Dr Peter Olson

Dr Peter Olson

Researcher

Department: Life Sciences
Division: LS Parasites and Vectors Division
Contact: email
Phones:
work: 0207 942 5568
lab: 0207 942 5427
The Olson Lab Website

Specialisms

Development and Genomics of Parasitic Flatworms, Evolution

Summary

Our research is directed at understanding the patterns and processes underlying animal diversity and focuses on flatworms (phylum Platyhelminthes), a group of more than 50,000 free-living, symbiotic and parasitic species, including pathogens that have a major negative impact on our health and economy. Although much research is directed at their control and eradication, their extraordinary regenerative properties and complex life histories also make them useful models in evolutionary and developmental biology. We work in a collections-based institute with a strong emphasis on research in the areas of Biodiversity, Systematics and Phylogenetics. In addition to these areas, we also address questions in the fields of Evo-Devo and Genomics using model organisms in the laboratory. We collaborate with many labs around the world and are always happy to hear from people with shared interests!

Qualifications

Degrees

PhD, University of Connecticut, United States, 1993 - 1998

MSc, University of Nebraska-Lincoln, United States, 1991 - 1993

BSc, University of Nebraska-Lincoln, United States, 1987 - 1991

Highlighted publications

Pouchkina-stantcheva NN, Cunningham LJ, Hrckova PD, Olson PD (2013) RNA-mediated gene suppression and in vitro culture in Hymenolepis microstoma. International Journal for Parasitology, 43 (8) : 641 - 646. doi: 10.1016/j.ijpara.2013.03.004

Tsai IJ, Zarowiecki M, Holroyd N, Garciarrubio A, Sanchez-flores A, et al. (2013) The genomes of four tapeworm species reveal adaptations to parasitism. Nature, 496 (7443) : 57 - 63. doi: 10.1038/nature12031

Riddiford N, Olson PD (2011) Wnt gene loss in flatworms. Development Genes and Evolution, 221 (4) : 187 - 197. doi: 10.1007/s00427-011-0370-8

Olson PD, Cribb TH, Tkach VV, Bray RA, Littlewood DTJ (2003) Phylogeny and classification of the Digenea (Platyhelminthes: Trematoda). International Journal for Parasitology, 33 (7) : 733 - 755. doi: 10.1016/s0020-7519(03)00049-3

Olson PD, Littlewood DT, Bray RA, Mariaux J (2001) Interrelationships and evolution of the tapeworms (Platyhelminthes: Cestoda).. Mol Phylogenet Evol, 19 (3) : 443 - 467. doi: 10.1006/mpev.2001.0930

Publications

Fraija-fernández N, Olson PD, Crespo EA, Raga JA, Aznar FJ, Fernández M (2015) Independent host switching events by digenean parasites of cetaceans inferred from ribosomal DNA. International Journal for Parasitology, 45 : 167 - 173. doi: 10.1016/j.ijpara.2014.10.004

Kuchta R, Pearson R, Scholz T, Ditrich O, Olson PD (2014) Spathebothriidea: survey of species, scolex and egg morphology, and interrelationships of a non-segmented, relictual tapeworm group (Platyhelminthes: Cestoda).. Folia Parasitol (Praha), 61 (4) : 331 - 346.

Caira JN, Jensen K, Waeschenbach A, Olson PD, Littlewood DTJ (2014) Orders out of chaos – molecular phylogenetics reveals the complexity of shark and stingray tapeworm relationships. International Journal for Parasitology, 44 (1) : 55 - 73. doi: 10.1016/j.ijpara.2013.10.004

Pouchkina-stantcheva NN, Cunningham LJ, Hrckova PD, Olson PD (2013) RNA-mediated gene suppression and in vitro culture in Hymenolepis microstoma. International Journal for Parasitology, 43 (8) : 641 - 646. doi: 10.1016/j.ijpara.2013.03.004

Tsai IJ, Zarowiecki M, Holroyd N, Garciarrubio A, Sanchez-flores A, Brooks KL, Et al.includingPOUCHKINA-STANTCHEVAN, Riddiford N, Olson PD (2013) The genomes of four tapeworm species reveal adaptations to parasitism. Nature, 496 (7443) : 57 - 63. doi: 10.1038/nature12031

Galaktionov KV, Blasco-costa I, Olson PD (2012) Life cycles, molecular phylogeny and historical biogeography of the 'pygmaeus' microphallids (Digenea: Microphallidae): widespread parasites of marine and coastal birds in the Holarctic. Parasitology, 139 (10) : 1346 - 1360. doi: 10.1017/s0031182012000583

Brabec J, Scholz T, Kral'ová-hromadová I, Bazsalovicsová E, Olson PD (2012) Substitution saturation and nuclear paralogs of commonly employed phylogenetic markers in the Caryophyllidea, an unusual group of non-segmented tapeworms (Platyhelminthes). International Journal for Parasitology, 42 (3) : 259 - 267. doi: 10.1016/j.ijpara.2012.01.005

