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Wulff JP, Temeyer KB, Tidwell JP, Schlechte KG, Lohmeyer KH, Pietrantonio PV. Periviscerokinin (Cap 2b; CAPA) receptor silencing in females of Rhipicephalus microplus reduces survival, weight and reproductive output. Parasit Vectors 2022; 15:359. [PMID: 36203198 PMCID: PMC9535995 DOI: 10.1186/s13071-022-05457-7] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/24/2022] [Accepted: 08/24/2022] [Indexed: 11/10/2022] Open
Abstract
BACKGROUND The cattle fever tick, Rhipicephalus (Boophilus) microplus, is a vector of pathogens causative of babesiosis and anaplasmosis, both highly lethal bovine diseases that affect cattle worldwide. In Ecdysozoa, neuropeptides and their G-protein-coupled receptors play a critical integrative role in the regulation of all physiological processes. However, the physiological activity of many neuropeptides is still unknown in ticks. Periviscerokinins (CAP2b/PVKs) are neuropeptides associated with myotropic and diuretic activities in insects. These peptides have been identified only in a few tick species, such as Ixodes ricinus, Ixodes scapularis and R. microplus, and their cognate receptor only characterized for the last two. METHODS Expression of the periviscerokinin receptor (Rhimi-CAP2bR) was investigated throughout the developmental stages of R. microplus and silenced by RNA interference (RNAi) in the females. In a first experiment, three double-stranded (ds) RNAs, named ds680-805, ds956-1109 and ds1102-1200, respectively, were tested in vivo. All three caused phenotypic effects, but only the last one was chosen for subsequent experiments. Resulting RNAi phenotypic variables were compared to those of negative controls, both non-injected and dsRNA beta-lactamase-injected ticks, and to positive controls injected with beta-actin dsRNA. Rhimi-CAP2bR silencing was verified by quantitative reverse-transcriptase PCR in whole females and dissected tissues. RESULTS Rhimi-CAP2bR transcript expression was detected throughout all developmental stages. Rhimi-CAP2bR silencing was associated with increased female mortality, decreased weight of surviving females and of egg masses, a delayed egg incubation period and decreased egg hatching (P < 0.05). CONCLUSIONS CAP2b/PVKs appear to be associated with the regulation of female feeding, reproduction and survival. Since the Rhimi-CAP2bR loss of function was detrimental to females, the discovery of antagonistic molecules of the CAP2b/PVK signaling system should cause similar effects. Our results point to this signaling system as a promising target for tick control.
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Affiliation(s)
- Juan P. Wulff
- Department of Entomology, Texas A&M University, College Station, TX 77843-2475 USA
| | - Kevin B. Temeyer
- Knipling-Bushland U.S. Livestock Insects Research Laboratory and Veterinary Pest Genomics Center, United States Department of Agriculture–Agricultural Research Service, 2700 Fredericksburg Road, Kerrville, TX 78028-9184 USA
| | - Jason P. Tidwell
- Cattle Fever Tick Research Laboratory, United States Department of Agriculture–Agricultural Research Service, 22675 N. Moorefield Rd. Building 6419, Edinburg, TX 78541-5033 USA
| | - Kristie G. Schlechte
- Knipling-Bushland U.S. Livestock Insects Research Laboratory and Veterinary Pest Genomics Center, United States Department of Agriculture–Agricultural Research Service, 2700 Fredericksburg Road, Kerrville, TX 78028-9184 USA
