tailieunhanh - Competitive abilities of the entomopathogenic Nematodes steinernema feltiae and Heterorhabditis bacteriophora in the same host at different temperatures
The effectiveness of Turkish strains of the entomopathogenic nematodes Steinernema feltiae and Heterorhabditis bacteriophora on the last instar larvae of Tenebrio molitor were investigated. Mortality rates of T. molitor larvae caused by each nematode species alone (experiment I) were determined. | Turk J Biol 29 (2005) 35-39 © TÜB‹TAK Competitive Abilities of the Entomopathogenic Nematodes Steinernema feltiae and Heterorhabditis bacteriophora in the Same Host at Different Temperatures Hilal AYDIN Department of Plant Protection, Faculty of Agriculture, University of Ankara, D›flkap›, 06110, Ankara - TURKEY Alper SUSURLUK Institute for Phytopathology, Department of Biotechnology and Biological Control, Christian-Albrechts-University Kiel, Klausdorfer St. 28-36, 24223 Raisdorf – GERMANY Received: Abstract: The effectiveness of Turkish strains of the entomopathogenic nematodes Steinernema feltiae and Heterorhabditis bacteriophora on the last instar larvae of Tenebrio molitor were investigated. Mortality rates of T. molitor larvae caused by each nematode species alone (experiment I) were determined. Then, with the same method, the effectiveness of each species over the other in competition was examined (experiment II). Both experiments were conducted in sterilesand at 12, 18 and 25 °C for 5 days. While in experiment I the efficiency of the species was determined to be for H. bacteriophora and 85% for S. feltiae at 12 °C, and at 18 °C for H. bacteriophora and S. feltiae, respectively, and at 25 °C for both species, in experiment II these rates were 3% and 72% at 12 °C; 8% and 85% at 18 °C and and 80% at 25 °C for H. bacteriophora and S. feltiae, respectively. The results indicated that S. feltiae was noticeably dominant over H. bacteriophora when both species were applied together at 3 different temperatures. Key Words: Entomopathogenic nematodes, Steinernema feltiae, Heterorhabditis bacteriophora, competition, temperatures. Steinernema feltiae ve Heterorhabditis bacteriophora Entomopatojen Nematodlar›n›n Farkl› S›cakl›klarda Ayn› Konukçu ‹çerisinde Rekabet Yetenekleri Özet: Entomopatojen nematodlar, Steinernema feltiae ve Heterorhabditis bacteriophora’n›n Türk ›rklar›n›n etkinlikleri Tenebrio molitor’un son dönem .
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