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The Density and Species of Mite Breeding in the Stored Products In Nutr Hosp. 2015;31(2):798-807 ISSN 0212-1611 • CODEN NUHOEQ S.V.R. 318 Original / Investigación animal The density and species of mite breeding in the stored products in China Chaopin Li1,2, Xiaodong Zhan1, Entao Sun1, Jinhong Zhao1, Huiyong Wang1, Ji He1 and Jiajia Wang2 1Department of Medical Parasitology, Wannan Medical University, Wuhu 241002, Anhui. 2School of Medicine, Anhui University of Science & Technology, Huainan 232001, Anhui. China. Abstract DENSIDAD Y ESPECIES DE ÁCAROS REPRODUCIDAS EN LOS PRODUCTOS Objective: The aim of our study was to investigate the ALMACENADOS EN CHINA species and breeding density of acaroid mites in stored products in China. Methods: We tentatively harvested the samples from Resumen the products stored in warehouses, commercial stores Objetivo: El objetivo de nuestro estudio fue investigar and civilian houses, and the products. las especies y la densidad de reproducción de ácaros en Results: The results suggested the mites varied a lot productos almacenados en China. in species regarding their ecological habitus and habitat. Métodos: Provisionalmente, se recogieron muestras de Still, the breeding density in different samples was asso- productos almacenados en naves, locales comerciales y ciated with the sampling conditions. viviendas. Conclusions: These discrepancies may be associated Resultados: Los resultados sugirieron que los ácaros with the samples collected in diverse environment for the varíaban mucho en cuanto a especies respecto a sus há- mites, and the findings easily suggest that acaroid mites bitos y habitats ecológicos. Aún así, la densidad de re- are in universal distribution. producción en distintas muestras estuvo asociada a las (Nutr Hosp. 2015;31:798-807) condiciones de muestreo. Conclusiones: Estas discrepancias pueden estar aso- DOI:10.3305/nh.2015.31.2.8003 ciadas con las muestras recogidas en diversos ambientes Key words: Stored products. Acaroid mites. Habitat. para los ácaros, y los resultados sugieren visiblemente Allergic diseases. Anhui province. que los ácaros tienen una distribución universal. (Nutr Hosp. 2015;31:798-807) DOI:10.3305/nh.2015.31.2.8003 Palabras clave: Productos almacenados. Ácaros. Hábitat. Enfermedades alérgicas. Provincia de Anhui. Introduction widely recognized as a primary substance to induce hypersensitive reaction2,3, and has been the focus of Hypersensitivity disease was ranked by the World much interest and subject of intensive research due to Health Organization (WHO) as one of the four major its universal and specific nature4-6. Therefore, a tho- noninfectious diseases for targeted prevention in the rough understanding of the breeding status of acaroid 21st century. Annually, this disease affects 10% to 30% mites in the civil houses and stored products is of great of global population and is growing an important pu- significance to prevent the acarinosis, reduce the mite blic health concern1. Allergen plays a key role in the infestation and make full appreciation of the ecology development of allergic disorders, furthermore, mite of such mite species. Between Nov. 2009 and 2011, allergen, a naturally extensive airborne allergen, is we investigated the mite breeding conditions in 17 cities in Anhui province, including Huaibei, Fuyang, Bozhou, Bengbu, Huainan, Wuhu and Xuangcheng, etc. The present study was undertaken to report our findings on the total 150 species breeding in the stored Correspondence: Chaopin Li. products. Department of Medical Parasitology, Wannan Medical College. No. 22 Road Wenchangxi, Yijiang District, Wuhu City. Anhui Province 241002, People’s Republic of China Wuhu. E-mail: [email protected] Recibido: 26-VIII-2014. Aceptado: 12-IX-2014. 798 036_8003 La densidad y la cría de especies de ácaros en los productos almacenados en China.indd 798 07/01/15 16:15 Materials and methods were isolated with waternacopy and redricopy7. The mite slides were prepared from the specimens isolated Materials preparation as previous description8 for light microscopic obser- vation of the morphology and species identification as Reagents and apparatus used in this study included well as the count. permanent mounting medium (distilled water 50ml, 10% Hydration chlorine aldehyde 5ml, Glycerol 20ml, gum arabic 30g) and anhydrous alcohol (analytical Classification of the acaroid mites reagent, Shanghai product), light microscope (Nikon E-400), zoom stereo microscope (Nikon SMZ-800), Classification of the acaroid mites was in complian- Tullgren (HN-89), vibration screener (85A-B), sample ce with the taxonomic system described by Hughes sieve (ZNS-200), balances, etc. (1976). Specimen collection Data process In compliance with the inhabiting nature of acaroid The total acaroid mites were counted on