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Cross-habitat usage by crop aphids and their parasitoids in the cropnoncrop interface in an organic vegetable farm.

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Jaureguiberry, Pedro; Buffa, Liliana M. and Delfino, Miguel A. (2010) Cross-habitat usage by crop aphids and their parasitoids in the cropnoncrop interface in an organic vegetable farm. [Uso del hábitat por áfidos y sus parasitoides en la interfase cultivo-vegetación silvestre en una granja orgânica.] Revista Brasileira de Agroecologia, 5 (2), pp. 39-49.

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Online at: http://www.aba-agroecologia.org.br/ojs2/index.php/rbagroecologia/article/view/9791

Summary

Plant-aphid-parasitoid interactions and parasitism rates were assessed in adjacent cultivated and noncultivated habitats in an organic vegetable farm in a chaco serrano woodland, Córdoba, Argentina. Seven aphid species on eight vegetable species were found in the cultivated habitat. Macrosiphum euphorbiae was present on all vegetable species. Four parasitoid species were recorded, of which Diaretiella rapae was the most common. It provided 21.32% of parasitism on Brevicoryne brassicae. In the non-cultivated habitat, 36 plant species hosted 22 aphid species and five parasitoid species. The aphid Myzus persicae was present on 17 plant species of eight different families. Macrosiphoniella artemisiae was the most abundant aphid species, with the associated Aphidius sp. being the most abundant parasitoid. Aphidius polygonaphis provided 10% of parasitism on Uroleucon aeneus. We report several wild plant species as important reservoirs of parasitoids, which are potential controllers of many pest aphid species.

Summary translation

Se estudiaron las interacciones planta-áfido-parasitoide y las tasas de parasitismo em ambientes cultivados y no cultivados adyacentes, en una granja orgánica de hortalizas en el chaco serrano de Córdoba, Argentina. Siete especies de áfidos fueron encontradas en las ocho especies de hortalizas estudiadas en el ambiente cultivado. Macrosiphum euphorbiae estuvo presente en todas las hortalizas. Se registraron cuatro especies de parasitoides, siendo Diaretiella rapae la más frecuente. Produjo 21,32% de parasitismo en Brevicoryne brassicae. En el ambiente no cultivado 36 especies de plantas hospedaron 22 especies de áfidos y cinco especies de parasitoides. El áfido Myzus persicae estuvo presente en 17 especies de plantas de ocho familias diferentes. Macrosiphoniella artemisiae fue el áfido más abundante, al igual que su parasitoide Aphidius sp. Aphidius polygonaphis produjo 10% de parasitismo en Uroleucon aeneus. Reportamos numerosas especies de plantas silvestres como importantes reservorios de parasitoides, los cuales son potenciales controladores de muchas espécies de áfidos plaga.

EPrint Type:Journal paper
Keywords:Biological control, Ecosystem services, Organic vegetable farming, Parasitism, Plant-aphidparasitoid interactions, Agro-ecology. Control biologico, Cultivo organico de hortalizas, Interacciones planta-áfidoparasitoide, Servicios ambientales, Agroecología.
Agrovoc keywords:
LanguageValueURI
Englishagroecologyhttp://aims.fao.org/aos/agrovoc/c_92381
EnglishBiological controlhttp://aims.fao.org/aos/agrovoc/c_918
Englishecosystem serviceshttp://aims.fao.org/aos/agrovoc/c_1348040570280
EnglishParasitismhttp://aims.fao.org/aos/agrovoc/c_5577
EnglishAphidoideahttp://aims.fao.org/aos/agrovoc/c_30757
EnglishCropshttp://aims.fao.org/aos/agrovoc/c_1972
Subjects: Farming Systems
Crop husbandry
Research affiliation: Brazil > Other organizations
ISSN:1980-9735
Related Links:http://www.aba-agroecologia.org.br/ojs2/index.php/rbagroecologia/index
Deposited By: Pinto, Gabriela Franco
ID Code:24531
Deposited On:06 Feb 2014 15:23
Last Modified:06 Feb 2014 15:23
Document Language:English
Status:Published
Refereed:Peer-reviewed and accepted

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