Olson PD, Zarowiecki M, Kiss F, Brehm K (2012) Invited Review: Cestode genomics - progress and prospects for advancing basic and applied aspects of flatworm biology. Parasite Immunology, 34 : 130 - 150. doi: 10.1111/j.1365-3024.2011.01319.x

Pouchkina-stantcheva NN, Cunningham LJ, Olson PD (2011) Spatial and temporal consistency of putative reference genes for real-time PCR in a model tapeworm. Molecular and Biochemical Parasitology, 180 (2) : 120 - 122. doi: 10.1016/j.molbiopara.2011.08.004

Riddiford N, Olson PD (2011) Wnt gene loss in flatworms. Development Genes and Evolution, 221 (4) : 187 - 197. doi: 10.1007/s00427-011-0370-8

Hrčkova G, Miterpáková M, O'connor A, Šnábel V, Olson PD (2010) Molecular and morphological circumscription of Mesocestoides tapeworms from red foxes (Vulpes vulpes) in central Europe. Parasitology, 138 (5) : doi: 10.1017/S0031182011000047

Cunningham LJ, Olson PD (2010) Description of Hymenolepis microstoma (Nottingham strain): a classical tapeworm model for research in the genomic era. Parasites & Vectors, 3 (1) : 123 - 123. doi: 10.1186/1756-3305-3-123

Blasco-costa I, Balbuena JA, Raga JA, Kostadinova A, Olson PD (2010) Molecules and morphology reveal cryptic variation among digeneans infecting sympatric mullets in the Mediterranean. Parasitology, 137 (2) : 287 - 302. doi: 10.1017/S0031182009991375

Olson PD, Caira JN, Jensen K, Overstreet RM, Palm HW, Beveridge I (2010) Evolution of the trypanorhynch tapeworms: Parasite phylogeny supports independent lineages of sharks and rays. International Journal for Parasitology, 40 (2) : 223 - 242. doi: 10.1016/j.ijpara.2009.07.012

Blasco-costa I, Balbuena JA, Konstadinova A, Olson PD (2009) Interrelationships of the Haploporinae (Digenea: Haploporidae): a molecular test of the taxonomic framework based on morphology. Parasitology International, 58 (3) : 263 - 269. doi: 10.1016/j.parint.2009.03.006

Palm HW, Waeschenbach A, Olson PD, Littlewood DTJ (2009) Molecular phylogeny and evolution of the Trypanorhyncha Diesing, 1863 (Platyhelminthes: Cestoda). Molecular Phylogenetics and Evolution, 52 (2) : 351 - 367. doi: 10.1016/j.ympev.2009.01.019

Olson PD, Poddubnaya LG, Littlewood DTJ, Scholz T (2008) On the position of Archigetes and its bearing on the early evolution of the tapeworms. Journal of Parasitology, 94 (4) : 898 - 904. doi: 10.1645/GE-1456.1

Olson PD (2007) Hox genes and the parasitic flatworms: New opportunities, challenges and lessons from the free-living. Parasitology International, 57 (1) : 8 - 17. doi: 10.1016/j.parint.2007.09.007

Olson PD (2008) Invited Review: Hox genes and the parasitic flatworms: new opportunities, challenges and lessons from the free-living. Parasitology International, 57 : 8 - 17.

Marques JF, Santos MJ, Gibson DI, Cabral HN, Olson PD (2007) Cryptic species of Didymobothrium ruolphii (Cestoda: Spathebothriidae) from the sand sole, Solea lascaris, off the Portuguese coast, with an analysis of their molecules, morphology, ultratructure and phylogeny. Parasitology, 134 (7) : 1057 - 1072. doi: 10.1017/S0031182007002491

Poddubnaya LG, Gibson DI, Olon PD (2007) Ultrastructure of the ovary, ovicapt and oviduct of the spathebothriidean tapeworm Didymobothrium rudolphii (Monticelli, 1890). Acta Parasitologia, 52 (2) : 127 - 134. doi: 10.2478/s11686-007-0014-3

Huys R, Llewellyn-hughes J, Conroy-dalton S, Olson PD, Spinks JN, Johnston DA (2007) Extraordinary host switching in siphonostomatoid copepods and the demise of the Monstrilloida: Integrating molecular data, ontogeny and antennulary morphology. Molecular Phylogentics and Evolution, 43 (2) : 368 - 378. doi: 10.1016/j.ympev.2007.02.004

Aznar FJ, Agusti C, Littlewood DTJ, Raga JA, Olson PD (2007) Insight into the role of cetaceans in the life cycle of the tetraphyllideans (Platyhelminthes: Cestoda). International Journal of Parasitology, 37 (2) : 243 - 255. doi: 10.1016/j.ijpara.2006.10.010

Otranto D, Rehbein S, Weigl S, Cantacessi C, Parisi A, Lia RP, Olson PD (2007) Morphological and molecular differentiation between Dicrocoelium dendriticum (Rudolphi, 1819) and Dicrocoelium chinensis (Sudarikov and Ryjikov, 1951) Tand and Rang, 1978 (Platyhelminthes: Digenea). Acta Tropica, 104 : 91 - 98. doi: 10.1016/j.actatropica.2007.07.008

