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Castro-Saines E, Lagunes-Quintanilla R, Hernández-Ortiz R. Microbial agents for the control of ticks Rhipicephalus microplus. Parasitol Res 2024; 123:275. [PMID: 39017922 DOI: 10.1007/s00436-024-08291-1] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/02/2024] [Accepted: 07/07/2024] [Indexed: 07/18/2024]
Abstract
Ticks are ectoparasites responsible for the transmission of various pathogens to vertebrates. They represent one of the major threats to livestock production worldwide due to their impact on the health, production and welfare of livestock destined for human consumption. The development of resistance to the main families of ixodicides used for their control has led to the search for new alternatives, where microbial control is an option. The use of microbial control agents against the tick Rhipicephalus microplus is reviewed in this paper. Bacteria such as Bacillus thuringiensis, Serratia marcescens and Staphylococcus spp. the nematodes Steinernema spp. and Heterorhabditis spp. as well as the fungi Metarhizium anisopliae and Beauveria bassiana are the most studied organisms for use as biological control agents against ticks. Laboratory, stable and field trials with free-living and parasitised ticks have shown that microbial agents can control both susceptible and ixodicide-resistant tick populations. However, multidisciplinary studies using novel tools like genomics, transcriptomics and proteomics should be carried out to understand the virulence factors which microbial agents use to induce pathogenesis and virulence in ticks. In addition, applied research will be carried out with the aim of improving techniques for large-scale application, as well as the improvement of cultivation, storage, formulation and application methods.
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Affiliation(s)
- Edgar Castro-Saines
- Centro Nacional de Investigación Disciplinaria en Salud Animal E Inocuidad, Instituto Nacional de Investigaciones Forestales Agrícolas y Pecuarias, Carretera Federal Cuernavaca-Cuautla 8534, Colonia Progreso, Jiutepec, Morelos, CP 62550, México.
| | - Rodolfo Lagunes-Quintanilla
- Centro Nacional de Investigación Disciplinaria en Salud Animal E Inocuidad, Instituto Nacional de Investigaciones Forestales Agrícolas y Pecuarias, Carretera Federal Cuernavaca-Cuautla 8534, Colonia Progreso, Jiutepec, Morelos, CP 62550, México
| | - Rubén Hernández-Ortiz
- Centro Nacional de Investigación Disciplinaria en Salud Animal E Inocuidad, Instituto Nacional de Investigaciones Forestales Agrícolas y Pecuarias, Carretera Federal Cuernavaca-Cuautla 8534, Colonia Progreso, Jiutepec, Morelos, CP 62550, México
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Klafke GM, Golo PS, Monteiro CMO, Costa-Júnior LM, Reck J. Brazil's battle against Rhipicephalus (Boophilus) microplus ticks: current strategies and future directions. REVISTA BRASILEIRA DE PARASITOLOGIA VETERINARIA = BRAZILIAN JOURNAL OF VETERINARY PARASITOLOGY : ORGAO OFICIAL DO COLEGIO BRASILEIRO DE PARASITOLOGIA VETERINARIA 2024; 33:e001423. [PMID: 38922203 PMCID: PMC11253825 DOI: 10.1590/s1984-29612024026] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/18/2024] [Accepted: 03/26/2024] [Indexed: 06/27/2024]
Abstract
Ticks are parasitic arthropods that cause significant economic losses to livestock production worldwide. Although Rhipicephalus (Boophilus) microplus, the cattle tick, occurs throughout the Brazilian territory, there is no official program to control this tick, which is the vector of tick fever pathogens. We address the situation of R. (B.) microplus resistance to synthetic acaricides in Brazil, including cattle tick management; the status of tick resistance per Brazilian state; the history of resistance occurrence of different acaricides; multiple resistance occurrence; and the main strategies for integrated tick management. Tick control in Brazil is characterized by management errors. Local laboratories affiliated with federal and state research institutions and universities employ the Adult Immersion Test as a primary diagnostic method to assess acaricide resistance to topically applied drugs. Only three states (Acre, Amapá, and Amazonas) have no reports on resistant populations. Misinformation on tick control strategies, misuse of available products for tick control, no adoption of Integrated Parasite Management (IPM) practices, low technical support to producers, and the high-speed emergence of acaricide-resistant tick populations are the main problems. We also propose a list of needs and priorities for cattle tick control regarding communication, research, and policies.
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Affiliation(s)
| | - Patrícia Silva Golo
- Universidade Federal Rural do Rio de Janeiro – UFRRJ, Seropédica, RJ, Brasil
| | | | | | - José Reck
- Instituto de Pesquisas Veterinárias Desidério Finamor – IPVDF, Eldorado do Sul, RS, Brasil
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Morel N, Torrents J, Nava S. Comparative analysis of Rhipicephalus microplus (Canestrini, 1888) infestation in pure breed (Hereford) and cross breed (Braford) cattle herds subjected to the same chemical treatments. EXPERIMENTAL & APPLIED ACAROLOGY 2024; 93:71-79. [PMID: 38811383 DOI: 10.1007/s10493-024-00922-7] [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: 11/29/2023] [Accepted: 05/01/2024] [Indexed: 05/31/2024]
Abstract
The aim of this work was to analyze the R. microplus (Canestrini, 1888) infestation in two bovine herds with different degrees of natural resistance (i.e., Hereford and Braford) to ticks subjected to an identical chemical treatment scheme to ticks at the same farm, to demonstrate the impact on tick control of the incorporation of a more resistant bovine breed. Two groups of ten Hereford and Braford cows each were subjected to eleven chemical treatments between August 2022 and October 2023 (four fluazuron, two fipronil 1%, one ivermectin 3.15% and four immersion in a dipping vat with a combination of cypermethrin 10% and ethion 40%). Tick population was shown to be susceptible to ivermectin, fluazuron and the mix cypermethrin 10%-ethion 40% and resistant to fipronil according to in vitro tests. Tick infestation was significantly greater in the Hereford cows than in the Braford cows. Tick infestation in both Hereford and Braford breeds was similar when treatment with functional drugs was applied, but when a block of the treatments was done with drugs with decreased functionality due to resistance (i.e. fipronil), treatment failure was manifested more strongly in the most susceptible breed. The incorporation of cattle breeds with moderate or high resistance to R. microplus is instrumental to optimize the efficacy and sustainability of chemical control of ticks in a scenario where resistance to one or more chemical groups is almost ubiquitous, because it favors the biological control of this parasite.
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Affiliation(s)
- Nicolas Morel
- Instituto de Investigación de La Cadena Láctea (IDICAL, INTA-CONICET), Instituto Nacional de Tecnología Agropecuaria, Estación Experimental Agropecuaria Rafaela (INTA E.E.A. Rafaela), CC 22, CP 2300, Rafaela, Santa Fe, Argentina
| | - Jorgelina Torrents
- Instituto de Investigación de La Cadena Láctea (IDICAL, INTA-CONICET), Instituto Nacional de Tecnología Agropecuaria, Estación Experimental Agropecuaria Rafaela (INTA E.E.A. Rafaela), CC 22, CP 2300, Rafaela, Santa Fe, Argentina
- Facultad de Ciencias Veterinarias, Universidad Nacional del Litoral, Esperanza, Santa Fe, Argentina
| | - Santiago Nava
- Instituto de Investigación de La Cadena Láctea (IDICAL, INTA-CONICET), Instituto Nacional de Tecnología Agropecuaria, Estación Experimental Agropecuaria Rafaela (INTA E.E.A. Rafaela), CC 22, CP 2300, Rafaela, Santa Fe, Argentina.
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Valcárcel F, Elhachimi L, Vilá M, Tomassone L, Sánchez M, Selles SMA, Kouidri M, González MG, Martín-Hernández R, Valcárcel Á, Fernández N, Tercero JM, Sanchis J, Bellido-Blasco J, González-Coloma A, Olmeda AS. Emerging Hyalomma lusitanicum: From identification to vectorial role and integrated control. MEDICAL AND VETERINARY ENTOMOLOGY 2023; 37:425-459. [PMID: 37144688 DOI: 10.1111/mve.12660] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/26/2022] [Accepted: 04/11/2023] [Indexed: 05/06/2023]
Abstract
In the Mediterranean basin, the tick species Hyalomma lusitanicum Koch stands out among other species of the Hyalomma genus due to its wide distribution, and there is great concern about its potential role as a vector and/or reservoir and its continuous expansion to new areas because of climate warming and human and other animal movements. This review aims to consolidate all the information on H. lusitanicum, including taxonomy and evolution, morphological and molecular identification, life cycle, sampling methods, rearing under laboratory conditions, ecology, hosts, geographical distribution, seasonality, vector role and control methods. The availability of adequate data is extremely relevant to the development of appropriate control strategies in areas where this tick is currently distributed as well as in new areas where it could become established in the near future.
