Antibacterial activity of marine macroalgae against fish pathogenic Vibrio species

摘要: In mariculture, diseases of microbial origin can cause significant economic losses worldwide; the evolution microorganism resistance to antibiotics has resulted in a growing need for new antibacterial compounds that are effective veterinary medicine and characterized by limited undesirable side effects. Increased attention recently been turned seaweeds as promising source metabolites with antimicrobial activity. Vibriosis is common disease, caused bacteria genus Vibrio, result high mortality aquaculture. The aim this study was identify activity against some pathogenic Vibrio species, order possible alternative commonly used Chloroform/methanol lipidic extracts six seaweed species (Chaetomorpha linum, Cladophora rupestris, Gracilaria dura, gracilis, Gracilariopsis longissima, Ulva prolifera) were tested their activities fish using disc diffusion method. Different susceptibilities algal observed. All demonstrated inhibition ordalii. best from showing ordalii, salmonicida, alginolyticus vulnificus. results confirmed potential use or health-promoting feed