individual mites, we tentatively harvested the samples from the sample basis of the stored products, and calculated as products stored in warehouses, commercial stores and the formula of D=N/T×100% for the breeding densi- civilian houses, and the products were associated with ty(N stands for the number detected in each sample, cereal products (paddies, wheat, rice, flour and maize), T for the weight of the sample and D for the breeding dry fruits (juglans regia, preserved date jujube, longan, density). persimon cake and hawkthorn) and house dust(cloth dust, bed sheet dust, floor dust and furniture dust). The product samples of corns and dry fruits had been kept Results for 6 months or longer upon the sample collection. Ten aliquots of specimens were taken from each sample The breeding density of mites in individual sample product, sealed in separate sampling bag and transpor- and the species ted to the laboratory, where each sample was measured with the balance by 10 g. Vibration sieve was used to The breeding density of the mites in separate 150 separate the dusts from solid samples before final iso- samples and the classification/species were illustra- lation of the acaroid mites. ted in table I. The results suggested the mites varied a lot in species regarding their ecological habitus and habitat. Still, the breeding density in different Isolation of the acaroid mite specimens samples was associated with the sampling condi- tions. Table II showed the classification of acaroid Mites in the solid samples were extracted using Tu- mites (Acari: Astigmata) in 150 samples of stored llgren funnel and directicopy, while those in the dusts products. Table I The numbers and mite species found in 150 samples of stored products Sample Breeding density NO. Species sorts (No./g) Acarus siro, Tyrophagus putrescentiae, Tyrolichus casei, Acarus farris, 1 Rice 10.37 Tyrophagus longior, Suidasia nesbitti, Glycyphagus domesticus Acarus siro, Tyrophagus putrescentiae, Lepidoglyphus michaeli, Mycetoglyphus 2 Millet 15.65 fungivorus Chortoglyphus arcuatus, Blomia freemani, Glycyphagus domesticus, 3 Flour 400.14 Caloglyphus berlesei, Thyreophagus entomophagus, Tyrophagus putrescentiae 4 Sticky rice 20.31 Tyrophagus putrescentiae, Acarus siro, Dermatophagoides farinae Acarus siro, Tyrophagus putrescentiae, Acarus immobilis, Mycetoglyphus 5 Rice bran 45.13 fungivorus, Dermatophagoides pteronyssinus, Euroglyphus maynei, Aleuroglyphus ovatus Tyrophagus putrescentiae, Blomia freemani, Lepidoglyphus michaeli, Suidasia 6 Broken rice 169.31 nesbitti, Euroglyphus maynei The density and species of mite breeding Nutr Hosp. 2015;31(2):798-807 799 in the stored products in China 036_8003 La densidad y la cría de especies de ácaros en los productos almacenados en China.indd 799 07/01/15 16:15 Table I (cont.) The numbers and mite species found in 150 samples of stored products Sample Breeding density NO. Species sorts (No./g) Tyrophagus putrescentiae, Caloglyphus berlesei, Caloglyphus mycophagus, 7 Unhusked rice 12.18 Lepidoglyphus destructor Acarus siro, Tyrophagus longior, Lepidoglyphus destructor, Chortoglyphus 8 Wheat 18.14 arcuatus, Aleuroglyphus ovatus Acarus siro, Lepidoglyphus destructor, Glycyphagus domesticus, Caloglyphus 9 Malt 21.53 berlesei 10 Corn germ 538.26 Tyrophagus putrescentiae, Acarus siro, Blomia freemani, Aleuroglyphus ovatus Austroglycyphagus geniculatus, Tyrophagus putrescentiae, Lepidoglyphus 11 Corn 217.69 michaeli 12 Peanut 24.19 Rhizoglyphus callae, Lardoglyphus konoi, Euroglyphus maynei Tyrophagus putrescentiae, Aleuroglyphus ovatus, Lardoglyphus konoi, 13 Sesame 19.72 Dermatophagoides farinae Acarus siro, Tyrophagus putrescentiae, Lepidoglyphus michaeli, Suidasia 14 broomcorn 35.87 nesbitti, Euroglyphus maynei Tyrophagus putrescentiae, Aleuroglyphus ovatus, Glycyphagus domesticus, 15 Highland barley 16.36 Lepidoglyphus destructor Dermatophagoides farinae, Rhizoglyphus callae, Tyrophagus putrescentiae, 16 Bran 193.31 Suidasia nesbitti, Aleuroglyphus ovatus Tyrophagus putrescentiae, Acarus siro, Tyrolichus casei, Lepidoglyphus 17 Soybean 46.18 michaeli 18 Mung bean 73.42 Tyrophagus putrescentiae, Tyrophagus longior, Lepidoglyphus destructor Tyrophagus putrescentiae, Acarus farris, Tyrolichus casei, Dermatophagoides 19 Broad bean 64.32 farinae Tyrophagus putrescentiae, Thyreophagus entomophagus, Acarus siro, 20 Cowpea 30.26 Tyrophagus longior 21 Pea 31.94 Tyrophagus putrescentiae, Aleuroglyphus ovatus, Lepidoglyphus destructor 22 Adzuki bean 104.21 Gohieria fuscus, Tyrophagus putrescentiae, Tyrophagus tropicus 23 Bean cake 48.38 Tyrophagus putrescentiae, Acarus farris, Mycetoglyphus fungivorus Dermatophagoides farinae, Thyreophagus entomophagus, Acarus siro, 24 Feeds 266.36 Tyrophagus putrescentiae, Acarus farris Rice contaminated 25 124.19 Dermatophagoides
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