study has documented the effects of animal detritus in tree hole microsystems or on resident consumers.2. Aquatic environments receiving invertebrate carcasses had significantly greater total nitrogen, total reactive phosphorus and higher pH, than leaf‐based environments. Decay rate of invertebrate carcasses was greater compared to leaf material. Consumption of O2by micro‐organisms increased with increasing detritus amounts, but we detected no difference between detritus types.3.Ochlerotatus triseriatuslarvae grew faster in animal‐based treatments, and mean mass of larvae was significantly greater when more animal detritus was used. The effect of animal‐based treatments on larvae translated into higher performance for adults, which were three times heavier than counterparts from plant‐based containers. Survivorship and estimated population growth rates were significantly greater forO. triseriatusreared on animal‐based versus plant‐based detritus.4. We hypothesise two mechanisms for the pronounced effect of invertebrate carcasses on mosquito performance relative to that associated with leaf detritus: (i) invertebrate carcasses decompose more quickly and release nutrients more effectively into the aquatic environment; or (ii)O. triseriatuslarvae may directly ingest nutrient‐rich components of invertebrate carcasses. Because even relatively small animal detritus additions can have strong effects onO. triseriatuspopulations, studies need to be conducted to explore the overall role of animal detritus in tree holes in nature.