. Bonner zoologische Monographien. Zoology. ,7 : Fitch-Margoliash tree computed from Nei's genetic distances between Steno- cephalemys and Praomys albipes populations. Numbers above a line are distances; below, the bootstrap values. The tree is rooted at the composite outgroup. For abbre-viations of populations see table 2. (1) the species of the Afroalpine zone (L. melanonyx and S. albocaudata) occupy basal positions in the phylogenies; (2) the youngest lineages are represented by the forest species (L. chrysopus and P. albipes); (3) the hea
. Bonner zoologische Monographien. Zoology. ,7 : Fitch-Margoliash tree computed from Nei's genetic distances between Steno- cephalemys and Praomys albipes populations. Numbers above a line are distances; below, the bootstrap values. The tree is rooted at the composite outgroup. For abbre-viations of populations see table 2. (1) the species of the Afroalpine zone (L. melanonyx and S. albocaudata) occupy basal positions in the phylogenies; (2) the youngest lineages are represented by the forest species (L. chrysopus and P. albipes); (3) the heathland species (L. brevicaudus and S. griseicauda) may be paraphyletic. Indeed, there are preliminary indications that our samples of S. griseicauda include more than one species (Lavrenchenko et al. 1997). A discussion on this point will be published elsewhere. By contrast, our cytogenetic (Aniskin et al. 1997) and morphological (Lavrenchenko et al. 1998) analyses support the conspecificity of all our samples of L. brevicaudus. Therefore we carried out parsimony analyses at the species level with populations being pooled together. The results of the two analyses treating both loci and alleles as characters were fully compatible with those based on the distance data. L. melanonyx diverges basally whereas L. chrysopus and L. brevicaudus are sister groups. The high bootstrap values indicate significant support for this branching pattern (). : The most parsimo- nious tree resulting from cladistic analyses of Lophu- romys species. Branch lengths are drawn propor- tionately to those resulting from the analysis by locus using Fitch parsimony. Synapomorphies for the analysis by locus (changes of the most common allele in a locus) are indicated along the branches. Circled numbers are bootstrap values for the analyses by locus and by allele, the latter given in parentheses).. Please note that these images are extracted from scanned page images that may have been digitally enha
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Keywords: ., bookcentury1900, bookcollectionbiodiversity, booksubjectzoology
