Responses of invasive silver and bighead carp to a carbon dioxide barrier in outdoor ponds
| Autor: | Nicholas M. Swyers, Richard A. Erickson, Jon J. Amberg, Aaron R. Cupp, Kim T. Fredricks, Tyson W. Hatton |
|---|---|
| Rok vydání: | 2017 |
| Předmět: |
0106 biological sciences
geography Silver carp geography.geographical_feature_category Hypophthalmichthys Resource (biology) biology Ecology 010604 marine biology & hydrobiology Drainage basin Aquatic Science biology.organism_classification 010603 evolutionary biology 01 natural sciences Bighead carp Fishery chemistry.chemical_compound chemistry Carbon dioxide Ecology Evolution Behavior and Systematics |
| Zdroj: | Canadian Journal of Fisheries and Aquatic Sciences. 74:297-305 |
| ISSN: | 1205-7533 0706-652X |
| DOI: | 10.1139/cjfas-2015-0472 |
| Popis: | Resource managers need effective methods to prevent the movement of silver carp (Hypophthalmichthys molitrix) and bighead carp (Hypophthalmichthys nobilis) from the Mississippi River basin into the Laurentian Great Lakes. In this study, we evaluated dissolved carbon dioxide (CO2) as a barrier and deterrent to silver (278 ± 30.5 mm) and bighead (212 ± 7.7 mm) carp movement in continuous-flow outdoor ponds. As a barrier, CO2 significantly reduced upstream movement but was not 100% effective at blocking fish passage. As a deterrent, we observed a significant shift away from areas of high CO2 relative to normal movement before and after injection. Carbon dioxide concentrations varied across the pond during injection and reached maximum concentrations of 74.5 ± 1.9 mg·L–1 CO2; 29 532 – 41 393 μatm (1 atm = 101.325 kPa) at the site of injection during three independent trials. We conclude that CO2 altered silver and bighead carp movement in outdoor ponds and recommend further research to determine barrier effectiveness during field applications. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
|