Spatio-temporal variation of predatory hoverflies (Diptera: Syrphidae) and their relationship with aphids in organic horticultural crops in La Plata, Buenos Aires

Population variations of predatory hoverflies in agroecosystems depend mainly on the resources that crops and wild vegetation provides them as well as death caused by natural enemies. We identified I) aphidophagous hoverfly species in lettuce and broccoli crops in Buenos Aires, II) the seasonal vari...

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Autores principales: Díaz Lucas, María Florencia, Passarelli, Lilian Mónica, Maza, Noelia, Aquino, Daniel Alejandro, Greco, Nancy Mabel, Rocca, Margarita
Formato: Articulo
Lenguaje:Inglés
Publicado: 2020
Materias:
Ciencias Naturales
Allograpta exotica
Brócoli
Control Biológico por conservación
Lechuga
Toxomerus duplicatus
Acceso en línea:http://sedici.unlp.edu.ar/handle/10915/160049
Aporte de:
SEDICI (UNLP) de Universidad Nacional de La Plata
id I19-R120-10915-160049
record_format dspace
spelling I19-R120-10915-1600492023-11-10T20:08:16Z http://sedici.unlp.edu.ar/handle/10915/160049 Spatio-temporal variation of predatory hoverflies (Diptera: Syrphidae) and their relationship with aphids in organic horticultural crops in La Plata, Buenos Aires Variación espacio-temporal de sírfidos depredadores (Diptera: Syrphidae) y su asociación con áfidos en cultivos hortícolas orgánicos de La Plata, Buenos Aires Díaz Lucas, María Florencia Passarelli, Lilian Mónica Maza, Noelia Aquino, Daniel Alejandro Greco, Nancy Mabel Rocca, Margarita 2020-12-28 2023-11-10T17:43:10Z en Ciencias Naturales Allograpta exotica Brócoli Control Biológico por conservación Lechuga Toxomerus duplicatus Population variations of predatory hoverflies in agroecosystems depend mainly on the resources that crops and wild vegetation provides them as well as death caused by natural enemies. We identified I) aphidophagous hoverfly species in lettuce and broccoli crops in Buenos Aires, II) the seasonal variations of the immature stages and their larval parasitism, and III) the wild plants, surrounding the crops, visited by adults. Fortnightly, 30 leaves were randomly selected in both crops during 2018-2019 and immature stages of syrphids and aphids per leaf were recorded. Adults were manually collected in patches of the wild plants (during 10 min of direct observations), and plants visited by adults were determined. The hoverflies were Allograpta exotica Wiedemann and Toxomerus duplicatus Wiedemann. Only A. exotica was recorded in crops. The dominant aphids were Myzus persicae (Sulzer) in lettuce and Brevycorine brassicae (L.) in broccoli. Parasitism rates ranged between 8 and 100% and the species were Diplazon laetatorius (Fabricius), in both crops, and Pachyneuron aff. nelsoni only in broccoli. Galinsoga parviflora Cav. and Matricaria chamomilla L. were the wild plants most often visited by hoverflies. This work provides basic information for the control of aphids by hoverflies in the framework of conservation biological control. Las variaciones poblacionales de sírfidos depredadores en los agroecosistemas dependen principalmente de los recursos ofrecidos por los cultivos y la vegetación silvestre, así como de la mortalidad causada por sus enemigos naturales. En este trabajo identificamos I) las especies de sírfidos afidófagos en lechuga y brócoli, II) las variaciones estacionales de los estados inmaduros y el parasitismo larval, y III) las plantas aledañas a los cultivos más visitadas. Se registraron los estados inmaduros de los sírfidos y los áfidos colectando quincenalmente 30 hojas al azar en cada cultivo durante 2018-2019. Los adultos de sírfidos registrados por observación directa durante 10 minutos en parches de vegetación silvestre, fueron colectados manualmente y se determinaron las plantas visitadas. Los sírfidos fueron Allograpta exotica Wiedemann y Toxomerus duplicatus Wiedemann; solamente la primera especie fue registrada en los cultivos. Los áfidos más abundantes fueron Myzus persicae (Sulzer) en lechuga y Brevycorine brassicae (L.) en brócoli. El parasitismo larval varió entre 8 y 100%, registrándose Diplazon laetatorius (Fabricius) en ambos cultivos, y Pachyneuron aff. nelsoni solo en brócoli. Galinsoga parviflora Cav. y Matricaria chamomilla L. fueron las plantas silvestres más visitadas. Estos conocimientos son relevantes para el control biológico de áfidos por sírfidos en el marco del control biológico por conservación. Centro de Estudios Parasitológicos y de Vectores Laboratorio de Estudios de Anatomía Vegetal Evolutiva y Sistemática Museo de La Plata Facultad de Agronomía y Zootecnia, Universidad Nacional de Tucumán Articulo Articulo http://creativecommons.org/licenses/by-nc-sa/4.0/ Creative Commons Attribution-NonCommercial-ShareAlike 4.0 International (CC BY-NC-SA 4.0) application/pdf
