• Publications
  • Influence
Babesia: a world emerging.
TLDR
The observed time gap between tick origin and mammalian radiation indicates the existence of hitherto unknown piroplasmid lineages and/or species in extant vertebrate taxa, including reptiles and possibly amphibians.
Evolution of the Apicomplexa: where are we now?
  • D. Morrison
  • Biology, Medicine
    Trends in parasitology
  • 1 August 2009
The Apicomplexa is the only large taxonomic group whose members are entirely parasitic and is, therefore, presumably of major interest to parasitologists. We might, for example, expect that we know a
Multiple sequence alignment for phylogenetic purposes
I have addressed the biological rather than bioinformatics aspects of molecular sequence alignment by covering a series of topics that have been under-valued, particularly within the context of
Evolution of the genus Leishmania revealed by comparison of DNA and RNA polymerase gene sequences.
TLDR
Analysis of sequences of the gene encoding the DNA polymerase alpha catalytic polypeptide were analysed phylogenetically in combination with those encoding the RNA polymerase II largest subunit gene (RPOIILS) to infer a comprehensive phylogeny of Leishmania.
Effects of nucleotide sequence alignment on phylogeny estimation: a case study of 18S rDNAs of apicomplexa.
TLDR
This empirical study inferred phylogenetic trees for 43 species of the Apicomplexa and 3 of Dinozoa based on complete small-subunit rDNA sequences using six different multiple-alignment procedures, and concluded that the helical regions are the most informative.
The role of the lens in controlling heat-induced breakdown of testa-imposed dormancy in native Australian legumes
TLDR
Testa-imposed dormancy does not represent a single dormancy mechanism in legumes, as is often assumed when dormancy is broken artificially, and two groups of patterns are recognized.
Increasing the efficiency of searches for the maximum likelihood tree in a phylogenetic analysis of up to 150 nucleotide sequences.
  • D. Morrison
  • Medicine, Mathematics
    Systematic biology
  • 1 December 2007
TLDR
A range of heuristic search strategies are compared at locating the ML tree for 20 empirical data sets with 14 to 158 sequences and 411 to 120,762 aligned nucleotides and a newly developed version of the likelihood ratchet using PAUP* successfully found the peaks of multiple islands, but its speed needs to be improved.
The conceptual basis for a new classification of the coccidia.
TLDR
The immediate outcome of the Controversial Roundtable on 'New classification of coccidia' recommends the establishment of an international group of scientists to meet on a regular basis to stimulate and encourage discussion and debate on current classification schemes for the group of parasitic protozoa known as the eimeriid coccidi.
The current status of the small subunit rRNA phylogeny of the coccidia (Sporozoa).
TLDR
A comprehensive and consistent phylogenetic analysis of the available data for the small-subunit ribosomal RNA gene sequence, including a number of taxa not previously studied, based on a Bayesian tree-building analysis and the covariotide model of evolution is presented.
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