The size of the female and quality assessment of mass-rearedTrichogramma spp. |
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Authors: | J Pavlík |
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Institution: | (1) Institute of Entomology, Czechoslovak Academy of Sciences, Bran?sovská 31, 370 05 Ĉeské Budêjovice, Czechoslovakia |
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Abstract: | The relationship between the index of female's size, hind tibia length (HTL), and selected fitness parameters used in quality
assessment of mass-rearedTrichogramma spp. (Hymenoptera, Trichogrammatidae) was investigated. The studied fitness parameters were: the number of mature eggs present
in the ovaries of females 0–2 hours, as well as 1, 2 and 3 days old, lifetime fecundity, fecundity during a 24 h period, longevity
in the presence and absence of the factitious host (Ephestia kuehniella Zeller) and locomotor activity. The relationship between HTL and fitness parameters was analysed in 7 strains ofTrichogramma spp. (Trichogramma dendrolimi Matsumura,T. evanecens Westwood,T. maidis Pinturea et Voegelé andT. ostriniae Pang et Chen) using linear correlation. No significant relationship was found between HTL and egg complement, fecundity,
longevity and locomotor activity.
The results indicate that HTL used as an index of female's size is not suitable for quality assessment ofTrichogramma reared onE. kuehnieIla. |
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Keywords: | Hymenoptera egg parasites parasitoid quality mass rearing biological control factitious host |
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