storage mite
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2021 ◽  
Vol 94 ◽  
pp. 101883
Author(s):  
Patrícia Vogel ◽  
Guilherme Liberato da Silva ◽  
Isadora Zanatta Esswein ◽  
Maria Cristina Dallazen ◽  
Daiane Heidrich ◽  
...  

Insects ◽  
2021 ◽  
Vol 12 (8) ◽  
pp. 711
Author(s):  
Naomi Manu ◽  
Mark Wesley Schilling ◽  
Thomas Wesley Phillips

The fumigant pesticide methyl bromide (MB) was used for stored products, but it is now banned for most uses in many countries as an ozone-depleting substance. MB was the only pesticide used to manage the ham mite, Tyrophagus putrescentiae, which is the most significant pest of dry cured hams. Effective alternatives to MB are needed to develop integrated pest management (IPM) programs for this pest. This study evaluated plant essential oils and food-safe compounds as repellents to directly protect hams from infestation. Experiments to assess the repellency to orientation, oviposition, and population growth of mites on pieces of aged country hams were conducted. Test compounds at different concentrations were dissolved in respective solvents and compared to the solvent control. Results showed that C8910, a mixture of three short-chain fatty acids, and the sesquiterpene ketone nootkatone had repellency indices of (RI) of 85.6% and 82.3%, respectively, at a concentration of 0.1 mg/cm2, when applied to a Petri dish arena. DEET and icaridin were also tested but performed poorly with RIs below 70% even at 0.1 mg/cm2.The monoterpene alcohol geraniol had the highest RI of 96.3% at 0.04 mg/cm2. Ham pieces dipped in C8910 and nootkatone at 150 ppm each had RIs of 89.3% and 82.8%, respectively. In general, as the concentrations of test compounds increased, the numbers of eggs that were laid on these treated ham cubes decreased after the 48 h exposure time. Ham pieces dipped in different concentrations of test compounds and then inoculated with 20 adult mites showed a significant decrease in mite population growth compared to control pieces after 14 days. The results of these experiments suggest that some plant secondary metabolites and synthetic food-safe compounds could serve as potential alternatives for managing mites on hams.


2020 ◽  
Vol 25 (9) ◽  
pp. 1693-1701
Author(s):  
Xuan Su ◽  
Yu Fang ◽  
Jiao-Yang Xu ◽  
Wei-Xi Fang ◽  
Xue-Bing Zhan ◽  
...  

Mitochondrial (mt) genomes of astigmatid mites typically contain 37 genes for 13 proteins, two ribosomal RNA (rRNA) genes and 22 transfer RNA (tRNA) genes. However, two Tyrophagus mites (Tyrophagus putrescentiae and T. longior) were reported as having lost three tRNAs in their mt genomes. In this study, we sequenced the complete mitochondrial genome of Tyrophagus fanetzhangorum (14,257 bp) and found typical set of mt tRNA genes (22 tRNAs). The gene arrangement of T. fanetzhangorum is consistent with the pattern of possible common ancestor of astigmatid mites. Phylogenetic analyses were conducted using Maximum likelihood (ML) and Bayesian inference (BI) methods. Phylogenetic analysis shows that T. fanetzhangorum is more closely related to T. putrescentiae than to T. longior within the genus Tyrophagus.


2020 ◽  
Vol 29 (1) ◽  
pp. 14-21
Author(s):  
Tilman Huppertz ◽  
Irene Schmidtmann ◽  
Sven Becker ◽  
Boris Haxel
Keyword(s):  

2019 ◽  
Vol 17 (2) ◽  
pp. 57-67
Author(s):  
I.A. Akimov ◽  
L.O Kolodochka ◽  
I.V. Nebogatkin

In the Ukrainian Entomological society, there is a department that does not study insects. Its members are interested in the insects’ distant relatives, the subphylum Chelicerata, which though less diverse than insects, play a significant role in the economies of nature and humankind. A special place belongs to mites, which are a subject of acarological research. In fact, the economical factors caused this direction of research to develop into a full-fledged science, kindred to parasitology, entomology, epidemiology and other sciences. Contemporary acarology has its own objects and methods of research. It started developing at the territory of today Ukraine as early as in XIX century by efforts of scientists of neighbor countries. At the turn of the XX century, first publications appeared of bloodsucking ticks parasitizing cattle and carrying pathogens, and of plant pests. In 1918–1919, when All-Ukrainian Academy of Sciences (AUAS) was established, the faunal studies and applied research progressed too. In 1930, the Institute of zoology and biology of AUAS was established and consolidated the efforts of Ukrainian specialists aimed at studying ixodid ticks, which remained in the focus of parasitological studies in 1942–1943, when the Institute was in evacuation in Bashkiria. There, the employees of the Institute studied the transmission of encephalomyelitis of horses by ticks. After the return to Kyiv the Institute continued these studies, resulting in a volume of the edition “Fauna of Ukraine”, on ixodid ticks. In 1968, the first in Ukraine laboratory of acarology was established in the Institute, which in ten years has become a department of acarology, and a center of acarological research. In 1970, the specialists of that laboratory together with representatives of other specialized institutions (from several universities, and from Nikitsky Botanical Garden, Yalta and Odesa cities, and Zakarpattia) organized the Second All-Union Acarological Conference. The Conference shaped the further development of acarological studies, mostly focusing on the applied research of economically important taxa. The acarologists were successful in expeditions, taking samples for collections, the laboratory and industrial cultures of economically important species. Especially significant results were achieved using complex methods. Thus, in Kyiv the research touched upon the spider mites and their acarophagous enemies, utilized in a biological method of pest control, and also on storage mite pests, on predator and parasitic cheyletids, on oribatids, and free-living and parasitic gamasid mites and ixodid ticks, on the bee parasites of the genus Varroa, etc. In the Nikitsky Botanical Garden, complex research was conducted on the plant pest mites. Interesting studies were done in the universities and scientific institutions of Odesa, Lviv, Uzhorod, Donetsk, etc. All of that resulted in the increase of knowledge (published in monographs, papers and designs), and in the growing expertise of the specialists (more than 50 Candidates and Doctors of Science). Results of these works were highly appreciated by the community and given the recognition of the State Award.