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Affiliation(s)
- Félix Valcárcel
- Grupo de Parasitología Animal, Departamento de Reproducción Animal, INIA-CSIC, Madrid, Spain
| | - L Elhachimi
- Département de parasitologie et de Santé Publique, Institut Agronomique et Vétérinaire Hassan II, Rabat, Morocco
| | - M Vilá
- Grupo de Investigación COPAR (GI-2120; USC), Departamento de Patoloxia Animal, Facultade de Veterinaria, Universidade de Santiago de Compostela, Lugo, Spain
| | - L Tomassone
- Department of Veterinary Sciences, University of Turin, Turin, Italy
| | - M Sánchez
- Grupo de Parasitología Animal, Departamento de Reproducción Animal, INIA-CSIC, Madrid, Spain
- Villamagna S.A., Finca "La Garganta", Villanueva de Córdoba, Spain
- Facultad de Veterinaria, Universidad Alfonso X El Sabio (UAX), Madrid, Spain
| | - S M A Selles
- Institute of Veterinary Sciences, University of Tiaret, Tiaret, Algeria
- Laboratory of Research on Local Animal Products, University of Tiaret, Tiaret, Algeria
| | - M Kouidri
- Laboratory of Farm Animal Products, University of Tiaret, Tiaret, Algeria
| | - M G González
- Grupo de Parasitología Animal, Departamento de Reproducción Animal, INIA-CSIC, Madrid, Spain
- Villamagna S.A., Finca "La Garganta", Villanueva de Córdoba, Spain
| | - R Martín-Hernández
- Laboratorio de Patología Apícola, Centro de Investigación Apícola y Agroambiental (CIAPA), IRIAF-Instituto Regional de Investigación y Desarrollo Agroalimentario y Forestal, Marchamalo, 19180, Spain. Instituto de Recursos Humanos para la Ciencia y la Tecnología (INCRECYT-ESF/EC-FSE), Fundación Parque Científico y Tecnológico de Castilla-La Mancha, Albacete, Spain
| | - Á Valcárcel
- Lokimica S.L., c/ Valdemorillo, Madrid, Spain
- Veterinary Pathobiology section, University College Dublín, Dublin 4, Ireland
| | - N Fernández
- Facultad de Veterinaria, Universidad Alfonso X El Sabio (UAX), Madrid, Spain
| | - J M Tercero
- Villamagna S.A., Finca "La Garganta", Villanueva de Córdoba, Spain
| | - J Sanchis
- Facultad de Veterinaria, CENUR Litoral Norte, Universidad de la República, Uruguay
| | - J Bellido-Blasco
- Sección de Epidemiología, Centro de Salud Pública de Castelló, CIBER-ESP. Universitat Jaume I (UJI), Castelló, Spain
| | | | - A S Olmeda
- Departamento de Sanidad Animal, Facultad de Veterinaria, UCM, Madrid, Spain
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Nicaretta JE, de Melo Junior RD, Naves RB, de Morais IML, Salvador VF, Leal LLLL, Teixeira ALC, Ferreira LL, Klafke GM, Monteiro CMDO, Borges FDA, Costa Junior LM, Rodrigues DS, Lopes WDZ. Selective versus strategic control against Rhipicephalus microplus in cattle: A comparative analysis of efficacy, animal health, productivity, cost, and resistance management. Vet Parasitol 2023; 321:109999. [PMID: 37556962 DOI: 10.1016/j.vetpar.2023.109999] [Citation(s) in RCA: 5] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/02/2023] [Revised: 07/26/2023] [Accepted: 07/27/2023] [Indexed: 08/11/2023]
Abstract
This study compared selective control versus strategic control against Rhipicephalus (Boophilus) microplus, under conditions of a real dairy farm. Strategic control requires that all animals be treated with acaricide at regular pre-determined intervals. Selective control only requires treatment of infested animals and only when they are at or above a pre-determined threshold. Tick counts on animals and in pasture were performed and the susceptibility of tick populations to the different treatment methods was evaluated at the beginning and end of the study using the Larval Packet Test, Larval Immersion Test, and Adult Immersion Test. Over the four years of the study strategic control was more advantageous than the selective control as the group experienced lower tick burden on animals and in pasture, absence of skin lesions and myiases, lower operating costs, treatments concentrated in fewer months of the year and lower resistance pressure.
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Affiliation(s)
- João Eduardo Nicaretta
- Escola de Veterinária e Zootecnia, Universidade Federal de Goiás, Goiânia, Goiás, Brazil
| | | | - Raphaela Barbosa Naves
- Escola de Veterinária e Zootecnia, Universidade Federal de Goiás, Goiânia, Goiás, Brazil
| | | | | | | | | | - Lorena Lopes Ferreira
- Departamento de Medicina Veterinária Preventiva, Escola de Veterinária, Universidade Federal de Minas Gerais, Belo Horizonte, Minas Gerais, Brazil
| | - Guilherme Marcondes Klafke
- Instituto de Pesquisas Veterinárias Desidério Finamor - Centro de Pesquisa em Saúde Animal, Secretaria da Agricultura, Pecuária e Desenvolvimento Rural, Eldorado do Sul, RS, Brazil
| | - Caio Marcio de Oliveira Monteiro
- Escola de Veterinária e Zootecnia, Universidade Federal de Goiás, Goiânia, Goiás, Brazil; Departamento de Biociências e Tecnologia, Instituto de Patologia Tropical e Saúde Pública, Universidade Federal de Goiás, Goiânia, Goiás, Brazil
| | - Fernando de Almeida Borges
- Faculdade de Medicina Veterinária e Zootecnia, Universidade Federal do Mato Grosso do Sul, Campo Grande, Mato Grosso do Sul, Brazil
| | | | - Daniel Sobreira Rodrigues
- Empresa de Pesquisa Agropecuária de Minas Gerais, Campo Experimental Santa Rita, Prudente de Morais, Minas Gerais, Brazil
| | - Welber Daniel Zanetti Lopes
- Escola de Veterinária e Zootecnia, Universidade Federal de Goiás, Goiânia, Goiás, Brazil; Departamento de Biociências e Tecnologia, Instituto de Patologia Tropical e Saúde Pública, Universidade Federal de Goiás, Goiânia, Goiás, Brazil.
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Saciloto-de-Oliveira LR, Broetto L, Alves CI, da Rosa RL, Calegari Alves YP, da Silva RC, Berger M, Macedo AJ, Dalberto PF, Bizarro CV, Guimarães JA, Yates JR, Santi L, Beys-da-Silva WO. Metarhizium anisopliae E6 secretome reveals molecular players in host specificity and toxicity linked to cattle tick infection. Fungal Biol 2023; 127:1136-1145. [PMID: 37495304 PMCID: PMC10394656 DOI: 10.1016/j.funbio.2023.06.006] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/21/2023] [Revised: 06/12/2023] [Accepted: 06/14/2023] [Indexed: 07/28/2023]
Abstract
Although Metarhizium anisopliae is one of the most studied fungal biocontrol agents, its infection mechanism is far from being completely understood. Using multidimensional protein identification technology (MudPIT), we evaluated the differential secretome of M. anisopliae E6 induced by the host Rhipicephalus microplus cuticle. The proteomic result showed changes in the expression of 194 proteins after exposure to host cuticle, such as proteins involved in adhesion, penetration, stress and fungal defense. Further, we performed a comparative genomic distribution of differentially expressed proteins of the M. anisopliae secretome against another arthropod pathogen, using the Beauveria bassiana ARSEF2860 protein repertory. Among 47 analyzed protein families, thirty were overexpressed in the M. anisopliae E6 predicted genome compared to B. bassiana. An in vivo toxicity assay using a Galleria mellonella model confirmed that the M. anisopliae E6 secretome was more toxic in cattle tick infections compared to other secretomes, including B. bassiana with cattle ticks and M. anisopliae E6 with the insect Dysdereus peruvianus, which our proteomic results had also suggested. These results help explain molecular aspects associated with host infection specificity due to genetic differences and gene expression control at the protein level in arthropod-pathogenic fungi.
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Affiliation(s)
| | | | | | - Rafael Lopes da Rosa
- Faculty of Pharmacy, Federal University of Rio Grande do Sul, Brazil; Post-Graduation Program of Cellular and Molecular Biology, Federal University of Rio Grande do Sul, Brazil
| | - Yohana Porto Calegari Alves
- Faculty of Pharmacy, Federal University of Rio Grande do Sul, Brazil; Post-Graduation Program of Cellular and Molecular Biology, Federal University of Rio Grande do Sul, Brazil
| | | | - Markus Berger
- Research of Experimental Center, Clinical Hospital of Porto Alegre, Brazil; Tick-Pathogen Transmission Unit, Laboratory of Bacteriology, National Institute of Allergy and Infectious Diseases, MT, USA
| | - Alexandre José Macedo
- Faculty of Pharmacy, Federal University of Rio Grande do Sul, Brazil; Post-Graduation Program of Cellular and Molecular Biology, Federal University of Rio Grande do Sul, Brazil
| | | | | | | | - John R Yates
- Scripps Research, Department of Molecular Medicine, CA, United States
| | - Lucélia Santi
- Faculty of Pharmacy, Federal University of Rio Grande do Sul, Brazil; Post-Graduation Program of Cellular and Molecular Biology, Federal University of Rio Grande do Sul, Brazil
| | - Walter Orlando Beys-da-Silva
- Faculty of Pharmacy, Federal University of Rio Grande do Sul, Brazil; Post-Graduation Program of Cellular and Molecular Biology, Federal University of Rio Grande do Sul, Brazil.
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Waldman J, Klafke GM, Tirloni L, Logullo C, da Silva Vaz I. Putative target sites in synganglion for novel ixodid tick control strategies. Ticks Tick Borne Dis 2023; 14:102123. [PMID: 36716581 PMCID: PMC10033424 DOI: 10.1016/j.ttbdis.2023.102123] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/28/2022] [Revised: 12/23/2022] [Accepted: 01/07/2023] [Indexed: 01/21/2023]
Abstract
Acaricide resistance is a global problem that has impacts worldwide. Tick populations with broad resistance to all commercially available acaricides have been reported. Since resistance selection in ticks and their role in pathogen transmission to animals and humans result in important economic and public health burden, it is essential to develop new strategies for their control (i.e., novel chemical compounds, vaccines, biological control). The synganglion is the tick central nervous system and it is responsible for synthesizing and releasing signaling molecules with different physiological functions. Synganglion proteins are the targets of the majority of available acaricides. In this review we provide an overview of the mode-of-action and resistance mechanisms against neurotoxic acaricides in ticks, as well as putative target sites in synganglion, as a supporting tool to identify new target proteins and to develop new strategies for tick control.
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Affiliation(s)
- Jéssica Waldman
- Centro de Biotecnologia, Universidade Federal do Rio Grande do Sul, Porto Alegre, RS, Brazil
| | - Guilherme Marcondes Klafke
- Instituto de Pesquisas Veterinárias Desidério Finamor - Centro de Pesquisa em Saúde Animal, Secretaria da Agricultura, Pecuária e Desenvolvimento Rural, Eldorado do Sul, RS, Brazil; Instituto Nacional de Ciência e Tecnologia - Entomologia Molecular, Rio de Janeiro, RJ, Brazil
| | - Lucas Tirloni
- Laboratory of Bacteriology, Tick-Pathogen Transmission Unit, National Institute of Allergy and Infectious Diseases, Hamilton, MT, USA
| | - Carlos Logullo
- Instituto Nacional de Ciência e Tecnologia - Entomologia Molecular, Rio de Janeiro, RJ, Brazil; Laboratório de Bioquímica de Artrópodes Hematófagos, IBqM, Universidade Federal do Rio de Janeiro, Universidade Federal do Rio de Janeiro, Rio de Janeiro, RJ, Brazil
| | - Itabajara da Silva Vaz
- Centro de Biotecnologia, Universidade Federal do Rio Grande do Sul, Porto Alegre, RS, Brazil; Instituto Nacional de Ciência e Tecnologia - Entomologia Molecular, Rio de Janeiro, RJ, Brazil; Faculdade de Veterinária, Universidade Federal do Rio Grande do Sul, Porto Alegre, RS, Brazil.
