Open AccessEffect of temperature on flight initiation in Mastrus ridens
Author(s) -
V.A. Davis,
W.R.M. Sandanayaka,
A. Chhagan,
J. G. Charles
Publication year - 2014
Publication title -
proceedings of the new zealand weed and pest control conference/new zealand plant protection/proceedings of the ... national weeds conference/proceedings of the new zealand weed control conference/proceedings of the new zealand plant protection conference
Language(s) - English
Resource type - Journals
eISSN - 0370-2804
pISSN - 0370-0968
DOI - 10.30843/nzpp.2014.67.5767
Subject(s) - tortricidae , ichneumonidae , biology , codling moth , parasitoid , lepidoptera genitalia , diapause , orchard , voltinism , larva , pupa , parasitism , horticulture , braconidae , host (biology) , botany , ecology
Mastrus ridens (Horstmann) (Hymenoptera Ichneumonidae) is a gregarious ectoparasitoid of cocooned larvae of codling moth Cydia pomonella (L) (Lepidoptera Tortricidae) This host stage is available for parasitism by M ridens (which is not known to diapause) throughout winter and early spring A study was conducted at ambient field temperatures during this period to investigate the minimum temperature required for flight initiation by M ridens Ten female and 10 male adults (37 days old) from the laboratory were transferred into two containers and placed in an apple orchard for 1 h for temperatures to equilibrate The container was then opened inside a large net cage and the numbers of parasitoids that flew into the cage at different temperatures were recorded The experiment release periods while establishing the parasitoid throughout New Zealand and (2) determine when the females are first active in spring before the codling moth larvae pupate