Antimutagenic effect of dioscorea pentaphylla on genotoxic effect induced by methyl methanesulfonate in the Drosophila wing spot test.

Objectives: Plants as dietary sources are known to have several chemoprotective agents. Dioscorea pentaphylla is an important medicinal plant, which is often used as edible food. This study was undertaken to evaluate the antigenotoxic potential of D.

Protective effect of caffeine on ethyl methanesulfonate-induced wing primordial cells of Drosophila melanogaster.

Objectives: The antimutagenic effect of caffeine is evaluated against ethyl methanesulfonate (EMS)-induced mutation rate in Drosophila.

Materials And Methods: The mutation rate is evaluated using wing mosaic assay. In transheterozygous larvae, multiple wing hair (mwh 0.

Studies on Oecophylla smaragdina as a bio-control agent against pentatomid bug infesting on Pongamia tree.

Weaver ants, (Oecophylla smaragdina) have been found to predate on pentatomid bug (Cyclopelta siccifolia) infesting Pongamia pinnata tree in mid-western Ghat region of Shimoga district, Karnataka. The present study was undertaken to evaluate the potential of weaver ants, that are abundant on P. pinnata trees, to control the pentatomid bugs.

Bio-efficacy of Dioscorea pentaphylla from Midmid-Western Ghats, India.

Antibacterial and antifungal activity of crude extracts of medicinally important and traditionally used yam plant, Dioscorea pentaphylla, from mid-Western Ghats was evaluated against 27 bacterial and 5 fungal clinical strains collected of the patients from infectious sources. The clinical strains belonging to their respective species showed concentration-dependent susceptibility toward crude petroleum ether extract, chloroform extract and methanol extract at 100 μg/100 μl. The extracts exhibited predominant antibacterial activity against Staphylococcus aureus (ATCC-20852), Pseudomonas aeruginosa (ATCC-29737) and Klebsiella pneumoniae (MTCC-618), respectively, and five clinically isolated pathogenic fungi, Trichophyton rubrum, Microsporum gypseum, Tricophyton tonsurans, Microsporum audouini, and Candida albicans, with antibacterial drug ciprofloxacin and antifungal drug fluconozole (50 μg/100 μl) as standards.

Modulation in the protein metabolism by subacute sodium cyanide intoxication in the freshwater fish, Labeo rohita (Hamilton).

The effects of exposure to one-third and one-fifth sublethal concentrations (0.106 and 0.064 mg/L) of sodium cyanide on protein metabolism on freshwater carp, Labeo rohita, was studied.

Inhibition of ATPase activity in the freshwater fish Labeo rohita (Hamilton) exposed to sodium cyanide.

Present study concerns the effect of sodium cyanide on the Indian major carp, Labeo rohita. Fishes were exposed to lethal (0.32 mg/L) and sublethal (0.

Avifaunal diversity of Anekere wetland, Karkala, Udupi district, Karnataka, India.

The avifaunal diversity and density in Anekere wetland, Karkala, Udupi district, Karnataka, India, was studied for a period of three years. Anekere pond inhabits several local and migratory bird species. Reduction in water retention in this pond in summer, weed infestation, variations in food availability in different seasons and threat of predation on the breeding activity of birds affected the avifauna diversity in the study area.

Dynamics of industrial waste stabilization pond treatment process.

Waste stabilization pond is an artificial ecosystem; its performance is governed by the nature of the biological communities it supports. These are primarily used as secondary effluent treatment plants to polish the effluents. However, they are also used to treat the raw sewage and industrial effluents.

Diversity of phytoplanktons in a waste stabilization pond at Shimoga Town, Karnataka State, India.

To understand the diversity of phytoplanktons in waste stabilization pond effluents the hitherto study is undertaken. Species diversity indices of Shannon-Wiener and Simpson were applied to phytoplanktons. The diversity indices are of mathematical function to explain the abundance of each species.

Phytotoxicity of cadmium on the physiological dynamics of Salvinia natans L. grown in macrophyte ponds.

The objective of this experiment is to study the potential ability of Salvinia natans L. to use in phytoassay for the cadmium toxicity in ecotoxicological studies. It is a simple and cost competitive method.

Biodiversity of algae and protozoa in a natural waste stabilization pond: a field study.

A field study was carried out on the biodiversity of protozoa and algae from a natural waste stabilization pond during November, 1996 to April, 1997. The raw waste and pond samples were analysed for physico-chemical and biological parameters. High dissolved oxygen (DO) coinciding with phytoplankton peak was recorded.

Combined treatment of chemical, pharmaceutical and cosmetic industrial effluents by waste stabilization ponds.

Influent and final effluent was collected from the CMM Ltd., Bethora, Ponda, Goa and were analysed for pH, DO, BOD, enzyme activity and chlorophyll content of the waste stabilization pond for over a period of two years of which the data for one year (pre monsoon, monsoon and post monsoon periods) is given. The study revealed that the DO was maximum during the pre-monsoon months and least during the monsoon.

Indirect enzyme-linked immunosorbent assay (ELISA) for monitoring antibodies in rainbow trout Oncorhynchus mykiss.

An indirect enzyme-linked immunosorbent assay (ELISA) has been described to detect and measure the antibodies in O. mykiss against a lambda bacteriophage antigen (strain c1187 Sam7). Antibodies were first detected six days after the first intraperitoneal injection and by day 21 all fish were positive.