Abstract Spodoptera frugiperda (J.E. Smith, 1797) is considered a key pest of maize. However, the artificial diets used for rearing this insect in laboratory do not contain corn. The aim study was to evaluate biology and compare food consumption by S. frugiperda, as well preference larvae standard diet corn-based diet. Three following were evaluated: based on beans (D1), with corn flour substitute wheat germ (D2), replacing green (D3). biological parameters evaluated period survival pupae;...

The objectives were to evaluate the efficiency of entomopathogenic fungi against Plutella xylostella (L.) and compatibility most virulent isolates with some insecticides registered for use on cabbage crops. Pathogenicity tests used Beauveria bassiana, Metarhizium rileyi, Isaria fumosorosea, sinclairii, Lecanicillium muscarium standardized at a concentration 10(7) conidia/ml. Cabbage leaf discs immersed in these suspensions, after evaporation excess water, placed 10 second-instar larvae P....

The insecticidal activity of hexane extracts from the roots and leaves Aristolochia malmeana was evaluated against Anticarsia gemmatalis larvae by topical application. Extract most active caused 50% mortality in at 308.4 µg/µL. From this extract, a clerodane diterpene, (−)-kolavenic acid, three lignans, (−)-kusunokinin, (−)-hinokinin, (8S,8′R,9S)-cubebin, were isolated chromatography partition procedures then for their activities either individually or pairs. (−)-Kusunokinin showed higher A....

The objective of our work was to identify the prey that offers optimum production predator, Podisus nigrispinus (Dallas). cost predator determined for each prey. We test hypothesis types supporting optimal development do not facilitate cost-effective rearing P. nigrispinus. Second-instar nymphs were reared in 1000-ml transparent plastic containers and maintained under controlled conditions (temperature, 25 ± 1 °C; photophase duration, 12 h; relative humidity, 70 10%), following biological...

The Colorado potato beetle, Leptinotarsa decemlineata (Say) ([Coleoptera]: [Chrysomelidae]), is the most important defoliator of solanaceous plants worldwide. This insect displays a notorious ability in adapting to biological and synthetic insecticides, although some cases this adaptation carries relevant fitness costs. Insecticidal gene silencing by RNA interference novel mode action pesticide against L. that activated ingestion double stranded (dsRNA) targeting vital gene. We previously...

Hyperspectral Remote Sensing allows the accurate analysis of developmental stages insects and their interactions with biocontrol agents. This study spectrally characterizes life Diatraea saccharalis evaluates physiological responses larvae parasitized by Cotesia flavipes. For this, hyperspectral reflectance data were obtained high-precision sensors. The experiments took place in laboratory under controlled conditions to ensure reproducibility. measurements cov-ered eggs, larvae, pupae...

Hyperspectral Remote Sensing allows the accurate analysis of developmental stages insects and their interactions with biocontrol agents. This study spectrally characterizes life Diatraea saccharalis evaluates physiological responses larvae parasitized by Cotesia flavipes. For this, hyperspectral reflectance data were obtained high-precision sensors. The experiments took place in laboratory under controlled conditions to ensure reproducibility. measurements covered eggs, larvae, pupae adults,...

The oviposition preference and larval performance of females Ceratitis capitata (Wiedemann) were examined. Wild or laboratory-reared tested for in relation to papaya fruit different stages ripeness, as well two fruits: apple. results demonstrated that both wild preferred ripe compared unripe oviposition, was the best performance. When with fruits (papaya apple), larvae developed better papaya. However, only showed a on opposed Laboratory-reared no resulted

This research intended to investigate if the presence of pesticides in soil could affect pathogenicity Metarhizium anisopliae Metsch. (Sorokin) for Ceratitis capitata (Wied.) and assess effect conidia application as suspension or dry conidia. The fungicides chlorothalonyl tebuconazol, acaricide abamectin, insecticide trichlorfon, herbicide ametrin were applied at manufacturer-recommended doses. Soil samples placed glass flasks given fungus conidial dry. After pesticide application, 20...

Abstract The isobutyl amides pellitorine (compound 1) and 4,5‐dihydropiperlonguminine 2) were extracted from the seeds of Piper tuberculatum Jacq. (Piperaceae) in yields 6.10 4.45% respectively. acute toxicities to velvetbean caterpillar, Anticarsia gemmatalis (Hübner) (Lepidoptera: Noctuidae), extracts seeds, leaves stems P. , compounds 1 2, evaluated by means contact bioassays. caused 80% mortality when doses higher than 800.00 µg insect −1 extract administered caterpillars. Compounds 2...

Abstract BACKGROUND: The use of Trichogramma species is a potential key strategy in integrated pest management. However, its effectiveness depends on the chemicals that do not interfere with parasitism and parasite population growth. Here, study was made effects synthetic insecticides pretiosum exiguum different hosts ( Ephestia kuehniella, Plutella xylostella Spodoptera frugiperda ) influence International Organisation for Biological Control (IOBC/WPRS) methodology selectivity studies using...

