Ulfur Arnason

Summary

Affiliation: University of Lund
Country: Sweden

Publications

  1. ncbi request reprint Pattern and timing of evolutionary divergences among hominoids based on analyses of complete mtDNAs
    U Arnason
    Division of Evolutionary Molecular Systematics, University of Lund, Sweden
    J Mol Evol 43:650-61. 1996
  2. ncbi request reprint Molecular timing of primate divergences as estimated by two nonprimate calibration points
    U Arnason
    Division of Evolutionary Molecular Systematics, University of Lund, Solvegatan 29, S 223 62 Lund, Sweden
    J Mol Evol 47:718-27. 1998
  3. pmc Mammalian mitogenomic relationships and the root of the eutherian tree
    Ulfur Arnason
    Division of Evolutionary Molecular Systematics, University of Lund, S 223 62 Lund, Sweden
    Proc Natl Acad Sci U S A 99:8151-6. 2002
  4. ncbi request reprint The mitochondrial genome of the sperm whale and a new molecular reference for estimating eutherian divergence dates
    U Arnason
    Department of Genetics, Division of Evolutionary Molecular Systematics, University of Lund, Solvegatan 29, S 223 62 Lund, Sweden
    J Mol Evol 50:569-78. 2000
  5. ncbi request reprint Molecular estimates of primate divergences and new hypotheses for primate dispersal and the origin of modern humans
    U Arnason
    Department of Genetics, Division of Evolutionary Molecular Systematics, University of Lund, Lund, Sweden
    Hereditas 133:217-28. 2000
  6. ncbi request reprint Phylogenetic analyses of mitochondrial DNA suggest a sister group relationship between Xenarthra (Edentata) and Ferungulates
    U Arnason
    Division of Evolutionary Molecular Systematics, University of Lund, Sweden
    Mol Biol Evol 14:762-8. 1997
  7. pmc The mitochondrial DNA molecule of the aardvark, Orycteropus afer, and the position of the Tubulidentata in the eutherian tree
    U Arnason
    Division of Evolutionary Molecular Systematics, University of Lund, Sweden
    Proc Biol Sci 266:339-45. 1999
  8. ncbi request reprint Cytochrome b nucleotide sequences and the identification of five primary lineages of extant cetaceans
    U Arnason
    Division of Evolutionary Molecular Systematics, University of Lund, Sweden
    Mol Biol Evol 13:407-17. 1996
  9. ncbi request reprint Radiation of extant marsupials after the K/T boundary: evidence from complete mitochondrial genomes
    Maria A Nilsson
    Department of Cell and Organism Biology, Division of Evolutionary Molecular Systematics, University of Lund, Solvegatan 29, S 223 62 Lund, Sweden
    J Mol Evol 57:S3-12. 2003
  10. doi request reprint Mitogenomic relationships of placental mammals and molecular estimates of their divergences
    Ulfur Arnason
    Division of Evolutionary Molecular Systematics, University of Lund, S 223 62 Lund, Sweden
    Gene 421:37-51. 2008

Detail Information

Publications52

  1. ncbi request reprint Pattern and timing of evolutionary divergences among hominoids based on analyses of complete mtDNAs
    U Arnason
    Division of Evolutionary Molecular Systematics, University of Lund, Sweden
    J Mol Evol 43:650-61. 1996
    ..The present findings automatically imply a much slower evolution in hominoid DNA (both mitochondrial and nuclear) than commonly recognized...
  2. ncbi request reprint Molecular timing of primate divergences as estimated by two nonprimate calibration points
    U Arnason
    Division of Evolutionary Molecular Systematics, University of Lund, Solvegatan 29, S 223 62 Lund, Sweden
    J Mol Evol 47:718-27. 1998
    ..The same datings were obtained in an analysis of clocklike evolving genes. The findings show that recalculation is necessary of all molecular datings based directly or indirectly on a Cercopithecoidea/Hominoidea split 30 MYBP...
  3. pmc Mammalian mitogenomic relationships and the root of the eutherian tree
    Ulfur Arnason
    Division of Evolutionary Molecular Systematics, University of Lund, S 223 62 Lund, Sweden
    Proc Natl Acad Sci U S A 99:8151-6. 2002
    ..The analyses identified monophyletic Pinnipedia with Otariidae (sea lions, fur seals) and Odobenidae (walruses) as sister groups to the exclusion of Phocidae (true seals)...
