ABSTRACT Lacewings (Chrysopidae) are predators that regulate mealybug, aphid, whitefly, and lepidopteran populations in various important agricultural crops. The predator Chrysoperla genanigra Freitas (Neuroptera: Chrysopidae) is widely found melon production areas, where chemical pesticides usually applied for pest control. Studies evaluating the impact of these on C. incipient. Thus, objective this study was to assess residual toxicity seven insecticides larvae. experiment conducted under...

ABSTRACT In pest control, understanding insecticide compatibility and selectivity is crucial to effectively integrate the use of insecticides parasitoids. The aim this study was evaluate mixtures fungicides recommended for melon their in Trichogramma pretiosum Riley (Hymenoptera: Trichogrammatidae). were evaluated six mixtures: 1) Spinetoram + Pyraclostrobin Fluxapyroxad; 2) Cyromazine 3) Cyproconazole Spinetoram; 4) Cyantraniliprole Abamectin Metiram Pyraclostrobin; 5) Azoxystrobin...

The alternative use of plant essential oils as pesticide, repellent and/or antifeedant has been emphasized an important tool in integrated pest management (IPM), promoted by the growing interest methods that fulfil requirements efficiency, safety, selectivity, technically feasible and environmentally safe. objective this work was to determine pesticide potential rosemary pepper (Lippia origanoides Kunth; Verbenaceae), citronella (Cymbopogon winterianus Jowitt; Poaceae) lemongrass citratus...

The mass rearing of parasitoids represents a fundamental stage for programmes biological control. progeny the parasitoid Palmistichus elaeisis Delvare and LaSalle (Hymenoptera: Eulophidae) were evaluated on previously refrigerated pupae Bombyx mori L. (Lepidoptera: Bombycidae). Forty-eight to 72 hours-old B. stored at 10 ºC five, 10, 15 or 20 days then exposed parasitism by P. females. This showed shorter duration life cycle when reared which during days. parasitized 100% after storage all...

Biological control of lepidopteran defoliators using parasitoids is a promising alternative. The objective this work was to evaluate the reproduction Trichospilus diatraeae (Hymenoptera: Eulophidae) in pupae eucalypt Thyrinteina arnobia (Lepidoptera: Geometridae) and Hylesia paulex Saturniidae). Host were individualized glass tubes (14 x 2.2 cm) with six parasitoid females for 24 h under controlled conditions [25 ± 2ºC; 70 10% (RH) 14 photo phase]. T. parasitized 95.8 2.85% 79.2 6.72% H....

Palmistichus elaeisis Delvare and LaSalle (Hymenoptera: Eulophidae) is a gregarious polyphagous parasitoid mainly of Lepidoptera pupae. The objective this paper as to study the developent on Bombyx mori L. (Lepidoptera: Bombycidae) pupae exposed one, nine, 18, 27, 36, 45 or 54 female P. elaeisis, respectively. females remained in contact with for 24 hours glass tubes (14.0 x 2.2 cm), packed climatic chamber regulated at 25 +/- 2 degrees C, 70 10% relative humidity photo phase 12 hours. With...

Neste trabalho foi estudada a capacidade de parasitismo Trichogramma pretiosum Riley linhagem bonagota, em ovos Bonagota salubricola (Meyrick), às temperaturas 18, 20, 22, 25, 28, 30 e 32ºC. Avaliou-se o número diário parasitados, porcentagem acumulada parasitismo, total parasitados por fêmea longevidade fêmeas. O durante as primeiras 24h oscilou 1,6 (32ºC) 8,8 (22ºC) T. pretiosum. acumulado B. atingiu 80% no período 1 4 dias 20°C 32ºC, respectivamente, somente 7º dia, 18°C. Na faixa térmica...

Knowledge of the thermal requirements Trichospilus diatraeae (Hymenoptera: Eulophidae) is important if it to be used successfully in control Diatraea saccharalis (Lepidoptera: Crambidae) sugarcane plantations. In current study, development T. was investigated pupae D. incubated at different temperatures. Seven females were placed with host for 24 h tubes within chambers 16, 19, 22, 25, 28 and 31 °C 70 ± 10% RH 14:10 L:D. The life cycle duration decreased as temperature increased, although no...

A mosca-das-frutas Anastrepha fraterculus é uma das principais pragas da cultura do pessegueiro (Prunus persica) no sul Brasil, podendo ocasionar perdas de até 100% produção.Neste trabalho, foram avaliados atrativos alimentares e armadilhas para o monitoramento A. em pomares na região Serra Gaúcha, RS, principal pólo produtor fruta consumo "in natura" Estado.Dois experimentos conduzidos avaliar a captura adultos com levedura torula formulada pastilha (2,5%) proteína hidrolisada (Nolure ® 5%)...

Euselasia eucerus (Hewitson, 1872) (Lepidoptera: Riodinidae) is a Brazilian native species commonly found in Eucalyptus plantations. Biotic mortality factors of this defoliator were studied urophylla plantation Minas Gerais State, Brazil aiming to identify natural enemies and their impact on insect. had biotic during all development stages. The most important Trichogramma maxacalii Voegelé Pointel, 1980 (Hymenoptera: Trichogrammatidae) egg stage (48.9%), tachinid fly (Diptera: Tachinidae)...

