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Toledo PFS, da Cruz Araujo SH, Mantilla Afanador JG, Silva ACF, Machado FP, Rocha LM, Oliveira EE. Potential of Ocotea indecora Essential Oil for Controlling Drosophila suzukii: Molecular Predictions for Toxicity and Selectivity to Beneficial Arthropods. NEOTROPICAL ENTOMOLOGY 2024; 53:189-199. [PMID: 38170367 DOI: 10.1007/s13744-023-01109-2] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/24/2023] [Accepted: 11/23/2023] [Indexed: 01/05/2024]
Abstract
The protection of soft-skinned fruits against Drosophila suzukii has relied primarily on the efficacy of a few synthetic molecules. Despite their short-term efficacy, these molecules can cause environmental pollution, unintendedly affect non-target organisms, and fail to provide sustainable control. The shortfalls of using synthetic pesticides warrant the search for alternatives, such as essential oils extracted from plants, with greater eco-friendlier properties. Here, we chemically characterized and evaluated the toxicity of the essential oil extracted from leaves of Ocotea indecora (Schott) Mez (Lauraceae) against D. suzukii via two exposure pathways (ingestion and contact). We also assessed the selectivity of the essential oil to two predatory natural enemies, Eriopis connexa and Chrysoperla externa and two pollinator bees, Apis mellifera and Partamona helleri. In addition, we conducted in silico predictions to investigate potential interactions between the major compound of the essential oil and the insects' transient receptor potential (TRP) channels. Our chromatographic analysis revealed sesquirosefuran (87%) as the major compound. Higher toxicity to adults of D. suzukii was observed in contact exposure (LC50 = 0.43 μL mL-1) compared to ingestion (LC50 = 0.72 μL mL-1). However, the essential oil did not cause mortality to the non-target organisms tested here, even when applied at 2.20 μL mL-1. Molecular predictions demonstrated that sesquirosefuran binds more stably to the TRP channels of D. suzukii than to those expressed in beneficial arthropods. Collectively, our findings provide the initial framework for the potential use of O. indecora essential oil as a sustainable alternative for managing D. suzukii infestations.
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Affiliation(s)
- Pedro F S Toledo
- Departamento de Entomologia, Universidade Federal de Viçosa, Viçosa, Minas Gerais, Brazil
- Department of Entomology, University of Georgia, Tifton, GA, USA
| | - Sabrina Helena da Cruz Araujo
- Departamento de Entomologia, Universidade Federal de Viçosa, Viçosa, Minas Gerais, Brazil.
- Programa de Pós-Graduação em Ciências Florestais e Ambientais, Universidade Do Federal Do Tocantins, Gurupi, Tocantins, Brazil.
| | | | | | - Francisco Paiva Machado
- Laboratório de Tecnologia de Produtos Naturais, Departamento de Tecnologia Farmacêutica, Universidade Federal Fluminense, Rio de Janeiro, Niterói, Brazil
- Departamento de Farmácia e Administração Farmacêutica, Universidade Federal Fluminense, Rio de Janeiro, Niterói, Brazil
| | - Leandro M Rocha
- Laboratório de Tecnologia de Produtos Naturais, Departamento de Tecnologia Farmacêutica, Universidade Federal Fluminense, Rio de Janeiro, Niterói, Brazil
| | - Eugênio E Oliveira
- Departamento de Entomologia, Universidade Federal de Viçosa, Viçosa, Minas Gerais, Brazil.
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Garcia FRM, Oliveira EE. Potential Ecological Interactions and Challenges for the Management of Spotted-Wing Drosophila in Recently Invaded Regions. NEOTROPICAL ENTOMOLOGY 2024; 53:186-188. [PMID: 38381259 DOI: 10.1007/s13744-024-01138-5] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 02/22/2024]
Affiliation(s)
- Flávio Roberto Mello Garcia
- Departamento de Ecologia, Zoologia E Genética, Instituto de Biologia, Universidade Federal de Pelotas (UFPel), Pelotas, Rio Grande do Sul, Brazil.
| | - Eugenio Eduardo Oliveira
- Departamento de Entomologia, Universidade Federal de Viçosa (UFV), Viçosa, Minas Gerais, Brazil.