  4. ncbi request reprint The mitochondrial genome of the sperm whale and a new molecular reference for estimating eutherian divergence dates
    U Arnason
    Department of Genetics, Division of Evolutionary Molecular Systematics, University of Lund, Solvegatan 29, S 223 62 Lund, Sweden
    J Mol Evol 50:569-78. 2000
    ..Molecular estimates of Tertiary eutherian divergences were consistent with the fossil record...
  5. ncbi request reprint Molecular estimates of primate divergences and new hypotheses for primate dispersal and the origin of modern humans
    U Arnason
    Department of Genetics, Division of Evolutionary Molecular Systematics, University of Lund, Lund, Sweden
    Hereditas 133:217-28. 2000
    ..This hypothesis posits a common mitochondrial and Y-chromosome bottleneck about 400,000 years ago, associated with the origination of the human 2n = 46 karyotype, obstructing genetic exchange with the 2n = 48 Homo contemporaries...
  6. ncbi request reprint Phylogenetic analyses of mitochondrial DNA suggest a sister group relationship between Xenarthra (Edentata) and Ferungulates
    U Arnason
    Division of Evolutionary Molecular Systematics, University of Lund, Sweden
    Mol Biol Evol 14:762-8. 1997
    ..The present findings are in striking contrast with that understanding. The results suggest that Xenarthra and ferungulates separated about 86 MYA...
  7. pmc The mitochondrial DNA molecule of the aardvark, Orycteropus afer, and the position of the Tubulidentata in the eutherian tree
    U Arnason
    Division of Evolutionary Molecular Systematics, University of Lund, Sweden
    Proc Biol Sci 266:339-45. 1999
    ..By applying three molecular calibration points the divergence between the aardvark and armadillo-cetferungulates was estimated at ca. 90 million years before present...
  8. ncbi request reprint Cytochrome b nucleotide sequences and the identification of five primary lineages of extant cetaceans
    U Arnason
    Division of Evolutionary Molecular Systematics, University of Lund, Sweden
    Mol Biol Evol 13:407-17. 1996
    ..The level of divergence among the five cetacean lineages, and that seen between cetaceans and artiodactyls, suggests that cetaceans and artiodactyls had a common ancestor approximately 60 Mya...
  9. ncbi request reprint Radiation of extant marsupials after the K/T boundary: evidence from complete mitochondrial genomes
    Maria A Nilsson
    Department of Cell and Organism Biology, Division of Evolutionary Molecular Systematics, University of Lund, Solvegatan 29, S 223 62 Lund, Sweden
    J Mol Evol 57:S3-12. 2003
    ..The South American marsupial lineages are all characterized by a putatively non-functional tRNA for lysine, a potential RNA editing of the tRNA for asparagine, and a rearrangement of tRNA genes at the origin of light strand replication...
  10. doi request reprint Mitogenomic relationships of placental mammals and molecular estimates of their divergences
    Ulfur Arnason
    Division of Evolutionary Molecular Systematics, University of Lund, S 223 62 Lund, Sweden
    Gene 421:37-51. 2008
    ..In accordance with the progressive use of the term Placentalia for extant orders and extinct taxa falling within this group we forward new proposals for the names of some superordinal clades of placental mammals...
  11. ncbi request reprint Mitogenomic analyses provide new insights into cetacean origin and evolution
    Ulfur Arnason
    Division of Evolutionary Molecular Systematics, Department of Cell and Organism Biology, University of Lund, S 223 62 Lund, Sweden
    Gene 333:27-34. 2004
    ..The current results are inconsistent with both these hypotheses. The findings suggest that the claimed morphological similarities between Mesonychia and Cetacea are the result of evolutionary convergence rather than common ancestry...
  12. ncbi request reprint Housekeeping genes for phylogenetic analysis of eutherian relationships
    Morgan Kullberg
    Division of Evolutionary Molecular Systematics, Department of Cell and Organism Biology, University of Lund, Lund, Sweden
    Mol Biol Evol 23:1493-503. 2006
    ....
