ABSTRACT
Objective To understand the natural population dynamics and spatial distribution of Tyrophagus putrescentiae in storage flour,so as to provide an evidence for its prevention and control. Methods The samples from five sampling points in Wuhu City were collected monthly from January to December,2013,and examined and counted for T. putrescentiae. The disper-sion pattern target,Iwao's m*--x regression analysis and Taylor's lgS2-lg-x regression analysis were used for analyzing the spa-tial distribution pattern of T. putrescentiae in the storage flour. Results The peaks of population dynamics of T. putrescentiae were discovered in July and September. The indexes of dispersion were as follows:I>0,CA>0,m*/-x >1;and the linear re-gression equation of Iwao:m*=3.7403+1.0175-x (r=0.9958)and Taylor:lgS2=0.5004+1.1349 lg-x (r=0.8328) showed that the spatial distribution pattern of T. putrescentiae in the storage flour was assembled. Conclusion The peak of pop-ulation dynamics of T. putrescentiae in the storage flour in Wuhu City is a double peak type,and the spatial distribution pattern of T. putrescentiae is assembled.
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Objective To investigate the pollution status of Gohieria fusca in the air conditioner-filters of different places in Wuhu City. Methods The dust samples were collected from the filters of air-conditioners in dining rooms,shopping malls,ho-tels and households between June and September,2013,and G. fusca was detected in the dust samples. Results There were 430 dust samples collected and 98 were G. fusca positive with the breeding rate of 22.79%. The difference of breeding rates of G. fusca were statistically significant among the different places(χ2=18.294,P<0.05). Among 510.5 g dust samples in total, 783 G. fusca mites were detected with an average breeding density of 1.53 mite/g. Conclusion G. fusca breeds in the dust of air-conditioner filters in Wuhu City gravely.
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Objective To observe the morphological characteristics of hypopus of Acarus siro in the stored wheat in Linquan County,Anhui Province. Methods The wheat samples were collected from the wheat which had been stored for more than six months. The hypopodes of A. siro were isolated from the stored wheat,and were made into the glass specimens,and then were identified under an optical microscope. Results The structural features of the hypopus were found under the microscope,such as the setae of tibia and setae of genu,and the foot claws were well-developed,and the genital seta bases and the pair of sucker were almost at the same baseline. Conclusion The hypopodes of A. siro are found in the stored wheat,and therefore,the effec-tive measures should be taken to control the hazard to the stored grain.
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Objective To study the morphological characteristics of Ixodes ovatus in order to provide the evidence for future research. Methods A group of goats were randomly selected and checked one by one,and the ticks were collected. Results A hard tick was found on the surface of a goat,and it was identified as Ixodes ovatus. Conclusions Ixodes ovatus has been found in Huainan area in Anhui Province,confirming that Huainan area is a new breeding place of Ixodes ovatus. This finding may contribute to the epidemiological research of tick-borne diseases.
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Objective To investigate the breeding of Carpoglyphus lactis in the storage Arillus longan,so as to provide the evidence for preventing the harm of C. lactis to traditional Chinese medicine. Methods Chinese herbal medicine warehouses were chosen as survey sites according to the breeding habits of mites,and the A. longan samples were stored more than 6 months. The mites were isolated and identified under a microscope. Result The C. lactis breeding rate was 20.0％(4/20)and the breeding density was 184.95 per sample. The constitute rates of adult,larva,dormancy body and egg were 58.39％, 30.41％,0.06％,and 11.14％respectively. Conclusion The breeding density of C. lactis is high in the stored A. longan,so the control and prevention of human intestinal acariasis should be strengthened.
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Objective To understand the breeding situation of Histiostoma feroniarum in Chinese herbal medicine Rhizoma Zingiberis. Methods The Rhizoma Zingiberis sold on the market was selected and brushed. The dust from Rhizoma Zingiberis was screened under a microscope to search the mites. The mites were made into specimens to identify the species. Results The mites were H. feroniarum. Totally 14 mites were found in 100 g dust sample,with the density of breeding of 0.14/g. Conclusion H. feroniarum could breed in Chinese herbal medicine Rhizoma Zingiberis,and the prevention and control measures should be adopted.
ABSTRACT
Objective To observe the morphological characteristics of Acarus farris hypopus. Methods The breeding mites from stored wheat samples were separated by a shake sieve and direct microscope. The isolations were used for slide preparation , and then the slide was observed under a light microscope for mite identification. Results The A. farris hypopus was found in the collected wheat samples. Under the microscope the boundary between the propodosoma and hysterosoma of the hypopus was obvi-ous. The bristles on the hysterosoma were short,and the abdomen had a sucker plate. Conclusion There is A. farris hypopus breeding in the storage wheat,and its morphological characteristics is similar with the characteristics of A. siro hypopus.