Parasitization Performance of Trichogramma Cacoeciae, T. Evanescens and T. Brassicae (Hym. Trichogrammatidae) Reared on the Embryos of Ephestia Kuehniella Zell. (Lep. Pyralidae) Killed by Freezing
Küçük Resim Yok
Tarih
2002
Yazarlar
Dergi Başlığı
Dergi ISSN
Cilt Başlığı
Yayıncı
Erişim Hakkı
info:eu-repo/semantics/closedAccess
Özet
A mass rearing system for Trichogramma spp. using host eggs killed before parasitisation could improve current parasitoid production methods by making the system more efficient. Parasitism rates of Trichogramma cacoeciae Marchall, Trichogramma evanescens Westwood and T. brassicae Bezdenco reared on dead embryos of E. kuehniella kept at -20°C during 1, 2 and 3 h were compared. The lowest parasitization rate was obtained on E. kuehniella eggs which had been kept at -20°C for 3 h. Parasitization rates were 64%, 65.60% and 63. 60% for T. cacoeciae, T. evanescens and T. brassicae, respectively, on E. kuehniella eggs kept at -20°C for 1 h. Subsequent trials focused on fitness of T. cacoeciae, T. evanescens and T. brassicae reared on killed embryos of E. kuehniella. Percentage of parasitized eggs and longevity of females were quantified. Exposure of eggs to low temperatures in a freezer reduced fecundity and longevity of females.
Açıklama
Anahtar Kelimeler
Anagasta Kuehniella; Kuehniella; Pyralidae; Trichogramma; Trichogramma Brassicae; Trichogramma Cacoeciae; Trichogramma Evanescens; Trichogrammatidae
Kaynak
Great Lakes Entomologist
WoS Q Değeri
Scopus Q Değeri
Q3
Cilt
35
Sayı
2