institution Universidad Nacional de La Plata
institution_str I-19
repository_str R-120
collection SEDICI (UNLP)
language Inglés
topic Ciencias Naturales
Allograpta exotica
Brócoli
Control Biológico por conservación
Lechuga
Toxomerus duplicatus
spellingShingle Ciencias Naturales
Allograpta exotica
Brócoli
Control Biológico por conservación
Lechuga
Toxomerus duplicatus
Díaz Lucas, María Florencia
Passarelli, Lilian Mónica
Maza, Noelia
Aquino, Daniel Alejandro
Greco, Nancy Mabel
Rocca, Margarita
Spatio-temporal variation of predatory hoverflies (Diptera: Syrphidae) and their relationship with aphids in organic horticultural crops in La Plata, Buenos Aires
topic_facet Ciencias Naturales
Allograpta exotica
Brócoli
Control Biológico por conservación
Lechuga
Toxomerus duplicatus
description Population variations of predatory hoverflies in agroecosystems depend mainly on the resources that crops and wild vegetation provides them as well as death caused by natural enemies. We identified I) aphidophagous hoverfly species in lettuce and broccoli crops in Buenos Aires, II) the seasonal variations of the immature stages and their larval parasitism, and III) the wild plants, surrounding the crops, visited by adults. Fortnightly, 30 leaves were randomly selected in both crops during 2018-2019 and immature stages of syrphids and aphids per leaf were recorded. Adults were manually collected in patches of the wild plants (during 10 min of direct observations), and plants visited by adults were determined. The hoverflies were Allograpta exotica Wiedemann and Toxomerus duplicatus Wiedemann. Only A. exotica was recorded in crops. The dominant aphids were Myzus persicae (Sulzer) in lettuce and Brevycorine brassicae (L.) in broccoli. Parasitism rates ranged between 8 and 100% and the species were Diplazon laetatorius (Fabricius), in both crops, and Pachyneuron aff. nelsoni only in broccoli. Galinsoga parviflora Cav. and Matricaria chamomilla L. were the wild plants most often visited by hoverflies. This work provides basic information for the control of aphids by hoverflies in the framework of conservation biological control.
format Articulo
Articulo
author Díaz Lucas, María Florencia
Passarelli, Lilian Mónica
Maza, Noelia
Aquino, Daniel Alejandro
Greco, Nancy Mabel
Rocca, Margarita
author_facet Díaz Lucas, María Florencia
Passarelli, Lilian Mónica
Maza, Noelia
Aquino, Daniel Alejandro
Greco, Nancy Mabel
Rocca, Margarita
author_sort Díaz Lucas, María Florencia
title Spatio-temporal variation of predatory hoverflies (Diptera: Syrphidae) and their relationship with aphids in organic horticultural crops in La Plata, Buenos Aires
title_short Spatio-temporal variation of predatory hoverflies (Diptera: Syrphidae) and their relationship with aphids in organic horticultural crops in La Plata, Buenos Aires
title_full Spatio-temporal variation of predatory hoverflies (Diptera: Syrphidae) and their relationship with aphids in organic horticultural crops in La Plata, Buenos Aires
title_fullStr Spatio-temporal variation of predatory hoverflies (Diptera: Syrphidae) and their relationship with aphids in organic horticultural crops in La Plata, Buenos Aires
title_full_unstemmed Spatio-temporal variation of predatory hoverflies (Diptera: Syrphidae) and their relationship with aphids in organic horticultural crops in La Plata, Buenos Aires
title_sort spatio-temporal variation of predatory hoverflies (diptera: syrphidae) and their relationship with aphids in organic horticultural crops in la plata, buenos aires
publishDate 2020
url http://sedici.unlp.edu.ar/handle/10915/160049
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