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Paper Information

Journal:   IRANIAN JOURNAL OF AGRICULTURAL SCIENCES (JOURNAL OF AGRICULTURE)   2006 , Volume 37 , Number 5; Page(s) 857 To 864.
 
Paper: 

A STUDY OF SOME BIOLOGICAL TRAITS OF TRICHOGRAMMA BRASSICAE BEZD. IN FIVE LABORATORY REARED GENERATIONS ON THE EGGS OF SITOTROGA CEREALELLA OLIVE & PLODIA INTERPUNCTELLA HUB

 
 
Author(s):  HOSSEINI BAI SH.*, YAZDANI KHORASGANI A., MASHHADI JAFARLOU M.
 
* FACULTY OF AGRICULTURE, UNIVERSITY OF TABRIZ
 
Abstract: 

Fecundity, development period, percent emergence, longevity, sex ratio and hind tibia length of Trichogramma brassicae Bezd. (Hym.: Trichogrammatidae) were evaluated in five consecutive rearing generations on the eggs of Sitotroga cerealella Oliv. (Lep.: Gelechiidae) & Plodia interpunctella Hub. (Lep.: Pyralidae) in 24±1oC, 60±5% RH and 14:10(L:D).The means figures for the mentioned characters (for wasps reared on the eggs of S. cerealella and P. interpunctella)were obtainedas fallows:fecundity:34.55 and 21.65 eggs per female, development period: 11.60 and 11.41 days, percent of emergence: 93.52 and 77.01; longevity: 3.04 and 2.44 days, the sex ratio: 64.55 and 60.01 and the hind tibia lenght: 158.08 and 146.45 microns. The means of fecoundity, longevity, sex ratio and hind tibia lenght of wasps reared on either host indicated significant differences, increasing until 3rd generationthen decreasing in the next generations, while the means for development period and percent of emergence exhibited no significant difference in any five rearing generations. Also strong positive correlations among the hind tibia length, fecundity, and longevity of the wasps reared on either host were observed. According to the obtained results non continual rearing of this wasp on one host is suggested in its mass production.

 
Keyword(s): REARING, TRICHOGRAMMA, ANGOUMOIS GRAIN MOTH, INDIAN GRAIN MOTH, BIOLOGICAL TRAITS
 
References: 
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