鲟源嗜麦芽窄食单胞菌的分离鉴定及药敏特性分析

doi:10.16378/j.cnki.1003-1111.2020.05.007

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Abstract Morphological observation, physiological and biochemical characteristics, 16S rDNA and gyrB gene sequence analysis were used to identify a suspected pathogen strain SXG-1 isolated and purified from the liver of the diseased sturgeon hybrid [kaluga sturgeon (Huso dauricus)♀×Amur sturgeon(Acipenser schrenckii)♂] collected from a farm in Suiyang district, Guizhou Province, in September to October of 2017, with cumulative mortality of 20% in order to effectively promote the development of sturgeon breeding industry in Guizhou Province and to reduce the damage caused by disease outbreaks. The strain SXG-1 was identified as Stenotrophomonas maltophilia. Artificial infected fish by intraperitoneal SXG-1-injection showed same symptoms as that of natural ones with similar morphological and biochemical characteristics, proving to be the pathogen of the hybrid sturgeon, with LD₅₀ of 3.9×10⁸ cfu/mL. The antibiotic sensitivity test revealed that the isolate was sensitive to enrofloxacin and florfenicol. The finding provides scientific guidance to the prevention and control the disease of sturgeon.

Key words： hybrid sturgeon Stenotrophomonas maltophilia identification drug susceptibility test

Received: 21 November 2019

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	Articles by authors
	SHANG Baodi
	TAO Sha
	YANG Xing
	LI Xiaoyi
	LI Zhengyou
	ZHANG Xiaoping
	KONG Jie

Cite this article:

SHANG Baodi,TAO Sha,YANG Xing, et al. Isolation, Identification and Antibiotic Sensitivity of Pathogen Stenotrophomonas maltophilia from Hybrid Sturgeon[J]. Fisheries Science, 2020, 39(5): 694-701.

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https://www.shchkx.com/EN/10.16378/j.cnki.1003-1111.2020.05.007 OR https://www.shchkx.com/EN/Y2020/V39/I5/694

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