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Experimental & Applied Acarology

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https://www.readbyqxmd.com/read/28894981/comparative-study-of-esterases-in-deltamethrin-and-diazinon-resistant-rhipicephalus-microplus-and-hyalomma-anatolicum-ticks-collected-from-the-trans-gangetic-plains-of-india
#1
Ruchi Singh Gaur, Arun Kumar Sangwan, Nirmal Sangwan, Mayukh Ghosh, Sachin Kumar
A comparative analysis of esterases in susceptible and resistant ticks revealed six types of esterases (EST-1b, EST-2b, EST-3b, EST-4b, EST-5b and EST-6b) in Rhipicephalus microplus and four types (EST-1h, EST-2h, EST-3h, EST-4h) in Hyalomma anatolicum using α-naphthyl acetate substrate. Inhibition studies with eserine sulfate, p-chloromercuribenzoate, copper sulphate and phenylmethylsulfonyl fluoride revealed a marked variation in band intensity between susceptible and resistant ticks, with the latter being more intense...
September 11, 2017: Experimental & Applied Acarology
https://www.readbyqxmd.com/read/28889342/life-cycle-of-amblyomma-mixtum-acari-ixodidae-parasitizing-different-hosts-under-laboratory-conditions
#2
Francisco Tobias Barradas Piña, Vinicius da Silva Rodrigues, Leandro de Oliveira Souza Higa, Marcos Valério Garcia, Jacqueline Cavalcante Barros, Adalberto Angel Pérez de León, Renato Andreotti
Amblyomma mixtum is a tick species in the Amblyomma cajennense complex. The known geographic range of A. mixtum extends from Texas in the USA to western Ecuador and some islands in the Caribbean. Amblyomma mixtum is a vector of disease agents of veterinary and public health importance. The objective of this study was to describe the life cycle of A. mixtum under laboratory conditions. Bovines, rabbits and sheep were infested with larvae, nymphs, and adult ticks under controlled conditions to assess several biological parameters...
September 9, 2017: Experimental & Applied Acarology
https://www.readbyqxmd.com/read/28887701/morphological-and-molecular-identification-of-rhipicephalus-boophilus-microplus-in-nigeria-west-africa-a-threat-to-livestock-health
#3
J Kamani, D A Apanaskevich, R Gutiérrez, Y Nachum-Biala, G Baneth, S Harrus
The cattle tick Rhipicephalus (Boophilus) microplus was first reported in West Africa in Ivory Coast, in 2007. Since then it has made an aggressive eastward advancement having been reported in four other West African countries: Mali, Burkina Faso, Togo and Benin. We herein report the first molecular identification of this tick species in Nigeria, West Africa, and highlight the threat it poses to livestock health. A nation-wide tick survey was conducted in 12 out of 36 states across the various agro ecological zones of Nigeria over a 1 year period (April 2014-March 2015)...
September 8, 2017: Experimental & Applied Acarology
https://www.readbyqxmd.com/read/28887650/microbial-diversity-of-the-tibetan-tick-haemaphysalis-tibetensis-acari-ixodidae
#4
Zhijun Yu, Rongrong Wang, Ningxin Li, Chunmian Zhang, Jingze Liu
The Tibetan tick Haemaphysalis tibetensis is widely distributed in the Tibetan Plateau, and is recognized as one of the primary parasites affecting domestic and wild animals. No information is available on its microbial diversity. In the current study, the microbiomes in H. tibetensis were explored using Illumina MiSeq sequencing. Results indicate that a total of 28 phyla and 38 genera were characterized from this tick, and most of the microbes were classified in the phylum Proteobacteria. Female and male H...
September 8, 2017: Experimental & Applied Acarology
https://www.readbyqxmd.com/read/28875270/molecular-evidence-of-tick-borne-pathogens-in-hyalomma-anatolicum-ticks-infesting-cattle-in-xinjiang-uygur-autonomous-region-northwestern-china
#5
Peifa Yu, Zhijie Liu, Qingli Niu, Jifei Yang, Mirza Omar Abdallah, Ze Chen, Guangyuan Liu, Jianxun Luo, Hong Yin
Although tick-borne pathogens have been widely reported in ticks in China, there is little information available on the prevalence of information in Hyalomma ticks from cattle. This study aims to determine the occurrence of pathogens in Hyalomma anatolicum collected from cattle in Xinjiang Uygur Autonomous Region, China, by PCR, sequencing and phylogenetic analysis. Borrelia burgdorferi s.s., Rickettsia massiliae and Anaplasma bovis were identified, whereas DNA of Ehrlichia species and an Anaplasma platys-like pathogen were also detected...
