Research output per year
Research output per year
- 1 - 50 out of 60 results
Search results
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2023
Environmental, geographical and time-related impacts on avian malaria infections in native and introduced populations of house sparrows (Passer domesticus), a globally invasive species
Ferraguti, M., Magallanes, S., Jiménez-Peñuela, J., Martínez-de la Puente, J., Garcia-Longoria, L., Figuerola, J., Muriel, J., Albayrak, T., Bensch, S., Bonneaud, C., Clarke, R. H., Czirják, G., Dimitrov, D., Espinoza, K., Ewen, J. G., Ishtiaq, F., Flores-Saavedra, W., Garamszegi, L. Z., Hellgren, O., Horakova, D., & 23 others, 2023, In: Global Ecology and Biogeography. 32, 5, p. 809-823 15 p.Research output: Contribution to journal › Article › peer-review
Open Access -
Immune gene expression in the mosquito vector Culex quinquefasciatus during an avian malaria infection
García-Longoria, L., Ahrén, D., Berthomieu, A., Kalbskopf, V., Rivero, A. & Hellgren, O., 2023, In: Molecular Ecology. 32, 4, p. 904-919 16 p.Research output: Contribution to journal › Article › peer-review
Open Access -
Seasonal variations of intensity of avian malaria infection in the Thousand Island Lake System, China
Han, Y., Hellgren, O., Wu, Q., Liu, J., Jin, T., Bensch, S. & Ding, P., 2023, In: Parasites and Vectors. 16, 218.Research output: Contribution to journal › Article › peer-review
Open Access -
2022
A comparative analysis of the dynamics of Plasmodium relictum (GRW4) development in the blood during single and co-infections
Aželytė, J., Platonova, E., Bensch, S., Hellgren, O. & Palinauskas, V., 2022, In: Acta Tropica. 226, 106247.Research output: Contribution to journal › Article › peer-review
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Genomic sequence capture of Plasmodium relictum in experimentally infected birds
Ellis, V. A., Kalbskopf, V., Ciloglu, A., Duc, M., Huang, X., Inci, A., Bensch, S., Hellgren, O. & Palinauskas, V., 2022, In: Parasites and Vectors. 15, 1, 267.Research output: Contribution to journal › Article › peer-review
Open Access -
2021
Global drivers of avian haemosporidian infections vary across zoogeographical regions
Fecchio, A., Clark, N. J., Bell, J. A., Skeen, H. R., Lutz, H. L., De La Torre, G. M., Vaughan, J. A., Tkach, V. V., Schunck, F., Ferreira, F. C., Braga, É. M., Lugarini, C., Wamiti, W., Dispoto, J. H., Galen, S. C., Kirchgatter, K., Sagario, M. C., Cueto, V. R., González-Acuña, D., Inumaru, M., & 21 others, 2021 Dec 1, In: Global Ecology and Biogeography. 30, 12, p. 2393-2406 14 p.Research output: Contribution to journal › Article › peer-review
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Low MSP-1 haplotype diversity in the West Palearctic population of the avian malaria parasite Plasmodium relictum
Hellgren, O., Kelbskopf, V., Ellis, V. A., Ciloglu, A., Duc, M., Huang, X., Lopes, R. J., Mata, V. A., Aghayan, S. A., Inci, A. & Drovetski, S. V., 2021 Dec, In: Malaria Journal. 20, 1, 265.Research output: Contribution to journal › Article › peer-review
Open Access -
Gene regulation of the avian malaria parasite Plasmodium relictum, during the different stages within the mosquito vector
Sekar, V., Rivero, A., Pigeault, R., Gandon, S., Drews, A., Ahren, D. & Hellgren, O., 2021 Jul 1, In: Genomics. 113, 4, p. 2327-2337 11 p.Research output: Contribution to journal › Article › peer-review
Open Access -
Shifts in Gene Expression Variability in the blood-stage of Plasmodium relictum
Kalbskopf, V., Ahrén, D., Valkiūnas, G., Palinauskas, V. & Hellgren, O., 2021, In: Gene. 792, 0, 145723.Research output: Contribution to journal › Article › peer-review
Open Access -
2020
Explaining prevalence, diversity and host specificity in a community of avian haemosporidian parasites
Ellis, V. A., Huang, X., Westerdahl, H., Jönsson, J., Hasselquist, D., Neto, J. M., Nilsson, J. Å., Nilsson, J., Hegemann, A., Hellgren, O. & Bensch, S., 2020 Sept, In: Oikos. 129, 9, p. 1314-1329 16 p.Research output: Contribution to journal › Article › peer-review
Open Access -
Differential gene expression of Plasmodium homocircumflexum (lineage pCOLL4) across two experimentally infected passerine bird species
Garcia-Longoria, L., Palinauskas, V., Ilgūnas, M., Valkiūnas, G. & Hellgren, O., 2020 Jul, In: Genomics. 112, 4, p. 2857-2865 9 p.Research output: Contribution to journal › Article › peer-review
Open Access -
Host transcriptional responses to high-and low-virulent avian malaria parasites
