Related Experiment Videos
[Gas bubble disease of fish]
1Bayerischen Landesamt für Wasserwirtschaft, Institut für Wasserforschung, Versuchsanlage Wielenbach.
Tierarztliche Praxis
|May 1, 1997
Summary
Gas bubble disease (GBD) in aquatic life is caused by supersaturation of dissolved gases. This non-infectious trauma, often from nitrogen, affects all species, with fry being highly vulnerable.
Area of Science:
- Aquatic toxicology
- Environmental pathology
Context:
- Gas bubble disease (GBD) is a non-infectious trauma in aquatic organisms.
- It results from dissolved gas supersaturation, often due to increased nitrogen partial pressure in groundwater.
Purpose:
- To describe the causes, susceptibility, and clinical manifestations of gas bubble disease.
- To highlight the varying sensitivity among fish species and age groups, particularly swim-up fry.
- To identify technical processes contributing to GBD, termed 'technopathy'.
Summary:
- GBD occurs chronically (approx. 103% total gas pressure) with slow mortality and acutely (above 110/115% TGP) with severe symptoms like embolism and high mortality.
- Susceptible species include fish, amphibians, and invertebrates, with fry being most at risk.
- Secondary infections can increase mortality in chronic GBD cases.
Impact:
- Understanding GBD is crucial for managing aquatic environments and preventing significant losses in aquaculture and wild populations.
- Identifying 'technopathy' allows for targeted interventions in water management systems.
- Recommendations include avoiding causal factors and managing pressure differentials to mitigate GBD.