September 5, 2017: Experimental & Applied Acarology
https://www.readbyqxmd.com/read/28866797/susceptibility-of-euseius-concordis-mesostigmata-phytoseiidae-to-pesticides-used-in-citrus-production-systems
#6
Aline Aparecida Franco, Odimar Zanuzo Zanardi, Cynthia Renata de Oliveira Jacob, Monique Bárbara Rosa de Oliveira, Pedro Takao Yamamoto
Euseius concordis (Chant) is an important predatory mite found in citrus orchards. The toxicity of 19 pesticides used in citrus orchards on biological and population parameters of this mite was assessed. Our results indicated that formetanate hydrochloride, dimethoate and phosmet were highly harmful (100% mortality) to E. concordis. Carbosulfan, diflubenzuron, fenpropathrin, gamma-cyhalothrin, imidacloprid, lambda-cyhalothrin, lambda-cyhalothrin + thiamethoxam, mineral and vegetable oils, spinosad and thiamethoxam reduced the female's survival and/or fecundity, and were moderately harmful to E...
September 2, 2017: Experimental & Applied Acarology
https://www.readbyqxmd.com/read/28865060/gut-contents-digestive-half-lives-and-feeding-state-prediction-in-the-soil-predatory-mite-pergamasus-longicornis-mesostigmata-parasitidae
#7
Clive E Bowman
Mid- and hind-gut lumenal changes are described in the free-living predatory soil mite Pergamasus longicornis (Berlese) from a time series of histological sections scored during and after feeding on fly larval prey. Three distinct types of tangible material are found in the lumen. Bayesian estimation of the change points in the states of the gut lumenal contents over time is made using a time-homogenous first order Markov model. Exponential processes within the gut exhibit 'stiff' dynamics. A lumen is present throughout the midgut from 5 min after the start of feeding as the gut rapidly expands...
September 1, 2017: Experimental & Applied Acarology
https://www.readbyqxmd.com/read/28864886/essential-oils-of-aromatic-egyptian-plants-repel-nymphs-of-the-tick-ixodes-ricinus-acari-ixodidae
#8
Hesham R El-Seedi, Muhammad Azeem, Nasr S Khalil, Hanem H Sakr, Shaden A M Khalifa, Khalijah Awang, Aamer Saeed, Mohamed A Farag, Mohamed F AlAjmi, Katinka Pålsson, Anna-Karin Borg-Karlson
Due to the role of Ixodes ricinus (L.) (Acari: Ixodidae) in the transmission of many serious pathogens, personal protection against bites of this tick is essential. In the present study the essential oils from 11 aromatic Egyptian plants were isolated and their repellent activity against I. ricinus nymphs was evaluated Three oils (i.e. Conyza dioscoridis L., Artemisia herba-alba Asso and Calendula officinalis L.) elicited high repellent activity in vitro of 94, 84.2 and 82%, respectively. The most active essential oil (C...
September 1, 2017: Experimental & Applied Acarology
https://www.readbyqxmd.com/read/28856573/population-growth-rate-of-dry-bulb-mite-aceria-tulipae-acariformes-eriophyidae-on-agriculturally-important-plants-and-implications-for-its-taxonomic-status
#9
Agnieszka Kiedrowicz, Brian G Rector, Suzanne Lommen, Lechosław Kuczyński, Wiktoria Szydło, Anna Skoracka
Dry bulb mite (DBM), Aceria tulipae, is an economically important mite with a worldwide distribution and a broad host range. As a generalist, it is the most important eriophyoid mite attacking bulbous plants such as garlic, onion and tulip. To date, DBM has been recorded on host plants belonging to the families Liliaceae, Amaryllidaceae, Melanthiaceae and Asparagaceae. However, a precise understanding of DBM host range is lacking as it is largely based on casual records of mites on plants, some of which may include accidental hosts...
August 30, 2017: Experimental & Applied Acarology
https://www.readbyqxmd.com/read/28856544/molecular-detection-of-pathogens-in-ticks-infesting-cattle-in-nampula-province-mozambique
#10
Ana Marcília Matsimbe, Vlademiro Magaia, Gustavo Seron Sanches, Luís Neves, Emília Noormahomed, Sandra Antunes, Ana Domingos
Ticks are ectoparasites that can act as vectors of a large number of pathogens in wild and domestic animals, pets, and occasionally humans. The global threat of emerging or re-emerging tick-borne diseases supports the need for research focused in the zoonotic transmission, especially in countries like Mozambique where rural populations are in close contact with domestic animals. The present study aims to: (1) identify tick species infesting cattle from Monapo and Nacala Porto, districts of Nampula province, Mozambique; and (2) investigate the presence of pathogens in the collected ticks...
