Copepod phylogeny: a reconsideration of Huys & Boxshall's ‘parsimony versus homology’
- Ju-shey Ho
- … show all 1 hide
Rent the article at a discountRent now
* Final gross prices may vary according to local VAT.Get Access
A hypothesis of copepod phylogeny proposed by Huys & Boxshall (1991) was reanalyzed with the PAUP computer program by using TOPOLOGY and DELTRAN options to remove many character reversals. The remaining reversal characters were removed employing the Camin-Sokal Optimization Procedure. The resulting tree is two steps longer than the best fit tree (Tree C) obtained strictly by using parsimony criterion and optimizd with the same procedure. Further analysis revealed that the differences in these two cladograms are essentially due to the differential treatment of nine characters and varied assumptions of ‘missing state’ in another six characters as being apomorphies or plesiomorphies. Huys & Boxshall's hypotheses of character polarity in the copepods are shown not to be in conflict with the principle of parsimony. According to the principle of parsimony, their Tree C is the best supported phylogenetic hypothesis for Copepoda.
- Felsenstein, J., 1983. Parsimony in systematics. Biological and statistical issues. Annu. Rev. Ecol. Syst. 14: 313–333.
- Ho, J. S., 1990. A phylogenetic analysis of copepod orders. J. crust. Biol. 10: 528–536.
- Huys, R. & G. A. Boxshall, 1991. Copepod Evolution. The Ray Society (London), 468 pp.
- Ridley, M., 1986. Evolution and Classification, the reformation of cladism. Longman, London & New York, 201 pp.
- Stock, J. H., 1991. Some reflections on the antiquity of the copepod lineages. Bull. Plankton Soc. Japan, Special Volume: 1–7.
- Swofford, D. L., 1985. PAUP (Phylogenetic Analysis Using Parsimony). Documentation for version 2.4.1. Illinois Natural History Survey, Champaign, 81 pp.
- Copepod phylogeny: a reconsideration of Huys & Boxshall's ‘parsimony versus homology’
Volume 292-293, Issue 1 , pp 31-39
- Cover Date
- Print ISSN
- Online ISSN
- Kluwer Academic Publishers
- Additional Links
- tree length
- Industry Sectors
- Ju-shey Ho (1)
- Author Affiliations
- 1. Department of Biology, California State University, 90840-3702, Long Beach, CA, USA