Poddubnaya LG, Gibson DI, Świderski Z, Olson PD (2006) Vitellocyte ultrastructure in the cestode Didymobothrium rudolphii (Monticelli, 1890): possible evidence for the recognition of divergent taxa within the Spathebothriidea. Acta Parasitologica, 51 (4) : 255 - 263. doi: 10.2478/s11686-006-0039-z

Huys R, Llewellyn-hughes J, Olson PD, Nagasawa K (2006) Small subunit rDNA and Bayesian inference reveal Pectenophilus ornatus (Copepoda incertae sedis) as highly transformed Mytilicolidae, and support assignment of Chrondracanthidae and Xarifiidae to Lichomolgoidea (Cyclopoida). Biological Journal of the Linnean Society, 87 (3) : 403 - 425. doi: 10.1111/j.1095-8312.2005.00579.x

Literak I, Tenora F, Letkova V, Goldova M, Torres J, Olson PD (2006) Mesocestoides litteratus (Batsch, 1786) (Cestoda: Cyclophyllidae: Mesocestoididae) from the red fox: morphological and 18S rDNA characterization of European isolates. Helminthologia, 43 : 191 - 195.

Marques JF, Santos MJ, Olson PD, Cabral HN, Gibson DI (2006) Morphology and genetics of a key species in relation to cestode evolution, Didymobothrium rudolphii (Monticelli, 1890) Nybelin, 1922. International Congress of Parasitology XI,

Plaisance L, Littlewood DTJ, Olson PD, Morand S (2005) Molecular phylogeny of gill monogeneans (Platyhelminthes, Monogenea: Dactylogyridae) and colonization of Indo-West Pacific butterfly fish hosts (Perciformes, Chaetodontidae). Zoologica Scripta, 34 (4) : 425 - 436. doi: 10.1111/j.1463-6409.2005.00191.x

Garin YKF, Galan-puchades MT, Moulignier A, Robert G, Heran F, Polivka M, Olson PD, Lorenzo F, Derouin F, Conn DB (2005) Case Report: Human brain abscess due to a tetra-acetabulate plerocercoid metacestsode (Cyclophillidea). American Journal of Tropical Medicine and Hygiene, 72 (5) : 513 - 517.

Agustí C, Aznar FJ, Olson PD, Littlewood DTJ, Kostadinova A, Raga JA (2005) Morphological and molecular characterization of tetraphyllidean merocercoids (Platyhelminthes: Cestoda) of striped dolphins (Stenella coeruleoalba) from the Western Mediterranean. Parasitology, 130 (4) : 461 - 474. doi: 10.1017/S0031182004006754

Agusti C, Aznar FJ, Olson PD, Littlewood DTJ, Kostadinova A, Raga JA (2005) Morphological and molecular characterization of tetraphylllidean merocercoids of striped dolphins from the western Mediterranean.. Parasitology, 130 : 159 - 167.

Olson PD, Tkach VV (2005) Advances and trends in the molecular systematics of the parasitic playhelminthes. Advances in Parasitology, 60 : 165 - 243. doi: 10.1016/S0065-308X(05)60003-6

Bray RA, Olson PD (2004) The plerocercus of Ditrachybothridium macrocephalum Rees, 1959 from two deep-sea elasmobranches, with molecular analysis of its position within the order of Diphyllidea and a checklist of the hosts of larval diphyllideans. Systematic Parasitology, 59 (3) : 159 - 167. doi: 10.1023/B:SYPA.0000048101.99985.dc

Literak I, Olson PD, Georgiev B, Pakulova M (2004) First record of metacestodes of Mesocestoides sp. in the common starling (Sturnis vulgaris) in Europe, with an 18S rDNA characterization of the isolate. Folia Parasitologica, 51 (1) : 45 - 49. doi: 10.14411/fp.2004.006

Tkach VV, Littlewood DTJ, Olson PD, Kinsella JM, Swiderski Z (2003) Molecular Phylogenetic analysis of the Microphalloidea Ward, 1901 (Trematoda: Digenea). Systematic Parasitology, 56 (1) : 1 - 15. doi: 10.1023/A:1025546001611

Olson PD, Cribb TH, Tkach VV, Bray RA, Littlewood DTJ (2003) Phylogeny and classification of the Digenea (Platyhelminthes: Trematoda). International Journal for Parasitology, 33 (7) : 733 - 755. doi: 10.1016/s0020-7519(03)00049-3

Olson PD, Yoder K, Fajaro LFLG, Marty AM, Van dePasS, Olivier C, Relman DA (2003) Lethal invasive cestodiasis in immunosuppressed patients. Journal of Infectious Diseases, 187 (12) : 1962 - 1966. doi: 10.1086/375357

Lockyer AE, Olson PD, Ostergaard P, Rollinson D, Johnston DA, Attwood SW, Southgate VR, Horak P, Snyder SD, Le TH, Agatsuma T, Mcmanus DP, Carmichael AC, Littlewood DTJ (2003) The phylogeny of the Schistosomatidae based on three genes with emphasis on the interrelationships of Schistosoma Weinland, 1858. Parasitology, 126 (3) : 203 - 224. doi: 10.1017/S0031182002002792

Lockyer AE, Olson PD, Littlewood DTJ (2003) Utility of complete large and small subunit rRNA genes in resolving the phylogeny of the Platyhelminthes: implications and a review of the cercomer theory. Biological Journal of the Linnean Society, 78 (2) : 155 - 171. doi: 10.1046/j.1095-8312.2003.00141.x

Cribb TH, Bray RA, Olson PD, Littlewood DT (2003) Life cycle evolution in the digenea: a new perspective from phylogeny.. Adv Parasitol, 54 : 197 - 254. doi: 10.1016/s0065-308x(03)54004-0

Reyda FB, Olson PD (2003) Cestodes of cestodes of Peruvian freshwater stingrays. Journal of Parasitology, 89 : 1018 - 1024.

