Effect of Aphis gossypii Glover, Brevicoryne brassicae (L.), and Megoura viciae Buckton (Hemiptera: Aphidoidea) on the development of the predator Harmonia axyridis (Pallas) (Coleoptera: Coccinellidae)

dc.contributor.author	Tsaganou, FC	en
dc.contributor.author	Hodgson, CJ	en
dc.contributor.author	Athanassiou, CG	en
dc.contributor.author	Kavallieratos, NG	en
dc.contributor.author	Tomanovic, Z	en
dc.date.accessioned	2014-06-06T06:45:57Z
dc.date.available	2014-06-06T06:45:57Z
dc.date.issued	2004	en
dc.identifier.issn	10499644	en
dc.identifier.uri	http://dx.doi.org/10.1016/j.biocontrol.2004.04.017	en
dc.identifier.uri	http://62.217.125.90/xmlui/handle/123456789/2730
dc.subject	Aphidoidea	en
dc.subject	Aphis gossypii	en
dc.subject	Brevicoryne brassicae	en
dc.subject	Coccinellidae	en
dc.subject	Food consumption	en
dc.subject	Harmonia axyridis	en
dc.subject	Hemiptera	en
dc.subject	Megoura viciae	en
dc.subject	Toxicity	en
dc.subject.other	Aphididae	en
dc.subject.other	Aphidoidea	en
dc.subject.other	Aphis	en
dc.subject.other	Aphis gossypii	en
dc.subject.other	Brevicoryne brassicae	en
dc.subject.other	Coccinellidae	en
dc.subject.other	Coleoptera	en
dc.subject.other	Harmonia axyridis	en
dc.subject.other	Hemiptera	en
dc.subject.other	Megoura viciae	en
dc.title	Effect of Aphis gossypii Glover, Brevicoryne brassicae (L.), and Megoura viciae Buckton (Hemiptera: Aphidoidea) on the development of the predator Harmonia axyridis (Pallas) (Coleoptera: Coccinellidae)	en
heal.type	journalArticle	en
heal.identifier.primary	10.1016/j.biocontrol.2004.04.017	en
heal.publicationDate	2004	en
heal.abstract	Laboratory experiments were carried out to evaluate the influence of the aphids Aphis gossypii Glover, Brevicoryne brassicae (L.), and Megoura viciae Buckton on the development of the coccinellid Harmonia axyridis (Pallas). Adult H. axyridis consumed significantly more individuals of the smallest aphid, A. gossypii, than the two larger species, and females consumed twice as many of all three prey species as males. On the other hand, when aphid size (relative weights) was taken into account, it is likely that a greater weight of M. viciae was consumed. H. axyridis did not complete its development when fed exclusively on either B. brassicae or M. viciae, but when fed on A. gossypii, reproduction started about 8 days after emergence from the pupal stage. The 1st-instar larval stage was also shortest when fed on A. gossypii (1.8 days), but took 3.5 days and 4.7 days when fed on M. viciae and B. brassicae, respectively. In addition, larvae fed on A. gossypii were larger and heavier than those fed on the other two aphid species. When larvae were fed exclusively on M. viciae, all but one failed to reach the 3rd instar. However, when fed on A. gossypii during the 1st instar and then on M. viciae in subsequent instars, larval H. axyridis completed their development. It was concluded that M. viciae was either toxic to the 1st-instar larvae of H. axyridis or was an unsuitable host for their development. © 2004 Elsevier Inc. All rights reserved.	en
heal.journalName	Biological Control	en
dc.identifier.issue	2	en
dc.identifier.volume	31	en
dc.identifier.doi	10.1016/j.biocontrol.2004.04.017	en
dc.identifier.spage	138	en
dc.identifier.epage	144	en