Research Topics
| George O PoinarSummaryAffiliation: Oregon State University Country: USA Publications
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Detail Information
Publications
Evidence of intestinal parasites of dinosaursG Poinar
Department of Zoology, Oregon State University, Corvallis, OR 97331, USA
Parasitology 133:245-9. 2006..These fossil parasite stages are described and their possible effect on dinosaurs discussed. These findings represent the earliest fossil records of protozoan and helminth parasites of terrestrial vertebrates...- Evidence of mycoparasitism and hypermycoparasitism in Early Cretaceous amberGeorge O Poinar
Department of Zoology, Oregon State University, Corvallis, OR 97331, USA
Mycol Res 111:503-6. 2007..sp. nov., which in turn is parasitized by the hyperparasite, Entropezites patricii gen. sp. nov. This discovery shows that sophisticated patterns of fungal parasitism were well developed some 100 Myrago... - One hundred million years of chemical warfare by insectsG O Poinar
Department of Zoology, Oregon State University, Corvallis, OR 97331, USA
J Chem Ecol 33:1663-9. 2007..This is the earliest fossil record of a putative chemical defense response and suggests that chemical defense mechanisms in beetles have been in existence for at least 100 Ma... 
Parasitylenchus bifurcatus n. sp. (Tylenchida: Allantonematidae) parasitizing Harmonia axyridis (Coleoptera: Coccinellidae)George O Poinar
Department of Zoology, Oregon State University, Corvallis, OR, 97331, USA
Parasit Vectors 5:218. 2012..abstract:..
Palaeontology: the 165-million-year itchGeorge O Poinar
Department of Zoology, Oregon State University, Corvallis, OR 97331, USA
Curr Biol 22:R278-80. 2012..Possibly the oldest flea-like animals known, they provide a challenge to the functional morphologist to infer which animals they may have targeted...- A fungal-like organism associated with a wasp (Hymenoptera: Pteromalidae) in Dominican amberGeorge Poinar
Department of Zoology, Oregon State University, Corvallis, OR 97331 2902, USA
J Invertebr Pathol 110:132-4. 2012..The fossil, which is characterized by its small size, somatic configuration, pteromalid host and presence in Dominican amber, cannot be placed with assurance in any extant fungal group at this time... - Halophilanema prolata n. gen., n. sp. (Nematoda: Allantonematidae), a parasite of the intertidal bug, Saldula laticollis (Reuter)(Hemiptera: Saldidae) on the Oregon coastGeorge O Poinar
Department of Zoology, Oregon State University, Corvallis, OR 97331, USA
Parasit Vectors 5:24. 2012..This shore bug is adapted to an intertidal environment and can survive short periods of submergence during high tides. The present study describes the nematode parasite and discusses aspects of its development, ecology and evolution... - Mermithids (Nematoda: Mermithidae) of biting midges (Diptera: Ceratopogonidae): Heleidomermis cataloniensis n. sp. from Culicoides circumscriptus Kieffer in Spain and a species of Cretacimermis Poinar, 2001 from a ceratopogonid in Burmese amberGeorge Poinar
Department of Zoology, Oregon State University, Corvallis, OR 97331, USA
Syst Parasitol 69:13-21. 2008.... - Allomermis solenopsi n. sp. (Nematoda: Mermithidae) parasitising the fire ant Solenopsis invicta Buren (Hymenoptera: Formicidae) in ArgentinaGeorge O Poinar
Department of Zoology, Oregon State University, Corvallis, OR 97331, USA
Syst Parasitol 68:115-28. 2007..The possible life-cycle of the parasite is discussed, with the aim of using A. solenopsi as a biological control agent for fire ants in the United States... - Early Cretaceous trypanosomatids associated with fossil sand fly larvae in Burmese amberGeorge Poinar Jr
