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Objective To investigate the Blomia tropicalis breeding status in the ground dust rice collected in Haikou City. Methods Totally 17 samples of ground dust rice were collected from 10 sampling sites in Haikou City. Then 10 g of dust rice was taken from each individual sample for isolation of the mites that were made of slide specimen, and the mites were identified and classified under a microscope. Results B. tropicalis mites were found in all the 17 samples with the detection rate of 100%. A total of 1 176 heads of B. tropicalis were isolated, with an average breeding density of 6.91 heads/g. Conclusion B. tropicalis breeding status is severe in Haikou City. The effective measures should be taken to prevent and control the harm associated with B. tropicalis contamination.
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Objective To investigate the breeding of acaroid mites in the stored grains in Wenchang area,Hainan Province,China.Methods The breeding mites from the samples were separated by a shake-sieve and microscope directly.The isolations were used for slide preparation based on previous literature,and then under a light microscope,the identification and counting of the acaroid mites were performed.Results Twelve species of mites were identified from 20 categories of grains.They be-longed to 10 genera of 4 families.Among the 12 grain samples,the breeding rates were higher of Blomia tropicalis and Tyropha-gus putrescentiae.Among the 20 samples collected,a total of 5 885 mites were found,with an average breeding density of 29.43/g.Conclusion The infestation of acaroid mites appears serious in the stored grains in Wenchang area,which should be taken measures to prevent and control.
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Objective To investigate the species and diversity of acaroid mites community in home storages in Linquan ar-ea,Anhui Province.Methods The samples of 48 kinds of storages from the residents in Linquan County were collected,and the mites in them were separated in a microscope directly.Results Totally 19 species of acaroid mites belonging to 14 genera of 6 families were obtained from the 48 kinds of samples.The diversity analysis showed that the number of species,the species richness index and species diversity index of mites in the habitats were in the order of the other storages>drysaltery>grains.Conclusion The quantities of breeding acaroid mites in storages in Linquan area are much larger,meanwhile the species are also very rich,thus in order to reduce the harm of acaroid mites,we should take active measures to control their breeding.
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Objective To investigate the densities and species of acaroid mites in stored products in farmer home storages. Methods The mite samples which were collected from the farmers’home in Linquan County, Anhui Province included grains, foods, condiments, fruits and vegetables, and the breeding mites were isolated, then identified and classified after using the mites to make slide specimens. Results Twenty-one species of acaroid mites were obtained, belonging to 7 families and 15 genera. The highest breeding density was in the millet (3 888.89 mite/g) and the lowest was in the fennel (2.03 mite/g), and the frequent breeding species of storages were Tyrophagus putrescentiae and Lepidoglyphus destructor. The average breeding density of acaroid mites in grains was 383.94 mite/g, and the dominant mite species was T. longior. The average breeding density of acaroid mites in condiments was 149.53 mite/g, and the dominant mite species were L. destructor and Chortoglyphus arcuatus. The average breeding density of acaroid mites in foods was 85.15 mite/g, and the dominant mite species were T. putrescentiae, T. longior, T. palmarum, Glycyphagus domesticus and Dermatophagoides farina. The average breeding density of acaroid mites in fruits and vegetables was 49.15 mite/g, and the dominant mite species were Rhizoglyphus robini and T. palmarum. The average breeding density of acaroid mites in other stored products was 25.05 mite/g, and the dominant mite species were T. putrescentiae and L. destructor. Conclusion The species of acaroid mites in home storages are very rich, and it is necessary to take positive measures to reduce the infestation of acaroid mites.
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Objective To investigate the densities and species of acaroid mites in stored products in farmer home storages. Methods The mite samples which were collected from the farmers’home in Linquan County, Anhui Province included grains, foods, condiments, fruits and vegetables, and the breeding mites were isolated, then identified and classified after using the mites to make slide specimens. Results Twenty-one species of acaroid mites were obtained, belonging to 7 families and 15 genera. The highest breeding density was in the millet (3 888.89 mite/g) and the lowest was in the fennel (2.03 mite/g), and the frequent breeding species of storages were Tyrophagus putrescentiae and Lepidoglyphus destructor. The average breeding density of acaroid mites in grains was 383.94 mite/g, and the dominant mite species was T. longior. The average breeding density of acaroid mites in condiments was 149.53 mite/g, and the dominant mite species were L. destructor and Chortoglyphus arcuatus. The average breeding density of acaroid mites in foods was 85.15 mite/g, and the dominant mite species were T. putrescentiae, T. longior, T. palmarum, Glycyphagus domesticus and Dermatophagoides farina. The average breeding density of acaroid mites in fruits and vegetables was 49.15 mite/g, and the dominant mite species were Rhizoglyphus robini and T. palmarum. The average breeding density of acaroid mites in other stored products was 25.05 mite/g, and the dominant mite species were T. putrescentiae and L. destructor. Conclusion The species of acaroid mites in home storages are very rich, and it is necessary to take positive measures to reduce the infestation of acaroid mites.
