| Autor: |
HIRATA, Hachiro, USHIRO, Masakazu, HIRATA, Ikuo |
| Jazyk: |
angličtina |
| Zdroj: |
鹿児島大学水産学部紀要=Memoirs of Faculty of Fisheries Kagoshima University. 31:153-160 |
| ISSN: |
0453-087X |
| Popis: |
The ecologiacl succession of Chlorella saccharophila, Brachionus plicatilis, and autogenous bacteria inculture water was observed for the purpose of analyzing their microcosms and to determine thedietary efficiency of bacteria for the culture of B. plicatilis.B. plicatilis were fed C. saccharophila by using 3 l flasks at the beginning of the experiments. Severalspecies of bacteria were observed to grow autogenously in the cultured water. Population densitiesof C. saccharophila, B. plicatilis, and autogenous bacteria were monitored daily. The behaviour ofautogenous bacteria was closely observed by the introduction of BGA (bacterial growth ability).BGA was determined by measuring turbidity of population growth of autogenous bacteria whichwere sampled from the water and cultured in flasks.Ecological succession in the flasks were clearly found in each observation. B. plicatilis preferablyconsumed C. saccharophila during the first few days. Population density of autogenous bacteriagradually decreased after C. saccharophila were consumed. Moreover bacterial density increasedagain when the population density of B. plicatilis finally decreased. |
| Databáze: |
OpenAIRE |
| Externí odkaz: |
|