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Barbieri A, Rico IB, Silveira C, Feltrin C, Dall Agnol B, Schrank A, Lozina L, Klafke GM, Reck J. Field efficacy of Metarhizium anisopliae oil formulations against Rhipicephalus microplus ticks using a cattle spray race. Ticks Tick Borne Dis 2023; 14:102147. [PMID: 36893500 DOI: 10.1016/j.ttbdis.2023.102147] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/16/2022] [Revised: 12/13/2022] [Accepted: 02/12/2023] [Indexed: 03/09/2023]
Abstract
Rhipicephalus microplus tick is the main ectoparasite of cattle in Brazil. The exhaustive use of chemical acaricides to control this tick has favored the selection of resistant tick populations. Entomopathogenic fungi, as Metarhizium anisopliae, has been described as a potential biocontroller of ticks. Therefore, the aim of this study was to evaluate the in vivo efficacy of two oil based formulations of M. anisopliae for the control of the cattle tick R. microplus under field conditions using a cattle spray race as a method of treatment. Initially, in vitro assays were carried out with an aqueous suspension of M. anisopliae, using mineral oil and/or silicon oil. A potential synergism between oils and fungus conidia for tick control was demonstrated. Additionally, the usefulness of silicon oil in order to reduce mineral oil concentration, while improving formulation efficacy was illustrated. Based on the in vitro results, two formulations were selected for use in the field trial: MaO1 (107 conidia/mL plus 5% mineral oil) and MaO2 (107 conidia/mL plus 2.5% mineral oil and 0.01% silicon oil). The adjuvants concentrations (mineral and silicon oils) were chosen since preliminary data indicate that higher concentrations caused significant mortality in adult ticks. For this, 30 naturally infested heifers were divided into three groups based on previous tick counts. The control group did not receive treatment. The selected formulations were applied on animals using a cattle spray race. Subsequently, tick load was evaluated weekly by counting. The MaO1 treatment significantly reduced the tick count only on day +21, reaching approximately 55% efficacy. On the other hand, MaO2 showed significantly lower tick counts on days +7, +14, and +21 after treatment, with weekly efficacy achieving 66%. The results showed a substantial reduction of tick infestation, up to day +28, using a novel formulation of M. anisopliae based in the mixture of two oils. Moreover, we have shown, for the first time, the feasibility of employing formulations of M. anisopliae for large-scale treatment methods, such as a cattle spray race, which in turn, may increase the use and adhesion to biological control tools among farmers.
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Affiliation(s)
- A Barbieri
- Centro de Pesquisa em Saúde Animal, Instituto de Pesquisas Veterinárias Desidério Finamor (IPVDF), Estrada do Conde, 6000, Eldorado do Sul, RS 92990-000, Brazil
| | - I B Rico
- Centro de Pesquisa em Saúde Animal, Instituto de Pesquisas Veterinárias Desidério Finamor (IPVDF), Estrada do Conde, 6000, Eldorado do Sul, RS 92990-000, Brazil
| | | | - C Feltrin
- Fazenda Escola BIOTECH, Guaiba, RS, Brazil
| | - B Dall Agnol
- Centro de Pesquisa em Saúde Animal, Instituto de Pesquisas Veterinárias Desidério Finamor (IPVDF), Estrada do Conde, 6000, Eldorado do Sul, RS 92990-000, Brazil
| | - A Schrank
- Facultad de Ciencias Veterinarias, Universidad Nacional del Nordeste - UNNE, Corrientes, Argentina
| | - L Lozina
- Centro de Biotecnologia, Universidade Federal do Rio Grande do Sul (UFRGS), Porto Alegre, RS, Brazil
| | - G M Klafke
- Centro de Pesquisa em Saúde Animal, Instituto de Pesquisas Veterinárias Desidério Finamor (IPVDF), Estrada do Conde, 6000, Eldorado do Sul, RS 92990-000, Brazil
| | - J Reck
- Centro de Pesquisa em Saúde Animal, Instituto de Pesquisas Veterinárias Desidério Finamor (IPVDF), Estrada do Conde, 6000, Eldorado do Sul, RS 92990-000, Brazil.
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9
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Marzouk AS, Ali AAB. A comparison between the effectiveness of the fungi Beauveria bassiana and Metarhizium anisopliae for the control of Argas persicus with the emphasis of histopathological changes in the integument. Vet Parasitol 2023; 317:109906. [PMID: 36940590 DOI: 10.1016/j.vetpar.2023.109906] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/19/2022] [Revised: 03/06/2023] [Accepted: 03/08/2023] [Indexed: 03/12/2023]
Abstract
Argas persicus is an important ectoparasite of domestic fowl that causes heavy economic losses to the poultry industry. The present study was carried out to compare and assess the effects induced by spraying the fungi Beauveria bassiana and Metarhizium anisopliae separately, on the mobility and viability of semifed adult A. persicus, also to follow the histopathological effect induced by a selected concentration of 1010 conidia/ml of B. bassiana on the integument. Biological studies revealed a more or less similar pattern of response in adults treated with either of the two fungi (Increasing concentration resulting in more death along with examined period). As the estimated LC50 and LC95 of B. bassiana were recorded 5 × 109 and 4.6 × 1012 conidia/ml, respectively, and for M. anisopliae were 3 × 1011 and 2.7 × 1016 conidia/ml respectively, the fungus B. bassiana was more efficient than M. anisopliae when applied at the same concentrations. The study revealed that spraying of Beauveria at 1012 conidia/ml is sufficient to control A. persicus as it recorded 100% efficacy, so it might be selected to be the effective dose. Histological investigation of the integument treated with B. bassiana revealed the dispersal of the hyphal network on the after 11 days of treatment, accompanied by other changes. Results from our study verify the susceptibility of A. persicus to the pathogenic effect induced by spraying B. bassiana, which is sufficient for its control with the recording better results.
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Affiliation(s)
- Aleya Soliman Marzouk
- Zoology Department, Faculty of Science, Ain Shams University, Abbassia, Postal Code 11566 Cairo, Egypt
| | - Asmaa Ali Baioumy Ali
- Zoology Department, Faculty of Science, Ain Shams University, Abbassia, Postal Code 11566 Cairo, Egypt.
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10
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Zuev AG, Akulova AY, Zueva AI. Soil Defaunation in Field Experiments with the Use of Cypermethrin and Its Effect on the Production of Mycelium of Mycorrhizal Fungi. RUSS J ECOL+ 2022. [DOI: 10.1134/s1067413622050125] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
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Evaluating the efficacy of Mazao Tickoff (Metarhizium anisopliae ICIPE 7) in controlling natural tick infestations on cattle in coastal Kenya: Study protocol for a randomized controlled trial. PLoS One 2022; 17:e0272865. [PMID: 35972927 PMCID: PMC9380929 DOI: 10.1371/journal.pone.0272865] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/08/2021] [Accepted: 07/27/2022] [Indexed: 11/19/2022] Open
Abstract
Ticks and tick-borne diseases cause substantial economic losses to the livestock industry in sub-Saharan Africa. Mazao Tickoff is a novel bioacaricide developed for tick control and is based on the entomopathogenic fungus Metarhizium anisopliae sensu lato (s.l.) isolate ICIPE 7. To date, no randomized controlled study has been undertaken to demonstrate the efficacy of this bioacaricide in reducing natural tick infestation on cattle. To this end, this field trial is designed to evaluate the anti-tick efficacy of Mazao Tickoff on cattle in coastal Kenya compared to a standard chemical tick control protocol. In this prospective, multi-center randomized controlled trial, eligible herds will be randomized by the herd size to the intervention arm in a 1:1:1 ratio to either Triatix® (active ingredient: amitraz); Mazao Tickoff (active ingredient: M. anisopliae ICIPE 7); or placebo (excipients of the Mazao Tickoff), with a total enrollment target of 1,077 cattle. Treatments will be dispensed on Day 0 (defined individually as the day each animal receives the first treatment) and thereafter every two weeks until Day 182. Ticks will be counted on every animal in each herd (herds to be included have at least one animal bearing at least one tick on Day 0), and thereafter on bi-weekly intervals until Day 182. The primary efficacy assessments of Mazao Tickoff will be based on the mean percentage reduction in tick counts at each post-treatment follow-up visit compared to the placebo group and the Triatix® arm. Further, the effect of Mazao Tickoff on the prevalence of common cattle pathogens, Anaplasma marginale and Theileria parva, will be determined by assessing incidence and seroprevalence at four different time points. This protocol describes the first rigorous evaluation of the efficacy of Mazao Tickoff and its potential as a viable alternative non-chemical acaricide tool for tick control in Kenya and elsewhere.
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Centenaro FC, Barbieri A, Rico IB, Gonchoroski GZ, Jardim FT, Doyle RL, Dall'Agnol B, Reck J, Webster A. Rotational and selective protocols using acaricides to control a multi-resistant strain of Rhipicephalus microplus under field conditions in Southern Brazil. Ticks Tick Borne Dis 2022; 13:101987. [PMID: 35751938 DOI: 10.1016/j.ttbdis.2022.101987] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/28/2021] [Revised: 05/24/2022] [Accepted: 06/10/2022] [Indexed: 11/18/2022]
Abstract
The cattle tick, Rhipicephalus microplus, causes severe economic losses to beef and dairy production in several countries. The control of the cattle tick is based mostly on chemical acaricides. Currently, there are reports of tick populations resistant to all six classes of acaricides available on the market. The aim of this work was to evaluate two protocols for the control of the cattle tick, R. microplus, under field conditions. For that, an acaricide rotational-based approach and selective (partial)-based protocols were tested against a multi-resistant tick strain. Eighteen Brangus cattle were divided into three experimental groups: Group 1, a rotational-based approach aiming at six treatments per year (spring-spring period) using four different classes of acaricide (IPV6 protocol); Group 2, a selective (partial) and rotational-based protocol, in which only half of the animals with the highest tick counts were treated (IPV7S protocol); and Group 3 (non-treated). The protocols were able to maintain low tick infestation during the 57 weeks of study. The two experimental groups showed lower tick counts than the non-treated group, but not between them. Weekly efficacy of the experimental protocols reached 95% in Group 1 and 88% in Group 2. Herein, we proposed two protocols of cattle tick control (IPV6 and IPV7S) for use in multi-resistant tick populations in Southern Brazil.
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Affiliation(s)
- Fabiana Cassel Centenaro
- Centro de Pesquisa em Saúde Animal, Instituto de Pesquisas Veterinárias Desidério Finamor (IPVDF), Estrada do Conde, 6000, Eldorado do Sul, RS 92990-000, Brazil
| | - Antonela Barbieri
- Centro de Pesquisa em Saúde Animal, Instituto de Pesquisas Veterinárias Desidério Finamor (IPVDF), Estrada do Conde, 6000, Eldorado do Sul, RS 92990-000, Brazil
| | - Isabela Blumberg Rico
- Centro de Pesquisa em Saúde Animal, Instituto de Pesquisas Veterinárias Desidério Finamor (IPVDF), Estrada do Conde, 6000, Eldorado do Sul, RS 92990-000, Brazil
| | - Greice Zorzato Gonchoroski
- Centro de Pesquisa em Saúde Animal, Instituto de Pesquisas Veterinárias Desidério Finamor (IPVDF), Estrada do Conde, 6000, Eldorado do Sul, RS 92990-000, Brazil
| | - Fabrício Tiberê Jardim
- Centro de Pesquisa em Saúde Animal, Instituto de Pesquisas Veterinárias Desidério Finamor (IPVDF), Estrada do Conde, 6000, Eldorado do Sul, RS 92990-000, Brazil
| | - Rovaina Laureano Doyle
- Centro de Pesquisa em Saúde Animal, Instituto de Pesquisas Veterinárias Desidério Finamor (IPVDF), Estrada do Conde, 6000, Eldorado do Sul, RS 92990-000, Brazil
| | - Bruno Dall'Agnol
- Centro de Pesquisa em Saúde Animal, Instituto de Pesquisas Veterinárias Desidério Finamor (IPVDF), Estrada do Conde, 6000, Eldorado do Sul, RS 92990-000, Brazil
| | - José Reck
- Centro de Pesquisa em Saúde Animal, Instituto de Pesquisas Veterinárias Desidério Finamor (IPVDF), Estrada do Conde, 6000, Eldorado do Sul, RS 92990-000, Brazil
| | - Anelise Webster
- Centro de Pesquisa em Saúde Animal, Instituto de Pesquisas Veterinárias Desidério Finamor (IPVDF), Estrada do Conde, 6000, Eldorado do Sul, RS 92990-000, Brazil.
