Abstract
This paper reports the results of live-trapping winged aphids in an Ashby (1976) trap in potato crops in the Netherlands from 1983–1987. During this period, a total of 122 aphid species were trapped. Although only four of those species were able to colonise potato, 26 of them were able to transmit PVYN from potato to potato test plants. The transmission rates and relative efficiency factors (REF's) of those transmitters were determined.
Aphis sambuci, Cryptomyzus galeopsidis, Dysaphis spp.,Hyadaphis foeniculi, Hyalopterus pruni andMyzus cerasi were recorded for the first time as vectors of PVYN in the Netherlands.
The numbers of aphids per species caught per season differed very much, also the virus transmission results of some fluctuated from year to year, e.g.Brachycaudus helichrysi. The REF's in various reports differ greatly, thus the value of a universal REF is doubtful. Assessment of the rate of virus spread in a potato crop is discussed.
Samenvatting
Van de in Nederland voorkomende aardappelvirussen wordt het aardappelvirus YN (PVYN) als het meest schadelijke bij de pootgoedproduktie beschouwd. Dit virus kan op non-persistente wijze door een aantal bladluissoorten worden overgebracht. De groene perzikluis,Myzus persicae wordt geacht dit het meest efficiënt te kunnen doen.
In de periode 1983–1987 is onderzocht welke bladluissoorten, geregistreerd in aardappelpercelen te Wageningen, YN-virus kunnen overbengen. In deze periode werden 122 gevleugelde bladluissoorten met behulp van een Ashby-val levend gevangen en op hun vermogen om YN-virus van aardappel naar aardappel over te brengen getoetst. 26 soorten hiervan zijn potentiële YN-virusoverbrengers. De relatieve efficiëntiewaarden (REF) voor elk van deze soorten werden opnieuw berekend.
De REF-waarde voorBrachycaudus helichrysi werd berekend op 0,21, in afwijking van de waarde (0,01) die Van Harten (1983) aan deze toekende na waarnemingen gedurende slechts één seizoen.
40% van het totaal aantal geregistreerde bladluizen bestond uitCavariella aegopodii, M. persicae, Metopolophium dirhodum, Rhopalosiphum insertum, R. padi enSitobion avenae. Minder talrijk (6,5%) was de groepB. helichrysi, Brachycandus spp. enMacrosiphum euphorbiae. De groepAphis nasturtii, Myzus certus enPhorodon humuli had een aandeel van 3,2% in de totale vangst. BehalveC. aegopodii zijn de genoemde soorten in staat het PVYN over te brengen van aardappel naar aardappel. Van de rest zijn echter ook een aantal soorten in staat PVYN over te brengen maar die zijn slechts in geringe mate gevangen.
A. nasturtii, Brachycaudus spp.,M. certus enM. persicae besmetten vaker dan andere soorten aardappelplantjes met PVYN. Van de soortenAphis sambuci, Cryptomyzus galeopsidis, Dysaphis spp.,Hyadaphis foeniculi, Hyalopterus pruni andMyzus cerasi werd voor de eerste keer in Nederland overdracht van PVY geconstateerd.
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De Bokx, J.A., Piron, P.G.M. Relative efficiency of a number of aphid species in the transmission of potato virus YN in the Netherlands. Netherlands Journal of Plant Pathology 96, 237–246 (1990). https://doi.org/10.1007/BF01974261
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DOI: https://doi.org/10.1007/BF01974261