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Dos Santos VF, Abeijon LM, da Cruz Araújo SH, Garcia FRM, de Oliveira EE. The Potential of Plant-Based Biorational Products for the Drosophila suzukii Control: Current Status, Opportunities, and Limitations. NEOTROPICAL ENTOMOLOGY 2024; 53:236-243. [PMID: 38133734 DOI: 10.1007/s13744-023-01119-0] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/31/2023] [Accepted: 12/13/2023] [Indexed: 12/23/2023]
Abstract
Drosophila suzukii (Matsumura) (Diptera: Drosophilidae) is an invasive species that causes serious damage to soft-skinned fruits. The use of plant-based biorational insecticides (plant extracts and essential oils) to control this pest has grown extensively. We conducted a systematic review and meta-analysis to examine the current status, trends, and perspectives of these studies, with a focus on the plant families and major compounds used as insecticides to control D. suzukii. The first article in this research field was published in 2015, and there has been exponential growth in subsequent years. Thirty-six botanical families were studied in these articles, with a prevalent interest in Myrtaceae and Lamiaceae plant species. The major constituents of these plant-based biorational molecules belong to monoterpenoids, followed by monoterpenes, benzene derivatives, and others. Geranial was the most frequent major constituent of these plant-based compounds. Our analysis revealed a few crucial consequences of the bias provided by the investigations using plant-based biorational insecticides for controlling D. suzukii. Firstly, there is a major focus on the pest species, with little or no attention paid to undesired effects on non-target beneficial organisms (e.g., pollinator bees, predators; parasitoids) and non-target pests. Secondly, the poor knowledge of how these plant-based biorational insecticides act on target and non-target organisms. Finally, there is a need to assess the efficacy of these substances under field conditions. Thus, attention is needed to address these gaps so that plant-based biorational insecticides can become a viable pest management tool for controlling D. suzukii.
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Affiliation(s)
| | - Lenon Morales Abeijon
- Department of Ecology, Zoology and Genetics, Federal University of Pelotas, Pelotas, Rio Grande Do Sul, Brazil
| | | | - Flávio Roberto Mello Garcia
- Department of Ecology, Zoology and Genetics, Federal University of Pelotas, Pelotas, Rio Grande Do Sul, Brazil
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Mantilla Afanador JG, Araujo SHC, Teixeira MG, Lopes DT, Cerceau CI, Andreazza F, Oliveira DC, Bernardi D, Moura WS, Aguiar RWS, Oliveira ACSS, Santos GR, Alvarenga ES, Oliveira EE. Novel Lactone-Based Insecticides and Drosophila suzukii Management: Synthesis, Potential Action Mechanisms and Selectivity for Non-Target Parasitoids. INSECTS 2023; 14:697. [PMID: 37623407 PMCID: PMC10455539 DOI: 10.3390/insects14080697] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/14/2023] [Revised: 07/28/2023] [Accepted: 08/06/2023] [Indexed: 08/26/2023]
Abstract
Drosophila suzukii, an invasive insect pest, poses a significant threat to various fruit crops. The use of broad-spectrum insecticides to control this pest can reduce the effectiveness of biological control agents, such as the parasitoid Trichopria anastrephae. Here, we evaluated the toxicity of newly synthesized lactone derivatives on D. suzukii and their selectivity towards T. anastrephae. We used in silico approaches to identify potential targets from the most promising molecules in the D. suzukii nervous system and to understand potential differences in susceptibilities between D. suzukii and its parasitoid. Of the nine molecules tested, (rac)-8 and compound 4 demonstrated efficacy against the fly. Exposure to the estimated LC90 of (rac)-8 and compound 4 resulted in a mortality rate of less than 20% for T. anastrephae without impairing the parasitoid's functional parasitism. The in silico predictions suggest that (rac)-8 and compound 4 target gamma amino butyric acid (GABA) receptors and transient receptor potential (TRP) channels of D. suzukii. However, only the reduced interaction with TRP channels in T. anastrephae demonstrated a potential reason for the selectivity of these compounds on the parasitoid. Our findings suggest the potential for integrating (rac)-8 and compound 4 into D. suzukii management practices.
