![]() ![]() cannot survive indefinitely in anoxic conditions. Though very tolerant to low oxygen conditions, it seems that Tubifex spp. Other studies have found that Tubifex species were able to survive anaerobic conditions for 48 days and after about 120 days of no oxygen small populations remained (Smith 2001). It was also the second most tolerant to anoxia, surviving an average of 16 days. tubifex was found to be one of the most tolerant species to temperature and salinity. tubifex, to specific pollutants and environmental factors. (1982) studied the tolerance of 12 oligochaete species, including T. ![]() have been seen to exhibit negative aerotaxis, meaning that they actively migrate from areas of high dissolved oxygen to areas of low dissolved oxygen, the opposite reaction of most aquatic organisms (Smith 2001).Ĭhapman et al. They often thrive in water that is 10 to 60 percent saturated with oxygen. are known to inhabit organically polluted waters in addition to sewage settling tanks and trickling filters. In the deep waters of lakes and in streams and rivers that are polluted with sewage, is where they are recorded to have the highest concentrated populations (Smith 2001). ![]() Species of the Family Tubificidae are often dominant in depths greater than one meter in poorly oxygenated water. Aquatic oligochaetes are found mainly in the sediment of lakes and streams. The species Tubifex tubifex belongs to the Phylum Annelia and is classified under the Class Clitellata, Subclass Oligochaeta, Order Tubificida, and Family Tubificidae (= Naididae). tubifex and similar aquatic oligochaetes are being studied and applied as informative water quality indicators. tubifex to specific environmental conditions, why this allows them to be widely used as a water quality indicator, and give examples of how T. This essay will discuss the tolerance of T. In particular, the oligochaete species Tubifex tubifex is used as a water quality indicator because of its ability to tolerate low oxygen conditions, the presence of heavy metals, and other environmental conditions. The Aquatic Oligochaete Tubifex tubifex as a Water Quality IndicatorĪquatic oligochaetes are known for their use as water quality indicators, especially in areas with urban and sewage effluent. ![]()
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