Ab$tract.--Riparian vegetation is very important in determining the structure and function of stream ecosystems. Most aquatic organisms, both invertebrates and fish, are directly or indirectly dependent on inputs of terrestrial detri tus to the stream for their food. Natural changes in riparian vegetation and the biotic processing of detritus, as well as other factors, determine the kinds and a...

Status of macrophyte diversity of floodplain basin, under Netrokona and Sunamgonj haor basin of Bangladesh was conducted and a total number of 30 species of aquatic weeds were identified from the surveyed area. These macrophytes provide medicinal importance of direct human benefit and shelter to the periphyton and other aquatic insects, and act as a source of feed to the fish. Due to increasing...

Population counts of aquatic insects are a valuable tool for monitoring the water quality of rivers and streams. However, the handling of samples in the lab for species identification is time consuming and requires specially trained experts. An aquatic insect imaging system was designed as part of a system to automate aquatic insect classification and was tested using several species and size c...

Freshwater is a very important complement for the ecosystem. While it contains macroinvertebrates such as insects, prokaryotes bacteria and microinvertebrates zooplankton, biotic factors plants; water, metal ions colloidal particles form abiotic factors. Because of attracting attention in terms number variety, aquatic insects are pivol freshwater. In this context; some differences measurements ...

Water striders, a group of semi-aquatic bugs adapted to life on the water surface, have evolved mid-legs (L2) that are long relative to their hind-legs (L3). This novel appendage ground plan is a derived feature among insects, where L2 function as oars and L3 as rudders. The Hox gene Ultrabithorax (Ubx) is known to increase appendage size in a variety of insects. Using gene expression and RNAi ...

Non-wetting surfaces are imperative to the survival of terrestrial and semi-aquatic insects as they afford resistance to wetting by rain and other liquid surfaces that insects may encounter. Thus, there is an evolutionary pay-off for these insects to adopt hydrophobic technologies, especially on contacting surfaces such as legs and wings. The cranefly is a weak flier, with many species typicall...

Meniscus climbing using a fixed body posture has been well documented for various aquatic and neustonic insects, but is not known from small flying insects that inadvertently become trapped on water surfaces. Here, we show that thrips (order Thysanoptera) can ascend a meniscus by arching their non-wetting bodies to translate head-first and upward along a water surface; if initially oriented bac...

Synopsis The use of artificial light at night (ALAN) is increasing exponentially worldwide and there growing evidence that ALAN contributes to the decline insect populations. One most conspicuous ecological effects strong attraction flying insects. In several studies, sources with short-wavelength emissions have been shown attract highest numbers Furthermore, stages aquatic insects are reported...

Environmental contamination research has been quite interesting in bioindicators recently. The basic objective of bioindicator is to find species that can reliably detect environmental disturbances and demonstrate how those affect other or biodiversity as a whole. Since they frequently come into contact with the harmful substances found soil, water, air, insects are particularly valuable for ev...

BACKGROUND Diversity and distribution of Neotropical aquatic insects is still poorly known, with many species to be recorded and many others to be described, due to the small number of taxonomists and sparse faunistic studies. This knowledge is especially poor in the Caatinga Domain in Northeastern Brazil, even though, this region may have played an important historical role in the spatial evol...