Results 101 to 110 of about 703 (185)

A propos des captures de pucerons ailés metopolophium dirhodum, rhopalosiphum padi et sitobion avenae (hom. aphidoidea) a León (Espagne)

open access: yes, 2016
P. 347-352Les résultats de captures de pucerons ailés des trois especes les plus importantes pour les cultures de céréales d 'hiver en Europe (Metopolophium dirhodum, Rhopalo­ siphum padi et Sitobion avenae) sont exposis ici.
Nieto Nafría, Juan Manuel   +1 more
core  

Lower lethal temperatures (LT50) ± 95% fiducial limit (°C) of non-parasitized adults and adults parasitized by Aphidius avenae of the aphids Sitobion avenae (indicated by circle symbols) and Metopolophium dirhodum (indicated by triangle symbols) acclimated at 20°C.

open access: yes, 2016
Parasitized individuals are represented by filled symbols. (Notations are as follows: Sa = Sitobion avenae, Md = Metopolophium dirhodum, P = aphids parasitized by Aphidius avenae, NP = non-parasitized aphids) (Sa-NP n = 220; Sa-P n = 237; Md-NP n = 294 ...
Thomas Franco (3600332)   +5 more
core   +1 more source

The relative proportion of behaviours exhibited by non-parasitized adults and adults parasitized by Aphidius avenae of the aphids Sitobion avenae and Metopolophium dirhodum when subjected to a declining temperature regime from 20°C to -10°C at 0.75°C min-1.

open access: yes, 2016
Behaviours include: 1) the aphid actively walked from the wheat (light grey); 2) the aphid dropped from the wheat (dark grey); 3) the aphid remained attached to the wheat to temperatures of -10°C (black).
Thomas Franco (3600332)   +5 more
core   +1 more source

Incidencia de Metopolophium dirhodum Walk. en los factores de rendimiento de Triticum aestivum [PDF]

open access: yes, 1996
p.49-53Como aporte al conocimiento de Metopolophium dirhodum y su relación con los nuevos cultivares, se ha llevado a cabo este ensayo y evaluado su incidencia sobre los factores de rendimiento (espiga por m, espiguillas/espiga, granos/espiga y peso de ...
Rodríguez, Silvia Marta   +3 more
core  

Lethal and sublethal effects of carlina oxide on the aphid Metopolophium dirhodum, and its non-target impact on two biological control agents [PDF]

open access: yes
This study was designed to investigate the acute toxicity (mortality) and sublethal effects (fertility and potential natality) of carlina oxide, the main constituent of Carlina acaulis essential oil (EO), against adults of Metopolophium dirhodum (Walker)
Roman, Pavela   +15 more
core   +1 more source

The Efficacy of Botanical Insecticides Sold in the EU Against Metopolophium dirhodum, and Their Safety for Aphid Predators Aphidoletes aphidimyza and Chrysoperla carnea

open access: yesAgronomy
Botanical insecticides represent environmentally acceptable alternatives to synthetic products, and botanical insecticides represent environmentally acceptable alternatives to synthetic insecticides, which are regulated in the European Union.
Matěj Novák, Roman Pavela
doaj   +1 more source

Analysis of the genetic diversity in Metopolophium dirhodum (Walker) (Hemiptera, Aphididae) by RAPD markers Análise da diversidade genética de Metopolophium dirhodum (Walker) (Hemiptera, Aphididae) por meio de marcadores RAPD

open access: yesRevista Brasileira de Entomologia, 2007
The emergence of host-races within aphids may constitute an obstacle to pest management by means of plant resistance. There are examples of host-races within cereals aphids, but their occurrence in Rose Grain Aphid, Metopolophium dirhodum (Walker, 1849), has not been reported yet.
Marcelo Lopes-da-Silva   +1 more
openaire   +1 more source

Myzus asterophaga Zhang, Chen, Zhong & Li

open access: yes, 2005
Myzus asterophaga Zhang, Chen, Zhong & Li, in Zhang 1999 = Metopolophium dirhodum (Walker 1849) A slide from the IOZ­CAS collection labelled as type material of Myzus asterophaga has an aptera of Myzus persicae and an alata of Metopolophium dirhodum ...
Victor, Blackman, Roger L., Eastop, F.
core   +1 more source

Evaluation of Different Isolates of Entomopathogenic Fungi against Metopolophium dirhodum (Walker) (Homoptera%253A Aphididea) from Constantine, Algeria

open access: yes, 2018
The aim of the present study was to investigate the effect of seven entomopathogenic fungi (Aspergillus californicus, Beauveria bassiana, Fusarium oxysporium, Metharizium flavoride, Cladosporium cladosporioides, Trichoderma viride and Verticillium ...
Ali Kemal Birgücü   +6 more
core   +1 more source

Hybridisation has shaped a recent radiation of grass-feeding aphids. [PDF]

open access: yesBMC Biol, 2023
Mathers TC   +5 more
europepmc   +1 more source

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