Papers by Adriane Fonseca Duarte
Frontiers of Biogeography
Journal of Economic Entomology
Black fungus gnat larvae are one of the primary insect pests in greenhouse and nursery crops, and... more Black fungus gnat larvae are one of the primary insect pests in greenhouse and nursery crops, and Bradysia ocellaris (Comstock) (Diptera: Sciaridae) is one common pest species. This pest is difficult to control in Brazil because of the absence of registered insecticides. The aim of this work was to evaluate the effects of some insecticides on B. ocellaris larvae. We also verified that the insect growth regulator novaluron caused the deformation of B. ocellaris. Of the insecticides evaluated, malationa, and thiamethoxam showed high mortality rate (96 and 86 % respectively). Further, bioassays with acetamiprid (78 %) and novaluron (44 %) showed that the lethal concentrations (LC50) were 19.18 mg a.i.L-1 at 48h to acetamiprid and 1.24 mg a.i.L-1 at 120 h to novaluron. When larvae were fed on potato pieces treated with novaluron, independently of the dose, the mortality rate was 100 %, since no larvae could complete the development cycle. Among all evaluated insecticides, only acetamipr...
<i>Cosmolaelaps pampaensis</i> n. sp. <b>Types specimens.</b> Holotype fe... more <i>Cosmolaelaps pampaensis</i> n. sp. <b>Types specimens.</b> Holotype female and four paratype females, ColleCted by A. da F. Duarte on 5 MarCh and 26 June 2012, 16 April 2013 and two paratype males ColleCted on 5 MarCh and 26 June 2012 from soil at ACeguá, Rio Grande do Sul state, Brazil, deposited at ESALQ-USP. Five paratype females ColleCted on 26 June 2012 and 16 April 2013 and one paratype male ColleCted on 16 April 2013, deposited at UNIVATES. <b>Diagnosis.</b> Female dorsal shield retiCulate, with 39 pairs of setae and two unpaired setae, all spatulatemuCronate and with a disCernible basal asymmetriC protuberanCe, exCept <i>z1</i> and <i>Z5</i>, setiform. UnsClerotised lateroventral CutiCle with eight pairs of stout and setiform setae. Sternal shield lightly sClerotised, with indistinCt anterior margin. Genital shield bearing only <i>st5</i>. Three pairs of metapodal plates. Ten pairs of opisthogastriC setae (<i>Jv1–Jv5</i>; <i>Zv1–Zv5</i>). Epistome Convex, with anterior margin bearing dentiCles of similar sizes, medially trunCate to slightly depressed. Fixed CheliCeral digit with six teeth. TroChanter and femur of leg IV and femur of leg II with stout, trunCate, short and distally enlarged setae. <b>Female.</b> Dorsal idiosoma (Fig. 6): Dorsal shield 388 (375–405) long and 242 (230–256) wide (at level of <i>r6</i>), retiCulate, with 39 pairs of setae, inCluding two pairs of extra setae, [<i>j1–j6</i>, <i>z1–z6</i>, <i>s1–s6</i>, <i>r2–r5</i> on podonotal region of dorsal shield; <i>J1–J5</i>, <i>Z1–Z5</i>, <i>S1–S5</i>, <i>px2</i> (posterolaterad of <i>J2</i>) and <i>px3</i> (posterolaterad of <i>J3</i>) on opisthonotal region of dorsal shield] and two unpaired setae, <i>Jx 2</i> in transverse line with <i>J2</i>, and <i>Jx3</i> between <i>J3</i> and <i>J4</i>, on opisthonotal region of dorsal shield. All setae spatulate-muCronate, usually with a disCernible basal protuberanCe, exCept <i>z1</i> and <i>Z5</i>, setiform. Dorsal shield with 17 and six pairs of distinguishable lyrifissures and pores, respeC [...]
Ciência Rural, 2022
ABSTRACT: Soilless cultivation of strawberry is in expansion in Brazil due to factors like the re... more ABSTRACT: Soilless cultivation of strawberry is in expansion in Brazil due to factors like the reduction of phytosanitary problems and the possibility of extending the crop period, as well as the ergonometric facility for management of the culture. However, black fungus gnats (Sciaridae, Diptera) are ubiquitous pests in the greenhouse production system, causing direct and indirect damage to plants. ThIS study evaluated the occurrence of black fungus gnats species in semi-hydroponic cultivation of strawberry and to identify the species, as well as to describe the symptoms in infested plants. The research was developed in commercial productions of strawberry, in five municipalities (Arroio do Padre, Canguçu, Capão do Leão, Pelotas and Turuçu) during July to December 2017, where adult samples were collected twice a month, with petri dish traps containing water and neutral detergent placed inside the greenhouses between the plants. A total of 2030 adult gnats belonging to two species we...