| | - Kimberly H. Lohmeyer
- Knipling-Bushland U.S. Livestock Insects Research Laboratory and Veterinary Pest Genomics Center, United States Department of Agriculture–Agricultural Research Service, 2700 Fredericksburg Road, Kerrville, TX 78028-9184 USA
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Monteiro C, Lage TCDA, Marchesini P, Vale L, Perinotto WMDS, Lopes WDZ, Fernandes SA, Bittencourt VREP, Furlong J, Prata MCDA. Combination of entomopathogenic nematodes with acaricides or essential oil of Lippia triplinervis against Rhipicephalus microplus (Acari: Ixodidae). Vet Parasitol Reg Stud Reports 2021; 23:100526. [PMID: 33678380 DOI: 10.1016/j.vprsr.2020.100526] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/30/2020] [Revised: 12/18/2020] [Accepted: 12/22/2020] [Indexed: 11/18/2022]
Abstract
This study aimed to evaluate the combination effect of Heterorhabditis bacteriophora HP88 and H. indica LPP1, with the acaricides deltamethrin, amitraz and chlorfenvinphos, and the essential oil (EO) of Lippia triplinervis, against engorged females of Rhipicephalus microplus. In order to verify the effect of acaricides and EO, the adult immersion test was used, and in the groups treated only with entomopathogenic nematodes (EPNs), 150 infective juveniles were used per female. In the treatments with nematodes in combination with the acaricides or EO, the females were immersed in the solutions (acaricide or EO) and then transferred to Petri dishes for application of the nematodes. The treatment with acaricides resulted in a control percentage lower than 70%, except in the group treated with chlorfenvinphos in the second experiment (84.3%). The control percentage was 73% for L. triplinervis EO, and greater than 90% in all the groups treated with nematodes. For treatments with EPNs combined with the acaricides or EO, the efficacy was greater than 95% (except for deltamethrin + HP88), and reached 100% in the treatment with LPP1 + amitraz. It can be concluded that the EPNs at the concentrations tested were compatible with the acaricides deltamethrin, amitraz and chlorfenvinphos, and with the EO of L. triplinervis. These combinations enhance the effect of these control agents.
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Affiliation(s)
- Caio Monteiro
- Instituto de Patologia Tropical e Saúde Pública, Universidade Federal de Goiás, Rua 235, s/n, Setor Universitário, Goiânia, Goiás CEP: 74605-050, Brazil; Programa de Pós-graduação em Ciências Animal, Universidade Federal de Goiás, Avenida Esperança, s/n, Campus Samambaia, Goiânia, Goiás CEP: 74.690-900, Brazil
| | - Tiago Coelho de Assis Lage
- Grupo de Química Supramolecular e Biomimética (GQSB), Departamento de Química, Universidade Federal de Viçosa (UFV), Campus Universitário, Avenida P.H. Rolfs, s/n, Viçosa, Minas Gerais CEP: 36570-900, Brazil
| | - Paula Marchesini
- Programa de Pós-graduação em Ciências Veterinárias, Universidade Federal Rural do Rio de Janeiro (UFRRJ), Rodovia BR 465, Seropédica, Rio de Janeiro CEP: 23890-000, Brazil
| | - Letícia Vale
- Programa de Pós-graduação em Ciências Animal, Universidade Federal de Goiás, Avenida Esperança, s/n, Campus Samambaia, Goiânia, Goiás CEP: 74.690-900, Brazil
| | - Wendell Marcelo de Souza Perinotto
- Centro de Ciências Agrárias, Ambientais e Biológica, Universidade Federal do Recôncavo da Bahia, Rua Rui Barbosa, 710, Cruz das Almas, Bahia CEP: 44380-000, Brazil.
