Variations in LC50 of some pesticides due to physico-chemical parameters and impact of sevin on neurosecretory cells of a fresh water snail, Thiara lineate
Journal Title: Journal of Research in Biology - Year 2012, Vol 2, Issue 1
Abstract
Aquatic contamination by pesticides is arising as a result of their extensive use in agriculture and public health programmes. However, indiscriminate use of these pesticides for crop protection causes much damage to the aquatic fauna. The snail an aquatic fauna is economically important which serves as an intermediate host of various trematod parasites, which causes severe diseases to human being as well as domestic animals. The gastropod mollusc, Thiara lineata is a filter feeder at the secondary level of fresh water ecosystem. Hence felt necessary to study alteration in the LC50 and neurosecretion. The acclimatized, healthy, active and approximately same weight and sized mature adult and immature animals, groups of ten snails each were exposed (in Plastic troughs each containing 1 liter of water) to Organochlorine (Endosulfan), Organophosphate (Nuvacron), synthetic pyrethroids (Cymbush) and Carbamate (Sevin). The LC50 values for 24, 48, 72 and 96 hours were calculated. The physico-chemical parameters of water used for holding the animal had temperature between 26-28 0C , pH 7.1 to 7.3, total hardness 140 to 150 ppm and oxygen content of 5.6 to 7 ml/lit. The physico-chemical factors affecting the LC50 like temperature, pH, Salinity and Photoperiodism light and dark hours were studied. During the stress conditions neurosecretions are adversely affected . The snail are exposed to pre determined sub-lethal concentration of sevin(0.913 ppm) for 1,7 and 14 days, simultaneously controls were run. After exposure, It was found that the number of the neurosecretory cells 'A' and 'B' has suddenly discharged neurosecretory material. Neurosecretory material was found to be remaining accumulated in control snails
Authors and Affiliations
Ahirrao KD, Kedkar GD
Keywords
Related Articles
- EP ID EP564461
- DOI -
- Views 67
- Downloads 0
Ferulic acid modulates ultraviolet-B radiation mediated inflammatory signaling in human dermal fibroblasts
Ultraviolet B (UVB 290-320 nm) participate in the development of the cutaneous inflammatory response which includes a cascade of events that involves increased expression of cyclooxygenase-2 (COX-2), release of tumor nec...
Assessing heavy metal contamination of road side soil in urban area
Environmental pollution of heavy metals from automobiles has attained much attention in the recent past. The pollution of soil by heavy metals is a serious environmental issue. Heavy metals are released during different...
An assessment of bioactive compounds and antioxidants in some tropical legumes, seeds, fruits and spices
Objective: The main objective of this research was to assess bioactive compounds, antioxidant potential and mineral concentration of commonly consumed foods as well as underutilized ones for improved health and food secu...
Microbiological control agents for cooling systems in hydroelectric power plants
Many hydroelectric power plants and industries use chemicals to minimize problems caused by clogging and corrosion consequence from accumulated organic material in cooling systems. The chemicals used to avoid these proce...
Characterization of the Tadorna ferruginea (Pallas, 1764) [Ruddy Shelduck] nests at its nesting areas in the Middle Atlas, Morocco
Reproduction of Tadorna ferruginea (Pallas, 1764)[Ruddy Shelduck] was studied in the two lakes of Middle Atlas, Morocco namely Afennourir lake and Sidi Ali lake. This water Duck is unusual to build nests at the cedar for...