IMBIV   05474
INSTITUTO MULTIDISCIPLINARIO DE BIOLOGIA VEGETAL
Unidad Ejecutora - UE
artículos
Título:
First record of the spatio-temporal variation of Plutella xylostella (Lepidoptera: Plutellidae) and its parasitoids complex in the horticultural area of Córdoba city in central Argentina
Autor/es:
ESPINOZA-GAVILANEZ, ROSITA; GRILLI, MARIANO P.
Revista:
BIOLOGICAL CONTROL
Editorial:
ACADEMIC PRESS INC ELSEVIER SCIENCE
Referencias:
Lugar: Amsterdam; Año: 2019 vol. 133 p. 1 - 8
ISSN:
1049-9644
Resumen:
The diamondback moth, Plutella xylostella (L.) (Plutellidae: Yponomeutoidea) is the most destructive pest inBrassicaceae crops worldwide. This paper describes the status of P. xylostella and its natural enemies in a widearea around Córdoba city in the central region of Argentina. Samples were collected from fifteen horticulturalplots near Córdoba City. In each plot, larvae and pupae were obtained from 10 cabbage plants during the springof 2016 and 2017. Immature specimens were kept until an adult DBM or a parasitoid emerged. Maximum densityof immature individuals per plant occurred at di ff erent moments in each sampling site, indicating local effectsand dynamics of the pest. Higher densities of immature P. xylostella were observed in sites in the north-easthorticultural zone of Córdoba city, where most of the farms are located. The percentage of total parasitism alsovaried between sites and between years but, in general, higher percentages of parasitism were observed at theend of the sampling season. Five parasitoid species were identi fied: Siphona sp. (Diptera: Tachinidae), Diadegmaleontiniae (Hymenoptera: Ichneumonidae), Apanteles piceotrichosus (Hymenoptera: Braconidae) , Oomyzus soko-lowskii (Hymenoptera: Eulophidae) and the hyperparasitoid Conura pseudofulvovariegata (Hymenoptera:Chalcididae). Parasitoids behaved in a similar way to P. xylostella . Densities and dynamics were particular toeach sampling site. Implications for management are discussed.