Among wide spectrum of biomolecules induced by various stress factors low molecular mass protein called metallothionein (MT) is suitable for assessment of the heavy metal environmental pollution. The aim of this work was to determine the metallothionein and total thiols content in larvae of freshwater midges (Chironomus riparius) sampled from laboratory exposure to cadmium(II) ions and from fie...

Chironomus riparius larvae (3rd-4th instar) were extremely resistant to waterborne Cd with 48h LC50s of 331 mg Cd/L in soft water (10 mg/L Ca CO(3)) and 1106 mg Cd/L in moderately hard (140 mg CaCO(3)/L) water. Unexposed larvae had whole body Ca and Na concentrations of 11.2(0.3) and 84.5(3.0) micromol/g, respectively. The larvae exposed through acute toxicity tests accumulated massive amounts ...

Treatment of Chironomus polytene chromosomes with the ultimate carcinogen benzo[a]pyrene diol epoxide I or in vivo administration of the parent hydrocarbon to larvae indicates that the carcinogen interacts with the genome in a nonrandom manner. Visualization of the carcinogen-DNA binding sites by immunofluorescence reveals that, in vivo, some sites are preferentially modified. The combined effe...

Objective: The orange-red spectrum of  the skin of  electric yellow (Labidochromis caeruleus) is  one  of  the  idealistic and  necessary  schemas sought  by  aquarists  and commercial producers. In this study, the effect of live foods meal on the skin coloration of juvenile electric yellow was examined. Methods: 270 fish with an average living body weight was 0.42 ± 0.11 g, and averag...

This study examined whether ecoparasitic larval Unionicola foili exhibited a sex bias when infecting laboratory populations of the host insect Chironomus tentans and whether an association with male or female midges increased the likelihood of larval mites returning to the aquatic habitat. When laboratory populations of C. tentans were exposed to larval U. foili, there was a higher prevalence o...

The orange-red spectrum of  the skin of  electric yellow (Labidochromis caeruleus) is  one  of  the  idealistic and  necessary  schemas sought  by  aquarists  and commercial producers. In this study, the effect of live foods meal on the skin coloration of juvenile electric yellow was examined. 270 fish with an average living body weight was 0.42 ± 0.11 g, and average total length was 3...