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Perossi IFS, Klein M, Manço MH, Martinelli PB, Bertolo PHL, da Costa RRME, Bonato L, de O Vasconcelos R. Pathology in Practice. J Am Vet Med Assoc 2022; 260:1-3. [PMID: 35113798 DOI: 10.2460/javma.20.08.0478] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
Affiliation(s)
| | | | - Micaela H Manço
- Department of Veterinary Pathology, Faculdade de Ciências Agrárias e Veterinárias, Universidade Estadual Paulista Júlio de Mesquita Filho, Jaboticabal, Brazil
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Dolenga CJR, Anjos AD, Barbosa VHG, Yoshitani UY, Castilho PLDSP, Miyakawa VI, Molento MB. Acaricidal effect of major compounds to control Rhipicephalus microplus (Canestrini, 1887) in dairy cows and possible alternatives for reversing multidrug resistance. REVISTA BRASILEIRA DE PARASITOLOGIA VETERINARIA = BRAZILIAN JOURNAL OF VETERINARY PARASITOLOGY : ORGAO OFICIAL DO COLEGIO BRASILEIRO DE PARASITOLOGIA VETERINARIA 2022; 31:e005422. [PMID: 35648979 PMCID: PMC9901876 DOI: 10.1590/s1984-29612022028] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/30/2022] [Accepted: 05/09/2022] [Indexed: 11/22/2022]
Abstract
Tick control represent a great challenge to animal health. The objective of this study was to evaluate the efficacy of acaricidal compounds against Rhipicephalus microplus from dairy cattle systems in Paraná State, Brazil. Six farms (PR1-PR6) were selected, where anti-tick products were applied at fixed intervals. Two other farms that adopted alternative protocols; target selective treatment (PRS), and individual-based agroecological protocol (PRA) were also included in the trial. Fully engorged R. microplus were collected for the in vitro adult immersion test (AIT), and the egg hatch test (EHT) in all eight populations. The larval packet test (LPT) was used on PR6 and PRA tick populations. The treatment groups were composed of G1: dichlorvos 45% plus cypermethrin 5%, G2: deltamethrin 2.5%, G3: cypermethrin 15%, chlorpyriphos 25%, plus citronellal 1%, and G4: amitraz 12.5%. The efficacy at PR1 to PR6 revealed that G3 and G4 achieved moderate to high efficacy, from 75.0 to 100.0% and 73 to 98%, respectively. In the LPT, the efficacy at PR6 was 76.0, 67.0, 93.0 and 30.6%, while PRA presented 100.0, 100.0, 100.0, and 54.0%, for G1, G2, G3 and G4, respectively. Sustainable parasite control strategies are discussed.
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Affiliation(s)
- Carla Juliana Ribeiro Dolenga
- Laboratório de Parasitologia Clínica Veterinária, Departamento de Medicina Veterinária, Universidade Federal do Paraná - UFPR, Curitiba, PR, Brasil
| | - Alan Dos Anjos
- Laboratório de Parasitologia Clínica Veterinária, Departamento de Medicina Veterinária, Universidade Federal do Paraná - UFPR, Curitiba, PR, Brasil
| | - Victor Hugo Granza Barbosa
- Laboratório de Parasitologia Clínica Veterinária, Departamento de Medicina Veterinária, Universidade Federal do Paraná - UFPR, Curitiba, PR, Brasil
| | - Ursula Yaeko Yoshitani
- Laboratório de Parasitologia Clínica Veterinária, Departamento de Medicina Veterinária, Universidade Federal do Paraná - UFPR, Curitiba, PR, Brasil
| | | | | | - Marcelo Beltrão Molento
- Laboratório de Parasitologia Clínica Veterinária, Departamento de Medicina Veterinária, Universidade Federal do Paraná - UFPR, Curitiba, PR, Brasil
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Carneiro ADS, Mesquita E, Meirelles LN, Bittencourt VREP, Golo PS. Compatibility of different Metarhizium spp. propagules with synthetic acaricides for controlling Rhipicephalus microplus. REVISTA BRASILEIRA DE PARASITOLOGIA VETERINARIA = BRAZILIAN JOURNAL OF VETERINARY PARASITOLOGY : ORGAO OFICIAL DO COLEGIO BRASILEIRO DE PARASITOLOGIA VETERINARIA 2022; 31:e018221. [PMID: 35384990 PMCID: PMC9901882 DOI: 10.1590/s1984-29612022018] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/12/2021] [Accepted: 02/23/2022] [Indexed: 11/22/2022]
Abstract
The inappropriate use of synthetic acaricides has selected resistant Rhipicephalus microplus populations. The present study evaluated the compatibility of different Metarhizium spp. propagules (conidia, blastospores, and microsclerotia) by incubating them with synthetic acaricides (amitraz, deltamethrin, and a combination of cypermethrin, chlorpyrifos, and citronellal) for 1 h, 5 h, 10 h, and 24 h. Conidia and microsclerotia of the tested isolates were usually more tolerant to synthetic acaricides than blastospores. Our study also analyzed the in vitro effect of deltamethrin associated with fungal propagules for controlling a population of R. microplus females that were not susceptible to this synthetic acaricide. The use of entomopathogenic fungi in association with deltamethrin in this tick population caused a greater tick control than did the use of the fungus or the synthetic acaricide separately.
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Affiliation(s)
- Adriani da Silva Carneiro
- Programa de Pós-graduação em Ciências Veterinárias, Instituto de Veterinária, Universidade Federal Rural do Rio de Janeiro - UFRRJ, Seropédica, RJ, Brasil
| | - Emily Mesquita
- Programa de Pós-graduação em Ciências Veterinárias, Instituto de Veterinária, Universidade Federal Rural do Rio de Janeiro - UFRRJ, Seropédica, RJ, Brasil
| | - Laura Nóbrega Meirelles
- Programa de Pós-graduação em Ciências Veterinárias, Instituto de Veterinária, Universidade Federal Rural do Rio de Janeiro - UFRRJ, Seropédica, RJ, Brasil
| | | | - Patrícia Silva Golo
- Departamento de Parasitologia Animal, Instituto de Veterinária, Universidade Federal Rural do Rio de Janeiro - UFRRJ, Seropédica, RJ, Brasil
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Field evaluation of Beauveria bassiana (Balsamo) Vuillemin isolates for the biocontrol of Rhipicephalus microplus (Canestrini) ticks on cattle. Exp Parasitol 2022; 235:108215. [DOI: 10.1016/j.exppara.2022.108215] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/15/2021] [Revised: 01/13/2022] [Accepted: 01/17/2022] [Indexed: 11/29/2022]
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Ebani VV, Mancianti F. Entomopathogenic Fungi and Bacteria in a Veterinary Perspective. BIOLOGY 2021; 10:biology10060479. [PMID: 34071435 PMCID: PMC8229426 DOI: 10.3390/biology10060479] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Subscribe] [Scholar Register] [Received: 04/05/2021] [Revised: 05/21/2021] [Accepted: 05/25/2021] [Indexed: 12/22/2022]
Abstract
Simple Summary Several fungal species are well suited to control arthropods, being able to cause epizootic infection among them and most of them infect their host by direct penetration through the arthropod’s tegument. Most of organisms are related to the biological control of crop pests, but, more recently, have been applied to combat some livestock ectoparasites. Among the entomopathogenic bacteria, Bacillus thuringiensis, innocuous for humans, animals, and plants and isolated from different environments, showed the most relevant activity against arthropods. Its entomopathogenic property is related to the production of highly biodegradable proteins. Entomopathogenic fungi and bacteria are usually employed against agricultural pests, and some studies have focused on their use to control animal arthropods. However, risks of infections in animals and humans are possible; thus, further studies about their activity are necessary. Abstract The present study aimed to review the papers dealing with the biological activity of fungi and bacteria against some mites and ticks of veterinary interest. In particular, the attention was turned to the research regarding acarid species, Dermanyssus gallinae and Psoroptes sp., which are the cause of severe threat in farm animals and, regarding ticks, also pets. Their impact on animal and human health has been stressed, examining the weaknesses and strengths of conventional treatments. Bacillus thuringiensis, Beauveria bassiana and Metarhizium anisopliae are the most widely employed agents. Their activities have been reviewed, considering the feasibility of an in-field application and the effectiveness of the administration alone or combined with conventional and alternative drugs is reported.
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Affiliation(s)
- Valentina Virginia Ebani
- Department of Veterinary Sciences, University of Pisa, viale delle Piagge 2, 56124 Pisa, Italy;
- Interdepartmental Research Center “Nutraceuticals and Food for Health”, University of Pisa, via del Borghetto 80, 56124 Pisa, Italy
- Correspondence: ; Tel.: +39-050-221-6968
| | - Francesca Mancianti
- Department of Veterinary Sciences, University of Pisa, viale delle Piagge 2, 56124 Pisa, Italy;
- Interdepartmental Research Center “Nutraceuticals and Food for Health”, University of Pisa, via del Borghetto 80, 56124 Pisa, Italy
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18
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Alonso-Díaz MA, Fernández-Salas A. Entomopathogenic Fungi for Tick Control in Cattle Livestock From Mexico. FRONTIERS IN FUNGAL BIOLOGY 2021; 2:657694. [PMID: 37744087 PMCID: PMC10512273 DOI: 10.3389/ffunb.2021.657694] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 01/23/2021] [Accepted: 04/01/2021] [Indexed: 09/26/2023]
Abstract
Ticks are one of the main economic threats to the cattle industry worldwide affecting productivity, health and welfare. The need for alternative methods to control tick populations is prompted by the high prevalence of multiresistant tick strains to the main chemical acaricides and their ecological consequences. Biological control using entomopathogenic fungi (EPF) is one of the most promising alternative options. The objective of this paper is to review the use of EPF as an alternative control method against cattle ticks in Mexico. Metarhizium anisopliae sensu lato (s.l.) and Beauveria bassiana s.l. are the most studied EPF for the biological control of ticks in the laboratory and in the field, mainly against Rhipicephalus microplus; however, evaluations against other important cattle ticks such as Amblyomma mixtum and R. annulatus, are needed. A transdisciplinary approach is required to incorporate different types of tools, such as genomics, transcriptomics and proteomics in order to better understand the pathogenicity/virulence mechanism in EPF against ticks. Laboratory tests have demonstrated the EPF efficacy to control susceptible and resistant/multiresistant tick populations; whereas, field tests have shown satisfactory control efficiency of M. anisopliae s.l. against different stages of R. microplus when applied both on pasture and on cattle. Epidemiological aspects of ticks and environmental factors are considered as components that influence the acaricidal behavior of the EPF. Finally, considering all these aspects, some recommendations are proposed for the use of EPF in integrated control schemes for livestock ticks.