| | - Welber Daniel Zanetti Lopes
- Instituto de Patologia Tropical e Saúde Pública, Universidade Federal de Goiás, Rua 235, s/n, Setor Universitário, Goiânia, Goiás CEP: 74605-050, Brazil; Programa de Pós-graduação em Ciências Animal, Universidade Federal de Goiás, Avenida Esperança, s/n, Campus Samambaia, Goiânia, Goiás CEP: 74.690-900, Brazil
| | - Sergio Antônio Fernandes
- Grupo de Química Supramolecular e Biomimética (GQSB), Departamento de Química, Universidade Federal de Viçosa (UFV), Campus Universitário, Avenida P.H. Rolfs, s/n, Viçosa, Minas Gerais CEP: 36570-900, Brazil
| | - Vânia Rita Elias Pinheiro Bittencourt
- Programa de Pós-graduação em Ciências Veterinárias, Universidade Federal Rural do Rio de Janeiro (UFRRJ), Rodovia BR 465, Seropédica, Rio de Janeiro CEP: 23890-000, Brazil
| | - John Furlong
- Laboratório de Parasitologia da Embrapa Gado de Leite (Embrapa CNPGL), Rua Eugênio do Nascimento, 610, Bairro Dom Bosco, Juiz de Fora, Minas Gerais CEP: 36038-330, Brazil
| | - Márcia Cristina de Azevedo Prata
- Laboratório de Parasitologia da Embrapa Gado de Leite (Embrapa CNPGL), Rua Eugênio do Nascimento, 610, Bairro Dom Bosco, Juiz de Fora, Minas Gerais CEP: 36038-330, Brazil
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Gross AD, Temeyer KB, Day TA, Pérez de León AA, Kimber MJ, Coats JR. Interaction of plant essential oil terpenoids with the southern cattle tick tyramine receptor: A potential biopesticide target. Chem Biol Interact 2016; 263:1-6. [PMID: 27986436 DOI: 10.1016/j.cbi.2016.12.009] [Citation(s) in RCA: 24] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/07/2016] [Revised: 11/17/2016] [Accepted: 12/12/2016] [Indexed: 11/29/2022]
Abstract
An outbreak of the southern cattle tick, Rhipicephalus (Boophilus) microplus, (Canestrini), in the United States would have devastating consequences on the cattle industry. Tick populations have developed resistance to current acaricides, highlighting the need to identify new biochemical targets along with new chemistry. Furthermore, acaricide resistance could further hamper control of tick populations during an outbreak. Botanically-based compounds may provide a safe alternative for efficacious control of the southern cattle tick. We have developed a heterologous expression system that stably expresses the cattle tick's tyramine receptor with a G-protein chimera, producing a system that is amenable to high-throughput screening. Screening an in-house terpenoid library, at two screening concentrations (10 μM and 100 μM), has identified four terpenoids (piperonyl alcohol, 1,4-cineole, carvacrol and isoeugenol) that we believe are positive modulators of the southern cattle tick's tyramine receptor.
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Affiliation(s)
- Aaron D Gross
- Pesticide Toxicology Laboratory, Department of Entomology, Iowa State University of Science and Technology, Ames, IA, 50011, USA; Department of Biomedical Science, Iowa State University of Science and Technology, Ames, IA, 50011, USA
| | - Kevin B Temeyer
- Knipling-Bushland United States Livestock Insects Research Laboratory and Veterinary Pest Genomics Center, United States Department of Agriculture-Agricultural Research Service, Kerrville, TX, 78028, USA
| | - Tim A Day
- Department of Biomedical Science, Iowa State University of Science and Technology, Ames, IA, 50011, USA
| | - Adalberto A Pérez de León
- Knipling-Bushland United States Livestock Insects Research Laboratory and Veterinary Pest Genomics Center, United States Department of Agriculture-Agricultural Research Service, Kerrville, TX, 78028, USA
| | - Michael J Kimber
- Department of Biomedical Science, Iowa State University of Science and Technology, Ames, IA, 50011, USA
| | - Joel R Coats
- Pesticide Toxicology Laboratory, Department of Entomology, Iowa State University of Science and Technology, Ames, IA, 50011, USA.
