PMID: 11911679Mar 26, 2002Paper

The virulence of Enterococcus to freshwater prawn Macrobrachium rosenbergii and its immune resistance under ammonia stress

Fish & Shellfish Immunology
Winton Cheng, Jiann-Chu Chen

Abstract

Growth of pathogen bacterium. Enterococcus was not affected in tryptic soy broth (TSB) medium containing ammonia-N concentration in the range of 0-5.14 mg l(-1). Giant freshwater prawn Macrobrachium rosenbergii (8-12 g) were challenged with Enterococcus which had been incubated for 24 h in TSB medium containing different concentrations of ammonia-N at 0-5.14 mg l(-1) Cumulative mortality of M. rosenbergii was higher for the bacteria incubated in TSB medium having ammonia-N at 0 and 0.26 mg l(-1), than those incubated in TSB medium having 1.28, 2.57 and 5.14 mg l(-1) ammonia-N after 24 h of challenge. However, cumulative mortality of prawn was significantly higher for the bacteria incubated in TSB medium with no ammonia added after 120 h of challenge. The prawns (8-12 g) were challenged with Enterococcus previously incubated in TSB medium for 24 h, then placed in water having concentrations of ammonia-N at control (0.06 mg l(-1)), 0.55, 1.01, 1.68 and 3.18 mg l(-1). Mortality of prawns increased directly with ammonia-N concentrations after 72 h challenge. The pranws (20-30 g) which had been exposed to control, 0.55, 1.68 and 3.18 mg (-1) ammonia-N for 7 days were examined for the total haemocyte count (THC), differential haemocy...Continue Reading

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Citations

Jul 27, 2010·Comparative Biochemistry and Physiology. Part A, Molecular & Integrative Physiology·Feng YueJian Li
Dec 27, 2005·Fish & Shellfish Immunology·Winton ChengJiann-Chu Chen
May 7, 2015·Comparative Biochemistry and Physiology. Part A, Molecular & Integrative Physiology·Qin RenLingjun Si
Apr 23, 2015·Comparative Biochemistry and Physiology. Toxicology & Pharmacology : CBP·Fan ZhangLiqiao Chen
Jun 2, 2007·Journal of Experimental Zoology. Part A, Ecological Genetics and Physiology·Natarajan VidyaMunusamy Arumugam
Dec 14, 2019·Ecotoxicology and Environmental Safety·Xuexing DongLinlan Lv

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