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19
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Vaccine approaches applied to controlling dog ticks. Ticks Tick Borne Dis 2021; 12:101631. [PMID: 33494026 DOI: 10.1016/j.ttbdis.2020.101631] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/15/2020] [Revised: 11/17/2020] [Accepted: 11/18/2020] [Indexed: 11/20/2022]
Abstract
Ticks are considered the most important vectors in veterinary medicine with a profound impact on animal health worldwide, as well as being key vectors of diseases affecting household pets. The leading strategy applied to dog tick control is the continued use of acaricides. However, this approach is not sustainable due to surging tick resistance, growing public concern over pesticide residues in food and in the environment, and the rising costs associated with their development. In contrast, tick vaccines are a cost-effective and environmentally friendly alternative against tick-borne diseases by controlling vector infestations and reducing pathogen transmission. These premises have encouraged researchers to develop an effective vaccine against ticks, with several proteins having been characterized and used in native, synthetic, and recombinant forms as antigens in immunizations. The growing interaction between domestic pets and people underscores the importance of developing new tick control measures that require effective screening platforms applied to vaccine development. However, as reviewed in this paper, very little progress has been made in controlling ectoparasite infestations in pets using the vaccine approach. The control of tick infestations and pathogen transmission could be obtained through immunization programs aimed at reducing the tick population and interfering in the pathogenic transmission that affects human and animal health on a global scale.
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20
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Nava S, Rossner MV, Torrents J, Morel N, Martinez NC, Mangold AJ, Guglielmone AA. Management strategies to minimize the use of synthetic chemical acaricides in the control of the cattle tick Rhipicephalus (Boophilus) microplus (Canestrini, 1888) in an area highly favourable for its development in Argentina. MEDICAL AND VETERINARY ENTOMOLOGY 2020; 34:264-278. [PMID: 32031286 DOI: 10.1111/mve.12432] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/05/2019] [Revised: 12/31/2019] [Accepted: 01/13/2020] [Indexed: 06/10/2023]
Abstract
The aim of this work was to test the efficacy of winter-spring control strategies against Rhipicephalus (Boophilus) microplus (Canestrini, 1888) (Ixodida: Ixodidae) in an area highly favourable for its development in Argentina. Control schemes using three or four annual applications of synthetic acaricides were evaluated. Furthermore, the dynamics of the non-parasitic phases of R. microplus were analysed to provide a framework for the application of pasture spelling as a tool for tick control. The treatment schemes provided appropriate levels of efficacy against R. microplus and also prevented the occurrence of the major peak in abundance of this tick in autumn. A significant overall effect against R. microplus can be achieved when the control strategies tested in this study are applied within the area most ecologically favourable for this tick in Argentina. Analysis of the dynamics of the non-parasitic phase of R. microplus indicates that the spelling period required to achieve a significant reduction of larvae in pastures fluctuates between 12 and 17 weeks if spelling is initiated in spring or early summer, but between 20 and 28 weeks if spelling is started in late summer, autumn or winter.
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Affiliation(s)
- S Nava
- Instituto Nacional de Tecnología Agropecuaria, Estación Experimental Agropecuaria Rafaela, Rafaela, Santa Fe, Argentina
- Consejo Nacional de Investigaciones Científicas y Técnicas (CONICET), Buenos Aires, Argentina
| | - M V Rossner
- Instituto Nacional de Tecnología Agropecuaria, Estación Experimental Agropecuaria Colonia Benítez, Colonia Benítez, Chaco, Argentina
| | - J Torrents
- Facultad de Ciencias Veterinarias, Universidad Nacional del Litoral, Esperanza, Santa Fe, Argentina
| | - N Morel
- Instituto Nacional de Tecnología Agropecuaria, Estación Experimental Agropecuaria Rafaela, Rafaela, Santa Fe, Argentina
| | - N C Martinez
- Instituto Nacional de Tecnología Agropecuaria, Agencia de Extensión Rural Garabato, Garabato, Santa Fe, Argentina
| | - A J Mangold
- Instituto Nacional de Tecnología Agropecuaria, Estación Experimental Agropecuaria Rafaela, Rafaela, Santa Fe, Argentina
| | - A A Guglielmone
- Instituto Nacional de Tecnología Agropecuaria, Estación Experimental Agropecuaria Rafaela, Rafaela, Santa Fe, Argentina
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Beys-da-Silva WO, Rosa RL, Berger M, Coutinho-Rodrigues CJB, Vainstein MH, Schrank A, Bittencourt VREP, Santi L. Updating the application of Metarhizium anisopliae to control cattle tick Rhipicephalus microplus (Acari: Ixodidae). Exp Parasitol 2019; 208:107812. [PMID: 31809704 DOI: 10.1016/j.exppara.2019.107812] [Citation(s) in RCA: 26] [Impact Index Per Article: 5.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/21/2019] [Revised: 10/30/2019] [Accepted: 12/02/2019] [Indexed: 01/07/2023]
Abstract
The bovine tick, Rhipicephalus microplus, is the main ectoparasite of cattle and causes loss of billions of dollars worldwide in lost meat, milk, and leather production, as well as control expenses. In addition to systemically impacting the host during the parasitic act, this parasite is also an important disease vector. Traditionally, the main commercial control of the tick is achieved through application of chemical acaricides, which can leave residues in the meat and milk. Moreover, ticks can become resistant to these chemicals due to their massive and incorrect use. Many alternative methods have been tested including vaccines and natural products from plant origin. However, the efficacy of these treatments is variable and limited, especially when used alone. Arthropod-pathogenic fungi, such as Metarhizium anisopliae, are among the natural microbial agents with promising potential to be used alone or in association with other products, for example with chemical acaricides. This article discusses several aspects of bovine tick control related to the use of M. anisopliae, which is one of the most studied and viable alternative tools for effective tick control.
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Affiliation(s)
- Walter O Beys-da-Silva
- Faculdade de Farmácia, Universidade Federal do Rio Grande do Sul, Brazil; Centro de Pesquisa Experimental, Hospital de Clínicas de Porto Alegre, Brazil; Centro de Biotecnologia, Universidade Federal do Rio Grande do Sul, Brazil.
| | - Rafael L Rosa
- Faculdade de Farmácia, Universidade Federal do Rio Grande do Sul, Brazil; Centro de Biotecnologia, Universidade Federal do Rio Grande do Sul, Brazil
| | - Markus Berger
- Centro de Pesquisa Experimental, Hospital de Clínicas de Porto Alegre, Brazil
| | - Caio J B Coutinho-Rodrigues
- Departamento de Parasitologia Animal, Instituto de Veterinária, Universidade Federal Rural do Rio de Janeiro, Brazil
| | | | - Augusto Schrank
- Centro de Biotecnologia, Universidade Federal do Rio Grande do Sul, Brazil
| | - Vânia R E P Bittencourt
- Departamento de Parasitologia Animal, Instituto de Veterinária, Universidade Federal Rural do Rio de Janeiro, Brazil
| | - Lucélia Santi
- Faculdade de Farmácia, Universidade Federal do Rio Grande do Sul, Brazil; Centro de Pesquisa Experimental, Hospital de Clínicas de Porto Alegre, Brazil; Centro de Biotecnologia, Universidade Federal do Rio Grande do Sul, Brazil.
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22
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Fiorotti J, Menna-Barreto RFS, Gôlo PS, Coutinho-Rodrigues CJB, Bitencourt ROB, Spadacci-Morena DD, Angelo IDC, Bittencourt VREP. Ultrastructural and Cytotoxic Effects of Metarhizium robertsii Infection on Rhipicephalus microplus Hemocytes. Front Physiol 2019; 10:654. [PMID: 31191351 PMCID: PMC6548823 DOI: 10.3389/fphys.2019.00654] [Citation(s) in RCA: 18] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/04/2019] [Accepted: 05/09/2019] [Indexed: 12/15/2022] Open
Abstract
Metarhizium is an entomopathogenic fungus widely employed in the biological control of arthropods. Hemocytes present in the hemolymph of invertebrates are the cells involved in the immune response of arthropods. Despite this, knowledge about Rhipicephalus microplus hemocytes morphological aspects as well as their role in response to the fungal infection is scarce. The present study aimed to analyze the hemocytes of R. microplus females after Metarhizium robertsii infection, using light and electron microscopy approaches associated with the cytotoxicity evaluation. Five types of hemocytes (prohemocytes, spherulocytes, plasmatocytes, granulocytes, and oenocytoids) were described in the hemolymph of uninfected ticks, while only prohemocytes, granulocytes, and plasmatocytes were observed in fungus-infected tick females. Twenty-four hours after the fungal infection, only granulocytes and plasmatocytes were detected in the transmission electron microscopy analysis. Hemocytes from fungus-infected tick females showed several cytoplasmic vacuoles with different electron densities, and lipid droplets in close contact to low electron density vacuoles, as well as the formation of autophagosomes and subcellular material in different stages of degradation could also be observed. M. robertsii propagules were more toxic to tick hemocytes in the highest concentration tested (1.0 × 108 conidia mL-1). Interestingly, the lowest fungus concentration did not affect significantly the cell viability. Microanalysis showed that cells granules from fungus-infected and uninfected ticks had similar composition. This study addressed the first report of fungal cytotoxicity analyzing ultrastructural effects on hemocytes of R. microplus infected with entomopathogenic fungi. These results open new perspectives for the comprehension of ticks physiology and pathology, allowing the identification of new targets for the biological control.
