Effects of artificial diets and floral nectar on parasitization performance of Trichogramma brassicae Bezdenko, 1968 (Hymenoptera: Trichogrammatidae)

Abstract

This study was conducted to determine whether various food resources enhanced the longevity and fecundity of the egg parasitoid Trichogramma brassicae Bezdenko, 1968 (Hymenoptera: Trichogrammatidae) under laboratory conditions (25°C, 65% RH, 16L:8D h photoperiod) at Laboratory of Biological Control, Department of Plant Protection, Agriculture Faculty, Namık Kemal University in 2014. Newly hatched female wasps were fed on Ephestia kuehniella Zeller, 1879 (Lepidoptera: Pyralidae) eggs with either honey, grape molasses and royal jelly as a main food, alone or double combination of this main foods or supplemented with resin (derived from plants), acacia nectar, Paulownia nectar, red tulip nectar, yellow asphodel nectar, apple syrup, liquid of E. kuehniella eggs or mashed E. kuehniella larvae. Trichogramma brassicae, females that were fed on honey and acacia nectar (17.47 d), honey + apple syrup (17.20 d), honey (16.93 d) and honey + Paulownia nectar (16.60 d) lived significantly longer than females that fed on other floral nectars and artificial diets. Females were fed on royal jelly + mashed E. kuehniella larvae (1.40 d) had the shortest longevity. Trichogramma brassicae females that were fed on honey (106.8 eggs), honey + acacia nectar (105.4 eggs), Paulownia nectar (103.13 eggs) parasitized significantly more hosts than females that fed on other floral nectars and artificial diets. Females fed on royal jelly were had the lowest parasitizing ability (3.33 eggs). These results showed that providing T. brassicae with honey, honey + acacia nectar, honey + apple syrup resulted in greater longevity and total fecundity than other food resources.

Keywords

• Trichogramma brassicae,Ephestia kuehniella,floral nectar,food,fecundity,longevity

Yapay besin ve bitki nektarının Trichogramma brassicae Bezdenko, 1968 (Hymenoptera: Trichogrammatidae)’nin parazitleme performansına etkileri

Öz

Bu çalışma, çeşitli besin kaynaklarının yumurta parazitoiti Trichogramma brassicae Bezdenko, 1968 (Hymenoptera: Trichogrammatidae)’e etkilerinin araştırılması amacıyla Namık Kemal Üniversitesi, Ziraat Fakültesi, Bitki Koruma Bölümü, Biyolojik Mücadele Laboratuvarı’nda laboratuvar koşullarında (25°C sıcaklık, %65 nem, 16:8 saat (aydınlık: karanlık) aydınlanma periyodu) 2014 yılında yürütülmüştür. Ergin dişi bireyler, değirmen güvesi Ephestia kuehniella Zeller, 1879 (Lepidoptera: Pyralidae) yumurtaları üzerinde ana besin (bal, üzüm pekmezi ve arı sütü) ve ara besin (reçine (bitkilerden salgılanan), akasya nektarı, çin kavağı nektarı, kırmızı lale nektarı, sarızambak nektarı, elma şurubu, E. kuehniella yumurta sıvısı ve ezilmiş E. kuehniella larvası) ve bu ana besinlerin ikili kombinasyonları ile beslenmiştir. Bal + akasya nektarı (17.47 gün), bal + elma şurubu (17.20 gün), bal + çin kavağı nektarı (16.60 gün) ile beslenen bireylerin diğer besin ve nektar ile beslenen bireylere göre daha uzun yaşadığı belirlenmiştir. En kısa ömür ise arı sütü + ezilmiş E. kuehniella larvası (1.40 gün) ile beslenen bireylerde görülmüştür. Çalışma sonucunda toplam parazitlenen yumurta sayısı, bal (106.8 yumurta), bal + akasya nektarı (105.4 yumurta), çin kavağı nektarı (103.13 yumurta) ile beslenen bireylerde ve belirgin olarak diğer besin ile beslenen bireylerin parazitledikleri yumurta sayılarından fazla bulunmuştur. Arı sütü ile beslenen bireylerin parazitledikleri yumurta sayısı (3.33 yumurta) en düşük olarak belirlenmiştir. Bu sonuçlar, T. brassicae'ye bal, bal + akasya nektarı, bal + elma şurubu verilmesinin diğer gıda kaynaklarına göre daha uzun ömür ve toplam doğurganlık sağladığını göstermiştir.

Anahtar Kelimeler

• Trichogramma evanescens,Ephestia kuehniella,bitki nektarı,besin,yumurta verimi,ömür

Kaynakça

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