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Registros recuperados: 4
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Harmonia axyridis in Chile: a new threat Ciencia e Investigación Agraria
Grez,Audrey; Zaviezo,Tania; González,Guillermo; Rothmann,Sergio.
In this work, we document the presence of Harmonia axyridis in Chile, an invasive coccinellid species that has had negative effects in other regions of the world, such as: impacts on non-target arthropods, invasions of houses and fruit damage. This species has been found in the last three years in the Metropolitan and Valparaíso regions, in crops, pine plantations and inside houses. We warn about the consequences of the introduction of this species to Chile and claim to take actions to avoid its spread in the country.
Tipo: Journal article Palavras-chave: Biological invasions; Coccinellidae; Harmoia axyridis; Harlequin lady beetle; Asian lady beetle.
Ano: 2010 URL: http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0718-16202010000300013
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Influence of different plants substrates on development and reproduction for laboratory rearing of Pseudococcus calceolariae (Maskell) (Hemiptera: Pseudococcidae) Ciencia e Investigación Agraria
Zaviezo,Tania; Cadena,Elizabeth; Flores,M. Fernanda; Bergmann,Jan.
The citrophilus mealybug, Pseudococcus calceolariae, is a polyphagous pest that has a major impact on fruit crops in central Chile, and is of quarantine importance for many markets. To study many control alternatives, it is important to develop efficient rearing protocols. The objective of this work was to determine mealybug development on three different plant substrates: sprouted potatoes, lemon fruits and Butternut squash. Insects were inoculated on the substrates, maintained at 25 °C and in total darkness until completing their development. Every one to 4 days, advancement on the development was checked by counting the exuvia. Mean developmental time for each stage, adult longevity, fecundity and fertility were determined. Preimaginal developmental...
Tipo: Journal article Palavras-chave: Developmental time; Mealybug; Rearing substrates.
Ano: 2010 URL: http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0718-16202010000300002
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Migration of coccinellids to alfalfa fields with varying adjacent vegetation in Central Chile Ciencia e Investigación Agraria
Grez,Audrey A; Torres,Constanza; Zaviezo,Tania; Lavandero,Blas; Ramírez,Marcelo.
Permanent and permeable edges, where natural enemies can feed, overwinter or easily cross over, should enhance the early arrival of these predators to crops. We evaluated the abundance and species richness of coccinellids migrating to alfalfa fields adjacent to Eucalyptus, a mix of false acacia, blackberries and poplar (F-B-P), vineyards, corn and annual vegetables. From September 2007 to May 2008, we captured coccinellids in three sticky traps (2.64 m²) placed at the borders between alfalfa fields and adjacent vegetation. We also estimated the abundance of aphid populations in the alfalfa fields, by counting the number of individuals per alfalfa stem in spring, summer and autumn. We collected 90,396 coccinellids from 14 species. Neither total abundance...
Tipo: Journal article Palavras-chave: Agroecosystems; Conservation biological control; Edge effects; Ladybeetles; Migration; Natural enemies.
Ano: 2010 URL: http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0718-16202010000200011
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Primer registro de Goniozus legneri (Hymenoptera: Bethylidae) para Chile Ciencia e Investigación Agraria
Zaviezo,Tania; Romero,Alda; Castro,David; Wagner,Adrián.
La polilla de la manzana (Cydia pomonella) y del algarrobo (Ectomyelois ceratoniaé) son plagas importantes de manzanos y nogales en Chile. Durante monitoreos de fruta se encontró un betílido atacando larvas de estas especies. Como no existía conocimiento previo de parasitoides de larvas de estas especies en Chile, se realizó un estudio para determinar la especie, estudiar su biología y establecer su dispersión en Chile central. Con este propósito se muestrearon frutos de nogales y manzanos provenientes de árboles con y sin aplicaciones de pesticidas, en distintas localidades ubicadas entre la Región Metropolitana y la VII Región, donde se encontró Goniozus legneri atacando a larvas de polilla de la manzana y polilla del algarrobo. El parasitismo promedio...
Tipo: Journal article Palavras-chave: Manzano; Nogal parasitoide polilla de la manzana polilla del algarrobo.
Ano: 2007 URL: http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0718-16202007000100007
Registros recuperados: 4
Primeira ... 1 ... Última
 

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