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Natural hedges as an element of functional biodiversity in agroecosystems: The case of a Central Italy vineyard

TitoloNatural hedges as an element of functional biodiversity in agroecosystems: The case of a Central Italy vineyard
Tipo di pubblicazioneArticolo su Rivista peer-reviewed
Anno di Pubblicazione2005
AutoriPonti, Luigi, Ricci C., Veronesi F., and Torricelli R.
RivistaBulletin of Insectology
Volume58
Paginazione19 - 23
Data di pubblicazione2005///
Parole chiaveAnagrus, biological control, Hedges, Leafhoppers, Vineyard
Abstract

In a vineyard of Central Italy surrounded by two hedges, one composed of bramble, Rubus ulmifolius Schott, and one of elm, Ulmus minor Miller, the green grape leafhopper, Empoasca vitis (Göthe), and the Italian grape leafhopper, Zygina rhamni Ferrari (Homoptera Cicadellidae), did not reach economically important population levels. Although E. vitis and Z. rhamni were found on bramble, this plant is not a major source of colonising grape leafhoppers. Rather it hosts three non-pest leafhoppers: Ribautiana tenerrima (Herrich-Schäffer), Arboridia parvula (Boheman) (Homoptera Cicadellidae), and a species of the genus Zygina. Mainly R. tenerrima serves as an early season food source to parasitoids of the Anagrus complex (Hymenoptera Mymaridae), the most important natural enemies of grape leafhoppers in Italy. This enabled the parasitoid wasps to build up their populations to later colonise the adjacent vineyard. We documented a clear movement of Anagrus from the bramble hedge to vineyard. Anagrus did not exhibit a spring peak on elm, although this plant contributed to continued survival of parasitoids throughout the season by harbouring several leafhopper species: E. vitis, Z. rhamni, A. parvula, Ribautiana ulmi (L.) and a species of the genus Alebra.

Note

Export Date: 27 January 2011Source: Scopus

URLhttp://www.scopus.com/inward/record.url?eid=2-s2.0-77952065574&partnerID=40&md5=1f66976e15ea0ed873a39f6111120888
Citation Key1043