Introduction and evaluation of Cotesia rubecula, a parasitoid of Pieris rapae in New Zealand
نویسندگان
چکیده
The host specificity of Cotesia rubecula (Marshall) was examined through literature searches, behavioural and ecological observations, and host specificity tests of a South Australian population. The results led to the importation and testing of C. rubecula in quarantine in New Zealand where its specificity to the genus Pieris was confirmed. Introduction of the parasitoid was approved and the species was first released in New Zealand for control of Pieris rapae (L.) in December 1993. It has now overwintered successfully and has parasitised 71–97% of larvae at study sites. Three paired comparisons of sites with and without the parasitoid showed that C. rubecula significantly reduced the survival of P. rapae to 5th instar, and also reduced parasitism by Cotesia glomerata (L.).
منابع مشابه
Herlihy et al.: Distribution of Cotesia rubecula and Displacement of C. glomerata 461 DISTRIBUTION OF COTESIA RUBECULA (HYMENOPTERA: BRACONIDAE) AND ITS DISPLACEMENT OF COTESIA GLOMERATA IN EASTERN NORTH AMERICA
A survey was conducted from May to Oct of 2011 of the parasitoid community of the imported cabbageworm, Pieris rapae (Lepidoptera: Pieridae), in cole crops in part of the eastern United States and southeastern Canada. The findings of our survey indicate that Cotesia rubecula (Hymenoptera: Braconidae) now occurs as far west as North Dakota and has become the dominant parasitoid of P. rapae in th...
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