Results 91 to 100 of about 703 (185)

Length of prematurity period in wheat cultivars determines maximum cereal aphid abundance

Plant Protection Science, 2016
Maximum aphid numbers on wheat are positively related to the length of the period elapsed from immigration to the population peak. We predicted that maximum abundances on late maturing cultivars would be greater than on early ones.
Martina Trávníčková, Kateřina Pánková, Zdenka Martinková, Alois Honěk   +3 more
doaj   +1 more source

Mean temperature of dropping behaviour (°C) ± 95% confidence intervals for non-parasitized adults and adults parasitized by Aphidius avenae of the aphids Sitobion avenae and Metopolophium dirhodum acclimated at 20°C.

, 2016
These aphids represent the same test individuals as indicated by the dark grey bar in Fig 1. (Notations are as follows: Sa = Sitobion avenae, Md = Metopolophium dirhodum, P = aphids parasitized by Aphidius avenae, NP = non-parasitized aphids) (Sa-NP n ...
Thomas Franco (3600332), Jean-Sébastien Pierre (162427), Joan van Baaren (129990), Annabelle Androdias (3600329), Lucy Alford (671995), Françoise Burel (671998)   +5 more
core   +1 more source

The Process of Aphid Egg-Laying and the Little Known Role of the Coccinellidae in Aphid Egg Destruction in Poland – Preliminary Results

Journal of Plant Protection Research, 2014
No detailed studies have been conducted in Poland with regard to aphid eggs or egg survival in particular. So far, no studies have been conducted concerning the role of ladybird beetles in reducing the number of aphid eggs in spring, before the ...
Lubiarz Magdalena, Cichocka Elżbieta
doaj   +1 more source

Natural biological control of aphids (Hemiptera: Aphididae) in a wheat field by parasitoids (Hymenoptera, Aphidiinae) in Medianeira, PR, Brazil/
Controle biológico natural de pulgões (Hemiptera: Aphididae) em lavoura de trigo por parasitóides (Hymenoptera, Aphidiinae), no município de Medianeira, PR, Brasil

Semina: Ciências Agrárias, 2005
Aphids constitute one of the main phytosanitary problems in wheat crops in southern Brazil, and are the target of a biological control program with parasitoids implemented in Brazil since the 1970’s.
Ayres de O. Menezes Junior, Maria F. Dalmolin, Agostinho Zanini, Tânia M.V. Prestes, Luis Francisco Angeli Alves   +4 more
doaj   +1 more source

Pulgões do trigo e ação de parasitóides em Augusto Pestana, nordeste do estado do Rio Grande do Sul, Brasil

Revista Brasileira de Agroecologia, 2013
A compreensão das relações ecológicas é fundamental para o estabelecimento de estratégias de manejo de pulgões em agroecossistemas. O objetivo deste trabalho foi avaliar a ocorrência de pulgões associados à cultura do trigo e o nível de parasitismo ...
Claudio Cesar de Lima Machado, Regis Sivori Silva dos Santos   +1 more
doaj  

Release of Aphidius rhopalosiphi (Hymenoptera: Aphidiinae) for cereal aphid control: field cage experiments

European Journal of Entomology, 2000
The potential of the parasitoid Aphidius rhopalosiphi for controlling cereal aphids was tested in 16 m2 field cage experiments in 1998 and 1999. In the first year, aphids and parasitoids were released in cages containing naturally occurring populations ...
Amandine LEVIE, Pierre DOGOT, Thierry HANCE   +2 more
doaj   +1 more source

Rapid Responses of Winter Aphid-Parasitoid Communities to Climate Warming

Frontiers in Ecology and Evolution, 2018
Consequences of inter-annual environmental fluctuations, including those associated with climate change, can have a knock-on effect from individual to community scale.
Kévin Tougeron, Kévin Tougeron, Maxime Damien, Maxime Damien, Cécile Le Lann, Jacques Brodeur, Joan van Baaren   +6 more
doaj   +1 more source

Plant oxidative status under ozone pollution as predictor for aphid population growth: The case of Metopolophium dirhodum (Hemiptera: Aphididae) in Triticum aestivum (Poales: Poaceae) [PDF]

, 2018
Ozone is a secondary air pollutant that affects plants and animals through several physiological mechanisms that involve changes in redox status. However, the consequences of ozone pollution on aphids are not well understood.
Martinez-Ghersa, Maria Alejandra, Ghersa, Claudio Marco, Telesnicki, Marta Cecilia   +2 more
core   +1 more source

REPORTE DOCUMENTADO DE Metopolophium dirhodum EN TRIGO EN EN YURIRIA, GUANAJUATO

Revista Ciencia e Innovación Agroalimentaria de la Universidad de Guanajuato
Durante el ciclo otoño-invierno 2024-2025 se realizó un estudio en una parcela de trigo en Yuriria, Guanajuato, con el objetivo de identificar insectos fitófagos bajo condiciones reales de cultivo sin uso de insecticidas. Se aplicó un muestreo sistemático tipo “cinco de oros” en siete fechas, recolectando pulgones para su identificación en laboratorio.
A. M. Tafoya-Said, J. Vargas- Durán, M.P. Witrago-Cruz, M.D. Salas-Araiza   +3 more
openaire   +1 more source