Effect of photoperiod experienced by parents on diapause induction in Trichogramma cacoeciae

被引:32
作者
Pizzol, Jeannine [1 ]
Pintureau, Bernard [2 ]
机构
[1] INRA, UR 880, F-06903 Sophia Antipolis, France
[2] Inst Natl Sci Appl, INSA, UMR INRA, F-69621 Villeurbanne, France
关键词
egg parasitoid; cessation of development; storage; temperature; photoperiod; biological control; Hymenoptera; Trichogrammatidae;
D O I
10.1111/j.1570-7458.2008.00671.x
中图分类号
Q96 [昆虫学];
学科分类号
摘要
In the genus Trichogramma, the prepupal stage can survive the cold season in diapause. However, optimal conditions for the induction of this cessation of development during the process of mass production of the parasitoid in a biological control program depend on the species. In Trichogramma cacoeciae Marchal (Hymenoptera: Trichogrammatidae), diapause is induced more easily if the parents are reared under short-day conditions (L10:D14), and if the temperature is 10 degrees C rather than 13 degrees C. However, the effect of parental photoperiod on diapause induction is weaker at lower temperatures (10 degrees C). Following diapause induction, individuals can be stored at 3 degrees C for several months, up to 1 year. Non-optimal conditions led to the establishment of a quiescent state in some or all individuals. In such cases, it was necessary to reduce the storage period to 1 or 2 months only, to prevent high mortality rates and low fecundity.
引用
收藏
页码:72 / 77
页数:6
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