Effects of surrounding landscape on parasitism of alfalfa aphids in an IPM crop systém in northern Catalonia

0399240 - BC 2014 RIV NL eng J - Článek v odborném periodiku
Pons, X. - Lumbierres, B. - Comas, J. - Madeira, F. - Starý, Petr
Effects of surrounding landscape on parasitism of alfalfa aphids in an IPM crop systém in northern Catalonia.
Biocontrol. Roč. 58, č. 6 (2013), s. 733-744. ISSN 1386-6141. E-ISSN 1573-8248
Grant ostatní: Universitat de Lleida(ES) CO8026; Universitat de Lleida(ES) CO9036
Institucionální podpora: RVO:60077344
Klíčová slova: Aphididae * Braconidae * Aphidiinae
Kód oboru RIV: EH - Ekologie - společenstva
Impakt faktor: 2.253, rok: 2013

The parasitism of alfalfa aphids was determined during three crop growing seasons. The highest rates of parasitism of Acyrthosiphon pisum and Therioaphis trifolii occurred during the first-second and the fourth alfalfa inttercuts, respectively. The landscape surrounding the fields affected only parasitism rates of Ac.pisum. During the second intercut the forest area had a negative influence on parasitism rates, whereas the bordering surfaces of alfalfa and winter cereals had a positive influence. Correlations between the rates of parasitism and the rate of aphid populations were determined.Regulation of alfalfa aphids cannot be explained solely on the basis of one functional group of natural enemies.
Trvalý link: http://hdl.handle.net/11104/0228163