[생명공학연구소] 2019학년도 제 4차 세미나 개최

생명공학연구소에서는 다음과 같이 세미나를 개최하고자 하오니

교수님들과 학생 여러분의 많은 참여 부탁드립니다

주제 :: Development of solid mass culture condition of entomopathogenic nematode
               (Steinernema carpocapsae PC) isolated from Korea

연사 :: 유연수 박사(소장)

              (Yeon Su Yu, Research Institute, Daedong Tech Co., Kyeongsan, South Korea)    

일시 :: 2020년 01월 16일 (목) 10:30 - 11:30

장소 :: 생명응용과학대학 제 1실험동 333호

Abstract

We developed cultivation technique using solid culture medium for Steinernema carpocapsae PC, entomopathogenic nematode (EPN) isolated from Korea. The optimized culture medium for the highest harvest yield was the mixture of yeast extract 2.0%, soybean flour 20%, whole milk powder 3%, olive oil 5% and egg yolk 5%. Oil component is best in order of olive oil, corn oil and soybean oil. It was also found that the optimum condition of the carrier (polyurethane) content was about 8-12%, the culture time of symbiotic bacteria was about 48 hours, and the inoculation concentration of nematode was 4,000-5,000 per g medium. The optimal harvest time was confirmed at 12 days of EPN inoculation. Nematode conditions such as mating rate, fecundity, hatching rate, and double cuticle (infective juvenile) rate were confirmed.

주제 ::  Control efficacy of fungus gnat, Bradysia impatiens, enhanced by a combination of
                    entomopathogenic nematodes and predatory mites

연사 :: 이경열 교수

           (College of Agriculture and Life Sciences, Kyungpook National University, Daegu, Korea)      

일시 :: 2020년 01월 16일 (목) 11:30 - 12:30

장소 :: 생명응용과학대학 제 1 실험동 333호

Abstract

Fungus gnat, Bradysia impatiens, is a serious soil pest of seedlings of various crops in the greenhouse and also in mushroom nurseries. Control with chemical pesticides may not be suitable because infestation mostly occurs indoors. Here, we determined the control efficacy of two biological agents: entomopathogenic nematodes (EPNs) and predatory mites, and investigated whether the combined treatments of these two agents improved the control efficacy of B. impatiens. EPNs were more effective in controlling the older larvae of B. impatiens and the effect was higher with Heterorhabditis indica than with Steinernema carpocapsae. Predatory mites were more effective in controlling the younger larvae of B. impatiens and the effect was higher with Stratiolaelaps scimitus than with Androlaelaps casalis. Furthermore, the control efficacy was increased by the combination of EPNs and predatory mites, when compared with the single treatments.

Key words: biological control, entomopathogenic nematodes, natural enemies, predatory mites