  13. ncbi request reprint The complete mitochondrial DNA (mtDNA) of the donkey and mtDNA comparisons among four closely related mammalian species-pairs
    X Xu
    Division of Evolutionary Molecular Systematics, University of Lund, Solvegatan 29, S 223 62 Lund, Sweden
    J Mol Evol 43:438-46. 1996
    ..The findings show that the superimposition of sequence data of one lineage for resolving and dating evolutionary divergences of other lineages should be performed with caution unless based on comprehensive data...
  14. ncbi request reprint Marsupial relationships and a timeline for marsupial radiation in South Gondwana
    Maria A Nilsson
    Department of Cell and Organism Biology, Division of Evolutionary Molecular Systematics, University of Lund, S 223 62 Lund, Sweden
    Gene 340:189-96. 2004
    ..Within Australia itself, several of the deepest divergences were estimated to have taken place close to the Eocene/Oligocene transition...
  15. ncbi request reprint Mitogenomic analyses of deep gnathostome divergences: a fish is a fish
    Ulfur Arnason
    Department of Cell and Organism Biology, Division of Evolutionary Molecular Systematics, University of Lund, Solvegatan 29, S 223 62 Lund, Sweden
    Gene 333:61-70. 2004
    ..Similarly, analyses of 18S and 28S rRNA genes (both nuclear) do not support the commonly accepted tree...
  16. pmc Expressed sequence tags as a tool for phylogenetic analysis of placental mammal evolution
    Morgan Kullberg
    Department of Cell and Organism Biology, Division of Evolutionary Molecular Systematics, University of Lund, Lund, Sweden
    PLoS ONE 2:e775. 2007
    ..This is done on the example of the established relationships among primates (human), lagomorphs (rabbit), rodents (rat and mouse), artiodactyls (cow), carnivorans (dog) and proboscideans (elephant)...
  17. pmc The complete mitochondrial genome of the wallaroo (Macropus robustus) and the phylogenetic relationship among Monotremata, Marsupialia, and Eutheria
    A Janke
    Division of Evolutionary Molecular Systematics, University of Lund, Sweden
    Proc Natl Acad Sci U S A 94:1276-81. 1997
    ..The findings also show that many, probably most, extant eutherian orders had their origin in middle to late Cretaceous times, 115-65 MYBP...
  18. ncbi request reprint Molecular evidence of an African Phiomorpha-South American Caviomorpha clade and support for Hystricognathi based on the complete mitochondrial genome of the cane rat (Thryonomys swinderianus)
    S K Mouchaty
    Division of Evolutionary Molecular Systematics, Institute of Genetics, University of Lund, Solvegatan 29, S 223 62 Lund, Sweden
    Mol Phylogenet Evol 18:127-35. 2001
    ..Monophyly of Rodentia or the superordinal clade Glires (Rodentia and Lagomorpha) were not supported...
  19. ncbi request reprint Mitogenomic analyses of caniform relationships
    Ulfur Arnason
    Department of Cell and Organism Biology, Division of Evolutionary Molecular Systematics, University of Lund, S 223 62 Lund, Sweden
    Mol Phylogenet Evol 45:863-74. 2007
    ..The mitogenomic result is inconsistent with that understanding at the same time as it provides insight into the time of the domestication of the dog relative to basal human mitogenomic divergences...
  20. ncbi request reprint The mitochondrial genome of the pufferfish, Fugu rubripes, and ordinal teleostean relationships
    Christian Elmerot
    Department of Genetics, Division of Evolutionary Molecular Systematics, University of Lund, Solvegatan 29, S 223 62, Lund, Sweden
    Gene 295:163-72. 2002
    ..In addition the findings strongly suggest that three teleostean orders, the Perciformes, Zeiformes and Scorpaeniformes, are paraphyletic...
  21. ncbi request reprint Pinniped phylogeny and a new hypothesis for their origin and dispersal
    Ulfur Arnason
    Department of Cell and Organism Biology, Division of Evolutionary Molecular Systematics, University of Lund, S 223 62 Lund, Sweden
    Mol Phylogenet Evol 41:345-54. 2006
    ....
  22. ncbi request reprint Phylogenetic analysis of 18S rRNA and the mitochondrial genomes of the wombat, Vombatus ursinus, and the spiny anteater, Tachyglossus aculeatus: increased support for the Marsupionta hypothesis
    Axel Janke
    Department of Genetics, Division of Evolutionary Molecular Systematics, University of Lund, Solvegatan 29, S 223 62 Lund, Sweden
    J Mol Evol 54:71-80. 2002
    ....
