Scanning electron microscopic observation on morphology of Carpoglyphus lactis / 中国血吸虫病防治杂志

Objective To observe the morphological characteristics of live Carpoglyphus lactis at different stages of life cycle and its ultrastructure. Methods The live C. lactis specimens were isolated from longan pulp, and firstly rinsed with double distilled water under a light microscope to make slide preparation by the conventional manner, and then were made into scanning electron microscope (SEM) specimens. The specimens were observed under SEM for the ultrastructure characteristics at different developmental stages including egg, larva, nymph and adult (male and female) . Results The SEM photographs showed that the egg was oval and milky. The larva had three pairs of legs, without genital setae, preanal seta and coxal rod, and there was no trace of genital growth. The nymph had four pairs of legs, genital seta and preanal seta, whereas the genital area was looked still under-developed. The male adult had a conical gnathosoma and a pair of external verticals which were longest setae at the dorsal idiosoma, whereas the other dorsal setae were all short rhabdoid. At the ventral idiosoma, there was an aedoeagus which was like a bent cube, and the top was straight forward. The external sacral setae and post anal were longest setae. The female adult’s genital plates were a composite of plastron and cutex inner root, covering the genital tract, and a hole of anus and a pair of anal setae were located at posterior of idiosoma. Conclusion The morphological characteristics and ultra-structure of C. lactis at different stages of life cycle can be vividly observed under SEM, which provides the morphological bases for further study of the relation between parasitism and disease.

Investigation of infestation of Carpoglyphus lactis in stored jujube from Anhui Province / 中国血吸虫病防治杂志

Objective To investigate the breeding of Carpoglyphus lactis in stored jujube from Anhui Province, so as to provide the evidence for preventing the harm of C. lactis to stored jujube. Methods The jujube samples stored for more than 6 months were collected from dried fruit shops and/or Chinese herbal medicine warehouses, which were chosen as survey sites in Anhui Province. The mites were isolated and identified under a microscope. Results Totally 19 samples infested with C. lactis were obtained from 300 samples in 17 cities of Anhui Province, the breeding rate and breeding density of C. lactis were 6.33% and 6.52 per gram respectively. The constituent ratios of different developmental stages were adult 85.72%, larva 12.27%, dormancy body 0.56%, and egg 1.45%, respectively. Conclusion The breeding density of C. lactis in the stored jujube is high and the species diversity is rich, so the control of C. lactis and the prevention of human acariasis should be strengthened.

Investigation of infestation of Carpoglyphus lactis in stored jujube from Anhui Province / 中国血吸虫病防治杂志

Objective To investigate the breeding of Carpoglyphus lactis in stored jujube from Anhui Province, so as to provide the evidence for preventing the harm of C. lactis to stored jujube. Methods The jujube samples stored for more than 6 months were collected from dried fruit shops and/or Chinese herbal medicine warehouses, which were chosen as survey sites in Anhui Province. The mites were isolated and identified under a microscope. Results Totally 19 samples infested with C. lactis were obtained from 300 samples in 17 cities of Anhui Province, the breeding rate and breeding density of C. lactis were 6.33% and 6.52 per gram respectively. The constituent ratios of different developmental stages were adult 85.72%, larva 12.27%, dormancy body 0.56%, and egg 1.45%, respectively. Conclusion The breeding density of C. lactis in the stored jujube is high and the species diversity is rich, so the control of C. lactis and the prevention of human acariasis should be strengthened.

Scanning electron microscopic observation on morphology of Carpoglyphus lactis / 中国血吸虫病防治杂志

Objective To observe the morphological characteristics of live Carpoglyphus lactis at different stages of life cycle and its ultrastructure. Methods The live C. lactis specimens were isolated from longan pulp, and firstly rinsed with double distilled water under a light microscope to make slide preparation by the conventional manner, and then were made into scanning electron microscope (SEM) specimens. The specimens were observed under SEM for the ultrastructure characteristics at different developmental stages including egg, larva, nymph and adult (male and female) . Results The SEM photographs showed that the egg was oval and milky. The larva had three pairs of legs, without genital setae, preanal seta and coxal rod, and there was no trace of genital growth. The nymph had four pairs of legs, genital seta and preanal seta, whereas the genital area was looked still under-developed. The male adult had a conical gnathosoma and a pair of external verticals which were longest setae at the dorsal idiosoma, whereas the other dorsal setae were all short rhabdoid. At the ventral idiosoma, there was an aedoeagus which was like a bent cube, and the top was straight forward. The external sacral setae and post anal were longest setae. The female adult’s genital plates were a composite of plastron and cutex inner root, covering the genital tract, and a hole of anus and a pair of anal setae were located at posterior of idiosoma. Conclusion The morphological characteristics and ultra-structure of C. lactis at different stages of life cycle can be vividly observed under SEM, which provides the morphological bases for further study of the relation between parasitism and disease.

Carpoglyphus lactis infestation in stored traditional Chinese medicine Arillus longan / 中国血吸虫病防治杂志

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.