Resistance of Bt transgenic maize to lesser cornstalk borer (Lepidoptera: Pyralidae).

To determine if Bt maize seedlings are protected against lesser cornstalk borer damage, Bt hybrids at the 3 and 4 leaf stages were tested under temperatures between 20-32oC and artificial infestation. A high level of resistance was reported in all Bt maize as expressed by larval survival, larval weight, damage score, and number of surviving plants. All Bt maize protected plants against lesser cornstalk borer damage. Also, the resistance present in the Bt maize was not affected by daytime temperature.

Development and reproduction of Olla v-nigrum (Coleoptera: Coccinellidae) fed Anagasta kuehniella (Lepidoptera: Pyralidae) eggs supplemented with an artificial diet.

2013

Nomuraea rileyi (Hypocreales: Clavicipitaceae) in Helicoverpa armigera (Lepidoptera: Noctuidae) Larvae in Brazil.

2015

Comparison of biology between Helicoverpa zea and Helicoverpa armigera (Lepidoptera: Noctuidae) reared on artificial diets.

The objective of this study was to compare growth and development of Helicoverpa zea Boddie and Helicoverpa armigera Hübner (Lepidoptera: Noctuidae) larvae that were feeding on an artificial diet. Neonate larvae of H. zea and H. armigera were collected in maize fields cultivated at the Brazilian Agricultural Research Corporation, Embrapa Maize & Sorghum, in Sete Lagoas (Minas Gerais) and in farmers? cotton fields in Luís Eduardo Magalhães (Bahia), respectively. Bioassays were conducted in the laboratory using individual larvae in 50 mL plastic cups fed a white bean?based artificial diet and maintained at a temperature of 26 ± 2 °C and a relative humidity of 47 ± 10%. The following larval biological parameters were evaluated: number and duration of instars, survival of larval instars and pupae, larval biomass, larval head capsule size, and larval length. An adaptation index was computed for comparison of development of the 2 species. Significant differences were observed between the species for all variables except for the number of instars and pupal survival. Although H. armigera larvae developed faster and were smaller than H. zea larvae, the diet tested can be considered adequate for rearing both species in the laboratory.

Species from the Heliothinae complex (Lepidoptera: noctuidae) in Tucuman, Argentina, an update of geographical distribution of Helicoverpa armigera.

The Heliothinae complex in Argentina encompasses Helicoverpa gelotopoeon (Dyar), Helicoverpa zea (Boddie), Helicoverpa armigera (Hu ̈ bner), and Chloridea virescens (Fabricius). In Tucum an, the native species H. gelotopoeon is one of the most voracious soybean pests and also affects cotton and chickpea, even more in soybean-chickpea succession cropping systems. Differentiation of the Heliothinae complex in the egg, larva, and pupa stages is difficult. Therefore, the observation of the adult wing pattern design and male genitalia is useful to differentiate species. The objective of this study was to identify the species of the Heliothinae complex, determine population fluctuations of the Heliothinae complex in soybean and chickpea crops using male moths collected in pheromone traps in Tucuman province, and update the geographical distribution of H. armigera in Argentina. The species found were H. gelotopoeon, H. armigera, H. zea , and C. virescens. Regardless of province, county, crop, and year, the predominant species was H. gelotopoeon . Considering the population dynamics of H. gelotopoeon and H. armigera in chickpea and soybean crops, H. gelotopoeon was the most abundant species in both crops, in all years sampled, and the differences registered were significant. On the other hand, according to the Sistema Nacional Argentino de Vigilancia y Monitoreo de Plagas (SINAVIMO) database and our collections, H. armigera was recorded in eight provinces and 20 counties of Argentina, and its larvae were found on soybean, chickpea, sunflower crops and spiny plumeless thistle (Carduus acanthoides). This is the first report of H. armigera in sunflower and spiny plumeless thistle in Argentina.

Mortalidade natural de lagartas de Chrysodeixis includens (Walker, 1857) (Lepidoptera: Noctuidae) em lavouras de soja na região de Dourados - MS.

2015

Flutuação populacional de machos adultos de Helicoverpa spp. (Lepidoptera; noctuidae) em Mato Grosso do Sul.

2015

Determinação do número de instares de Spodoptera frugiperda (J.E. SMITH, 1797) (Lepidoptera: Noctuidae) em sorgo sacarino BRS 506

2015

Reavaliação do nível de dano de Spodoptera frugiperda (J. E. SMITH, 1797) (Lepidoptera: Noctuidae) em milho convencional.

2015

Efeito do milho attack tl nos parâmetros biológicos de Spodoptera frugiperda(J.E. SMITH, 1797) (Lepidoptera: Noctuidae)

2015

Danos causados por Eudocima spp. (LEPIDOPTERA NOCTUIDAE) em frutos de maçã.

Recentemente, uma espécie de mariposa perfuradora de frutos, Eudocima spp., foi encontrada ocasionando danos em frutos de maçã em áreas de produção da Serra Catarinense. Trata-se de um inseto nativo da América do Sul

Avaliação do sistema Trapview no monitoramento de adultos de Grapholita molesta (LEPIDOPTERA: TORTRICIDAE) em pomares de macieira.

2016

Patogenicidade dos fungos entomopatogênicos Beauveria sp e Isaria sp sobre Grapholita molesta (Lepidoptera: Tortricidae) em laboratório.

A mariposa oriental, Grapholita molesta é uma das principais pragas da macieira. O objetivo do estudo foi avaliar a patogenicidade dos fungos Beauveria sp e Isaria sp sobre essa praga.

Comparison of biology between Helicoverpa zea and Helicoverpa armigera (Lepidoptera: noctuidae) reared on artificial diets.

2016

Integrated control of two tortricid (Lepidoptera) pests in apple orchards with sex pheromones and insecticides.

The apple is attacked by a significant number of insect pests in Brazilian commercial orchards, including Bonagota salubricola and Grapholita molesta (Lepidoptera: Tortricidae). Sexual disruption of B. salubricola and G. molesta was evaluated in apple orchard using the flowable pheromone formulations, SPLAT Grafo+Bona (SG+B), SPLAT Attract and Kill Grafo+Bona (SAKG+B), and compared with the standard insecticides used for management in the Integrated Apple Production (IAP) system. Both formulations were applied at a rate of 1kg/ha on October 10, 2005 and December 13, 2005 using 300 and 1000 point sources/ha of SG+B and SAKG+B, respectively in experimental units of 7 ha. Adult male captures of B. salubricola and G. molesta were evaluated weekly in Delta traps with specific synthetic sex pheromone from October 10, 2005 to February 14, 2006. Damage to fruits was evaluated on November 21 and December 21, 2005, and January 25 and February 14, 2006. In the SPLAT treated experimental units a significant reduction was observed in the number of B. salubricola and G. molesta males caught in Delta traps compared to the experimental unit IAP. Damage by B. salubricola at harvest ranged from 1.63 to 4.75% with no differences between treatments, while damage by G. molesta was near zero in all experimental units. Mating disruption using SG+B and SAKG+B was sufficient to control B. salubricola and G. molesta with results equivalent to IAP guidelines. This technology is promising for management of both pests in Brazilian apple orchards with immediate reduction of 43% in the number of insecticide applications.