Results 21 to 30 of about 1,737 (171)

Transcriptome analysis in cotton boll weevil (Anthonomus grandis) and RNA interference in insect pests. [PDF]

PLoS ONE, 2013
Cotton plants are subjected to the attack of several insect pests. In Brazil, the cotton boll weevil, Anthonomus grandis, is the most important cotton pest.
Alexandre Augusto Pereira Firmino, Fernando Campos de Assis Fonseca, Leonardo Lima Pepino de Macedo, Roberta Ramos Coelho, José Dijair Antonino de Souza, Roberto Coiti Togawa, Orzenil Bonfim Silva-Junior, Georgios Joannis Pappas, Maria Cristina Mattar da Silva, Gilbert Engler, Maria Fatima Grossi-de-Sa   +10 more
doaj   +2 more sources

Mortality of the cotton boll weevil in drip and sprinkler irrigated cotton crops

Brazilian Journal of Biology, 2021
The cotton boll weevil, Anthonomus grandis grandis Boheman (Coleoptera: Curculionidae), is a key cotton crop pest in Brazil. Adverse climatic factors, such as high temperatures and low soil moisture, dehydrate oviposited cotton squares (bud flowers) on ...
R.F. Faustino, C.A.D. Silva, J.C. Zanuncio, J.R. Pereira, A.I.A. Pereira   +4 more
doaj   +1 more source

A New qPCR Assay for the Rapid Diagnosis of Anthonomus grandis Subspecies

Insects, 2023
Rapid and accurate identification of Anthonomus grandis subspecies is crucial for effective management and eradication. Current diagnostic methods have limitations in terms of time to diagnosis (up to seven days) and can yield ambiguous results. Here, we
Tyler Jay Raszick, Lindsey C. Perkin, Alejandra Godoy, Xanthe A. Shirley, Karen Wright, Paxton T. Martin, Charles P. -C. Suh, Raul Ruiz-Arce, Gregory A. Sword   +8 more
doaj   +1 more source

Risk of control failure to insecticides malathion, profenophos + cypermethrin mixture, and fipronil in boll weevil (Coleoptera: Curculionidae) populations from Bahia, Brazil

Journal of Cotton Research, 2023
Background To control the boll weevil Anthonomus grandis grandis (Coleoptera: Curculionidae), a key pest of cotton in the Americas, insecticides have been intensively used to manage their populations, increasing selection pressure for resistant ...
Beatriz S. Coelho, Suzany A. Leite, Mateus P. dos Santos, Raul N. C. Guedes, Cristina S. Bastos, Aldenise A. Moreira, João E. V. Bonfim, Maria A. Castellani   +7 more
doaj   +1 more source

EVALUATION OF THE SUSCEPTIBILITY OF THE BOLL WEEVIL (Anthonomus grandis, BOHEMAN) TO MALATHION IN THE LAGUNA REGION

Tropical and Subtropical Agroecosystems, 2022
Background. Resistance to an insecticide is what determines its effectiveness and the lack of information limits effectiveness in the control of the boll weevil in cotton crops. Objective. The objective of the study was to determine the susceptibility of
C. Silva-Martinez, Pedro Cano-Rios, U. Nava-Camberos, J.L. Garcia-Hernandez, J.L. Reyes-Carrillo, F.J. Sanchez-Ramos, S.S. Mendoza-Retana   +6 more
doaj   +1 more source

Development, survival and morphometric parameters of boll weevil reared in different photoperiods [PDF]

Brazilian Journal of Biology
Third instar larvae of the cotton boll weevil, Anthonomus grandis grandis (Boheman) (Coleoptera: Curculionidae) are offered to the parasitoid Jaliscoa grandis Burks, 1954 (=Catolaccus grandis) (Hymenoptera: Pteromalidae) for mass-rearing.
M. H. P. Martínez, E. D. Vasconcelos, J. G. Di Stefano, J. C. Zanuncio, C. A. D. Silva   +4 more
doaj   +1 more source

Parasitoids of boll weevil Anthonomus grandis and resident predators in kaolin-treated cotton

Semina: Ciências Agrárias, 2013
Simultaneous use of control methods is essential to reach success in managing arthropod pests. The current study investigated the effect of kaolin application on resident predators in the cotton plant canopy and parasitism of boll weevil on abscised ...
Roberta Leme Santos, Robério Caros dos Santos Neves, Felipe Colares, Jorge Braz Torres   +3 more
doaj   +1 more source

Fertility Life Table, Thermal Requirements, and Ecological Zoning of Anthonomus grandis grandis Boheman (Coleoptera: Curculionidae) in Brazil

Insects, 2023
The boll weevil, Anthonomus grandis grandis Boh., is the most important cotton pest in Central and South America. The biological characteristics and thermal requirements of boll weevils reared on an artificial diet were assessed at seven constant ...
Fernanda Polastre Pereira, Alexandre José Ferreira Diniz, José Roberto Postali Parra   +2 more
doaj   +1 more source

Rational Practices to Manage Boll Weevils Colonization and Population Growth on Family Farms in the Semiárido Region of Brazil

Insects, 2014
Because boll weevil, Anthonomus grandis Boh. develops partially protected inside cotton fruiting structures, once they become established in a field, they are difficult to control, even with nearly continuous insecticide spray.
Robério C. S. Neves, Felipe Colares, Jorge B. Torres, Roberta L. Santos, Cristina S. Bastos   +4 more
doaj   +1 more source

Selective application of malathion: effect on boll weevil, non-target insects and natural enemies [PDF]

Brazilian Journal of Biology
Non-selective chemical insecticides are the main method to manage the major insect pest of cotton in the Americas, the boll weevil Anthonomus grandis (Boheman, 1843) (Coleoptera: Curculionidae).
S. F. Camelo, C. A. D. Silva, J. C. Zanuncio   +2 more
doaj   +1 more source