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Objective To investigate the Suidasia nesbitti breeding status in the ground dust flour collected in Qiqihaer City. Methods Totally,16 aliquots of ground dust flour were respectively collected from a college canteen and 15 households in Qiq-ihaer City. Then 10 g dust flour was taken from individual sample for isolation of the mites that were made of slide specimen,and the mites were identified and classified under a microscope. Results Acaroid mites were found in 15 of the 16 aliquots of sam-ples(detection rate being 93.8%),and 7 species,belonging to 6 genera under 3 families,were identified. A total of 561 heads of mites were isolated from 160 g samples,with an average breeding density of 3.51 heads/g. The most breeding mite was associ-ated with S. nesbitti. Conclusions Various species of mites are breeding in the ground dust flour in Qiqihaer City,and S. nesbit-ti occurs the most. These findings indicate that effective measures should be taken to prevent and control the harm associated with acaroid mite contamination.
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Objective To observe the external morphology of Histiostoma feroniarum hypopus under a light microscope. Methods The samples were collected in a mushroom cultivation base,and the H. feroniarum hypopus was isolated and puri?fied. The slide samples were prepared and observed under an optical microscope. Results The back body of the H. feroniarum hypopus was flat with tiny bristles,the epidermis was of significant ossification,the ventral had four pairs of slender feet stretched,the sucker plate was prosperous in the end of the body,and the sucker plate had eight suckers. The gnathosoma was thin,long and highly specialized. Conclusion The light microscopy shows the morphological characteristics of H. feroniarum hypopus,providing the basis for identifying and life cycle study.
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Objective To understand the breeding situation of Acaroid mites in indoor environments of kindergartens in Wuhu City so as to provide the evidence for its prevention and control. Methods From March to June and September to De?cember in 2014 dust samples were collected from 15 kindergartens of 3 ranks every month. Acaroid mites in the samples were isolated identified and counted. Results Totally 360 samples were selected and 169 samples 46.94% had mite infestation. Pyroglyphidae accounted for the most in the population with the breeding rate of 45.00%. Totally 18 504 mites were found and Dermatophagoides farina and Dermatophagoides pteronyssinus were the dominant species with the composition ratios of 30.21%5 590 mites and 17.83% 3 300 mites respectively. The third?ranked kindergartens were in the most serious situation con?cerning with 81.67% 98/120 of the breeding rate of Acaroid mites. The differences were statistically significant among the kin?dergartens with different ranks F=6.048 χ2=73.523 both P0.05 . Conclusion Acaroid mites in the kindergartens in Wuhu City were in serious condition and the population and species composition of Acaroid mite community is influenced by the human behavior and indoors environments.
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Objective To investigate the acaroid mite pollution in houses in Huaibei area,Anhui province and to prevent allergic diseases caused by acaroid mites. Methods The samples of acaroid mites were collected from the houses,hotels and undergraduate dormitories,then the acaroid mites were separated,classed and counted. Results Fifteen kinds of acaroid mites were detected from the samples,belonging to 5 families,11 genera. The analysis showed that average density of acaroid mites in the common houses ranked the first,32.5. The values of the species richness index R was 1.36,the species diversity index was 2.16,the species evenness index was 0.9. Conclution The density of acaroid mites in the common houses is higher in Huaibei area and the effective measure should be taken to control the acaroid mites.
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Objective To investigate the composition and diversity of acaroid mite community in the house in Xuancheng area in Anhui province.Methods The dust samples from 4 sites selected in each house were collected in June-July,2006,acaroid mites were isolated,counted and identified.Results 3 386 acaroid mites were obtained,belong to 6 families,12 genera and 14 species.The species richness index Rmargalef for the four habitats ranged from 0.73 to 1.75,while the species diversity index(Shannon-Wiener index) ranged from 1.36 to 1.87 and Pielou index ranged from 0.70 to 0.92.Conclusion The results of the present paper show that the habitat condition is the main factor that can directly influence the community structure and diversity of acaroid mites in the houses and the human activity is also an influencing factor to be reckoned with.