To use Palmistichus elaeisis Delvare and LaSalle, 1993 (Hymenoptera: Eulophidae) in a biological control programme of Thyrinteina arnobia (Stoll, 1782) (Lepidoptera: Geometridae), it is necessary to study thermal requirements, because temperature can affect the metabolism bioecological aspects. The objective was determine requirements estimate number generations P. different Eucalyptus plantations regions. After 24 hours contact with parasitoid, pupae placed 16, 19, 22, 25, 28 31 °C, 70 ±...

O sucesso de programas controle biológico com parasitóides depende pesquisas aplicadas e, por isso, estimouse o número ideal fêmeas Palmistichus elaeisis Delvare & LaSalle, 1993 (Hymenoptera: Eulophidae) para liberação em plantios eucalipto, visando lepidópteros desfolhadores. Em cada repetição foram utilizadas trinta e seis pupas do hospedeiro alternativo Anticarsia gemmatalis Hübner, 1818 (Lepidoptera: Noctuidae) 24 a 48 horas idade que, individualizadas armadilhas confeccionadas tela...

Mass rearing of parasitoids depends on choosing appropriate alternative hosts. The objective this study was to select hosts rear the parasitoid Palmistichus elaeisis Delvare & LaSalle, 1993 (Hymenoptera: Eulophidae). Pupae lepidopterans Anticarsia gemmatalis Hübner, 1818 (Lepidoptera: Noctuidae), Bombyx mori Linnaeus, 1758 Bombycidae) and Thyrinteina arnobia (Stoll, 1782) Geometridae) were exposed parasitism by females P. elaeisis. duration life cycle 21.60 ± 0.16 24.15 0.65 days pupae A. B....

This study assessed the biological characteristics of Cotesia flavipes (Cameron) (Hymenoptera: Braconidae) with different densities female parasitoids Diatraea saccharalis (Fabricius) (Lepidoptera: Crambidae) caterpillars. Third instar caterpillars D. were exposed to C. females at parasitoid host ratios 1:1, 3:1, 6:1, 9:1, and 12:1, 5 replications. The parasitism was 90% 3:1 ratio, emergence 100% for all densities. life cycle ranged from 18.17 ± 0.26 18.93 0.50 d 12:1 1:1 host. higher...

Estudou-se a capacidade de dispersão Trichogramma pretiosum Riley em ovos Anagasta kuehniella (Zeller), na cultura do tomateiro, diferentes estágios fenológicos e sistemas condução das plantas. A T. pretiosum, 24 horas após liberação, foi 7,37 7,94 m. área 120,20 138,72 m². O parasitismo 53,1% 87,3%, significativo acordo com o estágio fenológico da cultura. liberação dos parasitóides para controle Tuta absoluta (Meyrick) deve ser feita 75 pontos por hectare.

The Brazilian ground pearl (BGP), Eurhizococcus brasiliensis (Hemiptera: Margarodidae), is one of the most important grape pests in Brazil. Granular and water dispersible granule formulations, doses application, times treatment, application technology soil insecticides imidacloprid thiamethoxam were evaluated to control BGP infested vineyards. Thiamethoxam effectively reduced by 90% established No difference insect was observed between formulations thiamethoxam. Multiple applications...

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 B. G. was evaluated orchard using the flowable pheromone formulations, SPLAT Grafo+Bona (SG+B), Attract Kill (SAKG+B), compared with standard insecticides used for management Integrated Apple Production (IAP) system. Both formulations were applied at rate 1kg/ha on October 10, 2005 December 13, 300...

The strawberry sap beetle [Lobiopa insularis (Coleoptera: Nitidulidae)] is one of the most important pests crops. This study aimed to determine relationship between fruit maturation stages and feeding in laboratory evaluate food attractants population dynamics this species during crop season. To preference fruits 'Camarosa' at different [green (G), semi-ripe (SM) ripe (R)] were exposed adult beetles plastic cups. We evaluated field effect baits pest fluctuation with traps baited baits: (T1)...

Mass rearing of parasitoids is a fundamental step for biological control programs.The characteristics Palmistichus elaeisis Delvare & LaSalle (Hymenoptera: Eulophidae) were evaluated in pupae Anticarsia gemmatalis Hubner (Lepidoptera: Noctuidae) stored at low temperatures.Twenty four hours-old A. 12 °C 0, 1, 3, 6, 9, and d then exposed to parasitism by P. females.The life span was affected ranged from 19 24 on the host.Parasitism reached 100% host after storage all periods °C, adults emerged...

The possibility of cultivation without the use chemical insecticides or reduction thereof, associated with requirements consumers has motivated growers to return practice bagging fruit, but it is possible that this technique causes changes in visual and organoleptic characteristics fruits. objective study was evaluate postharvest 'Valerin' tomato fruits produced inside nonwoven bags (TNT) validate best period for bagging. came from commercial plants, located "Ubajara", "Ceará" State, Brazil....