Results 11 to 20 of about 131,112 (207)

Tick Immune System: What Is Known, the Interconnections, the Gaps, and the Challenges

Frontiers in Immunology, 2021
Ticks are ectoparasitic arthropods that necessarily feed on the blood of their vertebrate hosts. The success of blood acquisition depends on the pharmacological properties of tick saliva, which is injected into the host during tick feeding.
Andréa C. Fogaça, Géssica Sousa, D. B. Pavanelo, E. Esteves, L. A. Martins, V. Urbanová, P. Kopáček, S. Daffre   +7 more
semanticscholar   +1 more source

Climate change impacts on ticks and tick-borne infections

Biologia, 2021
Evidence climate change is impacting ticks and tick-borne infections is generally lacking. This is primarily because, in most parts of the world, there are no long-term and replicated data on the distribution and abundance of tick populations, and the ...
P. Nuttall
semanticscholar   +1 more source

Amblyomma hebraeum is the predominant tick species on goats in the Mnisi Community Area of Mpumalanga Province South Africa and is co-infected with Ehrlichia ruminantium and Rickettsia africae

Parasites & Vectors, 2020
Background In sub-Saharan Africa, Amblyomma ticks are vectors of heartwater disease in domestic ruminants, caused by the rickettsial pathogen Ehrlichia ruminantium.
Frans Jongejan, Laura Berger, Suzanne Busser, Iris Deetman, Manon Jochems, Tiffany Leenders, Barry de Sitter, Francine van der Steen, Jeanette Wentzel, Hein Stoltsz   +9 more
doaj   +1 more source

Why Lyme disease is common in the northern US, but rare in the south: The roles of host choice, host-seeking behavior, and tick density

PLoS Biology, 2021
Lyme disease is common in the northeastern United States, but rare in the southeast, even though the tick vector is found in both regions. Infection prevalence of Lyme spirochetes in host-seeking ticks, an important component to the risk of Lyme disease,
H. Ginsberg, G. Hickling, R. Burke, N. Ogden, L. Beati, R. Lebrun, Isis M. Arsnoe, R. Gerhold, Seungeun Han, Kaetlyn Jackson, Lauren P Maestas, Teresa Moody, G. Pang, Breann Ross, E. L. Rulison, J. Tsao   +15 more
semanticscholar   +1 more source

Ticks and Tick-borne diseases in Ireland [PDF]

Irish Veterinary Journal, 2017
Throughout Europe interest in tick-borne agents is increasing, particularly with regard to those that can cause human disease. The reason for this is the apparent rise in the incidence of many tick-borne diseases (TBD's). While there has never been a national survey of ticks or TBD's in Ireland, the trend here appears to be the reverse with a decline ...
Zintl, Annetta, Moutailler, Sara, Stuart, Peter, Paredis, Linda, Dutraive, Justine, Gonzalez, Estelle, O'Connor, Jack, Devillers, Elodie, Good, Barbara, Omuireagain, Colm, de Waal, Theo, Morris, Fergal, Gray, Jeremy   +12 more
openaire   +5 more sources

The Scenario of Ticks and Tick-Borne Pathogens of Sheep on a Mediterranean Island

Microorganisms, 2022
Ticks and transmitted pathogens constitute a major concern for livestock health/welfare and productivity for the Mediterranean region, often posing an important zoonotic threat.
Anastasios Saratsis, Panagiota Ligda, Fredie Aal, Mandy Jelicic, Juliette Polgar, Myrthe de Vries, Ioannis Mastranestasis, Vincenzo Musella, Laura Rinaldi, Frans Jongejan, Smaragda Sotiraki   +10 more
doaj   +1 more source

Anti-Microbiota Vaccines Modulate the Tick Microbiome in a Taxon-Specific Manner

bioRxiv, 2021
Anti-tick microbiota vaccines have been shown to impact tick feeding but its specificity has not been demonstrated. In this study we aimed to investigate the impact of immune targeting of keystone microbiota bacteria on tick performance, and tick ...
Lourdes Mateos-Hernández, D. Obregón, Alejandra Wu-Chuang, Jennifer Mayé, Jérémie Bornères, Nicolas Versillé, J. de la Fuente, S. Díaz-Sánchez, L. Bermúdez-Humarán, E. Torres-Maravilla, A. Estrada-Peña, A. Hodžić, Ladislav Šimo, A. Cabezas-Cruz   +13 more
semanticscholar   +1 more source

Realized Correlation Tick-By-Tick [PDF]

SSRN Electronic Journal, 2007
In this paper we extend the approach of directly using all the available tick-by-tick data to the realized correlation estimation. As for the realized volatility, the presence of market microstructure can induce signiflcant bias in standard realized covariance measure computed with artiflcially regularly spaced returns.
Francesco Audrino, Fulvio Corsi, Fulvio Corsi   +2 more
openaire   +2 more sources

Surveillance of Borrelia miyamotoi-carrying ticks and genomic analysis of isolates in Inner Mongolia, China

Parasites & Vectors, 2021
Background Borrelia miyamotoi is a newly described relapsing fever spirochete transmitted by ixodid tick species. Little is known about the prevalence of B. miyamotoi infections in humans and ticks in Inner Mongolia, China. Therefore, we investigated the
Gaowa, Wulantuya, Kozue Sato, Dan Liu, Yunhong Cui, Xuhong Yin, Lihua Zhang, Hong Li, Tingfu Wang, Rongxin Liu, Lijing Wu, Saixia Lu, Ting Gao, Zitong Zhang, Minzhi Cao, Guodong Wang, Chunpu Li, Dacheng Yan, Norio Ohashi, Shuji Ando, Hiroki Kawabata   +20 more
doaj   +1 more source

Modeling Tick-by-Tick Realized Correlations [PDF]

SSRN Electronic Journal, 2008
A tree-structured heterogeneous autoregressive (tree-HAR) process is proposed as a simple and parsimonious model for the estimation and prediction of tick-by-tick realized correlations. The model can account for different time and other relevant predictors’ dependent regime shifts in the conditional mean dynamics of the realized correlation series ...
Francesco Audrino, Fulvio Corsi, Fulvio Corsi   +2 more
openaire   +6 more sources