Eur. J. Entomol. 114: 609-613, 2017 | DOI: 10.14411/eje.2017.074

Intraguild predation of Orius niger (Hemiptera: Anthocoridae) on Trichogramma evanescens (Hymenoptera: Trichogrammatidae)

Serkan PEHLİVAN, Alican KURTULUŞ, Tuğcan ALINÇ, Ekrem ATAKAN
Department of Plant Protection, Agricultural Faculty, University of Çukurova, Adana, Turkey; e-mails: spehlivan@cu.edu.tr, akurtulus@cu.edu.tr, alinctugcan@gmail.com, eatakan@mail.cu.edu.tr

Intraguild predation of a generalist predator, Orius niger Wolff (Hemiptera: Anthocoridae) on Trichogramma evanescens Westwood (Hymenoptera: Trichogrammatidae), was determined in choice and no-choice experiments using a factitious host, Ephestia kuehniella Zeller (Lepidoptera: Pyralidae), under laboratory conditions. Choice and no-choice experiments were conducted in order to assess the level of intraguild predation of O. niger on E. kuehniella eggs parasitized by T. evanescens. In no-choice experiments, approximately 50 sterile (1) non-parasitized, (2) 3-day-old parasitized, or (3) 6-day-old parasitized E. kuehniella eggs were offered to 24-h-old females of O. niger in glass tubes. In choice experiments approximately 25 eggs of two of the three groups mentioned above were offered to 24-h-old O. niger females. In both choice and no-choice experiments, O. niger consumed more non-parasitized eggs of E. kuehniella. However, intraguild predation occurred, especially of 3-day-old parasitoids, but very few 6-day-old parasitized eggs were consumed. The preference index was nearly 1 indicating O. niger preferred mainly non-parasitized E. kuehniella eggs. A lower level of intraguild predation is expected under field conditions but needs to be investigated using further experiments.

Keywords: Hemiptera, Anthocoridae, Orius niger, Hymenoptera, Trichogrammatidae, Trichogramma evanescens, intraguild predation, Ephestia kuehniella, biological control

Received: October 3, 2017; Accepted: December 8, 2017; Published online: December 28, 2017Show citation

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PEHLİVAN, S., KURTULUŞ, A., ALINÇ, T., & ATAKAN, E. (2017). Intraguild predation of Orius niger (Hemiptera: Anthocoridae) on Trichogramma evanescens (Hymenoptera: Trichogrammatidae). Eur. J. Entomol.114(1), 2017.000. doi: 10.14411/eje.2017.074.
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