scholarly journals The phylogeny of the Charadriiformes (Aves): a new estimate using the method of character compatibility analysis

2010 ◽  
Vol 34 (3) ◽  
pp. 263-345 ◽  
Author(s):  
Joseph G. Strauch
1990 ◽  
Vol 68 (7) ◽  
pp. 1433-1440 ◽  
Author(s):  
William J. Crins

Few estimates of phylogenetic relationship below the sectional level have been proposed within the genus Carex (Cyperaceae). The reasons for this include (1) poorly circumscribed sections (paraphyletic and polyphyletic), (2) uncertain relationships among sections, and (3) difficulty in objectively assessing character state polarities. The operational difficulties posed by points 2 and 3 can be overcome through the use of character compatibility analysis, if it can be demonstrated that the section under study is monophyletic (point 1). This technique enables the investigator to generate hypotheses of relationship while minimizing the number of prior assumptions. Hypotheses of phylogenetic relationship are presented for the taxa within Carex sections Phyllostachyae, Limosae, and Ceratocystis. The topologies of these unrooted networks are assessed using external data sets (chromosome numbers, etc.) that serve as tests of the hypotheses, and may allow for a posteriori determination of character state polarities. In sections Ceratocystis and Limosae, these analyses provide strong support for the notion that chromosome evolution in Carex proceeds in a linear stepwise fashion. The results for section Phyllostachyae contradict this notion. Synthesis of all available data, coupled with phylogenetic reconstruction, will enable caricologists to provide more convincing arguments about the nature, direction, and factors influencing character state change.


1980 ◽  
Vol 29 (1) ◽  
pp. 108 ◽  
Author(s):  
M. F. Mickevich ◽  
Lynne R. Parenti ◽  
Joseph G. Strauch

1983 ◽  
Vol 61 (2) ◽  
pp. 518-535 ◽  
Author(s):  
Bernard R. Baum

A phylogenetic analysis of Triticeae was performed by means of numerical methods. Five methods, each based on extreme assumptions of parameters so interpreted under Felsenstein's (1979) evolutionary model, were used: Camin–Sokal parsimony, Wagner parsimony, Dollo parsimony, polymorphism parsimony, and character-compatibility analysis. Although a considerable amount of parallelism was, for some time, suspected to have occurred in Triticeae (by Stebbins for instance) so that for this reason perhaps the assumptions of polymorphism parsimony might be most suitable for phylogenetic analysis, the five methods were used because the evolutionary assumptions for each investigated character are, and probably will long remain, unknown.Data input consisted of sets of hypothesized transformation series, each set subjected to analyses using the five methods. Results of an analysis provided the basis for altering the set of hypothesized transformation series for subsequent analysis. Analyses were carried out repeatedly until stabilization; that is until, in the author's judgment, the most parsimonious solution was arrived at and further trials were of diminishing return. The most parsimonious tree obtained served as a base for subsequent elaboration of the final tree, taking into consideration genetic information primarily, and for the erection of the proposed phylogenetic classification of Triticeae. A key is provided for identification of the groupings in the tribe. The proposed classification is discussed in the light of previous classifications, even though none of them were phylogenetic in the sense of Hennig.


Taxon ◽  
1981 ◽  
Vol 30 (3) ◽  
pp. 591-600 ◽  
Author(s):  
Christopher A. Meacham

1983 ◽  
Vol 31 (6) ◽  
pp. 565 ◽  
Author(s):  
PY Ladiges ◽  
CJ Humphries ◽  
MIH Brooker

A preliminary study of eastern Monocalyptus suggested that the peppermint eucalypts, informal subseries Amygdalininae, form a monophyletic group whose sister taxon is series Pilulares. Subseries Amygdalininae was then analysed using four cladistic methods: transformed cladistic method, Wagner trees, a branch and bound method (all three being parsimony methods) and character compatibility analysis. The branch and bound method produced the shortest trees, four in all. They suggested that, within the Amygdalininae, Eucalyptus pulchella is the sister species to E. amygdalina, which in turn is the sister species to all other taxa. The remaining species from Tasmania form a monophyletic group characterized by, for example, protruding oil glands on seedling and juvenile-leaf margins. The Victorian taxa form a monophyletic group characterized by high oil gland densities and lack of anthocyanin pigment on the lamina of juvenile leaves at node 7. Tasmanian and mainland forms attributed to E. nitida were treated as separate terminal taxa and it was shown that they are not sister taxa. Tasmanian populations are typical E. nitida Hook. f. and a new species, E. willisii, is here erected for the mainland populations. A revised classification of subseries Amygdalininae and a formal description of E. willisii sp. nov. are appended. A vicariance-biogeographic analysis is also included.


1984 ◽  
Vol 62 (2) ◽  
pp. 219-229 ◽  
Author(s):  
Jonathan Shaw

Forty-one Pohlia taxa coded for their expression of 36 qualitative morphological characters are analyzed using cladistic and phenetic methods. Phenetic approaches include similarity graph clustering and divisive methods utilizing information theoretic criteria. The Wagner Tree parsimony method and character compatibility analysis provide estimates of cladistic relationships. Four major lineages within the genus differ primarily in sporophyte characters, with specific differences based largely on gametophytic features. Peristome simplification may have occurred several times within Pohlia. An infrageneric classification is proposed with diagnostic descriptions and nomenclature provided.


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