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Affiliation(s)
- Javier G. Mantilla Afanador
- Research Institute in Microbiology and Agroindustrial Biotechnology, Universidad Católica de Manizales, Carrera 23, 60–63, Manizales 170002, Colombia;
| | - Sabrina H. C. Araujo
- Departamento de Entomologia, Universidade Federal de Viçosa (UFV), Viçosa 36570-900, MG, Brazil;
| | - Milena G. Teixeira
- Departamento de Química, Universidade Federal de Viçosa (UFV), Viçosa 36570-900, MG, Brazil (E.S.A.)
| | - Dayane T. Lopes
- Departamento de Química, Universidade Federal de Viçosa (UFV), Viçosa 36570-900, MG, Brazil (E.S.A.)
| | - Cristiane I. Cerceau
- Departamento de Química, Universidade Federal de Viçosa (UFV), Viçosa 36570-900, MG, Brazil (E.S.A.)
| | - Felipe Andreazza
- Departamento de Entomologia, Universidade Federal de Viçosa (UFV), Viçosa 36570-900, MG, Brazil;
| | - Daiana C. Oliveira
- Department of Plant Protection, Federal University of Pelotas, Pelotas, Mailbox 354, Capão-do-Leão 96010-900, RS, Brazil (D.B.)
| | - Daniel Bernardi
- Department of Plant Protection, Federal University of Pelotas, Pelotas, Mailbox 354, Capão-do-Leão 96010-900, RS, Brazil (D.B.)
| | - Wellington S. Moura
- Programa de Pós-Graduação em Biodiversidade e Biotecnologia—Rede Bionorte, Universidade Federal do Tocantins (UFT), Gurupi 77402-970, TO, Brazil
| | - Raimundo W. S. Aguiar
- Programa de Pós-Graduação em Biotecnologia, Universidade Federal do Tocantins (UFT), Gurupi 77402-970, TO, Brazil; (R.W.S.A.); (G.R.S.)
| | - Ana C. S. S. Oliveira
- Programa de Pós-Graduação em Biotecnologia, Universidade Federal do Tocantins (UFT), Gurupi 77402-970, TO, Brazil; (R.W.S.A.); (G.R.S.)
| | - Gil R. Santos
- Programa de Pós-Graduação em Biotecnologia, Universidade Federal do Tocantins (UFT), Gurupi 77402-970, TO, Brazil; (R.W.S.A.); (G.R.S.)
| | - Elson S. Alvarenga
- Departamento de Química, Universidade Federal de Viçosa (UFV), Viçosa 36570-900, MG, Brazil (E.S.A.)
| | - Eugenio E. Oliveira
- Departamento de Entomologia, Universidade Federal de Viçosa (UFV), Viçosa 36570-900, MG, Brazil;
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SANZ-VEIGA PRISCILAA, SAVARIS MARCOANDRE, LEIVAS FERNANDOWT, DA SILVA MEDEIROS ALEXANDRE, AMORIM FELIPEW. A new seed-feeding species of Hemicolpus Heller, 1895 from south Brazil and redescription of Hemicolpus abdominalis Hustache, 1938 (Coleoptera: Curculionidae: Conoderinae). Zootaxa 2023; 5227:301-327. [PMID: 37044688 DOI: 10.11646/zootaxa.5227.3.1] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/05/2023] [Indexed: 01/07/2023]
Abstract
The genus Hemicolpus Heller, 1895 (Curculionidae: Conoderinae) currently includes six species: H. cubicus (Lacordaire) (Brazil); H. heteromorphus Hustache (Brazil); H. abdominalis Hustache (Bolivia, Brazil, and Paraguay); H. costaricensis Hespenheide (Costa Rica); H. randiae Hespenheide (El Salvador and Mexico) and H. prenai Hespenheide (El Salvador and Mexico). The known species are predispersal seed predators whose larvae feed and develop within fruits of Rubiaceae. Species from Central America have been reared from the fruits of Randia L. (Rubiaceae). In contrast, the only host plant known for the South American species, H. abdominalis, is Tocoyena formosa (Cham. & Schltdl.) K. Schum. (Rubiaceae), a plant species widely distributed in the Cerrado biome, occurring from southeast to north and northeast of Brazil. Here, we describe a seventh species of Hemicolpus, H. maragatensis Sanz-Veiga, Savaris & Leivas, sp. nov., morphologically close to H. abdominalis, associated with fruits of Randia ferox (Cham. & Schltdl.) DC. in the south of Brazil. Furthermore, we designate a lectotype and provide a redescription of H. abdominalis, including additional characters to differentiate it from H. maragatensis. For both species, we provide morphological descriptions of external and internal characters, including male and female genitalia illustrations, distribution data, and notes on the biology and host plant. A barcode region of the mitochondrial DNA is also included for both species adding genetic information to the species characterization and differentiation. We also provide an identification key for the species of the genus.