August 30, 2017: Experimental & Applied Acarology
https://www.readbyqxmd.com/read/28852943/comparative-stylostome-ultrastructure-of-hirsutiella-zachvatkini-trombiculidae-and-trombidium-holosericeum-trombidiidae-larvae
#11
Andrey B Shatrov, Magdalena Felska
Stylostomes (feeding tubes) of Hirsutiella zachvatkini (Schluger) (Trombiculidae), feeding on bank voles [Myodes glareolus (Schreber)], and of Trombidium holosericeum (L.) (Trombidiidae), feeding on larvae of Stenodemini sp. (Heteroptera, Miridae), were studied by TEM methods and on semi-thin sections. The stylostome of H. zachvatkini is a homogeneous structure of low electron density and without strict margins. It extends within the concave host epidermis, undergoing hyperplasia and hyperkeratosis. TEM does not reveal any obvious stratification in the stylostome walls...
August 29, 2017: Experimental & Applied Acarology
https://www.readbyqxmd.com/read/28852887/nanostructured-cinnamon-oil-has-the-potential-to-control-rhipicephalus-microplus-ticks-on-cattle
#12
Daiane S Dos Santos, Jhonatan P Boito, Roberto C V Santos, Priscilla M Quatrin, Aline Ferreira Ourique, João H Dos Reis, Roger R Gebert, Patrícia Glombowsky, Vanderlei Klauck, Aline A Boligon, Matheus D Baldissera, Aleksandro S Da Silva
The aim of this study was to evaluate the capacity of pure and nanostructured cinnamon oil to control the infestation and reproductive efficiency of Rhipicephalus microplus on dairy cows. In vitro (stage I)-engorged female ticks were immersed in concentrations of 1.0, 5.0 and 10% of cinnamon oil on its pure form, and 0.5, 1.0, and 5.0% of the nanostructured form. 10% cinnamon oil (pure form) showed 100% efficacy, whereas concentrations of 1 and 5% were 62 and 97% efficacious, respectively. Nanocapsules and nanoemulsions containing cinnamon oil at 5% showed 95 and 97% efficacy, respectively...
August 29, 2017: Experimental & Applied Acarology
https://www.readbyqxmd.com/read/28849543/the-first-record-of-infestation-by-a-native-tick-acari-ixodidae-on-the-australian-emu-dromaius-novaehollandiae-and-a-review-of-tick-paralysis-in-australian-birds
#13
M L Kwak, C Madden
For the first time, infestation of the Australian emu by a native tick is recorded based on an engorged adult female specimen of the southern paralysis tick (Ixodes cornuatus) taken from a captive emu at Healesville sanctuary, Victoria, Australia. Tick paralysis in Australian birds is discussed.
August 28, 2017: Experimental & Applied Acarology
https://www.readbyqxmd.com/read/28849536/diversity-of-tick-species-on-domestic-animals-in-shandong-province-china-using-dna-barcoding
#14
Ruiling Zhang, Aihua Zhao, Xuejun Wang, Zhong Zhang
Ticks are considered to be second only to mosquitoes as vectors of diseases. In recent years, severe fever with thrombocytopenia syndrome, a new emerging tick-borne disease has been detected in many areas of China, including Shandong Province, Eastern China. Here, we report the tick species diversity based on surveys between 2014 and 2016 covering 16 locations in seven cities of Shandong. Based on DNA barcoding, 1859 ticks belonging to three species were identified: Haemaphysalis longicornis, Rhipicephalus turanicus and Haemaphysalis verticalis...
August 28, 2017: Experimental & Applied Acarology
https://www.readbyqxmd.com/read/28849430/a-survey-of-ticks-acari-ixodidae-from-an-over-abundant-koala-phascolarctos-cinereus-population-in-south-eastern-australia-with-an-overview-of-the-ticks-and-mites-of-koalas
#15
M L Kwak, J Reed
Within Australia, koala over-abundance has become a serious problem in some areas resulting in significant damage to native forests through defoliation. An over-abundant Victorian koala population was surveyed for ticks in the autumn of 2016. During the survey 1036 ticks were collected from 158 koalas. All ticks collected were identified as Ixodes tasmani. Tick prevalence, infestation intensity and on-host sex ratios were calculated for the population. An overview of the ticks and mites associated with koalas in Australia is also presented...
