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Lecture Notes

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Lecture notes of 12 pages for the course Comparative & Integrative physiology at QMUL

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Water and salt physiology (part 2)
Animals that face changes in salinity

 Migratory salmon and eels
 Brackish environments
- Tidal changes
- Drift from high to low salinity or vice vera
- Stenohaline
Narrow range
- Euryhaline
Broad range

Osmoconformers

 Poikilosomotic
 Ocean invertebrates
- Stenohaline osmoconformers
- Die in brackish waters
- Oysters and mussles
Euryhaline
Cells able to function
 Regulate cell-vlume
 Protects from parasites
 Hyper-isosmotic regulator
- Movement between freshwater to brackish
- Hyperosmotic regulators




Hyper-hyposmotic regulator

, Molecular phenotypic plasticity in gills of trout transferred between freshwater and seawater

 Hyper-hyposmotic regulator
- Molecular remodelling
- ↑ drinking
- ↓urine
Isosmotic




Land animals

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