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Homoplasy, character function and nemertean systematics
1994 (English)In: Journal of Zoology, ISSN 0952-8369, E-ISSN 1469-7998, Vol. 234, no 2, 253-263 p.Article in journal (Refereed) Published
Abstract [en]

We question recent claims that cladistic analysis is inapplicable in nemerteans (phylum Nemertea) due to a supposedly high degree of convergence. We further argue that terms like convergence and parallelism are historical sayings and only make sense in a phylogenetic context. Therefore, an approach aiming to produce phylogenetic hypotheses cannot be rejected on the grounds of a high degree of convergence before the actual hypothesis. Convergence is not an empirical observation, but a conclusion made after an analysis. We also discuss the view that knowledge of a character's function is a prerequisite for phylogenetic analysis and conclude that this is an invalid approach. Function, like any other way of sharpening our observations, helps in formulating non-phylogenetic hypotheses of homology, but the crucial test is congruence with other characters on a phylogeny.

Place, publisher, year, edition, pages
1994. Vol. 234, no 2, 253-263 p.
National Category
Biological Systematics Zoology
Research subject
Ecology, Evolutionary Biology
Identifiers
URN: urn:nbn:se:lnu:diva-51375DOI: 10.1111/j.1469-7998.1994.tb06073.xOAI: oai:DiVA.org:lnu-51375DiVA: diva2:914765
Available from: 2016-03-25 Created: 2016-03-25 Last updated: 2016-04-29Bibliographically approved
In thesis
1. Tree-thinking and nemertean systematics
Open this publication in new window or tab >>Tree-thinking and nemertean systematics
1996 (English)Doctoral thesis, comprehensive summary (Other academic)
Place, publisher, year, edition, pages
Göteborg: Göteborgs universitet, 1996
National Category
Biological Systematics
Research subject
Ecology, Evolutionary Biology
Identifiers
urn:nbn:se:lnu:diva-51380 (URN)91-628-1952-6 (ISBN)
Public defence
1996-04-26, Föreläsningssalen, Zoologen, Medicinalgatan 18, Göteborg, 16:38 (English)
Opponent
Supervisors
Available from: 2016-04-08 Created: 2016-03-25 Last updated: 2016-04-08Bibliographically approved

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CiteExportLink to record
Permanent link

Direct link
Cite
Citation style
  • apa
  • harvard1
  • ieee
  • modern-language-association-8th-edition
  • vancouver
  • Other style
More styles
Language
  • de-DE
  • en-GB
  • en-US
  • fi-FI
  • nn-NO
  • nn-NB
  • sv-SE
  • Other locale
More languages
Output format
  • html
  • text
  • asciidoc
  • rtf