Entomopathogenic nematodes in pharmaceutical formulations for Rhipicephalus microplus (Acari: Ixodidae) control: In vitro evaluation of compatibility, thermotolerance, and efficiency

Publication date: Available online 18 March 2019Source: Ticks and Tick-borne DiseasesAuthor(s): Alessandra Ésther de Mendonça, Raiana Gonçalves Moreira, Maria da Penha Henriques do Amaral, Caio Márcio de Oliveira Monteiro, Valéria de Mello, Fernanda Maria Pinto Vilela, Fernanda Cristina Mendonça Homem, John Furlong, Cláudia Dolinski, Márcia Cristina de Azevedo Prata, Evelize Folly das ChagasAbstractThis work aimed to investigate candidate biological control agents against the cattle tick Rhipicephalus microplus by studying three entomopathogenic nematodes (EPN) isolates from two species, Heterorhabditis bacteriophora (isolates LPP30 and HP88) and Heterorhabditis baujardi (isolate LPP7). The study comprised the pharmacotechnical development of four test formulations, and their biological evaluation, in three stages: 1) selection of the fittest EPN isolate at 16 ± 1 °C after 120 h of incorporation in the formulations; 2) determination of the effects of temperature and incubation time on the survival of the selected isolate in formulations; 3) evaluation of the in vitro efficacy (infectivity) of the selected EPN formulations and their components against R. microplus females after 72 h exposure. H. baujardi LPP7 presented the highest survival rates in 0.1 % carboxymethyl cellulose sodium (CMC) formulations (100 % at 25 °C, up to 10 days after incorporation). At the hig...
Source: Ticks and Tick borne Diseases - Category: Zoology Source Type: research

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Publication date: Available online 22 April 2019Source: Ticks and Tick-borne DiseasesAuthor(s): Pavel Švec, Václav Hönig, Dana Zubriková, Maria Wittmann, Kurt Pfister, Libor GrubhofferAbstractResearch projects in the field of eco-epidemiology of tick-borne diseases often require extensive sampling of arthropod vectors in the field. The aim of our study was to use geographical information systems (GIS) to select appropriate sampling sites of Ixodes ricinus ticks in central European habitat for further ecological studies of vector-borne pathogens (tick-borne encephalitis virus and Borrelia burgdorfe...
Source: Ticks and Tick borne Diseases - Category: Zoology Source Type: research
This report is the first to describe CytB marker sequences of the studied species, and the first to describe COX1 marker sequences of H. aegyptium, H. excavatum, H. impeltatum and H. turanicum. The information obtained in this study may therefore be useful for future combined morphological-molecular Hyalomma characterization.
Source: Ticks and Tick borne Diseases - Category: Zoology Source Type: research
Conclusion The African continent is home to diverse populations of livestock breeds that possess extremely valuable genetic materials but which are not utilized effectively to support economic development or to meet up with increasing demand. Owing to the rich genetic resources and availability of advanced breeding technologies, genomic breeding can be used to speedup livestock development on the continent of Africa. However, the promise and usefulness of genomic tools (especially genomic selection), which have supported livestock gains in many Western countries are yet to be implemented in most of Africa; the major const...
Source: Frontiers in Genetics - Category: Genetics & Stem Cells Source Type: research
Authors: Walker MD PMID: 30997896 [PubMed - in process]
Source: Journal of Vector Borne Diseases - Category: Infectious Diseases Tags: J Vector Borne Dis Source Type: research
In conclusion, our data show for the first time the presence of TBEV in ticks and the related sero-reactivity in goats, confirming the presence of TBEV in the environment of the Canton of Ticino. Further surveillance studies will have to be conducted to follow the persistence of TBEV in this region.
Source: Ticks and Tick borne Diseases - Category: Zoology Source Type: research
Publication date: Available online 18 April 2019Source: Ticks and Tick-borne DiseasesAuthor(s): Eliza A.H. Little, John F. Anderson, Kirby C. Stafford, Lars Eisen, Rebecca J. Eisen, Goudarz MolaeiAbstractLyme disease is the most prevalent vector-borne disease in the United States. Ixodes scapularis, commonly referred to as the blacklegged tick, is the primary vector of Lyme disease spirochetes, Borrelia burgdorferi sensu lato (s.l.), in the eastern United States. Connecticut has pervasive populations of I. scapularis and remains a hotspot for Lyme disease. A primary aim of this study was to determine if passively collected...
Source: Ticks and Tick borne Diseases - Category: Zoology Source Type: research
Publication date: Available online 17 April 2019Source: Ticks and Tick-borne DiseasesAuthor(s): Sokani Sánchez-Montes, Ana Belem Isaak-Delgado, Carmen Guzmán-Cornejo, Emilio Rendón-Franco, Claudia I. Muñoz-García, Sergio Bermúdez, Jorge Morales-Diaz, Anabel Cruz-Romero, Dora Romero-Salas, Karla Dzul-Rosado, César Lugo-Caballero, Pablo Colunga-Salas, Ingeborg BeckerAbstractTicks are obligate haematophagous ectoparasites that are associated with a wide range of vertebrate hosts, among them also reptiles and amphibians. They have dynamic ecological interactions with multiple mi...
Source: Ticks and Tick borne Diseases - Category: Zoology Source Type: research
Publication date: Available online 16 April 2019Source: Ticks and Tick-borne DiseasesAuthor(s): Karla Dayane Gruhn, Maria Ogrzewalska, Tatiana Rozental, Itacir Olivio Farikoski, Carolina Blanco, Lucas de Souza Freitas, Elba Regina Sampaio de Lemos, Vânia Maria França RibeiroAbstractCapybaras (Hydrochoerus hydrochaeris Linneaus, 1766) (Rodentia: Caviidae) are important hosts for Amblyomma ticks (Acari: Ixodidae), which in turn can transmit rickettsiae to humans and animals. However, there is a scarcity of studies about ticks fauna and rickettsial infection in the Amazon region. The present study evaluated ricke...
Source: Ticks and Tick borne Diseases - Category: Zoology Source Type: research
Publication date: Available online 14 April 2019Source: Ticks and Tick-borne DiseasesAuthor(s): Silvius Frimmel, Micha Löbermann, Frerk Feldhusen, Matthias Seelmann, Karin Stiasny, Jochen Süss, Emil Christian Reisinger
Source: Ticks and Tick borne Diseases - Category: Zoology Source Type: research
In this study, we applied complementary in silico approaches to modeling how Anaplasma phagocytophilum infection modulates tick vector regulome. This proof-of-concept research provided support for the use of network analysis in the study of regulome response to infection, resulting in new information on tick-pathogen interactions and potential targets for developing interventions for the control of tick infestations and pathogen transmission. Deciphering the precise nature of circuits that shape the tick regulome in response to pathogen infection is an area of research that in the future will advance our knowledge of tick-...
Source: Frontiers in Physiology - Category: Physiology Source Type: research
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