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  • 1
    Electronic Resource
    Electronic Resource
    Springer
    Plant systematics and evolution 221 (2000), S. 157-166 
    ISSN: 1615-6110
    Keywords: Calyptrotheca ; Didiereaceae ; Portulacaceae ; Chloroplast DNA ; phylogeny ; rpl16 ; systematics ; trnL-trnF ; trnT-trnL
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology
    Notes: Abstract A molecular phylogeny of the Didiereaceae was produced through parsimony analysis of chloroplastrpl16 intron andtrnL-trnF andtrnT-trnL intergenic spacer sequences of all eleven species of the Didiereaceae and several outgroup taxa from the Portulacaceae. Results indicated that: 1) the Didiereaceae were embedded within the Portulacaceae, withCalyptrotheca as the sister group of the family; 2) present generic limits were supported; 3)Alluaudiopsis was the most basal lineage; 4) at least two separate episodes of polyploidization within the genusAlluaudia had occurred, and 5) unusually low amounts of variation were present in rapidly evolving noncoding plastid sequences.
    Type of Medium: Electronic Resource
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  • 2
    ISSN: 1573-5117
    Keywords: Acanthocephala ; aschelminthes ; cladistics ; evolution ; Gnathostomulida ; phylogeny ; pseudocoelomates ; Rotifera
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology
    Notes: Abstract We investigated phylogenetic relationships of phylum Rotifera using cladistic analysis to uncover all most-parsimonious trees from a data set comprising 60 morphological characters of nine taxa: one Acanthocephala, six Rotifera, and two outgroups (Turbellaria, Gnathostomulida). Analysis of our matrix yielded a single most-parsimonious tree. From our analysis we conclude the following: (1) Class Digononta is paraphyletic; (2) it is still premature to reject rotiferan monophyly; (3) the classification hierarchy that best conforms to this morphologically based, cladistic analysis is similar to several traditional schemes. In spite of these results, it is significant that this analysis yielded a tree that is incongruent with those trees developed from molecular data or by using the principles of evolutionary taxonomy.
    Type of Medium: Electronic Resource
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  • 3
    ISSN: 1573-5117
    Keywords: cladistics ; computers ; evolution ; evolutionary trees ; Notholca ; orders ; phylogeny ; Rotifera ; synapomorphies
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology
    Notes: Abstract We investigated evolutionary relationships among orders in phylum Rotifera and among species in genus Notholca (Rotifera) by computing parsimonious cladograms. All of the most-parsimonious cladograms generated for the ordinal level confirm the view that class Monogononta, superclass Eurotatoria, and phylum Rotifera are monophyletic. Species within the genus Notholca were separated into six groups (clades), but some species have been defined based on highly variable characters not reliably studied using cladistics. Therefore, phenetic studies are warranted, especially for species possessing caudal processes.
    Type of Medium: Electronic Resource
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  • 4
    Electronic Resource
    Electronic Resource
    Springer
    Hydrobiologia 255-256 (1993), S. 491-493 
    ISSN: 1573-5117
    Keywords: Acanthocephala ; evolution ; phylogeny ; Rotifera ; systematics ; taxonomy ; workshop
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology
    Type of Medium: Electronic Resource
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  • 5
    ISSN: 1573-5117
    Keywords: Acanthocephala ; aschelminthes ; cladistics ; evolution ; Gnathostomulida ; phylogeny ; pseudocoelomates ; Rotifera
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology
    Notes: Abstract We investigated phylogenetic relationships of phylum Rotifera using cladistic analysis to uncover all most-parsimonious trees from a data set comprising 60 morphological characters of nine taxa: one Acanthocephala, six Rotifera, and two outgroups (Turbellaria, Gnathostomulida). Analysis of our matrix yielded a single most-parsimonious tree. From our analysis we conclude the following: (1) Class Digononta is paraphyletic; (2) it is still premature to reject rotiferan monophyly; (3) the classification hierarchy that best conforms to this morphologically based, cladistic analysis is similar to several traditional schemes. In spite of these results, it is significant that this analysis yielded a tree that is incongruent with those trees developed from molecular data or by using the principles of evolutionary taxonomy.
    Type of Medium: Electronic Resource
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  • 6
    Electronic Resource
    Electronic Resource
    Amsterdam : Elsevier
    Phytochemistry 17 (1978), S. 1313-1317 
    ISSN: 0031-9422
    Keywords: Psilotaceae, amentoflavone-O-glucosides ; Psilotum ; Tmesipteris ; apigenin C-glycosides ; apigenin-O-glycosides ; phylogeny ; taxonomy.
    Source: Elsevier Journal Backfiles on ScienceDirect 1907 - 2002
    Topics: Biology , Chemistry and Pharmacology
    Type of Medium: Electronic Resource
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