Effects of pressure changes induced by commercial navigation traffic on mortality of fish early life stages
| Autor: | S. Reid Adams, K. Jack Killgore, David J. Schaeffer, Thomas M. Keevin |
|---|---|
| Rok vydání: | 2019 |
| Předmět: |
0106 biological sciences
Larva food.ingredient biology 010604 marine biology & hydrobiology Micropterus 04 agricultural and veterinary sciences Aquatic Science biology.organism_classification 01 natural sciences Fishery Bass (fish) Ictiobus cyprinellus food Water column Ictalurus 040102 fisheries 0401 agriculture forestry and fisheries Juvenile Blue catfish |
| Zdroj: | Journal of Applied Ichthyology. 35:1105-1110 |
| ISSN: | 1439-0426 0175-8659 |
| Popis: | Mortality of fish early life stages was measured in a pressure vessel to simulate vertical displacement within the water column. Mortality was measured for three pressure regimes for four fish species: larval bigmouth buffalo Ictiobus cyprinellus, larval blue catfish Ictalurus furcatus, juvenile bluegill Lepomis macrochirus, and juvenile largemouth bass Micropterus salmoides. The maximum pressure‐change tested, 344.8 kPa, equivalent to a 35.2 m displacement of fish within the water column, did not cause significant mortality of larvae or juveniles. Since 32.5 m exceeds depths in most inland navigation channels and possibly the depth to which rapid propeller induced water mixing occurs, the range of pressure changes that could be experienced by early life stages during towboat mixing of the water column will not result in significant mortality. |
| Databáze: | OpenAIRE |
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