The evaluation of effectiveness of preparations based on <i>Steinernema carpocapsae</i> (Nematoda: Rhabditida) against the greater wax moth (<i>Galleria mellonella</i> L.) and the yellow mealworm beetle (<i>Tenebrio molitor</i> L.)

Abstract

At present, the issue of studying the effect of nematodes on insects has become one of the key issues, as biopreparations are a promising alternative to other chemical insecticides and expand the range of proposed means of protection. The use of biopreparations based on entomopathogenic nematodes is optimal because they do not have a negative impact on humans and the environment. In the course of the work we have identified the necessary concentration of biopreparation based on Steinernema carpocapsae, for an effective effect on the large wax moth and big flour borer. The study showed that the nematodes of St. carpocapsae species quickly penetrate and multiply in the body of the large wax moth. In the first day the biological effectiveness of the prepared suspension was 46,5% at a concentration of 1950 specimens/ml and 87% at a concentration of 3450 specimens/ml; while on the large wax moth the prepared suspension had a much slower effect. On the first day, the biological efficacy was only 24% at the two concentrations. Comparing the yield of nematodes, we found that for Galleria mellonella the concentration of 1950 specimens/ml was preferable, for Tenebrio molitor 3450 specimens/ml.