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Affiliation(s)
- Jéssica Fiorotti
- Programa de Pós-Graduação em Ciências Veterinárias, Instituto de Veterinária, Universidade Federal Rural do Rio de Janeiro, Seropédica, Brazil
| | | | - Patrícia Silva Gôlo
- Departamento de Parasitologia Animal, Instituto de Veterinária, Universidade Federal Rural do Rio de Janeiro, Seropédica, Brazil
| | | | - Ricardo Oliveira Barbosa Bitencourt
- Programa de Pós-Graduação em Ciências Veterinárias, Instituto de Veterinária, Universidade Federal Rural do Rio de Janeiro, Seropédica, Brazil
| | | | - Isabele da Costa Angelo
- Departamento de Epidemiologia e Saúde Pública, Instituto de Veterinária, Universidade Federal Rural do Rio de Janeiro, Seropédica, Brazil
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23
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Zhendong H, Guangfu Y, Zhong Z, Ruiling Z. Phylogenetic relationships and effectiveness of four Beauveria bassiana sensu lato strains for control of Haemaphysalis longicornis (Acari: Ixodidae). EXPERIMENTAL & APPLIED ACAROLOGY 2019; 77:83-92. [PMID: 30488158 DOI: 10.1007/s10493-018-0329-9] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/20/2018] [Accepted: 11/19/2018] [Indexed: 06/09/2023]
Abstract
Haemaphysalis longicornis (Acari: Ixodidae) is an important vector tick that is widely distributed around the world. In many regions, this tick acts as vector of a wide range of pathogens to humans and animals, and its control is mainly based on the use of chemical pesticides. However, the occurrence of some adverse effects, such as tick resistance to pesticides and food and environmental contamination, are driving the need to develop more effective and environmentally sound approaches to control and prevent ticks. As an alternative control strategy, entomopathogenic fungi have been extensively used for the control of pests and cause high mortality in various ticks. In this study, we identified four isolates of Beauveria bassiana sensu lato from insects and investigated their pathogenicity against different developmental stages of H. longicornis (eggs, unfed larvae, unfed nymphs and engorged females). Phylogenetic analysis demonstrated that the four isolates of B. bassiana clustered into two clades. Four isolates showed different acaricidal qualities: the isolate from Cerambycidae (EF3) exhibited the highest pathogenicity to all developmental tick stages tested. High doses (1 × 107 conidia/ml) of the clade I fungi collected from Cryptotympana atrata fabricus (Cicadidae) (EF1), Cimicidae (EF2), and Boettcherisca peregrine (Sarcophagidae) (EF4) also showed virulence against H. longicornis, with high doses of the fungi application causing higher mortality than control group. Altogether, this study demonstrated that all four isolates of B. bassiana showed high virulence toward different developmental stages of H. longicornis, and therefore, they can be of potential use as biological control agents of ticks.
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Affiliation(s)
- Huang Zhendong
- Collaborative Innovation Center for the Origin and Control of Emerging Infectious Diseases, Taishan Medical University, Taian, 271016, Shandong, China
- School of Basic Medical Science, Taishan Medical University, Taian, 271016, Shandong, China
| | - Yu Guangfu
- Collaborative Innovation Center for the Origin and Control of Emerging Infectious Diseases, Taishan Medical University, Taian, 271016, Shandong, China
- School of Basic Medical Science, Taishan Medical University, Taian, 271016, Shandong, China
| | - Zhang Zhong
- Collaborative Innovation Center for the Origin and Control of Emerging Infectious Diseases, Taishan Medical University, Taian, 271016, Shandong, China.
- School of Basic Medical Science, Taishan Medical University, Taian, 271016, Shandong, China.
| | - Zhang Ruiling
- Collaborative Innovation Center for the Origin and Control of Emerging Infectious Diseases, Taishan Medical University, Taian, 271016, Shandong, China.
- School of Basic Medical Science, Taishan Medical University, Taian, 271016, Shandong, China.
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24
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Santi L, Coutinho-Rodrigues CJB, Berger M, Klein LAS, De Souza EM, Rosa RL, Guimarães JA, Yates JR, Perinotto WMS, Bittencourt VREP, Beys-da-Silva WO. Secretomic analysis of Beauveria bassiana related to cattle tick, Rhipicephalus microplus, infection. Folia Microbiol (Praha) 2018; 64:361-372. [PMID: 30361880 DOI: 10.1007/s12223-018-0659-3] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/28/2018] [Accepted: 10/12/2018] [Indexed: 01/10/2023]
Abstract
Beauveria bassiana is widely studied as an alternative to chemical acaricides in controlling the cattle tick Rhipicephalus microplus. Although its biocontrol efficiency has been proved in laboratory and field scales, there is a need to a better understanding of host interaction process at molecular level related to biocontrol activity. In this work, applying a proteomic technique multidimensional protein identification technology (MudPIT), the differential secretome of B. bassiana induced by the host R. microplus cuticle was evaluated. The use of the host cuticle in a culture medium, mimicking an infection condition, is an established experimental model that triggers the secretion of inducible enzymes. From a total of 236 proteins, 50 proteins were identified exclusively in infection condition, assigned to different aspects of infection like host adhesion, cuticle penetration and fungal defense, and stress. Other 32 proteins were considered up- or down-regulated. In order to get a meaningful global view of the secretome, several bioinformatic analyses were performed. Regarding molecular function classification, the highest number of proteins in the differential secretome was assigned in to hydrolase activity, enzyme class of all cuticle-degrading enzymes like lipases and proteases. These activities were also further validated through enzymatic assays. The results presented here reveal dozens of specific proteins and different processes potentially implicated in cattle tick infection improving the understanding of molecular basis of biocontrol of B. bassiana against R. microplus.
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Affiliation(s)
- Lucélia Santi
- Faculdade de Farmácia, Universidade Federal do Rio Grande do Sul, Av Ipiranga, 2752, Porto Alegre, RS, 90610-000, Brazil
- Centro de Pesquisa Experimental, Hospital de Clínicas de Porto Alegre, R. Ramiro Barcelos, 2350, Porto Alegre, RS, 90035-903, Brazil
| | - Caio J B Coutinho-Rodrigues
- Departamento de Parasitologia Animal, Universidade Federal Rural do Rio de Janeiro, Rod BR 465, km 7, Seropédica, RJ, 23890-000, Brazil
| | - Markus Berger
- Centro de Pesquisa Experimental, Hospital de Clínicas de Porto Alegre, R. Ramiro Barcelos, 2350, Porto Alegre, RS, 90035-903, Brazil
| | - Lisete A S Klein
- Univates, Av Avelino Talini, 171, Lajeado, RS, 95914-014, Brazil
| | | | - Rafael L Rosa
- Programa de Pós-Graduação em Biologia Celular e Molecular, Universidade Federal do Rio Grande do Sul, Av Bento Gonçalves, 9500, Porto Alegre, RS, 91501-970, Brazil
| | - Jorge A Guimarães
- Centro de Pesquisa Experimental, Hospital de Clínicas de Porto Alegre, R. Ramiro Barcelos, 2350, Porto Alegre, RS, 90035-903, Brazil
- Programa de Pós-Graduação em Biologia Celular e Molecular, Universidade Federal do Rio Grande do Sul, Av Bento Gonçalves, 9500, Porto Alegre, RS, 91501-970, Brazil
| | - John R Yates
- Department of Chemical Physiology and Molecular and Cellular Neuroscience, The Scripps Research Institute, 10550 N Torrey Pines Rd, La Jolla, CA, 92037, USA
| | - Wendell M S Perinotto
- Centro de Ciências Agrárias, Ambientais e Biológicas, Universidade Federal do Recôncavo da Bahia, Tv. Primeira Brejinhos, 540-736, Cruz das Almas, BA, 44380-000, Brazil
| | - Vânia R E P Bittencourt
- Departamento de Parasitologia Animal, Universidade Federal Rural do Rio de Janeiro, Rod BR 465, km 7, Seropédica, RJ, 23890-000, Brazil
| | - Walter O Beys-da-Silva
- Faculdade de Farmácia, Universidade Federal do Rio Grande do Sul, Av Ipiranga, 2752, Porto Alegre, RS, 90610-000, Brazil.
- Centro de Pesquisa Experimental, Hospital de Clínicas de Porto Alegre, R. Ramiro Barcelos, 2350, Porto Alegre, RS, 90035-903, Brazil.
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25
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Bernardo CC, Barreto LP, e Silva CDS, Luz C, Arruda W, Fernandes ÉK. Conidia and blastospores of Metarhizium spp. and Beauveria bassiana s.l.: Their development during the infection process and virulence against the tick Rhipicephalus microplus. Ticks Tick Borne Dis 2018; 9:1334-1342. [DOI: 10.1016/j.ttbdis.2018.06.001] [Citation(s) in RCA: 27] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/02/2018] [Revised: 05/24/2018] [Accepted: 06/04/2018] [Indexed: 01/16/2023]
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26
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Benelli G. Managing mosquitoes and ticks in a rapidly changing world - Facts and trends. Saudi J Biol Sci 2018; 26:921-929. [PMID: 31303820 PMCID: PMC6600734 DOI: 10.1016/j.sjbs.2018.06.007] [Citation(s) in RCA: 18] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/07/2018] [Revised: 06/06/2018] [Accepted: 06/26/2018] [Indexed: 02/08/2023] Open
Abstract
Vector-borne diseases transmitted by mosquitoes and ticks are on the rise. The effective and sustainable control of these arthropod vectors is a puzzling challenge for public health worldwide. In the present review, I attempted to provide a concise and updated overview of the current mosquito and tick research scenario. The wide array of control tools recently developed has been considered, with special reference to those approved by the World Health Organization Vector Control Advisory Group (WHO VCAG), as well as novel ones with an extremely promising potential to be exploited in vector control programs. Concerning mosquitoes, a major focus has been given on genetically modified vectors, eave tubes, attractive toxic sugar baits (ATSB) and biocontrol agents. Regarding ticks, the recent development of highly effective repellents and acaricides (including nanoformulated ones) as well as behavior-based control tools, has been highlighted. In the second part of the review, key research questions about biology and control of mosquitoes and ticks have been critically formulated. A timely research agenda outlining hot issues to be addressed in mosquito and tick research is provided. Overall, it is expected that the present review will contribute to boost research and applications on successful mosquito and tick control strategies, along with an improved knowledge of their biology and ecology.
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Affiliation(s)
- Giovanni Benelli
- Department of Agriculture, Food and Environment, University of Pisa, via del Borghetto 80, 56124 Pisa, Italy.,The BioRobotics Institute, Sant'Anna School of Advanced Studies, viale Rinaldo Piaggio 34, 56025, Pontedera, Pisa, Italy
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27
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Rodriguez-Vivas RI, Jonsson NN, Bhushan C. Strategies for the control of Rhipicephalus microplus ticks in a world of conventional acaricide and macrocyclic lactone resistance. Parasitol Res 2018; 117:3-29. [PMID: 29152691 PMCID: PMC5748392 DOI: 10.1007/s00436-017-5677-6] [Citation(s) in RCA: 153] [Impact Index Per Article: 25.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/07/2017] [Accepted: 11/06/2017] [Indexed: 12/11/2022]
Abstract
Infestations with the cattle tick, Rhipicephalus microplus, constitute the most important ectoparasite problem for cattle production in tropical and subtropical regions worldwide, resulting in major economic losses. The control of R. microplus is mostly based on the use of conventional acaricides and macrocyclic lactones. However, the intensive use of such compounds has resulted in tick populations that exhibit resistance to all major acaricide chemical classes. Consequently, there is a need for the development of alternative approaches, possibly including the use of animal husbandry practices, synergized pesticides, rotation of acaricides, pesticide mixture formulations, manual removal of ticks, selection for host resistance, nutritional management, release of sterile male hybrids, environmental management, plant species that are unfavourable to ticks, pasture management, plant extracts, essential oils and vaccination. Integrated tick management consists of the systematic combination of at least two control technologies aiming to reduce selection pressure in favour of acaricide-resistant individuals, while maintaining adequate levels of animal production. The purpose of this paper is to present a current review on conventional acaricide and macrocyclic lactone resistance for better understanding and control of resistant ticks with particular emphasis on R. microplus on cattle.
