›› 2018, Vol. 45 ›› Issue (4): 1050-1058.doi: 10.16431/j.cnki.1671-7236.2018.04.027

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Isolation, Identification and Drug Sensitive Test for Hafnia alvei from Apis cerana in Guizhou

QIU Jiyu1, ZHU Xing1, ZHONG Chunyan1, LUO Yayan1, HOU Ping2, FAN Ying2, FAN Wensui3, DENG Weixi4, HAN Jianlun5   

  1. 1. College of Animal Science, Guizhou University, Guiyang 550025, China;
    2. Agricultural Committee of Guizhou Province, Guiyang 550000, China;
    3. Agricultural Bureau of Majiang County, Majiang 557600, China;
    4. Zunyi Vocational & Technical College, Zunyi 563000, China;
    5. Zhenzhen Garden Chinese Bee Farms, Daozhen 563500, China
  • Received:2017-12-07 Online:2018-04-20 Published:2018-04-25

Abstract:

For the diagnosis,prevention and treatment of Apis cerana's bacterial disease in Guizhou,a pathogen was identified in this paper by isolation and purification,morphological observation and biochemical test.The bacterial 16S rRNA gene universal primers were used for amplification and sequencing.The results of the sequencing were analyzed on NCBI.16S rRNA sequences of 30 bacteria of 5 genera with high homology were selected to analyze the nucleotide homology and construct the phylogenetic tree,and animal regression test and drug sensitivity test of the isolate were carried out.The results showed that the isolate was short gram-negative bacilli,and the biochemical tests were initially identified as Hafnia alvei.16S rRNA sequences shared the highest homology with Hafnia,ranging from 97.0% to 99.6%.The phylogenetic tree indicated that the isolate belonged to the branch of Hafnia.The animal regression test showed that the isolate had some pathogenicity to Apis cerana,indicating that the bees were infected by Hafnia alvei.Antibiotic sensitive test showed that the isolate was resistant to penicillin,erythromycin and clindamycin,and was sensitive to amikacin,sulfamethoxazole and ofloxacin.The results of this study provided a reference for the study of honeybee Hafnia infection in Apis cerana and provided reasonable drug advice for the bee farms.

Key words: Apis cerana; Hafnia alvei; 16S rRNA; isolation and identification

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