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Susceptibility of Zabrus sp. (Coleoptera: Carabidae) to Steinernematid and Heterorhabditid Nematodes (Rhabditida: Steinernematidae and Heterorhabditidae)
- 1. Abstract of Applied Sciences and Engineering, 2015, Vol.3 DOI: 10.18488/journal.1001/2015.3/1001.3 3rd International Scientific Conference on Applied Sciences and Engineering 27-28 July, 2015 Lebua Hotels and Resorts, 1055 Silom Road, Bangrak, Bangkok 10500 Thailand Conference Website: www.scihost.org 2 Paper ID: 10/15/3 rd ISCASE Susceptibility of Zabrus sp. (Coleoptera: Carabidae) to Steinernematid and Heterorhabditid Nematodes (Rhabditida: Steinernematidae and Heterorhabditidae) Ramazan Canhilal1 --- Yunus Emre Özdemir2 --- Yunus Emre Taşkesen3 1,2,3 Erciyes University, Faculty of Agriculture, Department of Plant Protection, Kayseri, Türkiye Abstract The efficacy of entomopathogenic nematodes has been studied against the adults of Zabrus sp. (Coleoptera: Carabidae), an important insect pest of wheat in the laboratory first time in the world. The trials have been conducted in small plastic pots with a lid (8 cm in height, 6 cm in diameter) containing autoclaved soil and repeated 2 times. Five nematodes; Steinernema feltiae-Commercial, S. feltiae-Endemic, S. carpocapsae, S. bicornutum, Heterorhabditis bacteriophora, and H. indica were tested on Zabrus larvae in the trials with 3 rates of 50, 100 and 200 infective juveniles (IJs)/cm2 at 25 and 32°C. The mortalities caused by nematodes increased by increasing rate. At 25°C, the highest mortality with 85% at the rate of 100 IJs/cm2 was caused by S. carpocapsae, and S. feltiae-Commercial and H. indica at the rate of 50 IJs/cm2, and H. indica at the rate of 100 IJs/cm2 produced the lowest mortality with 17.5%. At 32°C, S. bicornutum at the rate of 200 IJs/cm2 was the one providing the highest mortality with 80% while S. feltiae-Commercial at the rate of 50 IJs/cm2 was causing 10% mortality which was the lowest. As a result, S. carpocapsae and S. bicornutum showed the best efficacy against Zabrus sp. and it was followed by S. feltiae-Commercial and H. bacteriophora. Keywords: Zabrus spp., Entomopathogenic nematods, Steinernema, Heterorhabditis and biological control *This study is a part of Project No. 111O786 supported by TUBITAK (The Scientific and Technological Research Council of Turkey)