The roles of larval chironomids in the food chain both lotic and lentic ecosystems are very important. On one hand, chironomid larvae feeding on algae, diatoms, rotting organic matter, plant, animal residues also play an important role these systems as a source for other carnivores omnivorous organisms. In this study, gut contents Cryptochironomus defectus (Kieffer, 1913), Cladotanytarsus mancu...

Shallow lentic freshwater aquatic systems are globally important emitters of methane (CH 4 ), a highly potent greenhouse gas. Previous laboratory studies indicated that bioturbation by chironomids can reduce CH production and increase oxidation enhancing oxygen transport into sediment. Thus, reduction in chironomid density application biocides for mosquito control, such as Bacillus thuringinesi...

The Ogba River in southern Nigeria is an important water resource for its riparian communities. This study evaluates impact of anthropogenic influences on the Ogba River using water chemistry and macroinvertebrate data sets obtained over a period of 6 months between January and June 2012. Four stations, stations 1-4, characterised by various human activities were chosen along the river. Organic...

Vibrio cholerae, the causative agent of pandemic cholera, is abundant in marine and freshwater environments. Copepods and chironomids are natural reservoirs of this species. However, the ways V. cholerae is globally disseminated are as yet unknown. Here we review the scientific literature that provides evidence for the possibility that some fish species may be reservoirs and vectors of V. chole...

Effects of gizzard shad Dorosoma cepedianum on benthic communities in a large southern reservoir (Lake Texoma, U.S.A.) were examined during two field enclosure and exclosure experiments in which enclosures were stocked at high and low densities in 1998 and 1999, respectively. In both years, chironomid abundance significantly increased in treatments that excluded large fishes from foraging on se...

Accurate estimation of the variability of heavy metals in river water and the hyporheic zone is crucial for pollution control and environmental management. The biotoxicities and potential ecological risks of heavy metals (Cu, Zn, Pb, Cd) in a solid-liquid two-phase system were estimated using the Geo-accumulation Index, Potential Ecological Risk Assessment and Quality Standard Index methods in ...

Vibrio cholerae is a waterborne bacterium native to the aquatic environment. There are over 200 known serogroups yet only two cause cholera pandemics in humans. Direct contact of human sewage with drinking water, sea-born currents and marine transportation, represent modes of dissemination of the bacteria and thus the disease. The simultaneous cholera outbreaks that occur sometimes in distant l...

Temperature and the oxygen isotopic composition (δ18O) of meteoric water are both important palaeoclimatic variables, but separating their influences on proxies such as δ18O lake carbonates is often problematic. The large temperature variations that known to have occurred in northern mid-latitudes during Late Glacial make this interval an excellent test for a novel approach combines oxygen-isot...

We examined riparian system responses to an extreme rainfall event on 1–4 December 2007, in eleven small watersheds (mean area—13.2 km2) from 2008–2016 at debris flow, high flood, and low flood reaches (all extended overbank flows). Macroinvertebrate followed expected outcomes after disturbance including increasing chironomids other multi-voltine species. A core assemblage of twenty abundant co...