D. Littlewood

Publications114
h-index45
Citations7,200
Highly Influential Citations596
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Phylogeny and classification of the Digenea (Platyhelminthes: Trematoda).
Complete small subunit ribosomal RNA gene (ssrDNA) and partial (D1-D3) large subunit ribosomal RNA gene (lsrDNA) sequences were used to estimate the phylogeny of the Digenea via maximum parsimony and… Expand
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Acoel flatworms: earliest extant bilaterian Metazoans, not members of Platyhelminthes.
Because of their simple organization the Acoela have been considered to be either primitive bilaterians or descendants of coelomates through secondary loss of derived features. Sequence data of 18S… Expand
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Interrelationships and evolution of the tapeworms (Platyhelminthes: Cestoda).
Interrelationships of the tapeworms (Platyhelminthes: Cestoda) were examined by use of small (SSU) and large (LSU) subunit ribosomal DNA sequences and morphological characters. Fifty new complete SSU… Expand
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The interrelationships of all major groups of Platyhelminthes: phylogenetic evidence from morphology and molecules
We used a data matrix of 65 morphological characters from 25 ingroup and 6 outgroup taxa, and an alignment comprising complete 18S rDNA sequences from 82 species of parasitic and free-living… Expand
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The interrelationships of proseriata (Platyhelminthes: seriata) tested with molecules and morphology.
Proseriate flatworms are common members of the interstitial benthic fauna worldwide, predominantly occupying marine environments. As minute animals, having relatively few characters useful for… Expand
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Phylogeny of the Platyhelminthes and the evolution of parasitism
Robust phylogenies provide the basis for interpreting biological variation in the light of evolution. Homologous features provide phylogenetically informative characters whereas homoplasious… Expand
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Phylogenies inferred from mitochondrial gene orders-a cautionary tale from the parasitic flatworms.
[Extract] Mitochondrial genomes have been used in numerous studies to investigate phylogenetic relationships among eukaryotes at many levels (e.g., Smith et al. 1993; Boore et al. 1995; Boore,… Expand
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Testing the molecular clock: molecular and paleontological estimates of divergence times in the Echinoidea (Echinodermata).
The phylogenetic relationships of 46 echinoids, with representatives from 13 of the 14 ordinal-level clades and about 70% of extant families commonly recognized, have been established from 3 genes… Expand
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The complete mitochondrial genomes of Schistosoma haematobium and Schistosoma spindale and the evolutionary history of mitochondrial genome changes among parasitic flatworms.
Complete mitochondrial genome sequences for the schistosomes Schistosoma haematobium and Schistosoma. spindale have been characterized. S. haematobium is the causative agent of urinary… Expand
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Parasite speciation within or between host species?--phylogenetic evidence from site-specific polystome monogeneans.
Partial nuclear 28S ribosomal RNA and mitochondrial cytochrome c oxidase subunit I (COI) gene sequences (953 and 385 nucleotides, respectively) of one fish monogenean (outgroup) and six polystome… Expand
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