|1. Herring and sprat serum esterase has been studied by combined
starch and agar gel electrophoresis at pH 9.0. Both strong and weak
bands which represesented esterase activity occurred in both species.
2. Most herring specimens contained one strong component of intermediate
anodic mobility. Two strong components of higher and
two of lower anodic mobility occurred at low frequencies. A hypothesis
of genetical control by one gene controlling each of the
components is proposed.
3. Maximum six weak bands of herring serum esterase were found.
Considerable variations among specimens occurred in these bands.
No theory of genetic control of the total variations can be given at
present, but two codominant alleles may be responsible for the variation
in two of the weak bands.
4. The intraspecific variations in sprat serum esterase were complicated,
and it was difficult to classify the specimens into well defined
groups on basis of these variations. A hypothesis of control by two
allelic genes of the variations in two of the components is introduced.
5. Frequency variations among some of the samples of both species were
|Fiskeridirektoratets skrifter, Serie Havundersøkelser
|vol 15 no 2
|Studies on serum esterase in herring and sprat