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Garcia FRM, Lasa R, Funes CF, Buzzetti K. Drosophila suzukii Management in Latin America: Current Status and Perspectives. JOURNAL OF ECONOMIC ENTOMOLOGY 2022; 115:1008-1023. [PMID: 35595171 DOI: 10.1093/jee/toac052] [Citation(s) in RCA: 25] [Impact Index Per Article: 12.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/05/2021] [Indexed: 05/17/2023]
Abstract
Spotted-wing drosophila, Drosophila suzukii Matsumura, was first established in Latin America in Mexico in 2011. The vinegar fly has since been detected in 296 municipalities in Argentina, Brazil, Chile, Mexico, and Uruguay. Drosophila suzukii is polyphagous and is found on 64 host plants in 25 families in Latin America, with most hosts also exotic species. In Latin America, D. suzukii is attacked by 14 species of parasitoid wasps in the families Diapriidae, Figitidae, and Pteromalidae, which are promising native parasitoids for control of the pest. This article analyzes results from studies on monitoring, biological, chemical, and cultural control, and sterile insect techniques to provide a basis for the development of area-wide and sustainable D. suzukii management programs in Latin America. The review examines how D. suzukii has been managed in Latin America and how research conducted in this region can contribute to management of the species in other parts of the world.
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Affiliation(s)
- Flávio Roberto Mello Garcia
- Universidade Federal de Pelotas, Instituto de Biologia, Departamento de Ecologia, Zoologia e Genética, 96010-900, Pelotas, RS, Brazil
| | - Rodrigo Lasa
- Instituto de Ecología AC, Red de Manejo Biorracional de Plagas y Vectores, 91073 Xalapa, Veracruz, Mexico
| | - Claudia F Funes
- INTA Estación Experimental Agropecuaria Famaillá, Ruta Provincial 301, Km 32, 4132 Famaillá, Tucumán, Argentina
| | - Karina Buzzetti
- Consultora AgriDevelopment Ltda, Napoleón 3565 of 202, 7550219, Las Condes, Chile
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Morais MC, Rakes M, Padilha AC, Grützmacher AD, Nava DE, Bernardi O, Bernardi D. Susceptibility of Brazilian Populations of Anastrepha fraterculus, Ceratitis capitata (Diptera: Tephritidae), and Drosophila suzukii (Diptera: Drosophilidae) to Selected Insecticides. JOURNAL OF ECONOMIC ENTOMOLOGY 2021; 114:1291-1297. [PMID: 33769485 DOI: 10.1093/jee/toab050] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/26/2021] [Indexed: 06/12/2023]
Abstract
Anastrepha fraterculus (Wiedemann), Ceratitis capitata (Wiedemann), and Drosophila suzukii (Matsumura) are the main fruit pests in Brazil. Here, we evaluated the susceptibility of Brazilian populations of A. fraterculus, C. capitata, and D. suzukii to selected insecticides. In ingestion bioassays, adults from a laboratory susceptible population of each species were exposed to five different modes of action of insecticide. Then, field populations of each species were exposed to the diagnostic concentrations to evaluate possible changes in susceptibility. Our findings indicate that lambda-cyhalothrin, malathion, and spinosad had similar levels of toxicity against a susceptible laboratory population of A. fraterculus, with LC50 values of 6.34, 6.54, and 8.76 µg a.i./ml, respectively. Ceratitis capitata had similar susceptibilities to spinosad (1.30 µg a.i./ml), spinetoram (2.76 µg a.i./ml), and malathion (7.10 µg a.i./ml), but a lower susceptibility to lambda-cyhalothrin (76.55 µg a.i./ml). For D. suzukii, the LC50 values of deltamethrin (0.67 µg a.i./ml), malathion (3.30 µg a.i./mL), spinosad (4.16 µg a.i./ml), and spinetoram (4.75 µg a.i./ml) were lower than for abamectin (15.02 µg a.i./ml), acetamiprid (39.38 a.i./ml), and thiamethoxam (70.15 µg a.i./ml). The diagnostic concentrations, based on LC99 values of the insecticides, caused more than 99% mortality for most field populations of each species. For lambda-cyhalothrin the populations RS-1 (A. fraterculus) and SC (C. capitata) showed approximately 10% of live insects. These differences represent the natural variation in population susceptibility and not due to insecticide selection pressure. The diagnostic concentrations defined here should be used in future resistance monitoring programs in Brazil.
