Factors determining variations in viral abundance and viral production in a tropical estuary influenced by monsoonal cycles
| Autor: | Sreekumar Aparna, Ammini Parvathi, Aswathy Aj, Vijaya Krishna Aswathy, N.V. Madhu, Jasna, Dayana M |
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| Rok vydání: | 2019 |
| Předmět: |
0106 biological sciences
geography geography.geographical_feature_category 010504 meteorology & atmospheric sciences Ecology biology Host (biology) 010604 marine biology & hydrobiology Prokaryote Estuary Aquatic Science biology.organism_classification Monsoon 01 natural sciences Salinity Nutrient Abundance (ecology) Animal Science and Zoology Ecology Evolution Behavior and Systematics 0105 earth and related environmental sciences |
| Zdroj: | Regional Studies in Marine Science. 28:100589 |
| ISSN: | 2352-4855 |
| Popis: | Viruses are the most abundant, dynamic, and ubiquitous components in the marine and estuarine environments. They outnumber prokaryotes in their abundance by at least one order of magnitude, but their relationship varies across environments. The present study examined the environmental factors (temperature, salinity, inorganic nutrients, and host abundance) that influence abundance and distribution of viruses in a tropical monsoonal estuary (Cochin estuary — CE) in India. Water samples were collected daily for one year from two stations with different hydrological settings in the estuary. Virioplankton abundance (VA) fluctuated daily with no definite pattern, but synchronized with the variations in prokaryotic abundance. On a seasonal scale, the abundance of virus and prokaryotes were higher during the summer months (pre-monsoon period) compared to monsoon and post-monsoon. The temporal dynamics of virioplankton was influenced by prokaryotic abundance (PA), viral production (VP), temperature, salinity and nutrient concentrations. The viral to prokaryote ratio (VPR) ranged from 1–44. There were significant (p |
| Databáze: | OpenAIRE |
| Externí odkaz: |
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