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Affiliation(s)
- Roger I Rodriguez-Vivas
- Facultad de Medicina Veterinaria y Zootecnia, Campus de Ciencias Biológicas y Agropecuarias, Universidad Autónoma de Yucatán, km. 15.5 Carretera Mérida-Xmatkuil, 97000, Mérida, Yucatán, Mexico.
| | - Nicholas N Jonsson
- College of Medical, Veterinary and Life Sciences, University of Glasgow, G61 1QH, Glasgow, UK
| | - Chandra Bhushan
- Bayer Animal Health GmbH, Kaiser-Wilhelm-Alee 10, 51368, Leverkusen, Germany
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28
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Webster A, Pradel E, Souza UA, Martins JR, Reck J, Schrank A, Klafke G. Does the effect of a Metarhizium anisopliae isolate on Rhipicephalus microplus depend on the tick population evaluated? Ticks Tick Borne Dis 2016; 8:270-274. [PMID: 27908773 DOI: 10.1016/j.ttbdis.2016.11.012] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/04/2016] [Revised: 11/23/2016] [Accepted: 11/23/2016] [Indexed: 10/20/2022]
Abstract
The filamentous fungus Metarhizium anisopliae is an arthropod pathogen used in the biological control of pests in agriculture and livestock. The effect of the fungus M. anisopliae on ticks has been shown in experiments in vitro. The aim of the present study was to compare the susceptibility of different field isolates of Rhipicephalus microplus to M. anisopliae. A total of 67 field isolates were evaluated. Rhipicephalus microplus larvae were immersed in an M. anisopliae suspension (108 conidia/mL) for 5min. The median lethal times (LT50) ranged from 2.6 to 24.9days. Mortality observed at the 15th day after treatment ranged from 26.3 to 100% in the tested samples. The effect of M. anisopliae on tick isolates was not associated with their susceptibility to any acaricide tested, animal stocking rate, cattle breed, rotational grazing, cultivated pasture, production system, presence of wet areas or biome. The integration of livestock and agriculture practices in the farm and the frequency of acaricide treatment seem to be associated with tick susceptibility to M. anisopliae. These results demonstrated that field populations of R. microplus show a high variation in their susceptibility to M. anisopliae.
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Affiliation(s)
- Anelise Webster
- Centro de Biotecnologia, Universidade Federal do Rio Grande do Sul (UFRGS), Programa de pós-graduação em Biologia Celular e Molecular, Porto Alegre, RS, Brazil; Instituto de Pesquisas Veterinárias Desidério Finamor (IPVDF), Fundação Estadual de Pesquisa Agropecuária (FEPAGRO), Eldorado do Sul, RS, Brazil.
| | - Endrigo Pradel
- Instituto de Pesquisas Veterinárias Desidério Finamor (IPVDF), Fundação Estadual de Pesquisa Agropecuária (FEPAGRO), Eldorado do Sul, RS, Brazil
| | - Ugo Araújo Souza
- Instituto de Pesquisas Veterinárias Desidério Finamor (IPVDF), Fundação Estadual de Pesquisa Agropecuária (FEPAGRO), Eldorado do Sul, RS, Brazil
| | - João Ricardo Martins
- Instituto de Pesquisas Veterinárias Desidério Finamor (IPVDF), Fundação Estadual de Pesquisa Agropecuária (FEPAGRO), Eldorado do Sul, RS, Brazil
| | - José Reck
- Instituto de Pesquisas Veterinárias Desidério Finamor (IPVDF), Fundação Estadual de Pesquisa Agropecuária (FEPAGRO), Eldorado do Sul, RS, Brazil
| | - Augusto Schrank
- Centro de Biotecnologia, Universidade Federal do Rio Grande do Sul (UFRGS), Programa de pós-graduação em Biologia Celular e Molecular, Porto Alegre, RS, Brazil
| | - Guilherme Klafke
- Instituto de Pesquisas Veterinárias Desidério Finamor (IPVDF), Fundação Estadual de Pesquisa Agropecuária (FEPAGRO), Eldorado do Sul, RS, Brazil
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29
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González J, Valcárcel F, Pérez-Sánchez JL, Tercero-Jaime JM, Cutuli MT, Olmeda AS. Control of Hyalomma lusitanicum (Acari: Ixodidade) Ticks Infesting Oryctolagus cuniculus (Lagomorpha: Leporidae) Using the Entomopathogenic Fungus Beauveria bassiana (Hyocreales: Clavicipitaceae) in Field Conditions. JOURNAL OF MEDICAL ENTOMOLOGY 2016; 53:1396-1402. [PMID: 27297213 DOI: 10.1093/jme/tjw088] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/14/2016] [Accepted: 05/12/2016] [Indexed: 06/06/2023]
Abstract
Entomopathogenic fungi are widely used to control arthropods not just in agricultural settings but also in Veterinary Medicine and Public Health. These products have been employed to control tick populations and tick-borne diseases. The effectiveness of these control measures not only depends on the fungi, but also on the tick species and environmental conditions. In Mesomediterranean areas, tick species are adapted to extreme climatic conditions and it is therefore especially important to develop suitable tick control strategies. The aim of this study was to evaluate the effectiveness of a new method of tick control which entails the application of a commercial strain of Beauveria bassiana (Balsamo, Vuillemin) on wild rabbit burrows under field conditions. Aqueous solutions of the product were applied using a mist blower sprayer into 1,717 burrows. Two trials were performed, one in spring and the other in summer. The parasitic index (PI) was calculated for 10 rabbits per treatment per time point on day +30, +60, and +90 posttreatment and efficiency was calculated by comparing the PI for ticks in treated and untreated rabbits. A total of 20,234 ixodid ticks were collected. Hyalomma lusitanicum Koch, 1844 was the most abundant tick feeding on rabbits. Treatment significantly reduced the PI in spring (by 78.63% and 63.28% on day +30 and +60, respectively; P < 0.05), but appeared to be less effective in summer, with a marginally significant tick reduction of 35.72% on day +30 (P = 0.05). Results suggest that the efficacy of applications inside burrows could be temperature-dependent and that such applications could be an economic alternative to rabbit tick control during at least two months using a diluted solution of B. bassiana conidia.
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Affiliation(s)
- J González
- Villamagna SA, Finca "La Garganta", 14.440 Villanueva de Córdoba, Córdoba, Spain
| | - F Valcárcel
- Grupo de Parasitología Animal, Departamento de Reproducción Animal, Instituto Nacional de Investigación y Tecnologías Agrarias y Alimentarias, INIA, 28040, Madrid, Spain (; ; )
| | - J L Pérez-Sánchez
- Grupo de Parasitología Animal, Departamento de Reproducción Animal, Instituto Nacional de Investigación y Tecnologías Agrarias y Alimentarias, INIA, 28040, Madrid, Spain (; ; )
- Departamento de Sanidad Animal, Facultad de Veterinaria, Universidad Complutense de Madrid, 28040 Madrid, Spain (; )
| | - J M Tercero-Jaime
- Grupo de Parasitología Animal, Departamento de Reproducción Animal, Instituto Nacional de Investigación y Tecnologías Agrarias y Alimentarias, INIA, 28040, Madrid, Spain (; ; )
| | - M T Cutuli
- Departamento de Sanidad Animal, Facultad de Veterinaria, Universidad Complutense de Madrid, 28040 Madrid, Spain (; )
| | - A S Olmeda
- Departamento de Sanidad Animal, Facultad de Veterinaria, Universidad Complutense de Madrid, 28040 Madrid, Spain (; )
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30
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Sbaraini N, Guedes RLM, Andreis FC, Junges Â, de Morais GL, Vainstein MH, de Vasconcelos ATR, Schrank A. Secondary metabolite gene clusters in the entomopathogen fungus Metarhizium anisopliae: genome identification and patterns of expression in a cuticle infection model. BMC Genomics 2016; 17:736. [PMID: 27801295 PMCID: PMC5088523 DOI: 10.1186/s12864-016-3067-6] [Citation(s) in RCA: 27] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/03/2022] Open
Abstract
Background The described species from the Metarhizium genus are cosmopolitan fungi that infect arthropod hosts. Interestingly, while some species infect a wide range of hosts (host-generalists), other species infect only a few arthropods (host-specialists). This singular evolutionary trait permits unique comparisons to determine how pathogens and virulence determinants emerge. Among the several virulence determinants that have been described, secondary metabolites (SMs) are suggested to play essential roles during fungal infection. Despite progress in the study of pathogen-host relationships, the majority of genes related to SM production in Metarhizium spp. are uncharacterized, and little is known about their genomic organization, expression and regulation. To better understand how infection conditions may affect SM production in Metarhizium anisopliae, we have performed a deep survey and description of SM biosynthetic gene clusters (BGCs) in M. anisopliae, analyzed RNA-seq data from fungi grown on cattle-tick cuticles, evaluated the differential expression of BGCs, and assessed conservation among the Metarhizium genus. Furthermore, our analysis extended to the construction of a phylogeny for the following three BGCs: a tropolone/citrinin-related compound (MaPKS1), a pseurotin-related compound (MaNRPS-PKS2), and a putative helvolic acid (MaTERP1). Results Among 73 BGCs identified in M. anisopliae, 20 % were up-regulated during initial tick cuticle infection and presumably possess virulence-related roles. These up-regulated BGCs include known clusters, such as destruxin, NG39x and ferricrocin, together with putative helvolic acid and, pseurotin and tropolone/citrinin-related compound clusters as well as uncharacterized clusters. Furthermore, several previously characterized and putative BGCs were silent or down-regulated in initial infection conditions, indicating minor participation over the course of infection. Interestingly, several up-regulated BGCs were not conserved in host-specialist species from the Metarhizium genus, indicating differences in the metabolic strategies employed by generalist and specialist species to overcome and kill their host. These differences in metabolic potential may have been partially shaped by horizontal gene transfer (HGT) events, as our phylogenetic analysis provided evidence that the putative helvolic acid cluster in Metarhizium spp. originated from an HGT event. Conclusions Several unknown BGCs are described, and aspects of their organization, regulation and origin are discussed, providing further support for the impact of SM on the Metarhizium genus lifestyle and infection process. Electronic supplementary material The online version of this article (doi:10.1186/s12864-016-3067-6) contains supplementary material, which is available to authorized users.
