scholarly journals Diversity of House Dust Mite Species in Xishuangbanna Dai, a Tropical Rainforest Region in Southwest China

2015 ◽  
Vol 2015 ◽  
pp. 1-6 ◽  
Author(s):  
Jing-Miao Yu ◽  
Qing-Hua Luo ◽  
Jin-Lu Sun ◽  
Cun-Lian Shi ◽  
Jia Yin ◽  
...  
Keyword(s):  
Significant Variation ◽  
Tropical Rainforest ◽  
Southwest China ◽  
Mite Species ◽  
Dust Mites ◽  
Tyrophagus Putrescentiae ◽  
Species Determination ◽  
Blomia Tropicalis ◽  
Dust Mite ◽  
Mite Family

Purpose. To survey the species diversity of home dust mites (HDM) in Xishuangbanna, a tropical rainforest region in Southwest China.Methods. From August 2010 to January 2011, mite-allergic patients and healthy controls were invited to participate. Dust samples from the patients’ homes were collected, and mites in the samples were isolated. Permanent slides were prepared for morphologically based species determination.Results. In total, 6316 mite specimens of morphologically identifiable species were found in 233 dust samples taken from 41 homes. The result shows that the mite family of Pyroglyphidae occupied the highest percentage of the total amount of mites collected, followed by Cheyletidae family. The most common adult Pyroglyphidae mites wereDermatophagoides(D.)farinae,D. pteronyssinus, andD. siboney. The most common mites found from other families wereBlomia tropicalis,Tyrophagus putrescentiae, andAleuroglyphus ovatus. Four main allergenic dust mite speciesD. farinae,D. pteronyssinus,D. siboney, andBlomia tropicaliswere found to be coinhabiting in 6/41 homes.Conclusion. The HDM population in homes in Xishuangbanna, a tropical rainforest region in Southwest China, has its own characteristics. It has rich dust mite species and the dust mite densities do not show significant variation across seasons.

Sensitivity in allergic asthmatic subjects towards house dust mite allergens

2021 ◽  
Vol 26 (1) ◽  
pp. 75-84
Author(s):  
Amandeep Kaur Dhaliwal ◽  
Devinder Singh ◽  
Ramanpreet Kaur Randhawa ◽  
Atinderpal Singh
Keyword(s):  
Allergic Asthma ◽  
House Dust ◽  
House Dust Mite ◽  
Specific Ige ◽  
Mite Species ◽  
House Dust Mites ◽  
Total Serum ◽  
Dust Mites ◽  
Allergic Asthmatic ◽  
Dust Mite

Asthma is a common problem that affects about 20 million peoples in India and can be often under-diagnosed or misdiagnosed. It can be allergic or non-allergic though the former type is more common and prevalent. Allergic asthma can be triggered by many allergens and house dust mites (HDM) are one of the common indoor allergens. The present study emphasizes the significance of house dust mites in allergic asthmatic subjects which is based on 115 asthmatic subjects in Punjab, India. For the quantification and the estimation of total serum Immunoglobulin E and HDM specific IgE, a mixture of 14 allergens and a mixture of two mite allergens viz. Dermatophagoides pteronyssinus and D. farinae were used respectively. Total and specific IgE levels were detected on ImmunoCAP Phadia 100. A statistically significant correlation between total and HDM specific IgE levels of 115 asthmatic subjects was found as compared to control group of 30 non-allergic individuals. The specific IgE levels of 54.78% subjects against the allergen of two mite species were found to be positive. Dust samples were taken from various localities of the houses to identify the diversity of house dust mites which were responsible for allergic asthma. Five common house dust mite species viz. D. pteronyssinus Trouessart, D. farinae Hughes, D. microceras Griffiths and Cunnington, D. aureliani Fain and Euroglyphus maynei Cooreman were identified from the dust. The present study observed that total IgE levels were higher with higher specific IgE levels against the mixture of two mite allergens viz. D. pteronyssinus and D. farinae in the blood serum.  D. pteronyssinus was the most abundant and prevalent mite species followed by D. farinae. Therefore, present study concluded that HDM specific IgE levels against the mite allergen of D. pteronyssinus and D. farinae in the serum of allergic asthmatic subjects were found to be higher because of the higher prevalence of these two mites (D. pteronyssinus i.e. 69.80% and D. farinae i.e. 20.72%) in the house of allergic asthmatic subjects as compared to other identified mites.

scholarly journals Draft Genome Sequence of Dermatophagoides pteronyssinus, the European House Dust Mite

