Marcos Roberto Potenza

Instituto Biológico · Centro de Pesquisa e Desenvolvimento de Proteção Ambiental (CPDPA)

The cockroach Blattella germanica is one of the most known species. They are found in houses, restaurants, storehouses, hospitals, supermarket and food industries. The traditional control have been made through different methods; the most used is insecticide pulverization. The technology of insecticides application have given conditions to improve...

Mites can occur in large numbers in storage units, causing serious economic damage to stored products, as well as health problems such as asthma, diarrhea, acute enteritis, and allergic reactions. In Brazil, spice and medicinal dehydrated plants are widely sold in bulk, but almost nothing is known about mite infestations. Thus, the objective of thi...

In Brazil, the production of dried herbs and condiments is on a smaller scale than that of its other agricultural sectors; however, it has been growing and attracting new producers, driven by the stimulus to provide healthy and gourmet foods. Insects in the order Psocoptera may cause loss of quality in such dried foods, and because of their small s...

RESUMO Psocoptera é um grupo de insetos com cerca de 5.600 espécies descritas em todo o mundo. Grande parte delas vive sob ou sobre cascas e folhagens de árvores e arbustos, na serrapilheira úmida e em ninhos de pássaros. Algumas espécies ocorrem em depósitos e residências, alimentando-se de farinhas, farelos, massas e cereais, sendo que a combinaç...

The subterranean termite Coptotermes gestroi (Wasman) (Isoptera: Rhinotermitidae) is considered one of the main pest species in urban areas in the Southeast Region of Brazil. For the control of this pest, the use of chemical insecticides is recommended, but this method is problematic in urban areas because of the risks of intoxication in the popula...

Organophosphate pesticides are among those with the highest acute toxicity and are available on the market and used in several regions of Brazil. The concentration and residence time of the organophosphate pesticide, chlorpyrifos, in the air after application in a greenhouse were investigated. For more than 24 h, the chlorpyrifos remained in the gr...

The occurrence of the black rat, Rattus rattus , in major Brazilian cities has increased in the recent years. To evaluate if the efforts of public rodent control have been reaching the species in the city of São Paulo, a survey was conducted in flooding areas using live trapping before and after implementation of the control program. Captures were...

EFEITO INSETICIDA DE ALGUNS EXTRATOS VEGETAIS SOBRE A MOSCA-DO-MEDITERRÂNEO EM LABORATÓRIO

Insects invade stored foods such as corn, nuts and dried fruits that are ingredients of pet food. Toxigenic fungi (Aspergillus, Penicillium and Fusarium) are also contaminants of these substrates. The insects are mechanical vectors and the infestation increases the humidity of dried food, thus promoting the fungal growth and the production of mycot...

This study investigated the ability of weevils to transmit Aspergillus flavus and Fusarium verticillioides fungal spores and the consequent production of mycotoxins. For this purpose, corn grain samples were stored in flasks connected to a hose to form a closed system (flasks A and B). Flasks A were inoculated with the following groups: group 1 (co...

The present study diagnosed diseases present in Rattus rattus by histopathology. The material consisted of 43 specimens captured in the eastern city of São Paulo – Brazil. The animals were necropsied, and the organs were processed histologically and stained with hematoxylin-eosin. Microscopic analysis showed in the vicinity of portal spaces, eggs a...

Lasioderma serricorne is a beetle that infests stored and industrialized dry foods such as cereal bars, granola, flour and pasta, amongst others, depreciating the products and causing economic losses. It is therefore critical for these products a packaging that presents, in addition to good mechanical, barrier and machinability properties, a good r...

Bioassays were made to determine contact activity of aqueous and acetone extracts of Mirabilis jalapa, Ricinus communis, Euphorbia pulcherrima, Pilea microphilla, Pteridium aquilinum, Sansevieria trifasciata, Dahlia pinnata, Codiaeum variegatum, Agave angustifolia, Ruta graveolens, Malvaviscus arboreus, Santolina chamaecyparissus, Impatiens walleri...

This work aimed to evaluate the effect of irradiated aqueous, hexanic and ethanolic extracts of Solanum paniculatum, Dahlia pinnata, Lycopersicon esculentum, Nephrolepis pectinata, Ruta graveolens, Ficus elastica, Lavandula angustifolia, Rhododendron simsii, Agave angustifolia, Ocimum basilicum, Coffea arabica and Hibiscus rosa-sinensis, in order t...

The presence of Sitophilus zeamais causes damages through severe weight reduction, depreciation of commercial value of the product and reduction of its nutritional value, also acting as a disseminator of fungus, favouring the deterioration of stored product, causing the increase of moistness and temperature of mass of grains, due to the insects, me...

Termites attack cellulose and woods, damaging furniture, floors, roofs and other structures. Chemical treatment of the soil is the most common control for subterranean termites which forms a barrier above and around infested structures. When conventional controls are applied colony sizes and satellite nests are not known. The objective of this test...

The shiitake mushroom is an aerobic fungus decomposer of wood, traditionally cultivated in oak trunks in other countries. In Brazil it is cultivated in the trunks of newly-cut Eucalyptus spp., an abundant and low-cost tree. Ease of getting the substrate and its acceptation in business, have made it the second most-consumed mushroom in the world. Th...

Dentre os fatores que contribuem para reduzir a produtividade das lavouras de milho estão as pragas, destacando-se a lagarta-do-cartucho, Spodoptera frugiperda, a qual pode reduzir a produção em até 34%. Um dos métodos de controle de pragas, cujo custo é reduzido e não causa efeitos indesejáveis ao ambiente, é o desenvolvimento de cultivares resist...

Insect pests are a major factor in limiting maize yields. The fall armyworm, Spodoptera frugiperda has been considered the most important field pest, reducing yields up to 34%. Insect resistance has been considered a low cost method of control, and represents a significant factor for preserving the environment. Several resistant lines have been rel...

The presence of Sitophilus zeamais causes damages by strong weight reduction, depreciation of commercial value of the product and reduction of its nutritional value. The plant extracts have potencial substances for pest control. This work aims at evaluating the effects of the aqueous, hexanic and ethanolic irradiated extracts of Lycopersicon escule...