K. Johnson

Publications217
h-index46
Citations6,144
Highly Influential Citations540
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The chewing lice: world checklist and biological overview.
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Phylogeny and biogeography of dabbling ducks (genus: Anas): A comparison of molecular and morphological evidence
TLDR
It is suggested that the high dispersal ability of birds (especially dabbling ducks) has important implications for recovery of branches using molecular systematics and Geographic origin for most internal branches is ambiguous using several reconstruction methods.
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The population genetics of host specificity: genetic differentiation in dove lice (Insecta: Phthiraptera)
TLDR
Examining the genetic structure in the mitochondrial cytochrome oxidase I (COI) gene of two genera of lice occurring on multiple sympatric species of doves in southern North and Central America found that species of Physconelloides exhibited more genetic structure than did species of Columbicola.
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The biology, ecology, and evolution of chewing lice
When do parasites fail to speciate in response to host speciation?
TLDR
This work reconstructed trees from mitochondrial and nuclear DNA sequences for pigeons and doves and their feather lice and identified three apparent cases where the host has speciated but the associated parasite has not.
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Coevolution of Life on Hosts: Integrating Ecology and History
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Aligned 18S for Zoraptera (Insecta): phylogenetic position and molecular evolution.
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Ecology of congruence: past meets present.
TLDR
Careful comparison of chewing lice genera suggests that dispersal is a more fundamental barrier to host switching among related hosts than is establishment, and there is a correspondence between important ecological factors and the degree of phylogenetic congruence.
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The evolution of echolocation in swiftlets
TLDR
A well-supported molecular phylogeny is presented for the swiftlets and their relatives based on DNA sequence data from two mitochondrial genes, which are used to reconstruct the evolution of echolocation and provide strong evidence that the swiftlet group are amonophyletic group.
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Phylogenomics and the evolution of hemipteroid insects
TLDR
The results indicated that thrips (Thysanoptera) are the closest living relatives of true bugs and allies (Hemiptera) and that hemipteroid insects started diversifying before the Carboniferous period, over 365 million years ago.
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