  23. ncbi request reprint Mitogenomic analyses place the gharial (Gavialis gangeticus) on the crocodile tree and provide pre-K/T divergence times for most crocodilians
    Axel Janke
    Department of Cell and Organism Biology, Division of Evolutionary Molecular Systematics, University of Lund, Solvegatan 29, S 223 62 Lund, Sweden
    J Mol Evol 61:620-6. 2005
    ..The results suggest that at least five crocodilian lineages survived the mass extinction at the KT boundary...
  24. ncbi request reprint Cetacean mitochondrial DNA control region: sequences of all extant baleen whales and two sperm whale species
    U Arnason
    Department of Molecular Genetics, University of Lund, Sweden
    Mol Biol Evol 10:960-70. 1993
    ..The gray whale was included in a clade together with the sei, Bryde's, fin, blue, and humpback whales. This clade was separated from the two minke whale types, which branched together...
  25. pmc Molecular studies suggest that cartilaginous fishes have a terminal position in the piscine tree
    A S Rasmussen
    Department of Genetics, Division of Evolutionary Molecular Systematics, University of Lund, Solvegatan 29, S 223 62 Lund, Sweden
    Proc Natl Acad Sci U S A 96:2177-82. 1999
    ..The split between gnathostome fishes and the amniote lineage was dated at approximately 420 million years before present...
  26. ncbi request reprint The mitochondrial DNA molecule of Sumatran orangutan and a molecular proposal for two (Bornean and Sumatran) species of orangutan
    X Xu
    Division of Evolutionary Molecular Systematics, University of Lund, Solvegatan 29, S 223 62 Lund, Sweden
    J Mol Evol 43:431-7. 1996
    ..On the basis of their molecular distinction we propose that the two orangutans should be recognized as different species, Pongo pygmaeus, Bornean orangutan, and P. abelii, Sumatran orangutan...
  27. ncbi request reprint Two new avian mitochondrial genomes (penguin and goose) and a summary of bird and reptile mitogenomic features
    Kerryn E Slack
    Division of Evolutionary Molecular Systematics, Department of Cell and Organism Biology, University of Lund, Solvegatan 29, S 223 62, Lund, Sweden
    Gene 302:43-52. 2003
    ..The three best supported positions of the root were passerine, but the traditional rooting position between paleognaths and neognaths could not be excluded...
  28. pmc Analyses of mitochondrial genomes strongly support a hippopotamus-whale clade
    B M Ursing
    Department of Genetics, Lund University, Sweden
    Proc Biol Sci 265:2251-5. 1998
    ..Artiodactyla and the suborder. Suiformes paraphyletic. The divergence between the hippopotamid and cetacean lineages was calculated using this molecular data and was estimated at ca. 54 Ma BP...
  29. ncbi request reprint The complete nucleotide sequence of the mitochondrial DNA of the fin whale, Balaenoptera physalus
    U Arnason
    Department of Molecular Genetics, University of Lund, Wallenberg Laboratory, Sweden
    J Mol Evol 33:556-68. 1991
    ..The comparison between the cytochrome b sequences of the fin whale and Stenella showed that differences in codon positions one or two were frequently associated with a change in another codon position...
  30. ncbi request reprint The complete mitochondrial DNA sequence of the pig (Sus scrofa)
    B M Ursing
    Department of Genetics, Division of Evolutionary Molecular Systematics, University of Lund, S 223 62 Lund, Sweden
    J Mol Evol 47:302-6. 1998
    ..The analysis identified the pig (Suiformes) as a sister group of a cow/whale clade, making Artiodactyla paraphyletic. The split between pig and cow/whale was molecularly dated at 65 million years before present...
  31. ncbi request reprint The nucleotide sequence of the mitochondrial DNA molecule of the grey seal, Halichoerus grypus, and a comparison with mitochondrial sequences of other true seals
    U Arnason
    Department of Molecular Genetics, University of Lund, Wallenberg Laboratory, Sweden
    J Mol Evol 37:323-30. 1993
    ..Comparison with the cytochrome b gene of the Hawaiian monk seal and the Weddell seal suggested that the lineage of these two species and that of the grey and harbor seals separated approximately 8 million years ago...
