Molecular relationships between closely related strains and species of nematodes (original) (raw)

Summary

Electrophoretic comparisons have been made for 24 enzymes in the_Bergerac_ and_Bristol_ strains of_Caenorhabditis elegans_ and the related species,Caenorhabditis briggsae. No variation was detected between the two strains of_C. elegans._ In contrast, the two species,C. elegans and_C. briggsae_ exhibited electrophoretic differences in 22 of 24 enzymes. A consensus 5S rRNA sequence was determined for_C. elegans_ and found to be identical to that from_C. briggsae._ By analogy with other species with relatively well established fossil records it can be inferred that the time of divergence between the two nematode species is probably in the tens of millions of years.

The limited anatomical evolution during a time period in which proteins undergo extensive changes supports the hypothesis that anatomical evolution is not dependent on overall protein changes.

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Authors and Affiliations

  1. Department of Biochemical and Biophysical Sciences, University of Houston, Central Campus, 77004, Houston, Texas, USA
    Margaret H. Butler, Susan M. Wall, Kenneth R. Luehrsen, George E. Fox & Ralph M. Hecht

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  1. Margaret H. Butler
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  2. Susan M. Wall
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  3. Kenneth R. Luehrsen
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  4. George E. Fox
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  5. Ralph M. Hecht
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Butler, M.H., Wall, S.M., Luehrsen, K.R. et al. Molecular relationships between closely related strains and species of nematodes.J Mol Evol 18, 18–23 (1981). https://doi.org/10.1007/BF01733207

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