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Pheromonal and kairomonal attraction...

DeLury, Naomi Catherine.

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Pheromonal and kairomonal attraction of Ascogaster quadridentata Wesmael (Hymenoptera: Braconidae), a parasitoid of Cydia pomonella L. (Lepidoptera: Tortricidae).

Record Type:	Electronic resources : Monograph/item
Title/Author:	Pheromonal and kairomonal attraction of Ascogaster quadridentata Wesmael (Hymenoptera: Braconidae), a parasitoid of Cydia pomonella L. (Lepidoptera: Tortricidae)./
Author:	DeLury, Naomi Catherine.
Published:	Ann Arbor : ProQuest Dissertations & Theses, : 1998,
Description:	95 p.
Notes:	Source: Masters Abstracts International, Volume: 37-06, page: 1766.
Contained By:	Masters Abstracts International37-06.
Subject:	Entomology. -
Online resource:	http://pqdd.sinica.edu.tw/twdaoapp/servlet/advanced?query=MQ37510
ISBN:	9780612375109

Pheromonal and kairomonal attraction of Ascogaster quadridentata Wesmael (Hymenoptera: Braconidae), a parasitoid of Cydia pomonella L. (Lepidoptera: Tortricidae).
DeLury, Naomi Catherine.

Pheromonal and kairomonal attraction of Ascogaster quadridentata Wesmael (Hymenoptera: Braconidae), a parasitoid of Cydia pomonella L. (Lepidoptera: Tortricidae). - Ann Arbor : ProQuest Dissertations & Theses, 1998 - 95 p.

Source: Masters Abstracts International, Volume: 37-06, page: 1766.

Thesis (M.Sc.)--Simon Fraser University (Canada), 1998.

Ascogaster quadridentata Wesmael is an egg-larval endoparasitoid of the codling moth, Cydia pomonella L., a key pest of apples worldwide. Little is known about the chemical ecology of A. quadridentata.

ISBN: 9780612375109Subjects--Topical Terms:

615844
Entomology.

Pheromonal and kairomonal attraction of Ascogaster quadridentata Wesmael (Hymenoptera: Braconidae), a parasitoid of Cydia pomonella L. (Lepidoptera: Tortricidae).
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100 1 $a DeLury, Naomi Catherine. $3 3350481
245 1 0 $a Pheromonal and kairomonal attraction of Ascogaster quadridentata Wesmael (Hymenoptera: Braconidae), a parasitoid of Cydia pomonella L. (Lepidoptera: Tortricidae).
260 1 $a Ann Arbor : $b ProQuest Dissertations & Theses, $c 1998
300 $a 95 p.
500 $a Source: Masters Abstracts International, Volume: 37-06, page: 1766.
500 $a Adviser: G. Gries.
502 $a Thesis (M.Sc.)--Simon Fraser University (Canada), 1998.
520 $a Ascogaster quadridentata Wesmael is an egg-larval endoparasitoid of the codling moth, Cydia pomonella L., a key pest of apples worldwide. Little is known about the chemical ecology of A. quadridentata.
520 $a Porapak Q-collected extracts of female A. quadridentata-produced volatiles bioassayed in Y-tube olfactometers attracted male, but not female, A. quadridentata. Coupled gas chromatographic-electroantennographic detection (GC-EAD) analysis of the bioactive extracts revealed three compounds that elicited responses by male A. quadridentata antennae. GC-mass spectra (MS) indicated and comparative analyses of standards confirmed that these compounds were Z9,Z12-octadecadienal, Z9-hexadecenal and 3,7,11-trimethyl-6E,10-dodecadienal. Z9,Z12-Octadecadienal alone attracted laboratory-reared male A. quadridentata in Y-tube olfactometers and field-cage bioassays, and attracted wild male A. quadridentata in a field experiment. This sex pheromone could be used to help delineate natural distributions of A. quadridentata, investigate why A. quadridentata survives in some areas and not others and determine potential sources of parasitoids for capture and release.
520 $a Host location by A. quadridentata was shown to be mediated by kairomones associated with its C. pomonella host. In Y-tube olfactometer bioassays, female A. quadridentata were attracted to Porapak Q-collected volatile extracts from female C. pomonella scales and eggs, but not to C. pomonella sex pheromone. Only the scales of female C. pomonella were attractive to male A. quadridentata. Antennally-active compounds in scale volatile extracts included heptanal, octanal, nonanal, decanal, undecan-2-one, dodecanal, pentadecan-2-one, Z6-pentadecen-2-one, Z9-hexadecenal, Z6-heptadecen-2-one, and 3,7,11-trimethyl-2E,6E, 10-dodecatrien-1-ol acetate. A synthetic blend of these compounds at quantities and ratios equivalent to Porapak Q scale extract was attractive to female A. quadridentata in a Y-tube olfactometer bioassay. Identification and deployment of the behaviourally active compounds may augment A. quadridentata management in target orchards, increasing immigration while decreasing emigration of the parasitoid.
590 $a School code: 0791.
650 4 $a Entomology. $3 615844
650 4 $a Plant pathology. $3 3174872
690 $a 0353
690 $a 0480
710 2 $a Simon Fraser University (Canada). $3 1020621
773 0 $t Masters Abstracts International $g 37-06.
790 $a 0791
791 $a M.Sc.
792 $a 1998
793 $a English
856 4 0 $u http://pqdd.sinica.edu.tw/twdaoapp/servlet/advanced?query=MQ37510