Olson PD, Littlewood DT, Griffiths D, Kennedy CR, Arme C (2002) Evidence for the co-existence of separate strains or species of Ligula in Lough Neagh, Northern Ireland.. J Helminthol, 76 (2) : 171 - 174. doi: 10.1079/JOH2001101

Olson PD (2002) Phylogenetics of the Monogenea – evidence from a medley of molecules. International Journal for Parasitology, 32 (3) : 233 - 244. doi: 10.1016/S0020-7519(01)00328-9

Bray RA, Olson PD, Cribb TH, Littlewood DTJ (2002) Frangible fluke phylogenies: delineating digenean descent. The British Society for Parasitology Spring Meeting,

Brickle P, Olson PD, Littlewood D, Bishop A, Arkhipkin AI (2001) Parasites of Loligo gahi from waters off the Falkland Islands, with a phylogenetically based identification of their cestode larvae. CANADIAN JOURNAL OF ZOOLOGY-REVUE CANADIENNE DE ZOOLOGIE, 79 (12) : 2289 - 2296. doi: 10.1139/cjz-79-12-2289

Olson PD, Littlewood DT, Bray RA, Mariaux J (2001) Interrelationships and evolution of the tapeworms (Platyhelminthes: Cestoda).. Mol Phylogenet Evol, 19 (3) : 443 - 467. doi: 10.1006/mpev.2001.0930

Littlewood DTJ, Cribb TH, Olson PD, Bray RA (2001) Platyhelminth phylogenetics - a key to understanding parasitism?. BELGIAN JOURNAL OF ZOOLOGY, 131 : 35 - 46.

Littlewood DTJ, Olson PD, Telford MJ, Herniou EA, Riutort M (2001) Elongation Factor 1-Alpha Sequences Alone Do Not Assist in Resolving the Position of the Acoela Within the Metazoa. Molecular Biology and Evolution, 18 (3) : 437 - 442. doi: 10.1093/oxfordjournals.molbev.a003821

Olson PD, Caira JN (2001) Two new species of Litobothrium Dailey, 1969 (Cestoda: Litobothriidea) from thresher sharks in the Gulf of California, Mexico, with redescriptions of two species in the genus. Systematic Parasitology, 48 (3) : 159 - 177. doi: 10.1023/A:1006422419580

Littlewood DTJ, Olson PD (2001) Small subunit rDNA and the Platyhelminthes: Signal, noise, conflict and compromise, In: Interrelationship of the Platyhelminthes, Taylor & Francis : 262 - 278.

Scholz T, Shimazu T, Olson PD, Nagasawa K (2001) Caryophyllidean tapeworms (Platyhelminthes: Eucestoda) from freshwater fishes in Japan. Folia Parasitologica, 48 (4) : 275 - 288. doi: 10.14411/fp.2001.046

Mariaux J, Olson PD (-1) Cestode systematics in molecular era, In: Interrelationships of the Platyhelminthes, Littlewood DTJ, Bray RA (Eds). Taylor & Francis : 127 - 134.

Olson PD (2000) New Insights into Platyhelminth Systematics and Evolution. Parasitology Today, 16 (1) : 3 - 5. doi: 10.1016/S0169-4758(99)01555-0

Olson PD, Caira JN (1999) Evolution of the major lineages of tapeworms (Platyhelminthes: Cestoidea) inferred from 18S ribosomal DNA and elongation factor-1alpha.. J Parasitol, 85 (6) : 1134 - 1159. doi: 10.2307/3285679

Olson PD, Ruhnke TR, Sanney J, Hudson T (1999) Evidence for host-specific clades of tetraphyllidean tapeworms (Platyhelminthes: Eucestoda) revealed by analysis of 18S ssrDNA. International Journal for Parasitology, 29 (9) : 1465 - 1476. doi: 10.1016/S0020-7519(99)00106-X

Olson PD, Nickol BB (1996) Comparison of Leptorhynchoides thecatus (Acanthocephala) recruitment in green sunfish and largemouth bass populations. Journal of Parasitology, 82 : 702 - 706.

Santamaria-fries M, Fajardo L-GLF, Sogin ML, Olson PD, Relman DA (1996) Lethal infection by a previously unrecognized metazoan parasite. The Lancet, 347 : 1797 - 1801.

