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Journal of Plant Protection and Pathology
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El Sharkawy,, M. (2007). THE POSSIBILITY OF HOST EGGS STORAGE UNDER LOW TEMPERATURE AND ITS ACCEPTANCE BY Trichogramma evanescens WOSTWOOD (TRICHOGRAMMATIDAE: HYMENOPTERA) AFTER DIFFERENT PERIODS OF STORAGE.. Journal of Plant Protection and Pathology, 32(12), 10425-10435. doi: 10.21608/jppp.2007.221174
Manal A. A. El Sharkawy,. "THE POSSIBILITY OF HOST EGGS STORAGE UNDER LOW TEMPERATURE AND ITS ACCEPTANCE BY Trichogramma evanescens WOSTWOOD (TRICHOGRAMMATIDAE: HYMENOPTERA) AFTER DIFFERENT PERIODS OF STORAGE.". Journal of Plant Protection and Pathology, 32, 12, 2007, 10425-10435. doi: 10.21608/jppp.2007.221174
El Sharkawy,, M. (2007). 'THE POSSIBILITY OF HOST EGGS STORAGE UNDER LOW TEMPERATURE AND ITS ACCEPTANCE BY Trichogramma evanescens WOSTWOOD (TRICHOGRAMMATIDAE: HYMENOPTERA) AFTER DIFFERENT PERIODS OF STORAGE.', Journal of Plant Protection and Pathology, 32(12), pp. 10425-10435. doi: 10.21608/jppp.2007.221174
El Sharkawy,, M. THE POSSIBILITY OF HOST EGGS STORAGE UNDER LOW TEMPERATURE AND ITS ACCEPTANCE BY Trichogramma evanescens WOSTWOOD (TRICHOGRAMMATIDAE: HYMENOPTERA) AFTER DIFFERENT PERIODS OF STORAGE.. Journal of Plant Protection and Pathology, 2007; 32(12): 10425-10435. doi: 10.21608/jppp.2007.221174

THE POSSIBILITY OF HOST EGGS STORAGE UNDER LOW TEMPERATURE AND ITS ACCEPTANCE BY Trichogramma evanescens WOSTWOOD (TRICHOGRAMMATIDAE: HYMENOPTERA) AFTER DIFFERENT PERIODS OF STORAGE.

Article 2, Volume 32, Issue 12, December 2007, Page 10425-10435  XML PDF (586.64 K)
Document Type: Original Article
DOI: 10.21608/jppp.2007.221174
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Author
Manal A. A. El Sharkawy,
Plant Protection Research Institute, ARC, Dokki,, Egypt
Abstract
The possibility of cold storage of  Pink bollworm Pectinophora gossypiella (Saunders) and angoumois grain moth Sitotroga cerealella (Olivier) eggs, which used as hosts for Trichogramma evanescens which reared and investigated under three low temperatures (4±1, 8±1 and 10±1°C), also the effect of storage periods on the parasitoid host acceptance were also studied. It was found that storage time was the major factor influencing the number of parasitized  P.  gossypiella and  S. cerealella  eggs.  The percentage of emergence, and the percentage of sex ratio, both fitness measures were reduced after storage of 15 days or longer. Both host species could be successfully stored for 15 days on 10°C without detrimental effects on parasitoid acceptance. If the condition obligated to  preserve host eggs for longer period it should be stored at 8° C.  Cold storage of P.  gossypiella eggs at 8°C and 10°C for 5days did not affect parasitization. There were significant differences between the two host species in the percentage of parasitoid emergence and in the percentage of  produced females (sex-ratio), where as, there was insignificant difference between the number of parasitized eggs ( parasitoid host acceptance). 
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