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http://dx.doi.org/10.5762/KAIS.2012.13.11.5615

Seasonal Fluctuations of Marine Viral Abundances and Physicochemical Parameters in Gwangyang Bay  

Choi, Eun Seok (Biotechnology Lab., Daesang Corporation)
Lee, Gunsup (Korea Institute Ocean Science & Technology)
Kim, Dongguin (Department of Biological Science, Silla University)
Auh, Chung-Kyoon (Department of Biological Science, Mokpo National University)
Park, Jongbum (Department of Biological Science, Silla University)
Chung, Youngjae (Department of Life Science and Biotechnology, Shin Gyeong University)
Lee, Taek-Kyun (Korea Institute Ocean Science & Technology)
Publication Information
Journal of the Korea Academia-Industrial cooperation Society / v.13, no.11, 2012 , pp. 5615-5622 More about this Journal
Abstract
Seasonal distributions of the viral abundance and physicochemical parameters were analyzed at three different regions in Gwangyang Bay. Morphological structure of marine virus was observed using transmission electron microscopy. Most of marine virus had bacteriophage-like structure, but some were similar with eukaryotic microalgal virus, Ectocarpus siliculosus virus (EsV). Viral abundance at Group 1 (closed eutrophic region) was higher than viral abundances at Group 2 (closed oligotrophic region) and Group 3 (open oligotrophic region). Seasonal abundances of marine virus at Group 1 were dynamically changed. The viral density was variably changed from maximum $7.33{\times}10^8ml^{-1}$ in August to minimum $0.3{\times}10^8ml^{-1}$ in December and maintained middle value in spring and autumn. The concentration of nitrogen and phosphate sources was correlated with viral abundance. Particularly, seasonal change of dissolved oxygen concentration was opposite to the variation of viral abundance. These results showed that viral abundances were closely related with fluctuation of marine physicochemical environment in Gwangyang bay.
Keywords
Marine virus; Physicochemical parameter; Nitrogen; Phosphate; Dissolved oxygen;
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