Olson PD, Nickol BB (1995) Effects of low temperature on the development of Leptorhynchoides thecatus (Acanthocephala) in Lepomis cyanellus (Centrarchidae). Journal of the Helminthological Society of Washington, 62 : 44 - 47.

Introduction

Summary

Our research is directed at understanding the patterns and processes underlying animal diversity and focuses on flatworms (phylum Platyhelminthes), a group of more than 50,000 free-living, symbiotic and parasitic species, including pathogens that have a major negative impact on our health and economy. Although much research is directed at their control and eradication, their extraordinary regenerative properties and complex life histories also make them useful models in evolutionary and developmental biology. We work in a collections-based institute with a strong emphasis on research in the areas of Biodiversity, Systematics and Phylogenetics. In addition to these areas, we also address questions in the fields of Evo-Devo and Genomics using model organisms in the laboratory. We collaborate with many labs around the world and are always happy to hear from people with shared interests!

Qualifications

Degrees

PhD, University of Connecticut, United States, 1993 - 1998

MSc, University of Nebraska-Lincoln, United States, 1991 - 1993

BSc, University of Nebraska-Lincoln, United States, 1987 - 1991

Highlighted publications

Pouchkina-stantcheva NN, Cunningham LJ, Hrckova PD, Olson PD (2013) RNA-mediated gene suppression and in vitro culture in Hymenolepis microstoma. International Journal for Parasitology, 43 (8) : 641 - 646. doi: 10.1016/j.ijpara.2013.03.004

Tsai IJ, Zarowiecki M, Holroyd N, Garciarrubio A, Sanchez-flores A, et al. (2013) The genomes of four tapeworm species reveal adaptations to parasitism. Nature, 496 (7443) : 57 - 63. doi: 10.1038/nature12031

Riddiford N, Olson PD (2011) Wnt gene loss in flatworms. Development Genes and Evolution, 221 (4) : 187 - 197. doi: 10.1007/s00427-011-0370-8

Olson PD, Cribb TH, Tkach VV, Bray RA, Littlewood DTJ (2003) Phylogeny and classification of the Digenea (Platyhelminthes: Trematoda). International Journal for Parasitology, 33 (7) : 733 - 755. doi: 10.1016/s0020-7519(03)00049-3

Olson PD, Littlewood DT, Bray RA, Mariaux J (2001) Interrelationships and evolution of the tapeworms (Platyhelminthes: Cestoda).. Mol Phylogenet Evol, 19 (3) : 443 - 467. doi: 10.1006/mpev.2001.0930

Publications

Publications

Fraija-fernández N, Olson PD, Crespo EA, Raga JA, Aznar FJ, Fernández M (2015) Independent host switching events by digenean parasites of cetaceans inferred from ribosomal DNA. International Journal for Parasitology, 45 : 167 - 173. doi: 10.1016/j.ijpara.2014.10.004

Kuchta R, Pearson R, Scholz T, Ditrich O, Olson PD (2014) Spathebothriidea: survey of species, scolex and egg morphology, and interrelationships of a non-segmented, relictual tapeworm group (Platyhelminthes: Cestoda).. Folia Parasitol (Praha), 61 (4) : 331 - 346.

Caira JN, Jensen K, Waeschenbach A, Olson PD, Littlewood DTJ (2014) Orders out of chaos – molecular phylogenetics reveals the complexity of shark and stingray tapeworm relationships. International Journal for Parasitology, 44 (1) : 55 - 73. doi: 10.1016/j.ijpara.2013.10.004

Pouchkina-stantcheva NN, Cunningham LJ, Hrckova PD, Olson PD (2013) RNA-mediated gene suppression and in vitro culture in Hymenolepis microstoma. International Journal for Parasitology, 43 (8) : 641 - 646. doi: 10.1016/j.ijpara.2013.03.004

Tsai IJ, Zarowiecki M, Holroyd N, Garciarrubio A, Sanchez-flores A, Brooks KL, Et al.includingPOUCHKINA-STANTCHEVAN, Riddiford N, Olson PD (2013) The genomes of four tapeworm species reveal adaptations to parasitism. Nature, 496 (7443) : 57 - 63. doi: 10.1038/nature12031

Galaktionov KV, Blasco-costa I, Olson PD (2012) Life cycles, molecular phylogeny and historical biogeography of the 'pygmaeus' microphallids (Digenea: Microphallidae): widespread parasites of marine and coastal birds in the Holarctic. Parasitology, 139 (10) : 1346 - 1360. doi: 10.1017/s0031182012000583

Brabec J, Scholz T, Kral'ová-hromadová I, Bazsalovicsová E, Olson PD (2012) Substitution saturation and nuclear paralogs of commonly employed phylogenetic markers in the Caryophyllidea, an unusual group of non-segmented tapeworms (Platyhelminthes). International Journal for Parasitology, 42 (3) : 259 - 267. doi: 10.1016/j.ijpara.2012.01.005

Olson PD, Zarowiecki M, Kiss F, Brehm K (2012) Invited Review: Cestode genomics - progress and prospects for advancing basic and applied aspects of flatworm biology. Parasite Immunology, 34 : 130 - 150. doi: 10.1111/j.1365-3024.2011.01319.x

