Percevejos (Hemiptera: Heteroptera) Coletados Em Aceroleira (Malpighia Glabra L.) Em Jaboticabal, Sp

Michelotto, Marcos Doniseti; Silva, R.A. da; Busoli, Antônio Carlos

doi:10.1590/1808-1657v73p1232006

Cited by 3 publications

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Economic injury levels and economic thresholds for Leptoglossus zonatus (Dallas) (Hemiptera: Coreidae) infesting seed maize

Foresti

Bastos

Fernandes

et al. 2017

Pest Management Science

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BACKGROUND: Although Leptoglossus zonatus is considered a secondary pest of maize grown for grain, when grown for seed, this pest can cause significant economic damage. There are no records of management recommendations for this pest. The objectives of this work were to quantify losses caused by L. zonatus to different genotypes used for seed maize production and to estimate the acute toxicity of selected insecticides to L. zonatus using different application technologies. The ultimate goal was to calculate economic injury levels (EILs) and develop economic thresholds (ETs) for L. zonatus infesting seed maize.RESULTS: EILs and ETs varied, respectively, from 3 to 8 and from 2 to 6 adults per 1000 plants, depending on the genotype, insecticide and application technology. Effective control was obtained by using aerial or ground application of -cyhalothrin (10.6%) + thiametoxan (14.1%) or permethrin (38.4%) at the rates of 1.48 mL ha -1 and 27.10 mL ha -1 , respectively, or ground application of methomyl (21.5%) at the rate of 244.06 mL ha -1 . CONCLUSION: Maize grown for seed is susceptible to L. zonatus damage during reproductive stages, and the pest densities requiring management vary with genotype, insecticide, and application technology. These results contribute significantly to integrated pest management (IPM) for seed maize.

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Economic injury levels and economic thresholds for Leptoglossus zonatus (Dallas) (Hemiptera: Coreidae) infesting seed maize

Foresti

Bastos

Fernandes

et al. 2017

Pest Management Science

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Shield Bugs (Scutelleridae)

EgerJr.

Barcellos

Weiler

2015

True Bugs (Heteroptera) of the Neotropics

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Scutelleridae Leach includes three subfamilies, 25 genera, and almost 100 species in the Neotropics. Both subfamilies Scutellerinae and Elvisurinae are represented by a single genus, and Pachycorinae contains the majority of the species. Neotropical shield bugs are usually dull colored, but polymorphisms and sexual dimorphisms have caused a considerable confusion in their taxonomy. Several genera need revision, and many new taxa are awaiting formal descriptions. Biological and ecological data are scarce, with a few species reported as minor pests.

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Aspectos biológicos e danos de Pachycoris torridus em pinhão-manso

et al. 2011

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ResumoPachycoris torridus (Hemiptera: Scutelleridae) é relacionado como uma praga de frutos e de sementes na cultura do pinhão-manso (Jatropha curcas L.). Este trabalho teve por objetivo estudar os aspectos biológicos e os danos que essa espécie pode ocasionar nessa cultura. Ovos, ninfas e adultos de P. torridus foram coletados e levados a laboratório, onde foram mantidos em câmaras climatizadas para estudo de aspectos biológicos. Para avaliação dos danos, adultos foram confinados em gaiolas no campo, contendo frutos em desenvolvimento. As posturas obtidas tinham em média 57,6 ovos. O período embrionário durou 12,7 dias, enquanto as ninfas de primeiro ao quinto ínstar duraram, respectivamente, 8,1; 10,9; 9,7; 11,6 e 11,7 dias. Da fase de ovo a adulto, o ciclo completou-se em 86,5 dias em média. A cópula durou em média 3h43min. Frutos em desenvolvimento e que receberam uma fêmea, um e dois casais para alimentação, reduziram em 63%; 54% e 85% respectivamente, sua massa, quando comparados com frutos sem percevejos. As sementes formadas em frutos que receberam uma fêmea e um casal apresentaram redução de 99 e 58% no teor de óleo respectivamente. Frutos com dois casais não armazenaram óleo nas sementes. Em frutos desenvolvidos infestados com um casal não se verificou alteração no tamanho e na redução ou alteração da massa, no tamanho e teor de óleo das sementes.Palavras-chave: Jatropha curcas, biologia, Euphorbiaceae, Hemiptera, Scutelleridae. Biological aspects and damage of Pachycoris torridus on physic nut plants AbstractPachycoris torridus (Hemiptera: Scutelleridae) has been reported as a species that can damage fruit and seed of physic nut, Jatropha curcas L. The aim of this study was to evaluate the biological aspects and the damage of this stink bug species on J. curcas. Eggs, nymphs and adults of P. torridus were collected and maintained in a growth chamber. Some adults were confined in cages with developing fruits to damage assessment under field conditions. The postures had an average of 57.6 eggs. The incubation period was 12.7 days and the nymphal stage lasted 8. 1, 10.9, 9.7, 11.6 and 11.7 days for the first, second, third, fourth, and fifth instars, respectively. The development from egg to adult was completed in 86.5 days. The copulation took 3h43min. The presence of one female, one or two couples of stink bug caused decreases of 63, 54 and 85% in fruit weight when compared with control fruit (without insects). Seed oil content was reduced in 99% and 58% when fruits were attacked by a female or a couple. Those fruits with two couples had no oil in seed. For mature fruits, there was not observed any change due to insect presence.

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Percevejos (Hemiptera: Heteroptera) Coletados Em Aceroleira (Malpighia Glabra L.) Em Jaboticabal, Sp

Cited by 3 publications

References 1 publication

Economic injury levels and economic thresholds for Leptoglossus zonatus (Dallas) (Hemiptera: Coreidae) infesting seed maize

Economic injury levels and economic thresholds for Leptoglossus zonatus (Dallas) (Hemiptera: Coreidae) infesting seed maize

Shield Bugs (Scutelleridae)

Aspectos biológicos e danos de Pachycoris torridus em pinhão-manso

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