Department of Zoology, Oregon State University, Corvallis, OR, 97331, USA
Mem Inst Oswaldo Cruz 102:635-7. 2007..At some point in time, specific genera were introduced into vertebrates, thus establishing a dixenous life cycle... - Myrmeconema neotropicum n. g., n. sp., a new tetradonematid nematode parasitising South American populations of Cephalotes atratus (Hymenoptera: Formicidae), with the discovery of an apparent parasite-induced host morphGeorge Poinar
Department of Zoology, Oregon State University, Corvallis, OR, 97331, USA
Syst Parasitol 69:145-53. 2008..As the female nematodes mature inside the worker ants, the host gasters change colour from black to red... - Lutzomyia adiketis sp. n. (Diptera: Phlebotomidae), a vector of Paleoleishmania neotropicum sp. n. (Kinetoplastida: Trypanosomatidae) in Dominican amberGeorge Poinar
Department of Zoology, Oregon State University, Corvallis, Oregon, 97331, USA
Parasit Vectors 1:22. 2008..abstract:.. - Leptoconops nosopheris sp. n. (Diptera: Ceratopogonidae) and Paleotrypanosoma burmanicus gen. n., sp. n. (Kinetoplastida: Trypanosomatidae), a biting midge--trypanosome vector association from the Early CretaceousGeorge Poinar Jr
Department of Zoology, Oregon State University, Corvallis, OR 97331, USA
Mem Inst Oswaldo Cruz 103:468-71. 2008..These trypanosomes are described as Paleotrypanosoma burmanicus gen. n., sp. n., which represents the first fossil record of a Trypanosoma generic lineage... - Description of an early Cretaceous termite (Isoptera: Kalotermitidae) and its associated intestinal protozoa, with comments on their co-evolutionGeorge O Poinar
Department of Zoology, Oregon State University, Corvallis, Oregon, 97331, USA
Parasit Vectors 2:12. 2009..abstract:.. - Halomonhystera parasitica n. sp. (Nematoda: Monhysteridae), a parasite of Talorchestia brito (Crustacea: Talitridae) in PortugalGeorge Poinar
Department of Zoology, Oregon State University, Corvallis, OR 97331, USA
Syst Parasitol 75:53-8. 2010..This is the first representative of the family Monhysteridae parasitic in the body-cavity of crustaceans. Approximately 48% of the amphipods examined contained various stages of H. parasitica... - Vetufebrus ovatus n. gen., n. sp. (Haemospororida: Plasmodiidae) vectored by a streblid bat fly (Diptera: Streblidae) in Dominican amberGeorge O Poinar
Department of Zoology, Oregon State University, Corvallis, OR 97331, USA
Parasit Vectors 4:229. 2011..Members of the Nycteribiidae transmit bat malaria globally however extant streblids have never been implemented as vectors of bat malaria. The present study shows that during the Tertiary, streblids also were vectors of bat malaria... - The first fossil streblid bat fly, Enischnomyia stegosoma n. g., n. sp. (Diptera: Hippoboscoidea: Streblidae)George Poinar
Department of Zoology, Oregon State University, Corvallis, OR 97331, USA
Syst Parasitol 81:79-86. 2012..The possession of wings separates E. stegosoma from the species of Phalconomus, and the wing outline and venation, as well as the structure of the antennae and palps, distinguish it from species of Nycterophilia... - Nematode (Nematoda: Mermithidae) and hairworm (Nematomorpha: Chordodidae) parasites in Early Cretaceous amberGeorge Poinar
Department of Zoology, Oregon State University, Corvallis, OR 97331, USA
J Invertebr Pathol 93:36-41. 2006..A list of previously described fossil mermithids is included... - Recent and fossil nematode parasites (Nematoda: Mermithidae) of neotropical antsGeorge Poinar
Department of Zoology, Oregon State University, Corvallis, OR 97331, USA
J Invertebr Pathol 91:19-26. 2006.... - Paleohaemoproteus burmacis gen. n., sp. n. (Haemospororida: Plasmodiidae) from an Early Cretaceous biting midge (Diptera: Ceratopogonidae)G Poinar
