scholarly journals Nontarget species selection for host range testing of Cotesia urabae

2009 ◽  
Vol 62 ◽  
pp. 168-173 ◽  
Author(s):  
L.A. Berndt ◽  
T.M. Withers ◽  
S. Mansfield ◽  
R.J.B. Hoare

Classical biological control is being attempted for Uraba lugens (Lepidoptera Noctuidae Nolinae) an Australian eucalypt pest established in New Zealand The Australian solitary larval endoparasitoid Cotesia urabae (Hymenoptera Braconidae) is the most promising agent under investigation A nontarget species list was compiled for host range testing The endemic species Celama parvitis is the sole New Zealand representative of the Nolinae and was highest priority The next most closely related subfamily is the Arctiinae of which New Zealand has four endemic species (Metacrias huttoni M erichrysa M strategica and Nyctemera annulata) and one introduced biological control agent (Tyria jacobaeae) The merits of including other more distantly related members of the Noctuidae and unrelated Lepidoptera filling a similar niche are discussed

2015 ◽  
Vol 68 ◽  
pp. 179-186 ◽  
Author(s):  
T.M. Withers ◽  
G.R. Allen ◽  
C.A.M. Reid

Classical biological control is proposed for Paropsis charybdis (Coleoptera Chrysomelidae Chrysomelinae) a eucalypt pest established in New Zealand The Australian solitary larval endoparasitoid Eadya paropsidis (Hymenoptera Braconidae) is under investigation A potential nontarget species list was compiled for host range testing There are no endemic species of paropsines in the New Zealand fauna only invasive pest beetles The most closely related endemic beetles to the paropsines are Chrysomelinae in the genera Allocharis Aphilon Caccomolpus Chalcolampra and Cyrtonogetus Little is known about these species New Zealand has also introduced 12 beneficial chrysomelid weed biological control agents which include Chrysomelinae and their sister group the Galerucinae One endemic beetle six beneficial beetles and two pest beetles are listed as the highest priority species for host specificity testing


2016 ◽  
Vol 69 ◽  
pp. 327-327
Author(s):  
T.M. Withers ◽  
G.R. Allen ◽  
A.R. Pugh

Classical biological control is being attempted for Paropsis charybdis (Coleoptera Chrysomelidae Chrysomelinae) an Australian eucalypt pest established in New Zealand The Australian solitary larval endoparasitoid Eadya paropsidis (Hymenoptera Braconidae) is under investigation Leaffeeding larvae of closelyrelated chrysomelid nontarget species for host range testing were examined against E paropsidis using various assays Detailed behavioural observations of E paropsidis were undertaken during 1) Nochoice sequential assays of the AB alternating with BA type (where A is the target P charybdis and B is the nontarget species); and 2) Twochoice assays of the AB type 3) In addition groups of nontarget larvae were exposed to E paropsidis under nochoice conditions for 24 hours then reared for survival to ascertain the physiological development of any parasitoid lifestages In all cases survival and development parameters of nontargets species were compared to the target P charybdis


2007 ◽  
Vol 60 ◽  
pp. 286-290 ◽  
Author(s):  
L.A. Berndt ◽  
S. Mansfield ◽  
T.M. Withers

Uraba lugens (gum leaf skeletoniser) is a serious pest of Eucalyptus spp in Australia It is now well established in the greater Auckland region and is spreading Two parasitoid species are under consideration as potential biological control agents of U lugens This paper describes host range testing methods developed using one of these species (Cotesia urabae) against two nontarget species Helicoverpa armigera and Spodoptera litura Using sequential nochoice tests to test the response of mated C urabae females clear preferences were observed for U lugens over both nontarget test species Some females did attempt to attack the nontarget species but no evidence of parasitism was observed when nontarget hosts were reared or dissected This method elucidated both behavioural responses and physiological development of C urabae and it is proposed to be a suitable host range testing method for full evaluation of this species


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