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Experimental & Applied Acarology

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https://www.readbyqxmd.com/read/29128984/taxonomic-resolution-and-functional-traits-in-the-analysis-of-tropical-oribatid-mite-assemblages
#1
Maria A Minor, Sergey G Ermilov, Alexei V Tiunov
We analysed species-level datasets representing Oribatida assemblages along a gradient of old-growth primary tropical forests, secondary forests, and plantation forests in Dong Nai Biosphere Reserve, Vietnam. We identified patterns in abundance, species richness and species assemblages of Oribatida, then applied taxonomic sufficiency approach to the datasets. Using three levels of higher-taxon aggregation, we evaluated whether aggregated datasets are useful in identifying ecological patterns, in comparison to species-level data...
November 11, 2017: Experimental & Applied Acarology
https://www.readbyqxmd.com/read/29128983/biological-control-of-echinothrips-americanus-by-phytoseiid-predatory-mites-and-the-effect-of-pollen-as-supplemental-food
#2
Somayyeh Ghasemzadeh, Ada Leman, Gerben J Messelink
The poinsettia thrips, Echinothrips americanus Morgan, is an upcoming pest in greenhouse crops, causing serious damage in various vegetable and ornamental crops through extensive foliage feeding. We assessed which stages of E. americanus are attacked and killed by the phytoseiid predatory mites Amblyseius swirskii (Athias-Henriot), Amblydromalus limonicus (Garman and McGregor), Euseius gallicus Kreiter and Tixier and Euseius ovalis (Evans). Both the predation and oviposition rates were assessed in the laboratory to evaluate which mite species is potentially the most effective predator of E...
November 11, 2017: Experimental & Applied Acarology
https://www.readbyqxmd.com/read/29124413/assessment-of-bacterial-diversity-in-hyalomma-aegyptium-h-marginatum-and-h-excavatum-ticks-through-tag-encoded-pyrosequencing
#3
Adem Keskin, Ahmet Bursali, David E Snow, Scot E Dowd, Saban Tekin
Ticks are among the most significant human-biting ectoparasites and they play a major role in transmission of many pathogenic agents to humans. In the present study, three species of Hyalomma ticks, Hyalomma aegyptium, H. marginatum and H. excavatum, were examined for the presence of zoonotic bacteria, both male and female ticks alike. Examination of microbial diversity with tag-encoded pyrosequencing indicates that H. marginatum and H. excavatum were more diversity rich than H. aegyptium. Although numerous pathogenic and non-pathogenic bacterial genera were detected, including Acidovorax, Bacillus, Bacteroides, Bdellovibrio, Clostridium, Curvibacter, Escherichia, Flavobacterium, Limnohabitans, Paenibacillus, Ralstonia, Sarcina, Sediminibacterium, Segetibacter Stenotrophomonas and Variovorax, the predominant zoonotic bacteria represented in these ticks were genera Borrelia, Francisella, and Rickettsia...
November 9, 2017: Experimental & Applied Acarology
https://www.readbyqxmd.com/read/29119280/cross-talk-between-high-light-stress-and-plant-defence-to-the-two-spotted-spider-mite-in-arabidopsis-thaliana
#4
A K Barczak-Brzyżek, M Kiełkiewicz, P Gawroński, K Kot, M Filipecki, B Karpińska
Little is known about how plants deal with arthropod herbivores under the fluctuating light intensity and spectra which occur in natural environments. Moreover, the role of simultaneous stress such as excess light (EL) in the regulation of plant responses to herbivores is poorly characterized. In the current study, we focused on a mite-herbivore, specifically, the two-spotted spider mite (TSSM), which is one of the major agricultural pests worldwide. Our results showed that TSSM-induced leaf damage (visualized by trypan blue staining) and oviposition rate (measured as daily female fecundity) decreased after EL pre-treatment in wild-type Arabidopsis plants, but the observed responses were not wavelength specific...