  32. ncbi request reprint A complete sequence of the mitochondrial genome of the western lowland gorilla
    X Xu
    Division of Evolutionary Molecular Systematics, University of Lund, Sweden
    Mol Biol Evol 13:691-8. 1996
    ..The analysis of the peptide-coding genes suggest that relative to comparison between Homo and Pan a certain degree of transition saturation has taken place in codon position 3 in comparisons between Gorilla to either Homo or Pan...
  33. doi request reprint Examining the utility of categorical models and alleviating artifacts in phylogenetic reconstruction of the Squamata (Reptilia)
    D A Douglas
    Division of Evolutionary Molecular Systematics, Department of Cell and Organism Biology, University of Lund, Solvegatan 29, 22362 Lund, Sweden
    Mol Phylogenet Evol 52:784-96. 2009
    ..Thus, mt and nuclear trees may never reach full agreement because of the short branches characterizing these divergences...
  34. ncbi request reprint Mitogenomic analyses of eutherian relationships
    U Arnason
    Division of Evolutionary Molecular Systematics, University of Lund, Lund
    Cytogenet Genome Res 96:20-32. 2002
    ..For example, the divergence between Homo and Pan is estimated to have taken place approximately 10 MYBP, a dating consistent with recent findings in primate paleontology...
  35. ncbi request reprint Phylogenetic studies of complete mitochondrial DNA molecules place cartilaginous fishes within the tree of bony fishes
    A S Rasmussen
    Department of Genetics, Division of Evolutionary Molecular Systematics, University of Lund, Solvegatan 29, S 223 62 Lund
    J Mol Evol 48:118-23. 1999
    ..The study also confirmed recent findings demonstrating that the origin of the amniotes is deeper than the diversification of extant bony fishes...
  36. ncbi request reprint The complete mitochondrial genome of Rhea americana and early avian divergences
    A Härlid
    Division of Evolutionary Molecular Systematics, Department of Genetics, University of Lund, Solvegatan 29, S 223 62 Lund, Sweden
    J Mol Evol 46:669-79. 1998
    ..These findings challenge the commonly accepted notion that the most basal avian divergence is that between the Palaeognathae and Neognathae...
  37. ncbi request reprint The mtDNA sequence of the ostrich and the divergence between paleognathous and neognathous birds
    A Härlid
    Department of Genetics, University of Lund, Sweden
    Mol Biol Evol 14:754-61. 1997
    ....
  38. ncbi request reprint The complete mitochondrial genome of Alligator mississippiensis and the separation between recent archosauria (birds and crocodiles)
    A Janke
    Department of Genetics, University of Lund, Sweden
    Mol Biol Evol 14:1266-72. 1997
    ..Maximum-likelihood branch length data of amino acid sequences suggest that the divergence between the avian and crocodilian lineages took place at approximately equal to 254 MYA...
  39. pmc The mitochondrial genomes of the iguana (Iguana iguana) and the caiman (Caiman crocodylus): implications for amniote phylogeny
    A Janke
    Department of Genetics, University of Lund, Sweden
    Proc Biol Sci 268:623-31. 2001
    ..Phylogenetic analysis of mammalian relationships using the additional outgroups corroborated the Marsupionta hypothesis, which joins the monotremes and the marsupials to the exclusion of the eutherians...
  40. ncbi request reprint The complete mitochondrial DNA sequence of the white rhinoceros, Ceratotherium simum, and comparison with the mtDNA sequence of the Indian rhinoceros, Rhinoceros unicornis
    X Xu
    Division of Evolutionary Molecular Systematics, University of Lund, Sweden
    Mol Phylogenet Evol 7:189-94. 1997
    ..The calculation suggested that this divergence took place approximately 27 million years before present...
  41. ncbi request reprint Relationship of baleen whales established by cytochrome b gene sequence comparison
    U Arnason
    Department of Genetics, University of Lund, Sweden
    Nature 367:726-8. 1994
    ..1 were correct. Here we present a more comprehensive phylogenetic analysis that demonstrates the monophyly of mysticetes and identifies no particular affinity between the sperm whales and rorquals...
