Evolutionary relationships of a «primitive» shark (Heterodontus) assessed by micro-complement fixation of serum transferrin

The evolutionary relationships of six sharks were investigated by comparing their transferrins using the micro-complement fixation method. The immunological distances observed were used to build a tree that confirms that the squaloid and galeoid species examined belong to two separate groups and tha...

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Bibliographic Details
Published in:Journal of molecular evolution 1987-01, Vol.25 (1), p.74-80
Main Authors: DAVIES, D. H, LAWSON, R, BURCH, S. J, HANSON, J. E
Format: Article
Language:English
Subjects:
Animals
Biological and medical sciences
Biological Evolution
Complement Fixation Tests
Fundamental and applied biological sciences. Psychology
Genetics of eukaryotes. Biological and molecular evolution
Heterodontus
Immune Sera
Immunoelectrophoresis
Marine
Sharks - blood
Sharks - genetics
Species Specificity
Transferrin - genetics
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Summary:The evolutionary relationships of six sharks were investigated by comparing their transferrins using the micro-complement fixation method. The immunological distances observed were used to build a tree that confirms that the squaloid and galeoid species examined belong to two separate groups and that Heterodontus, a genus of hitherto uncertain position, belongs with the galeoids. The divergence time estimated from the transferrin comparisons is roughly 240 +/- 65 million years between Heterodontus and galeoids.
ISSN:0022-2844
1432-1432
DOI:10.1007/BF02100043