36 Result(s)
within
I. L. Golovanova
Life Sciences
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Article
On the impact of low concentrations of chlorophos in the period of early ontogenesis on digestive carbohydrases of underyearlings of roach Rutilus rutilus
The remote effects of brief exposure to low doses of chlorophos (1 × 10−6 −1 × 10−2 mg/l) in the period of early ontogenesis of roach Rutilus rutilus have been studied. Diverse changes of the activity of carbohyd...
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Article
Activity of digestive enzymes of three morpho-ecological forms of Altai osman (Oreoleuciscus potanini) from the Nogon-Nur Lake (the Large Lakes’ Depression, Mongolia)
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Article
Effects of heavy metals on the physiological and biochemical status of fishes and aquatic invertebrates
Effects of heavy metals on physiological and biochemical parameters of fishes and water invertebrates have been reviewed. The mechanisms of uptake and detoxication, and the influence of various biotic and abio...
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Article
Effect of ultralow concentrations of N-methyl-N′-nitro-N-nitrosoguanidine upon early development in roach (Rutilis rutilus): Intestine carbohydrase activities and kinetic characteristics of carbohydrate hydrolysis in the intestine of underyearlings
The prolonged effects of short-term action of N-methyl-N′-nitro-N-nitrosoguanidine (MNNG) in low concentrations 3 × 10−7 to 3 × 10−1 mg/l upon roach (Rutilus rutilus) early development have been studied. It was r...
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Article
Hydrolysis of carbohydrates in roach (Rutilus rutilus (L.)) at different levels of mercury accumulation
It has been shown that chronic exposure to dietary mercury results in the intensive accumulation of this metal in roach yearlings. The concentrations of accumulated mercury in their organisms were proportional...
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Article
The influence of temperature on the activities of digestive carbohydrases in Amur sleeper (Perccottus glenii Dyb.) during the winter
The total amylolitic activity and sucrase activity in the Amur sleeper intestine are similar to those in typical and facultative benthophages. The optimal temperature of starch hydrolysis is 50 °C. The sleeper...
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Article
The parameters of reproduction, sizes, and activities of hydrolases in Daphnia magna straus of successive generations affected by Roundup herbicide
The influence of sublethal concentrations of Roundup (25 and 50 mg/l of the active compound glyphosate) was studied in the Daphnia magna Straus of successive generations. The toxic effects were assessed by the pa...
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Article
Separate and joint effects of copper and zinc on the intestine carbohydrase activity in vitro in freshwater teleosts
The separate and joint effect of Cu2+ and Zn2+ of 0.1–25 mg l−1 concentrations on the intestine carbohydrase activity were studied in vitro in 11 freshwater bone fishes. The total amylolytic activity of the fish ...
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Article
Influence of biogenic metals (Cu, Zn) on the activity of carbohydrases in juvenile fish in vitro
It was revealed that intestine and whole-body amylolytic activity (AA) in juvenile fish serving as potential feeding items for piscivores significantly decreases in the presence of Cu and Zn ions within a wide...
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Article
Effects of abiotic factors (temperature, pH, heavy metals) on activities of glycosidases in invertebrate animals
Differences in amylolytical activity have been established in the whole body of some invertebrate animals (larvae of chironomids Chironomus plumosus, pond snail Limnaea stagnalis, orb snail Planorbis corneus, fau...
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Article
Impact of polychlorinated biphenyls on the activity of intestinal proteinases and carbohydrases in juvenile roach Rutilus rutilus (L.)
The chronic effects that polychlorinated biphenyls (PCBs) have on the activities of proteinases and carbohydrates in intestinal mucosa and chyme in juvenile roach Rutilus rutilus (L.) have been studied for the fi...
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Article
Effect of abiotic factors (Temperature, pH, Heavy Metals) on activity of carbohydrases of food objects of ichthyophages
Separate and complex effect of temperature, pH, and heavy metals (copper, zinc) is investigated on activity of carbohydrases in the whole organism of juvenile fish (carp Cyprinus carpio, golden carp Carassius aur...
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Article
The effect of organic toxicants on sensitivity of intestinal glycosidases to Cu and Zn in juvenile roach
The chronic effect (duration of exposure 218 days) of polychlorinated biphenyls (PCBs) and the prolonged effect of the short-term action of chlorophos or of N-methyl-N′-nitro-N-nitrosoguanidine (MNNG) during embr...
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Article
The effect of mercury accumulation on the intestinal glycosidase activity in perch Perca fluviatilis L. from aquatic bodies of European Russia with different pH
The intestinal glycosidase activities and kinetic characteristics of carbohydrate hydrolysis change in different ways with mercury accumulation in the muscles of perch from aquatic bodies of European Russia. A...
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Article
Thermopreference and thermostabilty of the Amur sleeper juveniles Perccottus glenii in autumn
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Article
Effect of a magnetic field and copper upon activity of hydrolytic enzymes in roach (Rutilus rutilus) underyearlings
Remote effects of separate and combined exposure to copper (0.001 mg/L and 0.01 mg/L) and a low-frequency magnetic field during early embryogenesis in roach (Rutilus rutilus) underyearlings were studied. The stud...
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Article
Effects of organic pollutants on fish digestive enzymes: A review
A brief overview of data on the effects of organic pollutants of different chemical natures (organochlorine, organophosphorous and organotin compounds, naphthalene, formalin, nitrosoguanidine, glyphosate, and ...
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Article
Effect of the herbicide Roundup on the activity of Glycosidases of invertebrates and juvenile fish
The effects of in vitro exposure to the herbicide Roundup at concentrations of 0.1–50 μg/L on the activity of maltase and sucrase and the total amylolytic activity in the organism of invertebrates and fish fry...
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Article
Effect of ambient temperature increase on intestinal mucosa amylolytic activity in freshwater fish
The relationship between the level of the intestinal mucosa amylolytic activity (AA) of juvenile goldfish Carassius auratus, carp Cyprinus carpio, roach Rutilus rutilus and perch Perca fluviatilis and the rate of...
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Article
Effect of rate of increase of water temperature on sensitivity of fish digestive glycosidases to action of copper and zinc
There was established an increase of sensitivity of glycosidases of intestinal mucosa of juvenile goldfish Carassius auratus, carp Cyprinus carpio, roach Rutilus rutilus, and common perch Perca fluviatilis to act...