  42. ncbi request reprint The mitochondrial DNA molecule of the hagfish (Myxine glutinosa) and vertebrate phylogeny
    A S Rasmussen
    Department of Genetics, University of Lund, Sweden
    J Mol Evol 46:382-8. 1998
    ..The findings portray a hitherto unrecognized polarity in the evolution of bony fishes. The presently established relationships are incompatible with previous molecular studies...
  43. ncbi request reprint The phylogenetic position of the Talpidae within eutheria based on analysis of complete mitochondrial sequences
    S K Mouchaty
    Department of Genetics, University of Lund, Sweden
    Mol Biol Evol 17:60-7. 2000
    ....
  44. ncbi request reprint Sequence analysis of the complete mitochondrial DNA molecule of the hedgehog, Erinaceus europaeus, and the phylogenetic position of the Lipotyphla
    A Krettek
    Division of Evolutionary Molecular Systematics, University of Lund, Sweden
    J Mol Evol 41:952-7. 1995
    ..The analysis did not resolve the relationship among carnivores, perissodactyls, and artiodactyls/cetaceans, suggesting a closer relationship among these orders than acknowledged by classical approaches...
  45. ncbi request reprint A molecular view of pinniped relationships with particular emphasis on the true seals
    U Arnason
    Division of Evolutionary Molecular Systematics, University of Lund, Sweden
    J Mol Evol 40:78-85. 1995
    ..This result stands in contrast to the limited morphological differentiation relative to the pronounced molecular distinctions that may occur within the Phoca complex...
  46. ncbi request reprint The complete mitochondrial DNA sequence of the horse, Equus caballus: extensive heteroplasmy of the control region
    X Xu
    Division of Evolutionary Molecular Systematics, Lund, Sweden
    Gene 148:357-62. 1994
    ..The number of repeats ranged from 2 to 29. There was a pronounced overrepresentation of clones with many repeats (22-27). Very few clones had a repeat number that was close to the mean number of repeats...
  47. ncbi request reprint The complete mitochondrial DNA sequence of the harbor seal, Phoca vitulina
    U Arnason
    Department of Molecular Genetics, University of Lund, Wallenberg Laboratory, Sweden
    J Mol Evol 34:493-505. 1992
    ..In this tree the whale and the cow join first, and this clade is most closely related to the seal...
  48. ncbi request reprint Mitochondrial DNA sequence evolution and phylogeny of the Atlantic Alcidae, including the extinct great auk (Pinguinus impennis)
    Truls Moum
    Department of Molecular Biotechnology, Institute of Medical Biology, University of Tromsø, Norway
    Mol Biol Evol 19:1434-9. 2002
    ....
  49. ncbi request reprint Resolving the root of the avian mitogenomic tree by breaking up long branches
    Kerryn E Slack
    Allan Wilson Center for Molecular Ecology and Evolution, Massey University, Palmerston North, New Zealand
    Mol Phylogenet Evol 42:1-13. 2007
    ..Incomplete taxon sampling was also a problem for Neoaves, and although some resolution is now available there are still problems because current phylogenetic methods still fail to account for real features of DNA sequence evolution...
  50. ncbi request reprint Early penguin fossils, plus mitochondrial genomes, calibrate avian evolution
    Kerryn E Slack
    Allan Wilson Center for Molecular Ecology and Evolution, Institute of Molecular Biosciences, Massey University, Palmerston North, New Zealand
    Mol Biol Evol 23:1144-55. 2006
    ....
  51. ncbi request reprint Molecular evolution of the mammalian alpha 2B adrenergic receptor
    Ole Madsen
    Department of Biochemistry 161, University of Nijmegen, 6500 HB Nijmegen, The Netherlands
    Mol Biol Evol 19:2150-60. 2002
    ..Among Laurasiatheria, A2AB confirms the nesting of whales within the artiodactyls, as a sister group to hippopotamus. Within the Euarchontoglires, there is constant support for rodent monophyly...
  52. ncbi request reprint Comments on the paper "Phylogeny of mysticete whales based on mitochondrial and nuclear data" by Amanda L. Rychel, Tod W. Reeder, and Annalisa Berta [Mol. Phylogenet. Evol. 32 (2004) 892-901]
    Ulfur Arnason
    Mol Phylogenet Evol 35:309-10; author reply 311-2. 2005