. | . | Enzyme activity (nmol min-1 mg protein-1) . | . | . | ||
---|---|---|---|---|---|---|
Species . | N . | TMAoxi . | ChoDH . | BADH . | ||
Marine | ||||||
Chiloscyllium punctatum | 31 | 1.3±0.072 | 0.34±0.12 | 0.37±0.06 | ||
Leucoraja ocellata | 4 | bld | 0.18±0.05 | 1.3±0.13 | ||
Leucoraja erinacea | 4 | bld | 0.21±0.08 | 4.0±1.0 | ||
Taeniura lymma | 6 | bld | 0.60±0.11 | 16±1.4 | ||
Euryhaline in freshwater | ||||||
Dasyatis sabina | 23 | bld | 0.53±0.01 | 10±1.0 | ||
Freshwater | ||||||
Himantura signifer (50% SW) | 6 | bld | 1.1±0.23 | 4.8±1.6 | ||
Himantura signifer (FW) | 10 | bld | 1.1±0.15 | 11±4.1 | ||
Potamotrygon motoro | 4 | bld | 0.90±0.36 | 5.1±1.9 |
. | . | Enzyme activity (nmol min-1 mg protein-1) . | . | . | ||
---|---|---|---|---|---|---|
Species . | N . | TMAoxi . | ChoDH . | BADH . | ||
Marine | ||||||
Chiloscyllium punctatum | 31 | 1.3±0.072 | 0.34±0.12 | 0.37±0.06 | ||
Leucoraja ocellata | 4 | bld | 0.18±0.05 | 1.3±0.13 | ||
Leucoraja erinacea | 4 | bld | 0.21±0.08 | 4.0±1.0 | ||
Taeniura lymma | 6 | bld | 0.60±0.11 | 16±1.4 | ||
Euryhaline in freshwater | ||||||
Dasyatis sabina | 23 | bld | 0.53±0.01 | 10±1.0 | ||
Freshwater | ||||||
Himantura signifer (50% SW) | 6 | bld | 1.1±0.23 | 4.8±1.6 | ||
Himantura signifer (FW) | 10 | bld | 1.1±0.15 | 11±4.1 | ||
Potamotrygon motoro | 4 | bld | 0.90±0.36 | 5.1±1.9 |
TMAoxi, trimethylamine oxidase; ChoDH, choline dehydrogenase; BADH, betaine aldehyde dehydrogenase.
Values are mean ± s.e.m. bld, activity below the limits of detection: less than 0.05 μmol h-1 g-1 or equivalent to less than approximately 0.01 nmol min-1 mg protein-1(N=2-3).
N=5 for TMAoxi.
On a wet mass basis; 5.1±0.87 μmol h-1g-1.
As only two liver samples were available for this species, values are mean± range.