Department of Zoology, Oregon State University, Corvallis, OR 97331, USA
Parasitology 131:79-84. 2005..Characters of the biting midge suggest that the host was a large, cold-blooded vertebrate. This is the earliest record of a malaria parasite and first indication that Early Cretaceous reptiles were infected with haemosporidial parasites... - Behaviour and development of Elasmosoma sp. (Neoneurinae: Braconidae: Hymenoptera), an endoparasite of Formica ants (Formicidae: Hymenoptera)G Poinar
Department of Zoology, Oregon State University, Corvallis, OR 97331, USA
Parasitology 128:521-31. 2004..Observations on the percentage parasitism and altered behaviour of parasitized ants are presented. The association between neoneurine wasps and ants is a well-balanced system that has been in existence for at least 40 million years... - Triatoma dominicana sp. n. (Hemiptera: Reduviidae: Triatominae), and Trypanosoma antiquus sp. n. (Stercoraria: Trypanosomatidae), the first fossil evidence of a triatomine-trypanosomatid vector associationGeorge Poinar
Department of Zoology, Oregon State University, Corvallis, Oregon 97331, USA
Vector Borne Zoonotic Dis 5:72-81. 2005..Based on these findings, it is possible that bats were the original vertebrate hosts of T. cruzi-like trypanosomes... - Evidence of vector-borne disease of Early Cretaceous reptilesGeorge Poinar
Department of Zoology, Oregon State University, Corvallis, Oregon 97331, USA
Vector Borne Zoonotic Dis 4:281-4. 2004..The significance of this find is discussed, especially regarding the high possibility that Cretaceous dinosaurs were infected by trypanosomatids... - Metaparasitylenchus hypothenemi n. sp. (Nematoda: Allantonematidae), a parasite of the coffee berry borer, Hypothenemus hampei (Curculionidae: Scolytinae)George Poinar
Department of Zoology, Oregon State University, Corvallis, Oregon 97331, USA
J Parasitol 90:1106-10. 2004..Because the coffee berry borer is the most important pest of coffee throughout the world and this parasite partially or completely sterilizes female beetles, it is worthy of further investigation as a potential biological control agent... - Paleoleishmania proterus n. gen., n. sp., (Trypanosomatidae: Kinetoplastida) from Cretaceous Burmese amberGeorge Poinar
Department of Zoology, Oregon State University, Corvallis, Oregon 97331, USA
Protist 155:305-10. 2004..Paleoleishmania proterus is the first fossil kinetoplastid and provides a minimum age for the digenetic Trypanosomatidae. Its discovery indicates that vector-borne pathogens had been established by the Early Cretaceous... - The oldest fossil evidence of animal parasitism by fungi supports a Cretaceous diversification of fungal-arthropod symbiosesGi Ho Sung
Department of Botany and Plant Pathology, Oregon State University, 2082 Cordley Hall, Corvallis, OR 97331 2902, USA
Mol Phylogenet Evol 49:495-502. 2008.... - New fossil Stylops (Strepsiptera: Stylopidae) from Dominican amberMarcos Kogan
Integrated Plant Protection Center, Dept of Horticulture, Oregon State Univ, Corvallis, Oregon 97331, USA
Neotrop Entomol 39:227-34. 2010..Existence of a fossil andrenid, Protandrena eickworti Rozen Jr, of the same Dominican amber, offers evidence of a potential host for this new species of Stylops... - Plasmodium dominicana n. sp. (Plasmodiidae: Haemospororida) from Tertiary Dominican amberGeorge Poinar
Department of Zoology, Oregon State University, Corvallis, Oregon 97331, USA
Syst Parasitol 61:47-52. 2005..It also supports earlier theories that some species of primate malaria could have evolved in the Americas... - A non-gilled hymenomycete in Cretaceous amberGeorge O Poinar
Department of Entomology, Oregon State University, Corvallis, OR 97331, USA
