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Full-Text Articles in Life Sciences

A Biosystematic Study Of Panus Conchatus (Basidiomycetes; Agaricales), James Edward Johnson Jan 1992

A Biosystematic Study Of Panus Conchatus (Basidiomycetes; Agaricales), James Edward Johnson

Masters Theses

As part of a biosystematic study of Panus conchatus (Bull.: Fr.) Fr., North American and European herbarium specimens from the Field Museum and the University of Michigan were examined and a description of the taxon prepared. Tissue and single spore isolates were obtained from basidiocarps collected in Illinois. Single and polyspore isolates were obtained from a collection made in Switzerland by R. H. Petersen. Culture mat analyses were completed on several media and the taxonomic value of cultural characters assessed. Based on this study, the identification of somatic cultures by cultural characteristics is unlikely. Single spore isolates from the Illinois ...


Biochemical Systematics Of Notothenioid Fishes From Antarctica, Mara A. Mcdonald, Michael H. Smith, Michael W. Smith, James M. Novak, Paul E. Johns, Arthur L. Devries Jan 1992

Biochemical Systematics Of Notothenioid Fishes From Antarctica, Mara A. Mcdonald, Michael H. Smith, Michael W. Smith, James M. Novak, Paul E. Johns, Arthur L. Devries

Faculty Research & Creative Activity

Genetic variation at 30 protein-coding loci was examined in seven forms of notothenioid fishes from Antarctica. Multilocus heterozygosity varied from 0.018 to 0.078 across taxa. An analysis of the allozyme data revealed the probable existence of an unrecognized cryptic species within Trematomu5 bemacchii. Pagothenia borchgrevinki is as closely related to some species of Trematomus as are some species of Trematomus to each other. Speciation among the species of Trematomus and Pagothenia appears to have taken place primarily after the separation of Antarctica from Australia.