November 8, 2017: Experimental & Applied Acarology
https://www.readbyqxmd.com/read/29116474/comparative-transcriptomes-and-reciprocal-best-hit-analysis-revealed-potential-pigment-genes-in-two-color-forms-of-tetranychus-urticae
#5
Yi-Dan Mo, Si-Xia Yang, Jing-Yu Zhao, Peng-Yu Jin, Xiao-Yue Hong
Tetranychus urticae Koch is a worldwide agricultural pest. There are two color forms: red and green. The molecular mechanism underlying this color variation is unknown. To elucidate the mechanism, we characterized differentially expressed pigment pathway genes shared in the transcriptomes of these two forms using RNA sequencing and reciprocal best hit analysis. Differentially expressed pigment pathway genes were determined by qRT-PCR to confirm the accuracy of RNA-Seq. The transcriptomes revealed 963 differentially expressed genes (DEGs), of which 687 DEGs were higher in the green form...
November 7, 2017: Experimental & Applied Acarology
https://www.readbyqxmd.com/read/29110171/experimental-efficacy-of-a-vaccine-against-rhipicephalus-australis
#6
Thomas Hüe, Julie Petermann, Romain Bonnefond, Isabelle Mermoud, Dewi Rantoen, Tony Vuocolo
Despite several decades of chemical use the cattle tick, Rhipicephalus australis, still represents an important threat for breeders of tick susceptible cattle under tropical conditions. The intense use of acaricides has lead to the development of multi-resistant strains of ticks and alternative means of control need to be developed to maintain control. A vaccine against ticks, based on the Boophilus microplus Bm86 protein, is one of the promising alternative means of tick control. In this investigation, an experimental vaccine was developed based on the orthologous R...
November 6, 2017: Experimental & Applied Acarology
https://www.readbyqxmd.com/read/29110170/distribution-and-host-associations-of-ixodid-ticks-collected-from-wildlife-in-florida-usa
#7
Jeffrey C Hertz, Bambi C Ferree Clemons, Cynthia C Lord, Sandra A Allan, Phillip E Kaufman
A tick survey was conducted to document tick-host associations with Florida (USA) wildlife, and to determine the relative abundance and distribution of ixodid ticks throughout the state. The survey was conducted using collection kits distributed to licensed Florida hunters as well as the examination of archived specimens from ongoing state wildlife research programs. Collected tick samples were obtained from 66% of Florida counties and were collected from nine wildlife hosts, including black bear, bobcat, coyote, deer, gray fox, Florida panther, raccoon, swine, and wild turkey...
November 6, 2017: Experimental & Applied Acarology
https://www.readbyqxmd.com/read/29110169/ticks-acari-ixodidae-infesting-some-small-mammals-from-northern-turkey-with-new-tick-host-associations-and-locality-records
#8
Adem Keskin, Ahmet Yesari Selçuk, Haluk Kefelioğlu
Ticks are obligate ectoparasites of a vast range of terrestrial vertebrates which may play an important role in the transmission of many zoonotic pathogens to humans and animals. In the current study, we performed an investigation on ticks infesting some small mammals captured from Samsun and Tokat provinces, Northern Turkey. One hundred forty-five mammalian samples belonging to four species, namely Cricetulus migratorius (n = 1), Apodemus flavicollis (n = 17), Crocidura suaveolens (n = 102) and Sorex volnuchini (n = 25), were examined for the presence of tick infestations...
November 6, 2017: Experimental & Applied Acarology
https://www.readbyqxmd.com/read/29022207/mite-diversity-acari-tetranychidae-tydeidae-iolinidae-phytoseiidae-and-within-tree-distribution-in-citrus-orchards-in-southern-spain-with-special-reference-to-eutetranychus-orientalis
#9
José Miguel Vela, Eva Wong, Josep A Jaques, Claudio Ledesma, Juan Ramón Boyero
Mite diversity of selected citrus orchards in Andalusia (southern Spain) was studied during 2002-2007. The following species were found: Eutetranychus orientalis, Tetranychus urticae, Panonychus citri (Tetranychidae), Tydeus californicus, Lorryia formosa (Tydeidae), Pronematus ubiquitus (Iolinidae), Euseius stipulatus, Typhlodromus phialatus, Neoseiulus californicus, Euseius scutalis, Phytoseiulus persimilis, Paraseiulus talbii and Neoseiulus cucumeris (Phytoseiidae). Eutetranychus orientalis was the dominant tetranychid species in orange and lemon trees, whereas T...
October 11, 2017: Experimental & Applied Acarology
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
#10
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
#11
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
#12
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
#13
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
#14
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
#15
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
#16
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
#17
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
#18
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
#19
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
#20
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
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