Author(s):  
Haziq Emran ◽  
Christina Siew Eng Chieng ◽  
Surita Taib ◽  
Anne Catherine Cunningham

AbstractIgE sensitisation in tropical areas is under-reported. A 2 year retrospective cohort study of allergy data specific to aero and food allergens in Brunei demonstrated that specific IgE levels to house dust mite (Dermatophagoides pteronyssinus, D.farinae, Blomia tropicalis) were highest in this population and correlated with atopic dermatitis (p < 0.001). Shrimp and peanut were the most common food allergens. A dominance of house/storage mite sensitization is seen in Brunei which is consistent with other tropical countries.


2019 ◽  
Vol 57 (2) ◽  
pp. 329-335
Author(s):  
A K Ahmed ◽  
A M Kamal ◽  
N M E Mowafy ◽  
E E Hassan

Abstract Initial data on the prevalence of storage mites in dry-stored food products and estimates of the presence of mites in human stool in the city of Minia, Egypt are provided. In total, 847 samples were collected randomly from houses and retail stores between March 2017 and February 2018. In addition, 1,000 human stool samples were collected for the detection of the presence of mites. Mites were extracted from 285 of 840 (33.9%) samples, and mite contamination was found to be most prevalent in wheat flour (73.3%). In total, 11 mite species belonging to six families were identified, with the pest species Tyrophagus putrescentiae (Schrank) (Acari: Acaridae) (TP) being the most prevalent (91.2% of samples). The seasonal density distribution showed the highest storage mite density in March–April, followed by October, and the lowest in January. In addition, mites were detected in 87 (8.7%) human stool samples, with significant associations between certain occupations and some personal characteristics. Therefore, more attention needs to be paid to intestinal acariasis arising from mite infestation of dry-stored food products.


2019 ◽  
Vol 29 (1) ◽  
pp. 1-8 ◽  
Author(s):  
Tilman Huppertz ◽  
Irene Schmidtmann ◽  
S. Becker ◽  
Boris R. Haxel
Keyword(s):  

2019 ◽  
Vol 24 (5) ◽  
pp. 857
Author(s):  
Nguyen Duc Tung ◽  
Anh The Than ◽  
Wim Jonckheere ◽  
Viet Ha Nguyen ◽  
Thomas Van Leeuwen ◽  
...  

Development, survival and reproduction of Proprioseiopsis lenis (Corpuz and Rimando) (Acari: Phytoseiidae), a predatory mite distributed in parts of Southeast Asia, were assessed on different foods. These included four pollens (Typha latifolia, Luffa aegyptiaca, Zea mays, Ricinus communis), the natural prey Tetranychus urticae (mixed stages) and Frankliniella occidentalis (first-second instars), and the storage mite Carpoglyphus lactis (mixed stages) as a factitious prey. The total immature developmental time of females fed at 27 °C on T. latifolia pollen (4.1 days) or C. lactis (4.0 days) was significantly shorter than that of those offered Z. mays pollen (5.3 days), R. communis pollen (6.7 days) or T. urticae (4.3 days). Nearly 60% of the predators fed on R. communis pollen died in the immature stages and adult females failed to produce eggs. The daily oviposition rate of P. lenis reared on C. lactis (2.9 eggs/female/day), T. latifolia pollen (2.7 eggs/female/day) and F. occidentalis (2.6 eggs/female/day) was significantly higher than that of females maintained on the other diets. Total fecundity of females offered C. lactis (37.3 eggs/female) was highest, followed by F. occidentalis (26.5 eggs/female), T. urticae, L. aegyptiaca pollen, and T. latifolia pollen and was lowest on Z. mays pollen (7.4 eggs/female). The intrinsic rates of increase (rm) were highest on C. lactis (0.293), T. latifolia pollen (0.285) and T. urticae (0.283), followed by F. occidentalis (0.260) and L. aegyptiaca pollen (0.233) and were lowest on Z. mays pollen (0.115). Our findings suggest that P. lenis may have potential as a natural enemy to be used in augmentative biological control of spider mites and thrips in Southeast Asian greenhouse or field crops. The predator can be reared on the storage mite C. lactis and can also survive on several pollens in case prey is scarce or absent in the crop.


2019 ◽  
Vol 77 (4) ◽  
pp. 511-525 ◽  
Author(s):  
Gabriel Reboux ◽  
Benoit Valot ◽  
Steffi Rocchi ◽  
Emeline Scherer ◽  
Sandrine Roussel ◽  
...  

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