Ensuring the Safety of Classical Biological Control for Cabbage Seedpod Weevil in Canada: Assessment of the Ecological Host Range of Candidate Ectoparasitoids in Europe and Clarification of their Taxonomic Status

Muller, Franck

dc.contributor.advisor	Vidal, Stefan Prof. Dr.	de
dc.contributor.author	Muller, Franck	de
dc.date.accessioned	2007-09-19T14:39:07Z	de
dc.date.accessioned	2013-01-18T10:10:39Z	de
dc.date.available	2013-01-30T23:51:16Z	de
dc.date.issued	2007-09-19	de
dc.identifier.uri	http://hdl.handle.net/11858/00-1735-0000-0006-B00B-0	de
dc.identifier.uri	http://dx.doi.org/10.53846/goediss-1734
dc.format.mimetype	application/pdf	de
dc.language.iso	eng	de
dc.rights.uri	http://webdoc.sub.gwdg.de/diss/copyr_diss.html	de
dc.title	Ensuring the Safety of Classical Biological Control for Cabbage Seedpod Weevil in Canada: Assessment of the Ecological Host Range of Candidate Ectoparasitoids in Europe and Clarification of their Taxonomic Status	de
dc.type	doctoralThesis	de
dc.title.translated	Ensuring the Safety of Classical Biological Control for Cabbage Seedpod Weevil in Canada: Assessment of the Ecological Host Range of Candidate Ectoparasitoids in Europe and Clarification of their Taxonomic Status	de
dc.contributor.referee	Tscharntke, Teja Prof. Dr.	de
dc.date.examination	2006-07-13	de
dc.subject.dnb	570 Biowissenschaften	de
dc.subject.dnb	Biologie	de
dc.description.abstracteng	Classical biological control of insect pests and weeds can lead to potential conflicts, particularly if the insect pest and weed agents are closely related. Such a conflict may occur in biological control of the Cabbage Seedpod Weevil (CSPW), Ceutorhynchus obstrictus (Marsham) [=C. assimilis (Paykull); see Colonnelli (2004)] (Coleoptera: Curculionidae), which belongs to the same subfamily, Ceutorhynchinae, as a number of agents introduced or proposed for introduction against invasive alien weed species in North America. The CSPW is a serious pest of canola and rapeseed in North America. Some of the known European parasitoids such as Trichomalus perfectus Walker and Mesopolobus morys Walker (both Hym.; Pteromalidae) show the greatest potential for incorporation into an IPM programme in North America and are currently being considered for introduction. Prior to importation, several issues have to be assessed, and results are presented here: Taxonomy of the European species of the genus Trichomalus and Mesopolobus associated to Ceutorhynchinae hosts were revised and illustrated keys provided to ensure up to date information is available to biological control practitioners. A three years field survey has been carried out in five European countries to field collect Ceutorhynchinae hosts, rear their ectoparasitoids and identify them. Furthermore, implications of the host-parasitoid associations recovered by the surveys are discussed relative to introduction of species to North America for classical biological control of cabbage seedpod weevil.The host specificity of the candidate ectoparasitoids has to be determined in their native cultivated and non-cultivated habitats. A three year field survey has been carried out to document the European parasitoid assemblages associated with several Ceutorhynchinae species either already introduced in North America as classical weed biological control agents (Microplontus edentulus (Schultze) against scentless chamomile, Tripleurospermum perforatum (Mérat) Laínz (=Matricaria perforata Mérat) [Asteraceae]; Hadroplontus litura (Fabricuius) against Canada thistle, Cirsium arvense (L.) Scopoli [Asteraceae]), proposed for introduction (Ceutorhynchus turbatus Schultze against hoary cress, Lepidium draba L. (=Cardaria draba) [Asteraceae]) or of importance in term of conservation (Ceutorhynchus typhae (=C. floralis) (Paykull) on Shepherd s purse, Capsella bursa-pastoris (L.) Medicus [Brassicaceae]). These results are discussed to estimate potential non-target effects on other Ceutorhynchinae species and implications for classical biological control of cabbage seedpod weevil.	de
dc.contributor.coReferee	Schaefer, Matthias Prof. Dr.	de
dc.subject.topic	Agricultural Sciences	de
dc.subject.ger	Biological Control	de
dc.subject.ger	Taxonomy	de
dc.subject.ger	Parasitoid community	de
dc.subject.ger	Chalcidoidea	de
dc.subject.ger	Pteromalidae	de
dc.subject.eng	Biological Control	de
dc.subject.eng	Taxonomy	de
dc.subject.eng	Parasitoid community	de
dc.subject.eng	Chalcidoidea	de
dc.subject.eng	Pteromalidae	de
dc.subject.bk	42.05	de
dc.subject.bk	42.36	de
dc.subject.bk	42.62	de
dc.subject.bk	42.75	de
dc.subject.bk	42.90	de
dc.identifier.urn	urn:nbn:de:gbv:7-webdoc-1579-8	de
dc.identifier.purl	webdoc-1579	de
dc.affiliation.institute	Fakultät für Agrarwissenschaften	de
dc.subject.gokfull	WYP 770: Hymenopteroidea {Zoologie	de
dc.subject.gokfull	Tracheata	de
dc.subject.gokfull	Pterygota}	de
dc.subject.gokfull	WYP 780: Coleopteroidea {Zoologie	de
dc.subject.gokfull	Tracheata	de
dc.subject.gokfull	Pterygota}	de
dc.subject.gokfull	WXR 200: Symbiose	de
dc.subject.gokfull	Kommensalismus	de
dc.subject.gokfull	Parasitismus {Zoologie}	de
dc.subject.gokfull	WXR 300: Populationsökologie und Populationsdynamik {Zoologie}	de
dc.identifier.ppn	659416913	de

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