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Affiliation(s)
- Nicolau Sbaraini
- Rede Avançada em Biologia Computacional, RABICÓ, Petrópolis, RJ, Brazil.,Centro de Biotecnologia, Programa de Pós-graduação em Biologia Celular e Molecular, Universidade Federal do Rio Grande do Sul, Porto Alegre, RS, Brazil
| | - Rafael Lucas Muniz Guedes
- Rede Avançada em Biologia Computacional, RABICÓ, Petrópolis, RJ, Brazil.,Laboratório Nacional de Computação Científica, LNCC, Petrópolis, RJ, Brazil
| | - Fábio Carrer Andreis
- Rede Avançada em Biologia Computacional, RABICÓ, Petrópolis, RJ, Brazil.,Centro de Biotecnologia, Programa de Pós-graduação em Biologia Celular e Molecular, Universidade Federal do Rio Grande do Sul, Porto Alegre, RS, Brazil
| | - Ângela Junges
- Rede Avançada em Biologia Computacional, RABICÓ, Petrópolis, RJ, Brazil.,Centro de Biotecnologia, Programa de Pós-graduação em Biologia Celular e Molecular, Universidade Federal do Rio Grande do Sul, Porto Alegre, RS, Brazil
| | - Guilherme Loss de Morais
- Rede Avançada em Biologia Computacional, RABICÓ, Petrópolis, RJ, Brazil.,Centro de Biotecnologia, Programa de Pós-graduação em Biologia Celular e Molecular, Universidade Federal do Rio Grande do Sul, Porto Alegre, RS, Brazil.,Laboratório Nacional de Computação Científica, LNCC, Petrópolis, RJ, Brazil
| | - Marilene Henning Vainstein
- Rede Avançada em Biologia Computacional, RABICÓ, Petrópolis, RJ, Brazil.,Centro de Biotecnologia, Programa de Pós-graduação em Biologia Celular e Molecular, Universidade Federal do Rio Grande do Sul, Porto Alegre, RS, Brazil
| | - Ana Tereza Ribeiro de Vasconcelos
- Rede Avançada em Biologia Computacional, RABICÓ, Petrópolis, RJ, Brazil.,Laboratório Nacional de Computação Científica, LNCC, Petrópolis, RJ, Brazil
| | - Augusto Schrank
- Rede Avançada em Biologia Computacional, RABICÓ, Petrópolis, RJ, Brazil. .,Centro de Biotecnologia, Programa de Pós-graduação em Biologia Celular e Molecular, Universidade Federal do Rio Grande do Sul, Porto Alegre, RS, Brazil.
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31
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Heat-stressed Metarhizium anisopliae: viability (in vitro) and virulence (in vivo) assessments against the tick Rhipicephalus sanguineus. Parasitol Res 2016; 116:111-121. [PMID: 27704216 DOI: 10.1007/s00436-016-5267-z] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/22/2016] [Accepted: 09/19/2016] [Indexed: 12/26/2022]
Abstract
The current study investigated the thermotolerance of Metarhizium anisopliae s.l. conidia from the commercial products Metarril® SP Organic and Metarril® WP. The efficacy of these M. anisopliae formulations against the tick Rhipicephalus sanguineus s.l. was studied in laboratory under optimum or heat-stress conditions. The products were prepared in water [Tween® 80, 0.01 % (v/v)] or pure mineral oil. Conidia from Metarril® SP Organic suspended in water presented markedly delayed germination after heating to constant 40 °C (for 2, 4, or 6 h) compared to conidia suspended in mineral oil. Metarril® SP Organic suspended in oil and exposed to daily cycles of heat-stress (40 °C for 4 h and 25 °C for 19 h for 5 consecutive days) presented relative germination of conidia ranging from 92.8 to 87.2 % from day 1 to day 5, respectively. Conversely, germination of conidia prepared in water ranged from 79.3 to 39.1 % from day 1 to day 5, respectively. Culturability of Metarril® WP decreased from 96 % when conidia were cultured for 30 min prior to heat exposure (40 °C for 4 h) to 9 % when conidia were cultured for 8 h. Tick percent control was distinctly higher when engorged females were treated with oil suspensions rather than water suspensions, even when treated ticks were exposed to heat-stress regimen. Oil-based applications protected fungal conidia against heat-stress. Although Metarril® is not registered for tick control, it may be useful for controlling R. sanguineus, especially if it is prepared in mineral oil.
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32
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Esteve-Gassent MD, Castro-Arellano I, Feria-Arroyo TP, Patino R, Li AY, Medina RF, Pérez de León AA, Rodríguez-Vivas RI. TRANSLATING ECOLOGY, PHYSIOLOGY, BIOCHEMISTRY, AND POPULATION GENETICS RESEARCH TO MEET THE CHALLENGE OF TICK AND TICK-BORNE DISEASES IN NORTH AMERICA. ARCHIVES OF INSECT BIOCHEMISTRY AND PHYSIOLOGY 2016; 92:38-64. [PMID: 27062414 PMCID: PMC4844827 DOI: 10.1002/arch.21327] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/19/2016] [Accepted: 02/20/2016] [Indexed: 06/05/2023]
Abstract
Emerging and re-emerging tick-borne diseases threaten public health and the wellbeing of domestic animals and wildlife globally. The adoption of an evolutionary ecology framework aimed to diminish the impact of tick-borne diseases needs to be part of strategies to protect human and animal populations. We present a review of current knowledge on the adaptation of ticks to their environment, and the impact that global change could have on their geographic distribution in North America. Environmental pressures will affect tick population genetics by selecting genotypes able to withstand new and changing environments and by altering the connectivity and isolation of several tick populations. Research in these areas is particularly lacking in the southern United States and most of Mexico with knowledge gaps on the ecology of these diseases, including a void in the identity of reservoir hosts for several tick-borne pathogens. Additionally, the way in which anthropogenic changes to landscapes may influence tick-borne disease ecology remains to be fully understood. Enhanced knowledge in these areas is needed in order to implement effective and sustainable integrated tick management strategies. We propose to refocus ecology studies with emphasis on metacommunity-based approaches to enable a holistic perspective addressing whole pathogen and host assemblages. Network analyses could be used to develop mechanistic models involving multihost-pathogen communities. An increase in our understanding of the ecology of tick-borne diseases across their geographic distribution will aid in the design of effective area-wide tick control strategies aimed to diminish the burden of pathogens transmitted by ticks.
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Affiliation(s)
- Maria D. Esteve-Gassent
- Department of Veterinary Pathobiology, College of Veterinary Medicine and Biomedical sciences, Texas A&M University, College Station, TX-77843, USA
| | - Ivan Castro-Arellano
- Department of Biology, College of Science and Engineering, Texas State University, San Marcos, TX-78666, USA
| | - Teresa P. Feria-Arroyo
- Department of Biology, The University of Texas Rio Grande Valley, Edinburg, TX-78539, USA
| | - Ramiro Patino
- Department of Biology, The University of Texas Rio Grande Valley, Edinburg, TX-78539, USA
| | - Andrew Y. Li
- USDA-ARS Invasive Insect Biocontrol and Behavior Laboratory, Beltsville, Maryland 20705, USA
| | - Raul F. Medina
- Department of Entomology, College of Agriculture and Life Sciences, Texas A&M University, College Station, TX-77843, USA
| | - Adalberto A. Pérez de León
- USDA-ARS Knipling-Bushland U.S. Livestock Insects Research Laboratory, and Veterinary Pest Genomics Center, Kerrville, TX-78028, USA
| | - Roger Iván Rodríguez-Vivas
- Campus de Ciencias Biológicas y Agropecuarias. Facultad de Medicina Veterinaria y Zootecnia. Km 15.5 carretera Mérida-Xmatkuil. Yucatán, México
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Flores-Villegas AL, Cabrera-Bravo M, Toriello C, Bucio-Torres MI, Salazar-Schettino PM, Córdoba-Aguilar A. Survival and immune response of the Chagas vector Meccus pallidipennis (Hemiptera: Reduviidae) against two entomopathogenic fungi, Metarhizium anisopliae and Isaria fumosorosea. Parasit Vectors 2016; 9:176. [PMID: 27012246 PMCID: PMC4806461 DOI: 10.1186/s13071-016-1453-1] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/22/2016] [Accepted: 03/15/2016] [Indexed: 11/10/2022] Open
Abstract
BACKGROUND Chagas disease is a key health problem in Latin America and is caused and transmitted by Trypanosoma cruzi and triatomine bugs, respectively. Control of triatomines has largely relied on the use pyrethroids, which has proved to be ineffective in the long term. Alternatively, the use of entomopathogenic fungi has been implemented to control triatomine bugs. These fungi are highly efficient as they induce a reduction in immune response on insects. Meccus pallidipennis is the main triatomine vector of Chagas disease in Mexico. In this work we investigated the effects of two entomopathogenic fungi, Metarhizium anisopliae and Isaria fumosorosea, on M. pallidipennis nymphs in terms of insect survival and immune response. METHODS We had an infected and a control group for each fungal species and assessed: a) insect survival during 30 days; and, b) phenoloxidase (PO) and prophenoloxidase (proPO; two key traits in insect immune response) at 24, 48, 96 and 144 h. For survival we used Kaplan-Meier survival analysis while for immune response we used factorial, repeated-measures ANOVA for each fungal species. RESULTS Animals treated with M. anisopliae died sooner than animals treated with I. fumosorosea. Infected animals showed lower PO and proPO values than sham individuals, with a clear decrease in these parameters at 24 h with no further changes after this time. CONCLUSIONS Our study widens the possibility of entomopathogenic fungi being used for triatomine control. The negative effect on PO and proPO seems mediated by a down-regulation of the triatomine immune response.
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Affiliation(s)
- A Laura Flores-Villegas
- Departamento de Microbiología y Parasitología, Facultad de Medicina, Universidad Nacional Autónoma de México, México, DF, Mexico
| | - Margarita Cabrera-Bravo
- Departamento de Microbiología y Parasitología, Facultad de Medicina, Universidad Nacional Autónoma de México, México, DF, Mexico
| | - Conchita Toriello
- Departamento de Microbiología y Parasitología, Facultad de Medicina, Universidad Nacional Autónoma de México, México, DF, Mexico
| | - Martha I Bucio-Torres
- Departamento de Microbiología y Parasitología, Facultad de Medicina, Universidad Nacional Autónoma de México, México, DF, Mexico
| | - Paz María Salazar-Schettino
- Departamento de Microbiología y Parasitología, Facultad de Medicina, Universidad Nacional Autónoma de México, México, DF, Mexico.
| | - Alex Córdoba-Aguilar
- Departamento de Ecología Evolutiva, Instituto de Ecología, Universidad Nacional Autónoma de México, Apdo. P. 70-275, Circuito Exterior, Ciudad Universitaria, 04510, Coyoacán, Distrito Federal, Mexico.
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