|dc.description.abstract||1. 14 samples of mackerel, about 1800 specimens, from the North Sea
and the Norwegian Coast were analysed by agar gel electrophoresis
(hemoglobins) and combined starch and agar gel electrophoresis
(serum proteins and serum esterase).
2. Hemoglobin variations related to ontogeny appeared during the first
year of the mackerel's life. In mackerel one year and older normally
one strong hemoglobin component occurred. Two strong components
were observed in some specimens (probably heterozygotes) but too
infrequently to be used for studies on population units.
3. In the serum proteins were found extensive variations, but the
greater part of the variations occurred in very weak bands, or the
observed phenotypes were somewhat unstable. Normally one transferrin
band was seen, but also a double band pattern (probably
heterozygote) were observed although too infrequently to be used in
studies of population units.
4. Five esterase components could be clearly distinguished, and a few
more were indicated. Each of the components seemed to be controlled
by one gene in a series of polyalleles, although some samples showed a
significant excess of observed homozygotes according to this theory.
5. No significant variations in gene frequencies between the samples
were found. The results also were approximately in accordance with
corresponding results from the southern North Sea and the areas
south of the British Islands.||
|dc.relation.ispartofseries||Fiskeridirektoratets skrifter, Serie Havundersøkelser||en
|dc.relation.ispartofseries||vol 15 no 5||en
|dc.title||Studies on blood proteins of mackerel||en