Effect of Escherichia coli and Aeromonas hydrophila on Some Abiotic Properties of Water Stored in Aerobic and Anaerobic Conditions  

作　　者：Ahmadou Fadimatou Antoine Tamsa Arfao Olive Vivien Noah Ewoti Fils Mamert Onana Brice Hermann Tcholong Fokouong Awawou Manouore Njoya Romeo Tagne Fodouop Guy Epole Etame Souad El Hajjaji Nola Moise Ahmadou Fadimatou;Antoine Tamsa Arfao;Olive Vivien Noah Ewoti;Fils Mamert Onana;Brice Hermann Tcholong Fokouong;Awawou Manouore Njoya;Romeo Tagne Fodouop;Guy Epole Etame;Souad El Hajjaji;Nola Moise(Laboratory of Hydrobiology and Environment, Faculty of Sciences, University of Yaounde 1, Yaounde, Cameroon;Laboratory of Spectroscopy, Modelisation, Molecular, Materials, Nanomaterials, Water and Environment, Faculty of Sciences, Mohammed-V University Rabat, Rabat, Morocco;Medical Analysis and Application Laboratory, Higher Institute of Health Science, Technician and Management of Garoua (ISSTSM), Garoua, Cameroon;Department of Aquatic Ecosystems Management, Institute of Fisheries and Aquatic Sciences, University of Douala, Douala, Cameroun;Bangangte Multipurpose Station, Scientific Coordination Forest, Soil and Environment, Institute of Agricultural Research for Development Cameroun, Yaound, Cameroun)

机构地区：[1]Laboratory of Hydrobiology and Environment, Faculty of Sciences, University of Yaounde 1, Yaounde, Cameroon [2]Laboratory of Spectroscopy, Modelisation, Molecular, Materials, Nanomaterials, Water and Environment, Faculty of Sciences, Mohammed-V University Rabat, Rabat, Morocco [3]Medical Analysis and Application Laboratory, Higher Institute of Health Science, Technician and Management of Garoua (ISSTSM), Garoua, Cameroon [4]Department of Aquatic Ecosystems Management, Institute of Fisheries and Aquatic Sciences, University of Douala, Douala, Cameroun [5]Bangangte Multipurpose Station, Scientific Coordination Forest, Soil and Environment, Institute of Agricultural Research for Development Cameroun, Yaound, Cameroun

出　　处：《Advances in Microbiology》2024年第12期663-677,共15页微生物学(英文)

摘　　要：Few studies have been carried out to date on the influence of bacteria on variations in the abiotic properties of water. The aim of the present work was to evaluate the influence of Escherichia coli and Aeromonas hydrophila on some abiotic properties of groundwater stored under aerobic or anaerobic conditions. Experiments were performed in the presence of monospecific cells and bispecific cells. The incubation temperatures were 4˚C and 23˚C. The incubation (storage) times were 6 h, 12 h, 24 h, 48 h and 72 h. Bacteriological analyses were carried out using culture and physicochemical analyses using appropriate techniques. The results show that in the presence of monospecific cells and under aerobic conditions, E. coli abundances were relatively lower than under anaerobic conditions. The opposite was observed in the presence of bispecific cells. In most cases, minimum cell abundances were observed after 6 hours of storage. The same was true for A. hydrophila cells. The values of pH, electrical conductivity and ammonium ions in the water on the day of sampling varied over time. The pH values were relatively higher at 4˚C in the presence of E. coli cells alone, and at 23˚C in the presence of A. hydrophila cells. Ammonium ion levels were relatively higher at 4˚C under anaerobic conditions for both bacterial species. The highest electrical conductivity value was observed at 23˚C in the presence of E. coli cells, and at 4˚C in the presence of A. hydrophila cells, under anaerobic conditions. Electrical conductivity is higher in the presence of A. hydrophila with fluctuations from 169 to 285 µS/cm after 24 h incubation and 259 µS/cm after 6 hours incubation at 4˚C and 23˚C respectively. Under anaerobic conditions and in the presence of E. coli, the conductivity varied from 169 µS/cm at sampling to 274 µS/cm after 72 hours of incubation at 4˚C and from 169 to 289 after 24 hours. Under the same experimental conditions and in the presence of A. hydrophila, the electrical conductivity is higher at 4˚C with a vaFew studies have been carried out to date on the influence of bacteria on variations in the abiotic properties of water. The aim of the present work was to evaluate the influence of Escherichia coli and Aeromonas hydrophila on some abiotic properties of groundwater stored under aerobic or anaerobic conditions. Experiments were performed in the presence of monospecific cells and bispecific cells. The incubation temperatures were 4˚C and 23˚C. The incubation (storage) times were 6 h, 12 h, 24 h, 48 h and 72 h. Bacteriological analyses were carried out using culture and physicochemical analyses using appropriate techniques. The results show that in the presence of monospecific cells and under aerobic conditions, E. coli abundances were relatively lower than under anaerobic conditions. The opposite was observed in the presence of bispecific cells. In most cases, minimum cell abundances were observed after 6 hours of storage. The same was true for A. hydrophila cells. The values of pH, electrical conductivity and ammonium ions in the water on the day of sampling varied over time. The pH values were relatively higher at 4˚C in the presence of E. coli cells alone, and at 23˚C in the presence of A. hydrophila cells. Ammonium ion levels were relatively higher at 4˚C under anaerobic conditions for both bacterial species. The highest electrical conductivity value was observed at 23˚C in the presence of E. coli cells, and at 4˚C in the presence of A. hydrophila cells, under anaerobic conditions. Electrical conductivity is higher in the presence of A. hydrophila with fluctuations from 169 to 285 µS/cm after 24 h incubation and 259 µS/cm after 6 hours incubation at 4˚C and 23˚C respectively. Under anaerobic conditions and in the presence of E. coli, the conductivity varied from 169 µS/cm at sampling to 274 µS/cm after 72 hours of incubation at 4˚C and from 169 to 289 after 24 hours. Under the same experimental conditions and in the presence of A. hydrophila, the electrical conductivity is higher at 4˚C with a va

关 键 词：GROUNDWATER Escherichia coli A. hydrophila Storage Variation in Abiotic Factors 

分 类 号：S94[农业科学—水产养殖]