August 28, 2017: Experimental & Applied Acarology
https://www.readbyqxmd.com/read/28849399/genetic-and-phylogenetic-analysis-of-the-ticks-from-the-sinai-massif-egypt-and-their-possible-role-in-the-transmission-of-babesia-behnkei
#16
Mohammed Alsarraf, Ewa J Mierzejewska, Eman M E Mohallal, Jerzy M Behnke, Anna Bajer
Following the description of Babesia behnkei in the region of St. Katherine, Sinai, the present study was undertaken to determine the role of local tick species as vectors of piroplasms. First we assessed the local fauna of ticks, especially species occurring on rodents, camels and encountered in the environment, and then we compared genotypes of ticks from isolated wadis. Finally, we assessed the role of local tick species as potential vectors of Babesia spp. During our expedition to the Sinai Massif in a 4-week period in August-September 2012, 393 ticks were collected, including 235 adult questing ticks collected from the environment (ground level in the wadis) and 158 engorging ticks from camels and rodents...
August 28, 2017: Experimental & Applied Acarology
https://www.readbyqxmd.com/read/28840404/the-effect-of-excluding-ungulates-on-the-abundance-of-ixodid-ticks-on-wild-rabbit-oryctolagus-cuniculus
#17
F Valcárcel, J González, J M Tercero-Jaime, A S Olmeda
Tick abundance depends heavily on host density, so reducing access to the host should reduce tick populations in a determined area. In this study we compared the Parasitic Index (PI = average number of ticks per rabbit) of two wild rabbit populations separated 16 years ago by a fence keeping ungulates from moving freely. Two areas were selected (closed and open) wherein 50 wild rabbits per area were sampled for ticks. The PI in the open area (PI = 989.62) was significantly higher than in the closed area (PI = 515...
August 24, 2017: Experimental & Applied Acarology
https://www.readbyqxmd.com/read/28840367/assessment-of-using-recombinant-ixodes-ricinus-av422-saliva-protein-for-confirmation-of-tick-bites-in-hunting-dogs-as-naturally-infested-hosts
#18
Darko Mihaljica, Dragana Marković, Željko Radulović, Albert Mulenga, Sanja Ćakić, Ratko Sukara, Zorana Milanović, Snežana Tomanović
Due to the recorded spreading of ticks in past years, a higher incidence of tick-borne diseases (TBDs) can be expected in the future in endemic areas, but can also pose an emerging public health concern in areas where they have not yet been recognized. Assessment of the exposure of vulnerable hosts to ticks would be a very helpful tool for TBD epidemiological studies, as well as for their proper managing. To confirm previous tick bites, the method of choice is detection of antibodies in host serum as markers developed against injected tick saliva proteins during feeding...
August 24, 2017: Experimental & Applied Acarology
https://www.readbyqxmd.com/read/28840366/in-vitro-feeding-of-hyalomma-lusitanicum-ticks-on-artificial-membranes
#19
J González, F Valcárcel, A Aguilar, A S Olmeda
In vitro feeding of ticks (Acari: Ixodidae) is an important means to study the biology of ticks and their vectorial capacity. Here, we have adapted the tick Hyalomma lusitanicum Koch to previously published silicone-based membranes for in vitro feeding. For comparison purposes data on pre-oviposition, oviposition and hatching from females engorged on animals were used. A total of 68 engorged females out of 169 were obtained; feeding duration and feeding behaviour were similar to that of ticks on live host animals, although the final weight achieved for membrane-fed ticks was lower than that of their animal-fed counterparts...
August 24, 2017: Experimental & Applied Acarology
https://www.readbyqxmd.com/read/28831715/influence-of-fruit-age-of-the-brazilian-green-dwarf-coconut-on-the-relationship-between-aceria-guerreronis-population-density-and-percentage-of-fruit-damage
#20
André Silva Guimarães Sousa, Poliane Sá Argolo, Manoel Guedes Correa Gondim, Gilberto José de Moraes, Anibal Ramadan Oliveira
The coconut mite, Aceria guerreronis Keifer (Acari: Eriophyidae), is one of the main coconut pests in the American, African and parts of the Asian continents, reaching densities of several thousand mites per fruit. Diagrammatic scales have been developed to standardize the estimation of the population densities of A. guerreronis according to the estimated percentage of damage, but these have not taken into account the possible effect of fruit age, although previous studies have already reported the variation in mite numbers with fruit age...
August 22, 2017: Experimental & Applied Acarology
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