FIGURES 14–15. Cosmolaelaps pampaensis, male, sternogenitoventral shield showing rounded processes.
FIGURES 6–13. Cosmolaelaps pampaensis, female. 6. dorsal idiosoma; 7. peritreme; 8. ventral idios... more FIGURES 6–13. Cosmolaelaps pampaensis, female. 6. dorsal idiosoma; 7. peritreme; 8. ventral idiosoma; 9. spermatheca; 10. epistome; 11. hypostome; 12. chelicera; 13. leg IV.
Experimental and Applied Acarology, 2020
The responses of arthropods to thermal stress are vital in ecological studies in order to underst... more The responses of arthropods to thermal stress are vital in ecological studies in order to understand survival, development, and reproduction. However, this subject is poorly addressed. In the order Mesostigmata, an abundance of species lives in the soil. Among these species, Stratiolaelaps scimitus (Womersley) is a predator used in the control of pest organisms that live in the soil. Mites of this species are commercialized in several countries, including Brazil, presenting efficiency in pest control in several crops. The objective of this study was to evaluate the effect of thermal shock on S. scimitus females, as well as to monitor the temperature variation in the environment. For each temperature, 80 experimental units were assembled for different periods (0.5, 1, 2, and 4 h). Experimental units were maintained at 25 °C, after exposure of the mites. Mortality and oviposition were evaluated. The results showed a 40% reduction in the survival of mites exposed to 37 °C for 4 h, compared to the control treatment (25 °C). Oviposition was less affected at 1 h exposure to temperatures of 19 and 12 °C and thermic fluctuation was observed in the greenhouse, especially inside the slabs. Understanding temperature effects in mites and the thermic fluctuation in the environment is essential to achieve satisfactory results in biological control. It is important to observe the scenario in which predatory mites will be released as these aspects are decisive in predatory activity.
Systematic and Applied Acarology, 2020
ADRIANE DA F. DUARTE1*, JULIANO L. P. DUARTE1a, LUCAS R. DA SILVA1b & UEMERSON S. DA CUNHA1c ... more ADRIANE DA F. DUARTE1*, JULIANO L. P. DUARTE1a, LUCAS R. DA SILVA1b & UEMERSON S. DA CUNHA1c 1Departamento de Fitossanidade, Faculdade de Agronomia Eliseu Maciel (FAEM) Universidade Federal de Pelotas, Campus Universitário Capão do Leão, s/no, Caixa postal 354, 96010-900, Pelotas, RS, Brazil. *Corresponding author: E-mail: [email protected]; [email protected]; [email protected]; [email protected].
Systematic and Applied Acarology, 2021
Bradysia species are major insect pests of protected production systems, including strawberry cro... more Bradysia species are major insect pests of protected production systems, including strawberry crops in semi-hydroponic systems. In Brazil, its management is difficult due to the absence of available effective pesticides. The aim of this study was to evaluate the predatory efficiency of two species of mites (Stratiolaelaps scimitus and Cosmolaelaps brevistilis) under laboratory conditions. The experiments were conducted at 25 ± 1°C, 75 ± 10% RH, in dark. In the first bioassay predation potential of each mite species, one female per arena, was evaluated on eggs, larvae (2–3 instar) and pupae of B. aff. ocellaris, replicated thirty times, and predation, oviposition, and survivorship were recorded for ten days. In the second bioassay, fly emergence was used to determine control efficacy. Each predator species was assessed at different densities (2, 5, 7 and 10) with ten larvae of B. aff. ocellaris in each experimental unit, replicated eight times. Stratiolaelaps scimitus performed bette...
Populacoes de Bradysia ocellaris (Sciaridae) podem causar prejuizos diretos, atraves da alimentac... more Populacoes de Bradysia ocellaris (Sciaridae) podem causar prejuizos diretos, atraves da alimentacao das larvas, ou indiretos atraves da disseminacao de fungos patogenicos em viveiros e na producao hidroponica de olericolas. Tendo em vista que os substratos onde as larvas da mosca se desenvolvem sao bastante umidos, o que favorece tambem o desenvolvimento e a manutencao de nematoides, conferindo assim o uso de nematoides entomopatogenicos como uma alternativa promissora para controlar a praga. Dessa forma, o presente trabalho objetivou avaliar a patogenicidade e virulencia de Heterorhabditis bacteriophora (HB) e Steinernema brazilense CB06 a larvas de B. ocellaris . O experimento foi conduzido em delineamento inteiramente casualizado, com tres tratamentos e dez repeticoes. Cada parcela foi constituida por placa de Petri (5 cm) revestida com duas folhas de papel filtro. Os juvenis infectantes (JIs) dos isolados foram inoculados no volume de 1 mL na concentracao de 100 JIs mL -1 . O tr...