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Affiliation(s)
- Maíra C Morais
- Department of Plant Protection, Federal University of Pelotas, Faculty of Agronomy, Pelotas, Rio Grande do Sul, 96160-000, Brazil
| | - Matheus Rakes
- Department of Plant Protection, Federal University of Pelotas, Faculty of Agronomy, Pelotas, Rio Grande do Sul, 96160-000, Brazil
| | - Aline C Padilha
- Department of Plant Protection, Federal University of Pelotas, Faculty of Agronomy, Pelotas, Rio Grande do Sul, 96160-000, Brazil
| | - Anderson D Grützmacher
- Department of Plant Protection, Federal University of Pelotas, Faculty of Agronomy, Pelotas, Rio Grande do Sul, 96160-000, Brazil
| | - Dori E Nava
- Embrapa Clima Temperado, BR-392, Km 78, Pelotas, Rio Grande do Sul, 96010-971, Brazil
| | - Oderlei Bernardi
- Department of Plant Protection, Federal University of Santa Maria, Roraima Avenue 1000, Santa Maria, Rio Grande do Sul, 97105-900, Brazil
| | - Daniel Bernardi
- Department of Plant Protection, Federal University of Pelotas, Faculty of Agronomy, Pelotas, Rio Grande do Sul, 96160-000, Brazil
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Santos FA, Correa AS, Nanini F, Nascimento DA, Junqueira LR, Wilcken CF. Genetic diversity of Glycaspis brimblecombei (Hemiptera: Aphalaridae) and its parasitoid Psyllaephagus bliteus (Hymenoptera: Encyrtidae) in Brazil. BRAZ J BIOL 2021; 81:838-841. [PMID: 32876174 DOI: 10.1590/1519-6984.230486] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/28/2019] [Accepted: 02/14/2020] [Indexed: 11/21/2022] Open
Affiliation(s)
- F A Santos
- Universidade Estadual Paulista - UNESP, Faculdade de Ciências Agronômicas - FCA, Botucatu, SP, Brasil
| | - A S Correa
- Universidade de São Paulo - USP, Escola Superior de Agricultura "Luiz de Queiroz" - ESALQ, Piracicaba, SP, Brasil
| | - F Nanini
- Universidade de São Paulo - USP, Escola Superior de Agricultura "Luiz de Queiroz" - ESALQ, Piracicaba, SP, Brasil
| | - D A Nascimento
- Universidade Estadual Paulista - UNESP, Faculdade de Ciências Agronômicas - FCA, Botucatu, SP, Brasil
| | - L R Junqueira
- Instituto de Pesquisas e Estudos Florestais - IPEF, Piracicaba, SP, Brasil
| | - C F Wilcken
- Universidade Estadual Paulista - UNESP, Faculdade de Ciências Agronômicas - FCA, Botucatu, SP, Brasil
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Mendonca LDP, Oliveira EE, Andreazza F, Rezende SM, Faroni LRD, Guedes RNC, Haddi K. Host Potential and Adaptive Responses of Drosophila suzukii (Diptera: Drosophilidae) to Barbados Cherries. JOURNAL OF ECONOMIC ENTOMOLOGY 2019; 112:3002-3006. [PMID: 31289814 DOI: 10.1093/jee/toz195] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/30/2019] [Indexed: 06/09/2023]
Abstract
Biological invasions are a global threat to agricultural crops worldwide. In the Neotropical region, the spotted-wing Drosophila [Drosophila suzukii (Matsumura)] has rapidly expanded its geographical range spreading throughout South America in recent years. Besides climatic factors, the remarkable success of its establishment and subsequent distribution in this region is closely dependent on the diversity and availability of host plants. We evaluated the host potential (e.g., as food and oviposition sources) of fruits of jabuticaba [Plinia cauliflora (Mart.) Kausel (Myrtales: Myrtaceae)], Barbados cherry (Malpighia emarginata DC) (Malpighiales: Malpighiaceae), bonnet