Susceptibility of fish to Chattonella marina is determined by its tolerance to hypoxia
| Autor: | Alice K.Y. Chan, Min Shen, Jingliang Xu, Doris W.T. Au |
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| Rok vydání: | 2011 |
| Předmět: |
Respiratory impairment
Oryzias Zoology Aquatic Science Oceanography Significant elevation Oxygen Consumption Stress Physiological Animals Seawater Grouper Biological Oxygen Demand Analysis Chattonella marina biology Ecology Osmolar Concentration Fishes Hypoxia (environmental) Eutrophication biology.organism_classification Pollution Oxygen Fish kill Environmental Monitoring |
| Zdroj: | Marine Pollution Bulletin. 63:189-194 |
| ISSN: | 0025-326X |
| Popis: | The harmful alga Chattonella marina has caused massive fish kills and economic losses worldwide. However, the fish kill mechanisms by C. marina have not been identified. The present study has confirmed that a significant elevation of blood osmolality is the universal response in moribund fish exposed to C. marina and the possible reasons leading to contradictory reports were identified. Both osmotic distress and respiratory impairment are important mechanisms leading to fish kill by C. marina. The susceptibility of marine fish to C. marina appears to be inversely related to their tolerance to hypoxia, with the hypoxia intolerant goldlined seabream being the most susceptible, and the hypoxia tolerant green grouper being the most tolerant to C. marina. Further studies in the marine medaka (Oryzias melastigma) showed that fish susceptibility to C. marina is directly related to susceptibility of the fish to hypoxia, but not related to its tolerance to hypersalinity stress. |
| Databáze: | OpenAIRE |
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