No ambiente edafico ha uma diversidade de organismos beneficos e prejudiciais. Dentre os benefico... more No ambiente edafico ha uma diversidade de organismos beneficos e prejudiciais. Dentre os beneficos pode-se destacar insetos e acaros predadores, bem como agentes entomopatogenicos, enquanto que prejudiciais encontramos diversos fungos e bacterias patogenicas, fitonematoides e larvas de insetos. Dentre as larvas de insetos, dipteros do grupo “fungus gnats” possuem importância por serem um grupo pouco estudado e por que tem a capacidade de causar danos diretos e indiretos nos cultivos. O objetivo deste trabalho foi avaliar a eficiencia de Stratiolaelaps scimitus , sobre larvas de segundo e terceiro instar de Bradysia ocellaris com e sem chance de escolha em condicoes de laboratorio. Apos o estabelecimento das colonias em laboratorio, os experimentos foram mantidos em BOD (25 + 2 oC; 75 + 10% e no escuro) com delineamento inteiramente casualizado com vinte repeticoes para cada tratamento: T1 (10 larvas de B. ocellaris + uma porcao de Protorhabditis sp.), T2 (apenas 10 larvas de B. ocel...
A cultura do morangueiro em substrato e ambiente protegido possibilita a producao durante todo o ... more A cultura do morangueiro em substrato e ambiente protegido possibilita a producao durante todo o ano, com menor risco de problemas fitossanitarios. O morangueiro e uma cultura tipica de clima temperado ou tropical de altitude, sendo a temperatura uma das principais variaveis que exercem influencia sobre as plantas. A faixa ideal para a cultura e de 20 a 26 °C, sendo que superiores a 30 °C prejudicam o florescimento e acima de 35 °C, praticamente, o paralisam. Variacoes de temperatura podem afetar a ocorrencia de doencas e de insetos no ambiente. As casas-de-vegetacao apresentam temperatura media mais elevada em relacao a temperatura externa em decorrencia de sua cobertura, o que tambem afeta a temperatura do meio radicular. Dessa forma, cuidados devem ser tomados para que a temperatura nao alcance valores que prejudiquem o desenvolvimento da planta. Objetivou-se avaliar a variacao da temperatura no cultivo do morangueiro em calhas de madeira sob casa-de-vegetacao. Utilizou-se a cult...
Insects, 2021
Lycoriella species (Sciaridae) are responsible for significant economic losses in greenhouse prod... more Lycoriella species (Sciaridae) are responsible for significant economic losses in greenhouse production (e.g., mushrooms, strawberries, and nurseries). The current distributions of species in the genus are restricted to cold-climate countries. Three species of Lycoriella are of particular economic concern in view of their ability to invade areas in countries across the Northern Hemisphere. We used ecological niche models to determine the potential for range expansion under future climate change scenarios (RCP 4.5 and RCP 8.5) in the distribution of these three species of Lycoriella. Stable environmental suitability under climate change was a dominant theme in these species; however, potential range increases were noted in key countries (e.g., USA, Brazil, and China). Our results illustrate the potential for range expansion in these species in the Southern Hemisphere, including some of the highest greenhouse production areas in the world.
Experimental and Applied Acarology, 2020
Tetranychus urticae is the main pest of strawberry crops and can cause up to 80% of productivity ... more Tetranychus urticae is the main pest of strawberry crops and can cause up to 80% of productivity losses under high infestations. Aiming to search T. urticae management alternatives compatible with eco-friendly or organic-based food production systems, this study evaluated the lethal and sublethal toxicities of formulated derivatives from Annonaceae (rich in acetogenins) against this pest species. In addition, it also evaluated the selectivity of the most promising formulation to the predatory mites Neoseiulus californicus and Phytoseiulus macropilis, which are largely applied in biological control in Brazil. Among the derivatives tested, the emulsion from the ethanolic seed extract of Annona mucosa-ESEAm (major component: acetogenin bis-tetrahydrofuran rolliniastatin-1) caused pronounced mortality of T. urticae after 120 h of exposure (LC 50 = 465.5 mg L −1), in a comparable or superior manner to an abamectin-based synthetic acaricide used as positive control (LC 50 = 1243.4 mg L −1). Moreover, ESEAm exposure resulted in a significant decrease in the number of eggs laid by females and caused the most pronounced ovicidal action for T. urticae, with only 5% embryonic viability. However, ESEAm also showed high toxicity to the predatory mites tested, causing 100% mortality for both species after 120 h exposure, similar to abamectin. The interaction between these bioacaricides and biological control agents should be tested under field conditions to further assess the potential ecological selectivity of these derivatives.