pepper (Capsicum chinense Jacq.) (Solanales : Solanaceae), and coffee (Coffea arabica L.) (Gentianales : Rubiaceae) and their effects on the biological and physiological traits of D. suzukii. For the fruit types where fly emergence occurred, we assessed the biological and physiological performance of the flies and compared these parameters with those recorded for flies reared on strawberries (Fragaria × ananassa Duchesne) (Rosales : Rosaceae) and an artificial diet. Our results revealed that oviposition into fruits and completion of the life cycle occurred on Barbados cherries only. Furthermore, field surveys revealed a higher emergence rate of D. suzukii on undamaged ripe Barbados cherries than damaged ones. Moreover, flies developing on Barbados cherries and an artificial diet presented earlier emergence, shorter developmental time, lower number of adults per female, and a female-biased sex ratio compared to flies developing on strawberries. Overall, our findings demonstrated suitability of Barbados cherry as a host for D. suzukii, which renders management of D. suzukii in Neotropical region an even more challenging task.
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Affiliation(s)
| | | | - Felipe Andreazza
- Department of Entomology, Universidade Federal de Viçosa, Viçosa, MG, Brazil
- Department of Entomology, Michigan State University, East Lansing, MI
| | | | | | | | - Khalid Haddi
- Department of Entomology, Universidade Federal de Viçosa, Viçosa, MG, Brazil
- Department of Entomology, Universidade Federal de Lavras, Lavras, MG, Brazil
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Nanini F, Maggio DH, Ferronato P, Rugno G, Yamamoto PT, Corrêa AS. Molecular Marker to Identify Diaphorina citri (Hemiptera: Liviidae) DNA in Gut Content of Predators. NEOTROPICAL ENTOMOLOGY 2019; 48:927-933. [PMID: 31707596 DOI: 10.1007/s13744-019-00721-5] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/25/2019] [Accepted: 09/22/2019] [Indexed: 06/10/2023]
Abstract
Diaphorina citri Kuwayama is the vector of the pathogenic bacteria Candidatus Liberibacter spp., the causative agent of Huanglongbing (HLB), the most serious disease of citrus worldwide. Because predatory insects have been historically neglected in biological control programs for D. citri, the impact of generalist predators on D. citri population densities is little understood. A useful tool to evaluate the dynamics of predator-prey interactions is molecular analysis of predators' gut content. We constructed a specific molecular marker to detect D. citri DNA in the gut content of predator insects, for use in estimating the predation rate of field-collected predators in citrus orchards on D. citri. Bioassays of the DNA half-life detection time were carried out with two predatory species, the ladybird beetle Hippodamia convergens Guérin-Méneville and the lacewing Chrysoperla externa (Hagen). The D. citri DNA half-life detection time (DT50) was 6.11 h for H. convergens and 5.46 h for C. externa. One hundred and seven field-collected predators were used for gut-content analysis (52 larvae/adults of ladybirds and 55 larvae of lacewings). The assays showed that 17.3% of ladybirds but no lacewings tested positive for D. citri DNA. These results show that generalist predators can contribute to biological control of D. citri and should be considered for use in pest management programs in citrus orchards.