Abstract The goal of this study was to evaluate the quality Cotesia flavipes from different bio-factories as biological control agents. We evaluated characteristics parasitoids throughout their lifespan, and measured body length width, abdomen thorax width right forewing female male parasitoids. Our results showed that number males pupal viability were similar among bio-factories; emerged females greater in I II; egg-pupa period shorter bio-factory IV; a longevity found II III. Sex ratio (at...

The rearing of Telenomus remus (Nixon 1937) has been limited due to the difficulty its development in natural host, eggs Spodoptera frugiperda (J.E. Smith). Environmental conditions can strongly affect egg's parasitoid on factitious hosts; however, until now only effects temperature have studied. importance relative humidity T. parasitism is poorly understood; therefore, this study evaluated Corcyra cephalonica (Stainton, 1866) and S. under different regimes. Lifetime viability were higher...

The study of the technical and economic aspects rearing natural enemies is essential for its effective use as a biological control agent in field. aim this was to determine cost production parasitoid, Telenomus remus (Nixon; Hymenoptera: Platygastridae), reared eggs host, Spodoptera frugiperda (J. E. Smith; Lepidoptera: Noctuidae), alternative Corcyra cephalonica (Stainton; Pyralidae). insects were accordance with their respective methodologies laboratory rearing. biocontrol US$ 0.0004 when...

Abstract The diamondback moth ( DBM ), Plutella xylostella (L.), is a major pest of brassica crops worldwide. Control this difficult because it rapidly develops resistance to synthetic and biological insecticides the effects on its natural enemies. Podisus nigrispinus (Dallas) predator that feeds prey, as well host plants an important control agent s. aim study was determine susceptibility P. larvae two bioinsecticides: HD 1 strain Bacillus thuringiensis B. var. kurstaki ) commercial product...

Helicoverpa armigera (Hübner) (Lepidoptera: Noctuidae) is a polyphagous pest with wide geographic distribution. This first arrived in Brazil 2013, and since then studies on possible control methods for it have been necessary. A method the of H. using egg parasitoid Trichogramma pretiosum Riley (Hymenoptera: Trichogrammatidae). Therefore, objective this study was to evaluate performance T. eggs, which are known represent suitable hosts development species laboratory. Parasitism emergence...

Abstract Spodoptera frugiperda (J.E. Smith, 1797) (Lepidoptera: Noctuidae) is a pest of great economic importance which can feed on more than 300 plant species. As it polyphagous, its host plants may have variable physical and chemical constitutions. This influence larval development, as protein carbohydrate levels are important factors for adequate biological development. The aim this study was to evaluate insect developmental parameters well compare the food consumption S. larvae reared...

O objetivo deste trabalho foi avaliar o efeito de cultivares repolho e couve na biologia da traça-das-crucíferas; analisar a composição química das plantas, em relação aos glucosinolatos aplicar análise multivariada classificação cultivares. Foram utilizadas as cultivares: verde Chato-de-quintal híbrido Midori; roxo Roxo precoce TPC00682; couve-manteiga Geórgia (padrão suscetibilidade) HS20. avaliadas características biológicas praga: viabilidade duração fases larval pupal, razão sexual,...

RESUMO O objetivo desse trabalho foi avaliar aspectos biológicos de Podisus nigrispinus (Dallas) alimentado com lagartas Diatraea saccharalis (Fabricius). Os ovos (200) utilizados para o experimento foram provenientes da criação massal do Laboratório Biologia e Criação Insetos Departamento Fitossanidade FCAV/UNESP. Esses mantidos em sala climatizada a 25 ± 1° C, fotofase 12h UR 70 10%, sendo avaliados os parâmetros: período incubação viabilidade dos ovos. Ao atingirem 2o estádio ninfal,...

Factitious hosts are largely used in parasitoid production. However, changes parasitism capacity may happen when switched. Therefore, the ability of a species to be reared on factitious host and still keep high level natural target pest after successive rearing can determine quality must investigated. Thus, we evaluated Telenomus remus Corcyra cephalonica eggs compared with its host, Spodoptera frugiperda eggs, for different generations. After being C. cephalonica, T. S. was measure...

Abstract Acetone and ethanol extracts of the tubercula several compounds isolated from Aristolochia pubescens (Willd) were bioassayed on velvetbean caterpillars, Anticarsia gemmatalis (Hübner), for evaluation insecticidal activities. Of subjected to bioassay, acetone extract showed highest activity. (−)‐Cubebin did not show activity against soybean whereas aristolochic acid ent ‐kaur‐15‐en‐17‐ol increased larval period. These compounds, (+)‐eudesmin (+)‐sesamin, reduced viability this...