International Journal of Tropical Insect Science, 2020
The scatopsid fly Coboldia fuscipes (Meigen, 1830) (Diptera, Scatopsidae) is reported for the fir... more The scatopsid fly Coboldia fuscipes (Meigen, 1830) (Diptera, Scatopsidae) is reported for the first time as a mushroom pest in South America. The fly was found in massive populations inside a mushroom growing facility in southern Brazil. Larvae caused severe damage to the mycelia of various species of Pleurotus mushroom and prevented the development of fruit bodies, causing total loss to the producers. This exotic species had never been considered a pest in South America. Coboldia fuscipes is a particularly invasive pest and it represents a potential threat to mushroom producers. Management practices are discussed in order to avoid economic losses for the producers.
Ecotoxicology, 2020
Stratiolaelaps scimitus (Womersley) and Cosmolaelaps brevistilis (Karg) (Acari: Laelapidae) are p... more Stratiolaelaps scimitus (Womersley) and Cosmolaelaps brevistilis (Karg) (Acari: Laelapidae) are predatory mites of soilinhabiting pests, mainly small insects. Fungus gnats fly species are found in greenhouse strawberry production and may be controlled with predatory mites, being important to know their compatibility with the pesticides used in strawberry crops. In this study, the compatibility of seven commercial pesticides used in strawberry cultivation with the predatory mites S. scimitus and C. brevistilis was assessed in laboratory conditions. Survival and oviposition rates were evaluated between 0.5 and 120 h after treatment (HAT). The results demonstrate that lambda-cyhalothrin treatment resulted in the lowest survival rate for both mites in the first evaluations, being moderately harmful, while spinetoran was slightly harmful to C. brevistilis. On the other hand, abamectin, azadirachtin, azoxystrobin + difenoconazole, iprodione and thiamethoxam were harmless for both mites and, oviposition rate was significantly different only at 72 and 120 HAT for S. scimitus and C. brevistilis respectively. These results may be used to develop guidelines for the adoption of selective pesticides in integrated pest management programs that conserves predatory mites.
Experimental & applied acarology, 2018
Soils are often complex habitats inhabited by a wide range of organisms, some harmful to plants a... more Soils are often complex habitats inhabited by a wide range of organisms, some harmful to plants and others beneficial, for example by attacking harmful organisms. Beneficial organisms include predatory mites, some of which have been commercialized for biological control of pest insects and mites. The objective of this work was to evaluate under laboratory condition the suitability of representative soil insect and mite pests, especially Aceria tulipae (Keifer), as prey to the soil-inhabiting predatory mites Proctolaelaps bickleyi (Bram) and Cosmolaelaps brevistilis (Karg). Predation, oviposition and survivorship of recently molted adult females of the predators were assessed in the dark in rearing chambers at 25 ± 1 °C and 75 ± 3% RH. Predation rate by P. bickleyi on A. tulipae was significantly higher than that by C. brevistilis (196.3 vs. 71.0 specimens/day). About 482 A. tulipae were preyed by each P. bickleyi at each day, when 500 A. tulipae were made available daily to the pred...
Zootaxa, 2017
Three Cosmolaelaps species were found in surveys recently conducted in the Pampa biome in souther... more Three Cosmolaelaps species were found in surveys recently conducted in the Pampa biome in southern Brazil. One of these is a new species here described as Cosmolaelaps pampaensis sp. nov. In the same surveys, heteromorphic male specimens of Cosmolaelaps guttulatus (Karg, 1978) were collected. A key for the identification of species of Cosmolaelaps reported from Brazil is provided.
Revista Brasileira de Fruticultura, 2017
Two-spotted spider mite, Tetranychus urticae Koch, is considered the main pest in strawberry crop... more Two-spotted spider mite, Tetranychus urticae Koch, is considered the main pest in strawberry crop. The control of this species is hampered by the low efficiency of products currently used, occurrence of populations resistant to acaricides and high reproductive potential of this pest. This leads to the use of pesticides and increased agrochemical residues in fruits. The use of resistant cultivars is considered the ideal control method because they maintain mite populations below levels of economic damage, minimize the environmental impact of pesticides at no extra cost to the farmer, and serve as an auxiliary tool in integrated pest management. In this sense, this study evaluated the resistance of strawberry cultivars to T. urticae by studying the development of its biological aspects. Comparative biology experiments and non-preference tests for feeding and oviposition for spider mite were carried out in 16 strawberry cultivars under laboratory conditions. Based on results, it was fo...
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Papers by Adriane Fonseca Duarte