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Li, X.M, Zhu, Y.J, Ringø, E, yang, deguo. (1398). Prevalence of Aeromonas hydrophila and Pseudomonas fluorescens and factors influencing them in different freshwater fish ponds. سامانه مدیریت نشریات علمی, 19(1), 111-124. doi: 10.22092/ijfs.2019.120174
X.M Li; Y.J Zhu; E Ringø; deguo yang. "Prevalence of Aeromonas hydrophila and Pseudomonas fluorescens and factors influencing them in different freshwater fish ponds". سامانه مدیریت نشریات علمی, 19, 1, 1398, 111-124. doi: 10.22092/ijfs.2019.120174
Li, X.M, Zhu, Y.J, Ringø, E, yang, deguo. (1398). 'Prevalence of Aeromonas hydrophila and Pseudomonas fluorescens and factors influencing them in different freshwater fish ponds', سامانه مدیریت نشریات علمی, 19(1), pp. 111-124. doi: 10.22092/ijfs.2019.120174
Li, X.M, Zhu, Y.J, Ringø, E, yang, deguo. Prevalence of Aeromonas hydrophila and Pseudomonas fluorescens and factors influencing them in different freshwater fish ponds. سامانه مدیریت نشریات علمی, 1398; 19(1): 111-124. doi: 10.22092/ijfs.2019.120174

Prevalence of Aeromonas hydrophila and Pseudomonas fluorescens and factors influencing them in different freshwater fish ponds

Iranian Journal of Fisheries Sciences
مقاله 220، دوره 19، شماره 1، فروردین 2020، صفحه 111-124    اصل مقاله (879.84 K)
نوع مقاله: Research Paper
شناسه دیجیتال (DOI): 10.22092/ijfs.2019.120174
نویسندگان
X.M Li1؛ Y.J Zhu1؛ E Ringø2؛ deguo yang*
1Key Laboratory of Freshwater Biodiversity Conservation, Ministry of Agriculture of China, Yangtze River Fisheries Research Institute, Chinese Academy of Fishery Sciences, Wuhan, China
2Norwegian College of Fishery Science, Faculty of Biosciences, Fisheries and Economics, UiT The Arctic University of Norway, N-9037, Breivika, Norway
چکیده
Real-time quantitative PCR (qPCR) was performed to elucidate the abundance of Aeromonas hydrophila and Pseudomonas fluorescens, which are among the most widespread fish pathogens in ponds. Both pathogens have three different breeding patterns, namely, (a) gibel carp (Carassius auratus gibelio), (b) yellow catfish (Pelteobagrus fulvidraco), and (c) black carp (Mylopharyngodon piceus), over a production season. Results revealed that pond sediments have significantly higher bacterial levels of A. hydrophila and P. fluorescens (105–106 copies µl-1 DNA) than pond water (103–104 copies µl-1 DNA). In addition, independent regression models revealed that environmental variables influence the levels of pathogenic bacteria. The occurrence of A. hydrophila and P. fluorescens were significantly positively correlated to dissolved oxygen and water temperature, respectively. On the contrary, both pathogens were negatively correlated to total nitrogen. In this study, the prevalence of pathogenic bacteria and their relationships with physicochemical factors in different pond environments were investigated for the first time through a molecular method. Furthermore, although we did not include fish diseases occurring during the production season, our results can provide useful theoretical information for fish breeding especially with regard to the prevention of related bacterial diseases.
کلیدواژه‌ها
Aeromonas hydrophila؛ Pseudomonas fluorescens؛ Freshwater fish؛ qPCR؛ Ponds
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