10.4 Threat: Invasive fish
p. 579-582
Texte intégral
10.4.1 Brown and black bullheads
Beneficial
Application of a biocide
1Two studies in the UK and USA found that rotenone successfully eradicated black bullhead. Assessment: beneficial (effectiveness 80 %; certainty 80 %).
2https://www.conservationevidence.com/actions/1050
Likely to be beneficial
Netting
3A replicated study in a nature reserve in Belgium found that double fyke nets could be used to significantly reduce the population of large brown bullheads. Assessment: likely to be beneficial (effectiveness 55 %; certainty 55 %).
4https://www.conservationevidence.com/actions/1051
No evidence found (no assessment)
5We have captured no evidence for the following interventions:
- Biological control of beneficial species
- Biological control using native predators
- Changing salinity
- Changing pH
- Draining invaded waterbodies
- Electrofishing
- Habitat manipulation
- Increasing carbon dioxide concentrations
- Public education
- Trapping using sound or pheromonal lures
- Using a combination of netting and electrofishing
- UV radiation.
10.4.2 Ponto-Caspian gobies
Beneficial
Changing salinity
6A replicated controlled laboratory study in Canada found 100 % mortality of round gobies within 48 hours of exposure to water of 30 % salinity. Assessment: beneficial (effectiveness 90 %; certainty 75 %).
7https://www.conservationevidence.com/actions/1072
Likely to be beneficial
Use of barriers to prevent migration
8A controlled, replicated field study in the USA found that an electrical barrier prevented movement of round gobies across it, and that increasing electrical pulse duration and voltage increased the effectiveness of the barrier. Assessment: likely to be beneficial (effectiveness 50 %; certainty 45 %).
9https://www.conservationevidence.com/actions/1074
No evidence found (no assessment)
10We have captured no evidence for the following interventions:
- Application of a biocide
- Biological control of beneficial species
- Biological control using native predators
- Changing pH
- Draining invaded waterbodies
- Electrofishing
- Habitat manipulation
- Increasing carbon dioxide concentrations
- Netting
- Public education
- Trapping using visual, sound and pheromonal lures
- Using a combination of netting and electrofishing
- UV radiation.
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