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International Journal of Zoological Research
  Year: 2005 | Volume: 1 | Issue: 1 | Page No.: 70-73
DOI: 10.3923/ijzr.2005.70.73
A New Laboratory Host Record, Ephestia cautella Walker (Lepidoptera: Pyralidae) for an Egg-larval Parasitoid, Chelonus oculator Panzer (Hymenoptera: Braconidae) and a Possible Rearing Method of the Parasitoid on the New Host
Cem Ozkan and Hilal Tunca

Abstract:
Host suitability of Ephestia cautella Walker (Lepidoptera: Pyralidae) was tested for an egg-larval parasitoid, Chelonus oculator Panzer (Hymenoptera: Braconidae) at the laboratory conditions. Eggs of E. cautella were successfully parasitized by C. oculator and fertile offsprings were produced. Chelonus, in the experiment, eclosed from 80% of parasitized hosts. No significant difference was found between development times of male and female parasitoids. Average development of the parasitoid was completed in 43.91 and 44.31 days in males and females. These results showed that E. cautella was a new laboratory host for C. oculator. In addition, some biological characteristics and a possible rearing method of the parasitoid on the laboratory host were studied. All experiments were conducted at 25±1°C, 60-70% relative humidity, with a photoperiod of 16:8 h (L: D). C. oculator was able to parasitize young (0-24 h) and older stage (48-72 h) of E. cautella eggs and completed its development successfully. The reproduction of the parasitoid is arrhenotoky, in which male progeny develop parthenogenetically from unfertilized eggs and female progeny develop from fertilized eggs. The first possible rearing method of C. oculator on the new factitious host, E. cautella showed that the parasitoid was successfully reared in thirty generations. There has still been lack of important knowledge about biology of C. oculator. However, the parasitoid can be a candidate for future research as a biological control agent against some important lepidopteran pests and E. cautella may be a suitable laboratory host for mass rearing of C. oculator, a critical step in any field release program.
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How to cite this article:

Cem Ozkan and Hilal Tunca , 2005. A New Laboratory Host Record, Ephestia cautella Walker (Lepidoptera: Pyralidae) for an Egg-larval Parasitoid, Chelonus oculator Panzer (Hymenoptera: Braconidae) and a Possible Rearing Method of the Parasitoid on the New Host. International Journal of Zoological Research, 1: 70-73.

DOI: 10.3923/ijzr.2005.70.73

URL: https://scialert.net/abstract/?doi=ijzr.2005.70.73

 
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