Pouchkina-stantcheva NN, Cunningham LJ, Olson PD (2011) Spatial and temporal consistency of putative reference genes for real-time PCR in a model tapeworm. Molecular and Biochemical Parasitology, 180 (2) : 120 - 122. doi: 10.1016/j.molbiopara.2011.08.004

Riddiford N, Olson PD (2011) Wnt gene loss in flatworms. Development Genes and Evolution, 221 (4) : 187 - 197. doi: 10.1007/s00427-011-0370-8

Hrčkova G, Miterpáková M, O'connor A, Šnábel V, Olson PD (2010) Molecular and morphological circumscription of Mesocestoides tapeworms from red foxes (Vulpes vulpes) in central Europe. Parasitology, 138 (5) : doi: 10.1017/S0031182011000047

Cunningham LJ, Olson PD (2010) Description of Hymenolepis microstoma (Nottingham strain): a classical tapeworm model for research in the genomic era. Parasites & Vectors, 3 (1) : 123 - 123. doi: 10.1186/1756-3305-3-123

Blasco-costa I, Balbuena JA, Raga JA, Kostadinova A, Olson PD (2010) Molecules and morphology reveal cryptic variation among digeneans infecting sympatric mullets in the Mediterranean. Parasitology, 137 (2) : 287 - 302. doi: 10.1017/S0031182009991375

Olson PD, Caira JN, Jensen K, Overstreet RM, Palm HW, Beveridge I (2010) Evolution of the trypanorhynch tapeworms: Parasite phylogeny supports independent lineages of sharks and rays. International Journal for Parasitology, 40 (2) : 223 - 242. doi: 10.1016/j.ijpara.2009.07.012

Blasco-costa I, Balbuena JA, Konstadinova A, Olson PD (2009) Interrelationships of the Haploporinae (Digenea: Haploporidae): a molecular test of the taxonomic framework based on morphology. Parasitology International, 58 (3) : 263 - 269. doi: 10.1016/j.parint.2009.03.006

Palm HW, Waeschenbach A, Olson PD, Littlewood DTJ (2009) Molecular phylogeny and evolution of the Trypanorhyncha Diesing, 1863 (Platyhelminthes: Cestoda). Molecular Phylogenetics and Evolution, 52 (2) : 351 - 367. doi: 10.1016/j.ympev.2009.01.019

Olson PD, Poddubnaya LG, Littlewood DTJ, Scholz T (2008) On the position of Archigetes and its bearing on the early evolution of the tapeworms. Journal of Parasitology, 94 (4) : 898 - 904. doi: 10.1645/GE-1456.1

Olson PD (2007) Hox genes and the parasitic flatworms: New opportunities, challenges and lessons from the free-living. Parasitology International, 57 (1) : 8 - 17. doi: 10.1016/j.parint.2007.09.007

Olson PD (2008) Invited Review: Hox genes and the parasitic flatworms: new opportunities, challenges and lessons from the free-living. Parasitology International, 57 : 8 - 17.

Marques JF, Santos MJ, Gibson DI, Cabral HN, Olson PD (2007) Cryptic species of Didymobothrium ruolphii (Cestoda: Spathebothriidae) from the sand sole, Solea lascaris, off the Portuguese coast, with an analysis of their molecules, morphology, ultratructure and phylogeny. Parasitology, 134 (7) : 1057 - 1072. doi: 10.1017/S0031182007002491

Poddubnaya LG, Gibson DI, Olon PD (2007) Ultrastructure of the ovary, ovicapt and oviduct of the spathebothriidean tapeworm Didymobothrium rudolphii (Monticelli, 1890). Acta Parasitologia, 52 (2) : 127 - 134. doi: 10.2478/s11686-007-0014-3

Huys R, Llewellyn-hughes J, Conroy-dalton S, Olson PD, Spinks JN, Johnston DA (2007) Extraordinary host switching in siphonostomatoid copepods and the demise of the Monstrilloida: Integrating molecular data, ontogeny and antennulary morphology. Molecular Phylogentics and Evolution, 43 (2) : 368 - 378. doi: 10.1016/j.ympev.2007.02.004

Aznar FJ, Agusti C, Littlewood DTJ, Raga JA, Olson PD (2007) Insight into the role of cetaceans in the life cycle of the tetraphyllideans (Platyhelminthes: Cestoda). International Journal of Parasitology, 37 (2) : 243 - 255. doi: 10.1016/j.ijpara.2006.10.010

Otranto D, Rehbein S, Weigl S, Cantacessi C, Parisi A, Lia RP, Olson PD (2007) Morphological and molecular differentiation between Dicrocoelium dendriticum (Rudolphi, 1819) and Dicrocoelium chinensis (Sudarikov and Ryjikov, 1951) Tand and Rang, 1978 (Platyhelminthes: Digenea). Acta Tropica, 104 : 91 - 98. doi: 10.1016/j.actatropica.2007.07.008

Poddubnaya LG, Gibson DI, Świderski Z, Olson PD (2006) Vitellocyte ultrastructure in the cestode Didymobothrium rudolphii (Monticelli, 1890): possible evidence for the recognition of divergent taxa within the Spathebothriidea. Acta Parasitologica, 51 (4) : 255 - 263. doi: 10.2478/s11686-006-0039-z