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Gomes LVC, Lopes WDZ, Teixeira WFP, Maciel WG, Cruz BC, Felippelli G, Buzzulini C, Soares VE, de Melo DP, Bichuette MA, Gonçalves Junior G, da Costa AJ. Population dynamics and evaluation of the partial selective treatment of crossbreed steers naturally infested with Rhipicephalus (Boophilus) microplus in a herd from the state of Minas Gerais in Brazil. Vet Parasitol 2016; 220:72-6. [PMID: 26995724 DOI: 10.1016/j.vetpar.2016.02.029] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/25/2015] [Revised: 02/22/2016] [Accepted: 02/26/2016] [Indexed: 11/29/2022]
Abstract
The present study aimed to evaluate the population dynamics of Rhipicephalus (Boophilus) microplus over a period of 13 months on a rural property located in the state of Minas Gerais in southeastern Brazil. Animals were treated for ticks indoors by whole body spraying when R. (B.) microplus had an average count equal or more than 30 ticks. The study also evaluated the possibility of a partial selective treatment for bovines to control R. (B.) microplus in which only a percentage of the population would be treated (specifically those bovines with tick counts of ≥20. Moreover, we examined the percentage of the population of R. (B.) microplus present on experimental bovines that did not come into contact with the chemical compounds used in the partial selective treatment. We concluded that in this particular region of Brazil, the crossbreed steers support up to five R. (B.) microplus generations per year and that the number of generations was primarily affected by the pluviometric precipitation. We sprayed the bovines with chemicals seven times during the course of the study. The results of the partial selective treatment method revealed that during the rainy and the dry periods, 42.1% to 60.0% and 61.9% to 79.2% of the animals, respectively, fulfilled the criteria to receive a chemical treatment to reduce the number of cattle ticks. In consideration of the need to slow the development of tick resistance with the chemical compounds used in the spraying treatment, the results showed that the percentage of animals that did not require treatment is not relevant. This was evidenced by the result that bovines that presented tick counts of ≥20 during the dry and rainy periods represented 91.5% and 90.6% of the total recorded R. (B.) microplus populations, respectively. Only 8.7% of the tick population remained free from exposure to acaricides during the 13 months of the study, which is an important point when considering the adoption of the partial selective treatment method. Future studies with larger herds must be conducted on these topics; however, our results suggest that the partial selective treatment method most likely will not slow the development of resistance in this R. (B.) microplus population against the chemical compound used in this study.
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Affiliation(s)
- Lucas Vinicius Costa Gomes
- Faculdade de Ciências Agrárias e Veterinárias, UNESP/CPPAR, Access route Prof. Paulo Donatto Castellane, CEP: 14884-900 Jaboticabal, São Paulo, Brazil
| | - Welber Daniel Zanetti Lopes
- Faculdade de Ciências Agrárias e Veterinárias, UNESP/CPPAR, Access route Prof. Paulo Donatto Castellane, CEP: 14884-900 Jaboticabal, São Paulo, Brazil; Instituto de Patologia Tropical e Saúde Pública, Universidade Federal de Goiás, Goiânia, GO 74605050, Brazil.
| | - Weslen Fabricio Pires Teixeira
- Faculdade de Ciências Agrárias e Veterinárias, UNESP/CPPAR, Access route Prof. Paulo Donatto Castellane, CEP: 14884-900 Jaboticabal, São Paulo, Brazil
| | - Willian Giquelin Maciel
- Faculdade de Ciências Agrárias e Veterinárias, UNESP/CPPAR, Access route Prof. Paulo Donatto Castellane, CEP: 14884-900 Jaboticabal, São Paulo, Brazil
| | - Breno Cayeiro Cruz
- Faculdade de Ciências Agrárias e Veterinárias, UNESP/CPPAR, Access route Prof. Paulo Donatto Castellane, CEP: 14884-900 Jaboticabal, São Paulo, Brazil
| | - Gustavo Felippelli
- Faculdade de Ciências Agrárias e Veterinárias, UNESP/CPPAR, Access route Prof. Paulo Donatto Castellane, CEP: 14884-900 Jaboticabal, São Paulo, Brazil
| | - Carolina Buzzulini
- Faculdade de Ciências Agrárias e Veterinárias, UNESP/CPPAR, Access route Prof. Paulo Donatto Castellane, CEP: 14884-900 Jaboticabal, São Paulo, Brazil