2017 ◽  
Vol 5 (32) ◽  
Author(s):  
Rose Waldron ◽  
Jamie McGowan ◽  
Natasha Gordon ◽  
Charley McCarthy ◽  
E. Bruce Mitchell ◽  
...  
Keyword(s):  
Genome Sequence ◽  
Gene Prediction ◽  
Draft Genome ◽  
Dermatophagoides Pteronyssinus ◽  
Mite Species ◽  
Draft Genome Sequence ◽  
Comparative Genomic ◽  
Genomic Analyses ◽  
Dust Mite ◽  
Functional Analyses

ABSTRACT Dermatophagoides pteronyssinus is the European dust mite and a major source of human allergens. Here, we present the first draft genome sequence of the mite, as well as the ab initio gene prediction and functional analyses that will facilitate comparative genomic analyses with other mite species.

scholarly journals House Dust Mites in One of Indonesian Detention Center in 2020

Biomedika ◽  
2021 ◽  
Vol 13 (2) ◽  
pp. 98-103
Author(s):  
Ajrina Malia ◽  
Makhabbah Jamilatun ◽  
Aminah Aminah
Keyword(s):  
House Dust ◽  
Descriptive Study ◽  
Dermatophagoides Pteronyssinus ◽  
House Dust Mites ◽  
Dust Mites ◽  
Dermatophagoides Farinae ◽  
Detention Center ◽  
Home Furnishings ◽  
Dust Mite ◽  
Flotation Method

House dust mite was one of the most common allergens in homes around the world and associated with manifestations of allergies of skin and respiratory tract such as bronchial asthma, allergic rhinitis, and atopic dermatitis. This arthropod was commonly found on carpets, mattresses, children's toys, and other home furnishings. This study was aimed to identify and quantify the number of Dermatophagoides spp in Detention Center. This descriptive study was conducted using flotation method on 52 samples of mattress dust collected in February 2020. The results showed that 49 out of 52 mattress dust samples were positive of Dermatophagoidesspp..Of all Dermatophagoides spp, there were Dermatophagoides pteronyssinus (71.2%) and Dermatophagoides farinae (28.8%). In conclusion, this study found two species of Dermatophagoides spp. in Detention Center and suggested that the fascility maintain the cleanliness of the mattress by drying the mattress and changing the sheets at least once a week.

Mites in dried figs of Turkey: diversity, species composition and density

2019 ◽  
Vol 24 (6) ◽  
pp. 992-997 ◽  
Author(s):  
Hulya Dizlek ◽  
Mehmet Karagoz ◽  
Farid Faraji ◽  
Ibrahim Cakmak
Keyword(s):  
Species Composition ◽  
Mite Species ◽  
Predatory Mite ◽  
Infestation Rate ◽  
Pest Species ◽  
Tyrophagus Putrescentiae ◽  
Acarus Siro ◽  
Blattisocius Tarsalis ◽  
Cheyletus Eruditus ◽  
Over Time

This study was conducted to determine mite species in dried figs in Aydin, Turkey between August 2014 and November 2016. A total of 141 dried fig samples were taken from producers’ storage, commercial storages and fig processing factories in Buharkent, Germencik, Incirliova, Kocarli, Kosk, Kuyucak, Merkez, Nazilli, Sultanhisar and Yenipazar districts. In addition, 24 dried fig samples were kept in storage for 8 months and the changes in mite species composition and their densities in stored figs were determined. As a result, 8 mite species belonging to 3 orders and 5 families were identified from the dried figs. Acarus siro L., Carpoglyphus lactis (L.), Glycyphagus destructor (Schrank), G. domesticus (De Geer) and Tyrophagus putrescentiae (Schrank) as pest species, and Blattisocius tarsalis (Berlese), B. mali (Oudemans) and Cheyletus eruditus (Schrank) as predatory mite species were found. Out of 141 samples, 133 were infested with mites and the infestation ratio was 94.3%. Tyrophagus putrescentiae was the most common pest species with an infestation rate of 72.3%, followed by C. lactis with 34.8%, A. siro, G. destructor and G. domesticus with 0.7% contamination, respectively. Carpoglyphus lactis was found to have the highest density with 10,488 individuals/kg in contaminated fig samples. Blattisocius tarsalis was the most common predatory mite species with an infestation rate of 77.3%. Blattisocius mali and C. eruditus were found in 9.2% and 4.3% of dried figs, respectively. This study showed that the dried fig samples kept in storage were always vulnerable to contamination with mites. Mite species composition and their densities also fluctuated over time.

