Results 31 to 40 of about 284 (154)

Intensidades de perdas, ataque de insetos-praga e incidência de inimigos naturais em cultivares de milho em cultivo de safrinha Intensities of losses and of insect pests attack to cultivars on the late maize cultivation

Ciência e Agrotecnologia, 2003
Conduziu-se este trabalho visando a estudar as intensidades de perdas, densidades de insetos-praga e inimigos naturais em 49 cultivares de milho (Zea mays L.) em cultivo de safrinha em Coimbra, MG, Brasil. A produtividade média das cultivares foi de 3438,
Marcelo Coutinho Picanço, Tederson Luiz Galvan, João Carlos Cardoso Galvão, Eny do Carmo Silva, Lessando Moreira Gontijo   +4 more
doaj   +1 more source

Morphological variations and abundance of populations of the leafhopper Dalbulus maidis (DeLong) (Hemiptera: Cicadellidae) from the corn-producing region of Huila, Colombia

Agronomía Colombiana, 2021
Dalbulus maidis is known as the vector of the pathogens causing corn stunt complex disease that decreases crop yields to percentages higher than 90%. In the most affected areas of this disease, there is an increase in the abundance of this insect.
Isda Sánchez-Reinoso, Camilo Ignacio Jaramillo-Barrios, Buenaventura Monje-Andrade, Augusto Ramírez-Godoy, Angela María Vargas Berdugo   +4 more
doaj   +1 more source

Flutuação populacional da cigarrinha-do-milho em duas localidades do Mato Grosso do Sul Population fluctuation of leafhopper of corn in two localities of Mato Grosso do Sul State

Ciência Rural, 2008
A cigarrinha-do-milho, Dalbulus maidis (DeLong & Wolcott, 1923) (Hemiptera: Cicadellidae), é considerada uma das pragas mais importantes da cultura por causar danos devido à sucção de seiva e pela transmissão de patógenos às plantas.
Crébio José Ávila, Carla Cristina Marques Arce   +1 more
doaj   +1 more source

First report of Maize striate mosaic virus, a mastrevirus infecting Zea mays in Argentina

, 2023
New Disease Reports, Volume 47, Issue 2, April–June 2023.
A. Ruiz Posse, F. Fernandez, P. Reyna, C. Nome, A. K. Torrico, M. P. Gimenez Pecci, P. Rodriguez Pardina   +6 more
wiley   +1 more source

Volatiles mediate host-selection in the corn hoppers Dalbulus maidis (Hemiptera: Cicadellidae) and Peregrinus maidis (Hemiptera: Delphacidae) [PDF]

Bulletin of Entomological Research, 2019
AbstractVolatile organic compounds (VOCs) released by plants are generally involved in host recognition and host selection for many phytophagous insects. However, for leafhoppers and planthoppers, host recognition is mainly thought to involve a phototactic response, but it is not clear if a host plant could be selected based on the volatile cues it ...
M.V. Coll Aráoz, V.G. Jacobi, P.C. Fernandez, E. Luft Albarracin, E.G. Virla, J.G. Hill, C.A.N. Catalán   +6 more
openaire   +6 more sources

Re-description of the sperm morphology of Dalbulus maidis (Hemiptera: Cicadellidae: Deltocephalinae)

Tissue and Cell, 2018
The corn leafhopper, Dalbulus maidis, which is one of the most important vectors of maize diseases, had the morphology of its spermatozoa described more than 40 years ago. However, the description is imprecise, requiring certain rectifications. Hence, we re-describe the sperm morphology of this species using light microscopy and transmission electron ...
Marcelo, Silva Barcellos, Glenda, Dias, José, Lino-Neto   +2 more
openaire   +3 more sources

Egg Parasitoids of the LeafhoppersDalbulus maidisandDalbulus elimatus(Hemiptera: Cicadellidae) in Two Maize Habitats

Florida Entomologist, 2014
Maize plants with similar numbers of Dalbulus maidis (DeLong & Wolcott) and Dalbulus elimatus (Ball) (Hemiptera: Cicadellidae) eggs were exposed to egg parasitoids in seasonal and perennial maize habitats. Both leafhopper species were parasitized by Paracentrobia tapajosae Viggiani (Hymenoptera: Trichogrammatidae), Anagrus breviphragma Soyka ...
Moya Raygoza, Gustavo, Renteria, Isabel, Luft Albarracin, Erica Beatriz, Virla, Eduardo Gabriel   +3 more
openaire   +2 more sources

Seasonal and Vertical Distribution ofDalbulus maidis(Hemiptera: Cicadellidae) in Brazilian Corn Fields [PDF]

Florida Entomologist, 2016
Abstract The corn leafhopper, Dalbulus maidis (DeLong & Wolcott) (Hemiptera: Cicadellidae), is one of the most important pests of corn, Zea mays L. (Poaceae), in Latin America. We assessed the seasonal and vertical distribution of D. maidis in corn fields in Brazil, in addition to describing the effect of 2 types of yellow traps positioned at 2 heights
Meneses, Aurélio R., Querino, Ranyse B., Oliveira, Charles M., Maia, Aline H. N., Silva, Paulo R. R.   +4 more
openaire   +1 more source

Behavioral constraints on local adaptation and counter‐gradient variation: Implications for climate change

Ecology and Evolution, Volume 10, Issue 13, Page 6688-6701, July 2020., 2020
Our study provides unique insight into how behavior is modified to avoid costly reproductive attempts. Our results suggest a temperature tolerance constraint that shapes reproductive behavior and distribution. This suite of reproductive traits does not appear to coevolve with the latitudinal gradient in a coordinated fashion.
Brandon M. Quinby, Mark C. Belk, J. Curtis Creighton   +2 more
wiley   +1 more source

Phylo‐biogeographical distribution of whitefly Bemisia tabaci (Insecta: Aleyrodidae) mitotypes in Ecuador

Ecosphere, Volume 11, Issue 6, June 2020., 2020
Abstract The Bemisia tabaci complex in Ecuador was studied with respect to phylogenetic relationships and eco‐geographical distribution. Whitefly samples were collected from natural and agricultural environments in nine provinces of Ecuador (latitude, 2° N–5° S; longitude, 78°–81° W).
Jorge R. Paredes‐Montero, María A. Ibarra, Myriam Arias‐Zambrano, Esther L. Peralta, Judith K. Brown   +4 more
wiley   +1 more source