| | - Vando Edésio Soares
- Faculdade de Ciências Agrárias e Veterinárias, UNESP/CPPAR, Access route Prof. Paulo Donatto Castellane, CEP: 14884-900 Jaboticabal, São Paulo, Brazil; UNICASTELO-Universidade Camilo Castelo Branco, Brazil
| | - Daniel Pacheco de Melo
- Faculdade de Ciências Agrárias e Veterinárias, UNESP/CPPAR, Access route Prof. Paulo Donatto Castellane, CEP: 14884-900 Jaboticabal, São Paulo, Brazil
| | - Murilo Abud Bichuette
- Faculdade de Ciências Agrárias e Veterinárias, UNESP/CPPAR, Access route Prof. Paulo Donatto Castellane, CEP: 14884-900 Jaboticabal, São Paulo, Brazil
| | - Geraldo Gonçalves Junior
- Faculdade de Ciências Agrárias e Veterinárias, UNESP/CPPAR, Access route Prof. Paulo Donatto Castellane, CEP: 14884-900 Jaboticabal, São Paulo, Brazil
| | - Alvimar José da Costa
- Faculdade de Ciências Agrárias e Veterinárias, UNESP/CPPAR, Access route Prof. Paulo Donatto Castellane, CEP: 14884-900 Jaboticabal, São Paulo, Brazil
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Gross AD, Temeyer KB, Day TA, Pérez de León AA, Kimber MJ, Coats JR. Pharmacological characterization of a tyramine receptor from the southern cattle tick, Rhipicephalus (Boophilus) microplus. Insect Biochem Mol Biol 2015; 63:47-53. [PMID: 25958152 DOI: 10.1016/j.ibmb.2015.04.008] [Citation(s) in RCA: 26] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/16/2015] [Revised: 04/21/2015] [Accepted: 04/27/2015] [Indexed: 06/04/2023]
Abstract
The southern cattle tick (Rhipicephalus (Boophilus) microplus) is a hematophagous external parasite that vectors the causative agents of bovine babesiosis or cattle tick fever, Babesia bovis and B. bigemina, and anaplasmosis, Anaplasma marginale. The southern cattle tick is a threat to the livestock industry in many locations throughout the world. Control methods include the use of chemical acaricides including amitraz, a formamidine insecticide, which is proposed to activate octopamine receptors. Previous studies have identified a putative octopamine receptor from the southern cattle tick in Australia and the Americas. Furthermore, this putative octopamine receptor could play a role in acaricide resistance to amitraz. Recently, sequence data indicated that this putative octopamine receptor is probably a type-1 tyramine receptor (TAR1). In this study, the putative TAR1 was heterologously expressed in Chinese hamster ovary (CHO-K1) cells, and the expressed receptor resulted in a 39-fold higher potency for tyramine compared to octopamine. Furthermore, the expressed receptor was strongly antagonized by yohimbine and cyproheptadine, and mildly antagonized by mianserin and phentolamine. Tolazoline and naphazoline had agonistic or modulatory activity against the expressed receptor, as did the amitraz metabolite, BTS-27271; however, this was only observed in the presence of tyramine. The southern cattle tick's tyramine receptor may serve as a target for the development of anti-parasitic compounds, in addition to being a likely target of formamidine insecticides.
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Affiliation(s)
- Aaron D Gross
- Pesticide Toxicology Laboratory, Department of Entomology, Iowa State University of Science and Technology, Ames IA 50011, USA; Department of Biomedical Science, Iowa State University of Science and Technology, Ames IA 50011, USA
| | - Kevin B Temeyer
- Knipling-Bushland United States Livestock Insects Research Laboratory and Veterinary Pest Genomics Center, United States Department of Agriculture-Agricultural Research Service, Kerrville, TX 78028, USA
| | - Tim A Day
- Department of Biomedical Science, Iowa State University of Science and Technology, Ames IA 50011, USA
| | - Adalberto A Pérez de León
- Knipling-Bushland United States Livestock Insects Research Laboratory and Veterinary Pest Genomics Center, United States Department of Agriculture-Agricultural Research Service, Kerrville, TX 78028, USA
| | - Michael J Kimber
- Department of Biomedical Science, Iowa State University of Science and Technology, Ames IA 50011, USA
| | - Joel R Coats
- Pesticide Toxicology Laboratory, Department of Entomology, Iowa State University of Science and Technology, Ames IA 50011, USA.
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