A new feather mite species of the genus Neumannella Trouessart, 1916 (Analgoidea, Dermoglyphidae) from the Red-winged Tinamou Rhynchotus rufescens (Temminck, 1815) (Aves, Tinamiformes) with remarks to the evolution of host-parasite associations of the genus

2014 ◽  
Vol 59 (2) ◽  
Author(s):  
Jacek Dabert
Keyword(s):  
New Species ◽  
Evolutionary History ◽  
Morphological Characters ◽  
Mite Species ◽  
Feather Mite ◽  
History Of ◽  
Host Parasite ◽  
Reconciliation Method ◽  
A New Species ◽  
Mite Family

AbstractNeumannella skorackii, a new species of the feather mite family Dermoglyphidae (Acari, Astigmata) is described from the Red-winged Tinamou Rhynchotus rufescens (Temminck, 1815) (Aves, Tinamiformes) from Paraguay and a key to all known species of the genus is provided. The phylogenetic relationships (MP analysis of 25 morphological characters) between Neumannella species along with the evolutionary history of host-parasite associations revealed by Jungle reconciliation method are reconstructed. Relatively low cospeciation contribution to the recent host-parasite associations is discovered.

Mite fauna associated with bird nests in Southern Brazil

2018 ◽  
Vol 23 (3) ◽  
pp. 426 ◽  
Author(s):  
Darliane Evangelho Silva ◽  
Guilherme Liberato Da Silva ◽  
Joseane Moreira Do Nascimento ◽  
Noeli Juarez Ferla
Keyword(s):  
Wild Bird ◽  
Dermatophagoides Pteronyssinus ◽  
Mite Species ◽  
Southern Brazil ◽  
Tyrophagus Putrescentiae ◽  
Urban Zone ◽  
Rural And Urban ◽  
Rural Zone ◽  
Veterinary Importance ◽  
Ornithonyssus Bursa

Interactions between birds and mites have allowed mites to act as ectoparasites or to be associated with the micro-environments of nests. The aim of this study was to identify the mite fauna associated with wild bird nests in the rural and urban zones of different environments, and analyze the importance of birds as potential carriers of these organisms to households or poultry houses. In the rural zone, the following environments were assessed: Countryside (C), Forest (F), Aquatic (A), Orchards (O), and Residential (R), and in the urban zone, a similar division was used (C, O, R), with absence of environments (A) and (F). Apart from the Suborder Oribatida found in the 52 bird nests sampled in both zones, a total of 24,274 mites were collected and identified as 67 species in 34 families. There was a predominance of mites in the rural zone (90%), with higher richness in (C) of both zones and higher abundance in (R) and (A) of the rural zone and (O) of the urban zone. Mite species of medical-veterinary importance with the highest abundance were Ornithonyssus bursa in nests of Certhiaxis cinnamomeus and Columbina picui; Tyrophagus putrescentiae in nests of Columbina picui and Pitangus sulphuratus; and Dermatophagoides pteronyssinus in nests of Troglodytes musculus and Pitangus sulphuratus. This study showed that the wild bird nests are depositories of mites, including ectoparasites of medical-veterinary importance.

Species abundance distribution and ecological niches of chigger mites on small mammals in Yunnan province, southwest China

Biologia ◽  
2017 ◽  
Vol 72 (9) ◽  
Author(s):  
Pei-Ying Peng ◽  
Xian-Guo Guo ◽  
Dao-Chao Jin ◽  
Wen-Ge Dong ◽  
Ti-Jun Qian ◽  
...  
Keyword(s):  
Host Specificity ◽  
Yunnan Province ◽  
Southwest China ◽  
Species Abundance ◽  
Mite Species ◽  
Distribution Model ◽  
Ecological Niches ◽  
Species Abundance Distribution ◽  
Abundance Distribution ◽  
Wide Range

AbstractThe ecological niches and species abundance distributions of chigger mites were studied on small mammal hosts captured from 34 sites in Yunnan Province of southwest China between 2001 and 2015. Levins’ niche breadth and Colwell-Futuyma’s method were used to quantitatively evaluate host-specificity and similarity of host selection. Hierarchical analysis was used to illustrate niche overlap among mite species. Most mite species had a wide range of hosts with low host specificity. The niche overlaps between different mite species did not correlate with their taxonomic positions. Some mite species from different genera showed high niche overlaps and some others within the same genus showed low niche overlaps. Preston’s lognormal distribution model was used to fit the theoretical curve of species abundance distribution of mite community on

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