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Affiliation(s)
- F Nanini
- Depto de Entomologia e Acarologia, ESALQ - Univ de São Paulo, Piracicaba, SP 13418-900, Brasil
| | - D H Maggio
- Depto de Entomologia e Acarologia, ESALQ - Univ de São Paulo, Piracicaba, SP 13418-900, Brasil
| | - P Ferronato
- Depto de Entomologia e Acarologia, ESALQ - Univ de São Paulo, Piracicaba, SP 13418-900, Brasil
| | - G Rugno
- Depto de Entomologia e Acarologia, ESALQ - Univ de São Paulo, Piracicaba, SP 13418-900, Brasil
| | - P T Yamamoto
- Depto de Entomologia e Acarologia, ESALQ - Univ de São Paulo, Piracicaba, SP 13418-900, Brasil
| | - A S Corrêa
- Depto de Entomologia e Acarologia, ESALQ - Univ de São Paulo, Piracicaba, SP 13418-900, Brasil.
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Ma J, Liu J, Shen Y, Fan Z, Yue B, Zhang X. Population genetic structure and intraspecific genetic distance of Periplaneta americana (Blattodea: Blattidae) based on mitochondrial and nuclear DNA markers. Ecol Evol 2019; 9:12928-12939. [PMID: 31788226 PMCID: PMC6876684 DOI: 10.1002/ece3.5777] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/18/2019] [Revised: 10/01/2019] [Accepted: 10/02/2019] [Indexed: 11/06/2022] Open
Abstract
The American cockroach (Periplaneta americana) is a globally invasive pest that can cause significant economic loss and threaten human health. Although it is abundant and lives in close proximity to humans, few studies have investigated the genetic diversity of P. americana. Our study analyzed 1,053 P. americana and other Periplaneta species' samples from different locations in China and the United States. A traditional tree-based method using 17 unique mitochondrial COI haplotypes of P. americana and 20 haplotypes of the other Periplaneta species accurately identified P. americana with a barcoding threshold of 5.1%. To identify the population genetic structure of P. americana, we investigated wingless gene and pooled them with obtained mtDNA data for a combined analysis. Although the genetic diversity of the USA group was relatively higher than the China group, the number of haplotypes and alleles of both groups was small. The analysis of molecular variance (AMOVA), intraspecific phylogeny, and haplotype networks indicated that P. americana had very little global genetic differentiation. The weak geographic genetic structure might reflect the human-mediated dispersal of P. americana. Despite no apparent phylogeographic assignment of mtDNA and nuclear lineages was observed in both BI trees, the integrated COI sequence data identified four distinct P. americana haplotype groups, showing four ancient maternal lineages of P. americana in China and the United States.
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Affiliation(s)
- Jinnan Ma
- Key Laboratory of Bio‐resources and Eco‐environmentMinistry of EducationCollege of Life SciencesSichuan UniversityChengduChina
| | - Jinhua Liu
- Sichuan Key Laboratory of Conservation Biology on Endangered WildlifeCollege of Life SciencesSichuan UniversityChengduChina
| | - Yongmei Shen
- Sichuan Key Laboratory of Medicinal American CockroachSichuan Gooddoctor Pharmaceutical GroupChengduChina
| | - Zhenxin Fan
- Key Laboratory of Bio‐resources and Eco‐environmentMinistry of EducationCollege of Life SciencesSichuan UniversityChengduChina
- Sichuan Key Laboratory of Conservation Biology on Endangered WildlifeCollege of Life SciencesSichuan UniversityChengduChina
| | - Bisong Yue
- Key Laboratory of Bio‐resources and Eco‐environmentMinistry of EducationCollege of Life SciencesSichuan UniversityChengduChina
- Sichuan Key Laboratory of Conservation Biology on Endangered WildlifeCollege of Life SciencesSichuan UniversityChengduChina
| | - Xiuyue Zhang
- Key Laboratory of Bio‐resources and Eco‐environmentMinistry of EducationCollege of Life SciencesSichuan UniversityChengduChina
- Sichuan Key Laboratory of Conservation Biology on Endangered WildlifeCollege of Life SciencesSichuan UniversityChengduChina
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