Helisoma duryi for the biological control of biomphalaria alexandrina under laboratory conditions, II: Competitive interactions: chemical, biochemical and histochemical

ABSTRACT

The present study investigates the influence of H. Duryi on the chemical conditioning of the environment, as well as the possible changes in the biochemical parameters of the soft tissues and the histochemical changes of the digestive gland and the connective tissue of both H. duryi and B. alexandrina. The results indicated that there were some changes in the chemical conditioning of the environment in the form of a significant increase in magnesium, sodium and potassium Ph and significant increase in magnesium, sodium and potassium leading to significant reduction in Ca/Na and Ca/K ratios. The results of the biochemical analysis of the soft tissues of the target snail, B. alexandrina showed a high value of the glucose content and a decreased value of chloride with increasing time periods