Huys R, Llewellyn-hughes J, Olson PD, Nagasawa K (2006) Small subunit rDNA and Bayesian inference reveal Pectenophilus ornatus (Copepoda incertae sedis) as highly transformed Mytilicolidae, and support assignment of Chrondracanthidae and Xarifiidae to Lichomolgoidea (Cyclopoida). Biological Journal of the Linnean Society, 87 (3) : 403 - 425. doi: 10.1111/j.1095-8312.2005.00579.x

Literak I, Tenora F, Letkova V, Goldova M, Torres J, Olson PD (2006) Mesocestoides litteratus (Batsch, 1786) (Cestoda: Cyclophyllidae: Mesocestoididae) from the red fox: morphological and 18S rDNA characterization of European isolates. Helminthologia, 43 : 191 - 195.

Marques JF, Santos MJ, Olson PD, Cabral HN, Gibson DI (2006) Morphology and genetics of a key species in relation to cestode evolution, Didymobothrium rudolphii (Monticelli, 1890) Nybelin, 1922. International Congress of Parasitology XI,

Plaisance L, Littlewood DTJ, Olson PD, Morand S (2005) Molecular phylogeny of gill monogeneans (Platyhelminthes, Monogenea: Dactylogyridae) and colonization of Indo-West Pacific butterfly fish hosts (Perciformes, Chaetodontidae). Zoologica Scripta, 34 (4) : 425 - 436. doi: 10.1111/j.1463-6409.2005.00191.x

Garin YKF, Galan-puchades MT, Moulignier A, Robert G, Heran F, Polivka M, Olson PD, Lorenzo F, Derouin F, Conn DB (2005) Case Report: Human brain abscess due to a tetra-acetabulate plerocercoid metacestsode (Cyclophillidea). American Journal of Tropical Medicine and Hygiene, 72 (5) : 513 - 517.

Agustí C, Aznar FJ, Olson PD, Littlewood DTJ, Kostadinova A, Raga JA (2005) Morphological and molecular characterization of tetraphyllidean merocercoids (Platyhelminthes: Cestoda) of striped dolphins (Stenella coeruleoalba) from the Western Mediterranean. Parasitology, 130 (4) : 461 - 474. doi: 10.1017/S0031182004006754

Agusti C, Aznar FJ, Olson PD, Littlewood DTJ, Kostadinova A, Raga JA (2005) Morphological and molecular characterization of tetraphylllidean merocercoids of striped dolphins from the western Mediterranean.. Parasitology, 130 : 159 - 167.

Olson PD, Tkach VV (2005) Advances and trends in the molecular systematics of the parasitic playhelminthes. Advances in Parasitology, 60 : 165 - 243. doi: 10.1016/S0065-308X(05)60003-6

Bray RA, Olson PD (2004) The plerocercus of Ditrachybothridium macrocephalum Rees, 1959 from two deep-sea elasmobranches, with molecular analysis of its position within the order of Diphyllidea and a checklist of the hosts of larval diphyllideans. Systematic Parasitology, 59 (3) : 159 - 167. doi: 10.1023/B:SYPA.0000048101.99985.dc

Literak I, Olson PD, Georgiev B, Pakulova M (2004) First record of metacestodes of Mesocestoides sp. in the common starling (Sturnis vulgaris) in Europe, with an 18S rDNA characterization of the isolate. Folia Parasitologica, 51 (1) : 45 - 49. doi: 10.14411/fp.2004.006

Tkach VV, Littlewood DTJ, Olson PD, Kinsella JM, Swiderski Z (2003) Molecular Phylogenetic analysis of the Microphalloidea Ward, 1901 (Trematoda: Digenea). Systematic Parasitology, 56 (1) : 1 - 15. doi: 10.1023/A:1025546001611

Olson PD, Cribb TH, Tkach VV, Bray RA, Littlewood DTJ (2003) Phylogeny and classification of the Digenea (Platyhelminthes: Trematoda). International Journal for Parasitology, 33 (7) : 733 - 755. doi: 10.1016/s0020-7519(03)00049-3

Olson PD, Yoder K, Fajaro LFLG, Marty AM, Van dePasS, Olivier C, Relman DA (2003) Lethal invasive cestodiasis in immunosuppressed patients. Journal of Infectious Diseases, 187 (12) : 1962 - 1966. doi: 10.1086/375357

Lockyer AE, Olson PD, Ostergaard P, Rollinson D, Johnston DA, Attwood SW, Southgate VR, Horak P, Snyder SD, Le TH, Agatsuma T, Mcmanus DP, Carmichael AC, Littlewood DTJ (2003) The phylogeny of the Schistosomatidae based on three genes with emphasis on the interrelationships of Schistosoma Weinland, 1858. Parasitology, 126 (3) : 203 - 224. doi: 10.1017/S0031182002002792

Lockyer AE, Olson PD, Littlewood DTJ (2003) Utility of complete large and small subunit rRNA genes in resolving the phylogeny of the Platyhelminthes: implications and a review of the cercomer theory. Biological Journal of the Linnean Society, 78 (2) : 155 - 171. doi: 10.1046/j.1095-8312.2003.00141.x

Cribb TH, Bray RA, Olson PD, Littlewood DT (2003) Life cycle evolution in the digenea: a new perspective from phylogeny.. Adv Parasitol, 54 : 197 - 254. doi: 10.1016/s0065-308x(03)54004-0

Reyda FB, Olson PD (2003) Cestodes of cestodes of Peruvian freshwater stingrays. Journal of Parasitology, 89 : 1018 - 1024.

