Konukçu türünün soliter endoparazitoitin (Venturia canescens Grav.) bazı biyolojik özelliklerine etkileri

Yıl 2018, Cilt: 33 Sayı: 3, 209 - 215, 18.10.2018

Ali Boz Adem Gülel Nevran Eylem Akman Gündüz

https://doi.org/10.7161/omuanajas.397962

Öz

Bu
çalışmada, üç konukçu türünün parazitoit Venturia canescens Grav. (Hymenoptera:
Ichneumonidae)’in gelişim süresi, verim ve ergin ömür uzunluğuna etkileri
araştırılmıştır. Cadra cautella (Walker) (Lepidoptera: Pyralidae), Plodia
interpunctella (Hübner) (Lepidoptera: Pyralidae) ve Ephestia kuehniella
(Zeller) (Lepidoptera: Pyralidae), V. canescens için konukçu olarak
kullanılmıştır.

Konukçu
türü parazitoitin ergin öncesi gelişim süresi üzerinde önemli bir etki
yapmıştır. En kısa gelişim süresi P. interpunctella’da, en uzun gelişim süresi
E. kuehniella’da belirlenmiş, C. cautella’da ise gelişim süresi diğer iki
konukçular arasında bir değer olmuştur. V. canescens’in verimi konukçu türü
tarafından etkilenmiştir. Verim C. cautella ve E. kuehniella larvalarında, P.
interpunctella larvaları ile karşılaştırıldığında daha yüksek olmuştur. Bal ile
beslenme tüm konukçu türlerinde parazitoitin verimini artırmıştır.

Ömür
uzunluğu denemeleri için, ergin parazitoitlere hayatları süresince ya bal ve
konukçu birlikte, konukçu olmadan bal veya bal olmadan konukçu verilmiş ya da
ne bal ne de konukçu verilmiştir. Konukçu türü, beslenmeyen ancak yumurta
bırakma olanağı olan ve olmayan dişilerin ömür uzunluğunu önemli ölçüde
etkilememiştir. Buna karşın, konukçu türü beslenen ve yumurta bırakma olanağı
olan ve olmayan dişilerin ömür uzunluğunu önemli ölçüde etkilemiştir. Dişiler
en fazla konukçu bulunmayıp bal ile beslendiklerinde yaşamış, diğer konukçu
/beslenme gruplarında daha kısa yaşamışlardır.

Anahtar Kelimeler

Venturia canescens, Endoparazitoid, Konukçu, Gelişim süresi, Ömür uzunluğu, Verim

The effects of host species on some biological characteristics of solitary endoparasitoid (Venturia canescens Grav.)

Öz

In this study, the effects of three host
species on development time, fecundity and adult longevity of parasitoid
Venturia canescens Grav. (Hymenoptera: Ichneumonidae) were investigated. Cadra
cautella (Walker) (Lepidoptera: Pyralidae), Plodia interpunctella (Hübner)
(Lepidoptera: Pyralidae) and Ephestia kuehniella (Zeller) (Lepidoptera:
Pyralidae) were used as hosts for V. canescens.

Host species had a significant effect on
preadult development period of parasitoid. Development time was shortest on P.
interpunctella, intermediate on C. cautella and longest on E. kuehniella. The
fecundity of V. canescens was influenced by host species. It was higher on C.
cautella and E. kuehniella larvae compared 
to P. interpunctella larvae. Feeding with honey increased the fecundity of
parasitoid on all of the host species.

For longevity
experiments, adult parasitoids were provided by either honey and host, honey
and no host, no honey and host, or they were fed on neither honey nor host for
their lifetimes. Host species did not significantly affect the longevity of
unfed females with no oviposition opportunity and unfed females with
oviposition opportunity. However, it significantly affected the longevity of
fed females with no oviposition opportunity and fed females with oviposition
opportunity. Females without host access lived longest when fed on honey and
shorter in the other host access/feeding treatments.

Anahtar Kelimeler

Venturia canescens, Endoparasitoid, Host, Development time, Longevity, Fecundity

Kaynakça

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