Mycol Res 107:763-8. 2003..This is the first fossil record of the Aphyllophorales and establishes certain basic morphological and ecological characters for the group... - Thaumamermis zealandica n sp (Mermithidae: Nematoda) parasitising the intertidal marine amphipod Talorchestia quoyana (Talitridae: Amphipoda) in New Zealand, with a summary of mermithids infecting amphipodsGeorge Poinar
Department of Entomology, Oregon State University, Corvallis, OR 97331, USA
Syst Parasitol 53:227-33. 2002..This is the first known marine host of a member of the family Mermithidae. Published records of mermithid nematodes from amphipods are presented... - Elaeolenchus parthenonema n. g., n. sp. (Nematoda: Sphaerularioidea: Anandranematidae n. fam.) parasitic in the palm-pollinating weevil Elaeidobius kamerunicus Faust, with a phylogenetic synopsis of the Sphaerularioidea Lubbock, 1861George O Poinar
Department of Entomology, Oregon State University, Corvallis, OR 97331, USA
Syst Parasitol 52:219-25. 2002..This family is considered to have the most primitive type of development in the superfamily... - Fossil evidence of insect pathogensGeorge Poinar
Department of Zoology, Oregon State University, Corvallis, OR 97331, USA
J Invertebr Pathol 89:243-50. 2005..The flagellates in the Early Cretaceous biting midge represent the first fossil record of monogenetic trypanosomatid infections of arthropods... - Coelomycetes in Dominican and Mexican amberGeorge Poinar
Department of Entomology, Oregon State University, Corvallis, Oregon 97331, USA
Mycol Res 107:117-22. 2003..Leptostromites ellipticus sp. nov. occurs on a dicot leaf in Dominican amber, and Leptothyrites dominicanus sp. nov. on a monocot (grass?) leaf in Dominican amber... - A new genus of hard ticks in Cretaceous Burmese amber (Acari: Ixodida: Ixodidae)George Poinar
Department of Entomology, Oregon State University, Corvallis, OR 97331, USA
Syst Parasitol 54:199-205. 2003.... - Formicitylenchus oregonensis n. g., n. sp. (Allantonematidae: Nematoda), the first tylenchid parasite of ants, with a review of nematodes described from antsGeorge Poinar
Department of Zoology, Oregon State University, Corvallis, OR 97331, USA
Syst Parasitol 56:69-76. 2003..It is suggested that this case of tylenchid parasitism in ants is an example of environmental host selection. A review of the described nematode parasites of ants is presented... - Amber: the organic gemstoneJoseph B Lambert
Department of Chemistry, Northwestern University, 2145 Sheridan Road, Evanston, Illinois 60208, USA
Acc Chem Res 35:628-36. 2002..Based on spectral distinctions, fossil resin found in an archaeological context sometimes can be assigned to a specific geographical origin on the basis of its (13)C NMR spectrum... - A new species of Phyllopsora (Lecanorales, lichen-forming Ascomycota) from Dominican amber, with remarks on the fossil history of lichensJouko Rikkinen
Department of Biological and Environmental Sciences, PO Box 65, University of Helsinki, FIN 00014 Helsinki, Finland
J Exp Bot 59:1007-11. 2008..The mycobiont hyphae formed apical and intercalary appressoria by pressing closely against the photobiont cells. This indicates that a conserved maintenance of structure is also seen in the fine details of the fungal-algal interface... - First record of a Mermithidae (Nematoda) from the meloid beetle Meloe violaceus Marsham, 1802 (Coleoptera: Meloidae)Johannes Lückmann
Institute of Ecology, University of Luneburg, Scharnhorststrasse 1, 21332 Lüneburg, Germany
Parasitol Res 90:82-3. 2003..A new record of nematode parasitism of meloid beetles is reported and all earlier records are summarised. Rates of parasitism could be influenced by the toxic compound cantharidin that these beetles possess...