Olson PD, Littlewood DT, Griffiths D, Kennedy CR, Arme C (2002) Evidence for the co-existence of separate strains or species of Ligula in Lough Neagh, Northern Ireland.. J Helminthol, 76 (2) : 171 - 174. doi: 10.1079/JOH2001101

Olson PD (2002) Phylogenetics of the Monogenea – evidence from a medley of molecules. International Journal for Parasitology, 32 (3) : 233 - 244. doi: 10.1016/S0020-7519(01)00328-9

Bray RA, Olson PD, Cribb TH, Littlewood DTJ (2002) Frangible fluke phylogenies: delineating digenean descent. The British Society for Parasitology Spring Meeting,

Brickle P, Olson PD, Littlewood D, Bishop A, Arkhipkin AI (2001) Parasites of Loligo gahi from waters off the Falkland Islands, with a phylogenetically based identification of their cestode larvae. CANADIAN JOURNAL OF ZOOLOGY-REVUE CANADIENNE DE ZOOLOGIE, 79 (12) : 2289 - 2296. doi: 10.1139/cjz-79-12-2289

Olson PD, Littlewood DT, Bray RA, Mariaux J (2001) Interrelationships and evolution of the tapeworms (Platyhelminthes: Cestoda).. Mol Phylogenet Evol, 19 (3) : 443 - 467. doi: 10.1006/mpev.2001.0930

Littlewood DTJ, Cribb TH, Olson PD, Bray RA (2001) Platyhelminth phylogenetics - a key to understanding parasitism?. BELGIAN JOURNAL OF ZOOLOGY, 131 : 35 - 46.

Littlewood DTJ, Olson PD, Telford MJ, Herniou EA, Riutort M (2001) Elongation Factor 1-Alpha Sequences Alone Do Not Assist in Resolving the Position of the Acoela Within the Metazoa. Molecular Biology and Evolution, 18 (3) : 437 - 442. doi: 10.1093/oxfordjournals.molbev.a003821

Olson PD, Caira JN (2001) Two new species of Litobothrium Dailey, 1969 (Cestoda: Litobothriidea) from thresher sharks in the Gulf of California, Mexico, with redescriptions of two species in the genus. Systematic Parasitology, 48 (3) : 159 - 177. doi: 10.1023/A:1006422419580

Littlewood DTJ, Olson PD (2001) Small subunit rDNA and the Platyhelminthes: Signal, noise, conflict and compromise, In: Interrelationship of the Platyhelminthes, Taylor & Francis : 262 - 278.

Scholz T, Shimazu T, Olson PD, Nagasawa K (2001) Caryophyllidean tapeworms (Platyhelminthes: Eucestoda) from freshwater fishes in Japan. Folia Parasitologica, 48 (4) : 275 - 288. doi: 10.14411/fp.2001.046

Mariaux J, Olson PD (-1) Cestode systematics in molecular era, In: Interrelationships of the Platyhelminthes, Littlewood DTJ, Bray RA (Eds). Taylor & Francis : 127 - 134.

Olson PD (2000) New Insights into Platyhelminth Systematics and Evolution. Parasitology Today, 16 (1) : 3 - 5. doi: 10.1016/S0169-4758(99)01555-0

Olson PD, Caira JN (1999) Evolution of the major lineages of tapeworms (Platyhelminthes: Cestoidea) inferred from 18S ribosomal DNA and elongation factor-1alpha.. J Parasitol, 85 (6) : 1134 - 1159. doi: 10.2307/3285679

Olson PD, Ruhnke TR, Sanney J, Hudson T (1999) Evidence for host-specific clades of tetraphyllidean tapeworms (Platyhelminthes: Eucestoda) revealed by analysis of 18S ssrDNA. International Journal for Parasitology, 29 (9) : 1465 - 1476. doi: 10.1016/S0020-7519(99)00106-X

Olson PD, Nickol BB (1996) Comparison of Leptorhynchoides thecatus (Acanthocephala) recruitment in green sunfish and largemouth bass populations. Journal of Parasitology, 82 : 702 - 706.

Santamaria-fries M, Fajardo L-GLF, Sogin ML, Olson PD, Relman DA (1996) Lethal infection by a previously unrecognized metazoan parasite. The Lancet, 347 : 1797 - 1801.

Olson PD, Nickol BB (1995) Effects of low temperature on the development of Leptorhynchoides thecatus (Acanthocephala) in Lepomis cyanellus (Centrarchidae). Journal of the Helminthological Society of Washington, 62 : 44 - 47.