Session: OS-D4
THE EFFECT OF ANTROPOGENIC ACTIVITES ON WATER AND ORGANISMS THEREIN I: Water quality, fishes, invertebrates

Aquatic organisms are exposed to a variety of anthropogenically generated toxicants such as metals, DDT and organic substances such as soap sods released into fresh water systems, of which, those receiving high volumes of industrial, urban and sewage effluents are especially at risk. Structural and functional alterations occur in organisms with higher frequencies when exposed to sub lethal levels for an extended time. Organisms are affected... [ view more ]

Aquatic organisms are exposed to a variety of anthropogenically generated toxicants such as metals, DDT and organic substances such as soap sods released into fresh water systems, of which, those receiving high volumes of industrial, urban and sewage effluents are especially at risk. Structural and functional alterations occur in organisms with higher frequencies when exposed to sub lethal levels for an extended time. Organisms are affected on the population, organismic, organ or cellular level and these adaptations are the topic of study in many parts of the world. Absorption of substances into the tissue of aquatic biota (via food or the gills) results in enhanced exposition in the next trophic level, including higher exposition to humans feeding on these biota. It is proposed to discuss findings in various water bodies and in a variety of biota recording these trends and report on changes to the structural composition of organs and the possible effect on those consuming the fishes.composition of organs, the parasite loads and the possible effect on those consuming the fishes. [ view less ]