Videvall, E., Palinauskas, V., Valkiūnas, G. & Hellgren, O., 2020 Jun, In: American Naturalist. 195, 6, p. 1070–1084 15 p.Research output: Contribution to journal › Article › peer-review
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Early-life gut dysbiosis linked to juvenile mortality in ostriches
Videvall, E., Song, S. J., Bensch, H. M., Strandh, M., Engelbrecht, A., Serfontein, N., Hellgren, O., Olivier, A., Cloete, S., Knight, R. & Cornwallis, C. K., 2020, In: Microbiome. 8, 1, 147.Research output: Contribution to journal › Article › peer-review
Open Access -
2019
Major shifts in gut microbiota during development and its relationship to growth in ostriches
Videvall, E., Song, S. J., Bensch, H. M., Strandh, M., Engelbrecht, A., Serfontein, N., Hellgren, O., Olivier, A., Cloete, S., Knight, R. & Cornwallis, C. K., 2019, In: Molecular Ecology. 28, 10, p. 2653-2667Research output: Contribution to journal › Article › peer-review
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Within-Lineage Divergence of Avian Haemosporidians: A Case Study to Reveal the Origin of a Widespread Haemoproteus Parasite
Huang, X., Rapševičius, P., Chapa-Vargas, L., Hellgren, O. & Bensch, S., 2019, In: The Journal of Parasitology. 105, 3, p. 414-422 9 p.Research output: Contribution to journal › Article › peer-review
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2018
De novo synthesis of thiamine (vitamin B1) is the ancestral state in Plasmodium parasites – evidence from avian haemosporidians
Hellgren, O., Bensch, S. & Videvall, E., 2018, In: Parasitology. 145, 8, p. 1084-1089Research output: Contribution to journal › Article › peer-review
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The success of sequence capture in relation to phylogenetic distance from a reference genome: a case study of avian haemosporidian parasites
Huang, X., Hansson, R., Palinauskas, V., Valkiūnas, G., Hellgren, O. & Bensch, S., 2018, In: International Journal for Parasitology. 48, 12, p. 947-954Research output: Contribution to journal › Article › peer-review
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2017
Avian migration and the distribution of malaria parasites in New World passerine birds
Ricklefs, R. E., Medeiros, M., Ellis, V., Svensson-Coelho, M., Blake, J. G., Loiselle, B. A., Soares, L., Fecchio, A., Outlaw, D., Marra, P. P., Latta, S. C., Valkiūnas, G., Hellgren, O. & Bensch, S., 2017 May, In: Journal of Biogeography. 44, 5, p. 1113-1123Research output: Contribution to journal › Article › peer-review
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The transcriptome of the avian malaria parasite Plasmodium ashfordi displays host-specific gene expression
Videvall, E., Cornwallis, C., Ahrén, D., Palinauskas, V., Valkiunas, G. & Hellgren, O., 2017 Mar 7, In: Molecular Ecology.Research output: Contribution to journal › Article › peer-review
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2016
The evolution of innate immune genes: Purifying and balancing selection on β-Defensins in waterfowl
Chapman, J. R., Hellgren, O., Helin, A. S., Kraus, R. H. S., Cromie, R. L. & Waldenström, J., 2016 Dec 1, In: Molecular biology and evolution. 33, 12, p. 3075-3087 13 p.Research output: Contribution to journal › Article › peer-review
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Population genetic structure, differentiation, and diversity in Tetrix subulata pygmy grasshoppers: roles of population size and immigration
Tinnert, J., Hellgren, O., Lindberg, J., Koch-Schmidt, P. & Forsman, A., 2016 Nov 1, In: Ecology and Evolution. 6, 21, p. 7831-7846 16 p.Research output: Contribution to journal › Article › peer-review
Open Access -
Multiple cryptic species of sympatric generalists within the avian blood parasite Haemoproteus majoris
Nilsson, E., Taubert, H., Hellgren, O., Huang, X., Palinauskas, V., Markovets, M. Y., Valkiūnas, G. & Bensch, S., 2016 Sept 1, In: Journal of evolutionary biology. 29, 9, p. 1812-1826 15 p.Research output: Contribution to journal › Article › peer-review
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The genome of Haemoproteus tartakovskyi and its relationship to human malaria parasites
Bensch, S., Canbäck, B., DeBarry, J. D., Johansson, T., Hellgren, O., Kissinger, J. C., Palinauskas, V., Videvall, E. & Valkiūnas, G., 2016, In: Genome Biology and Evolution. 8, 5, p. 1361-73 13 p.Research output: Contribution to journal › Article › peer-review
Open Access -
2015
Allelic variation at innate immune genes (avian beta-defensins), within a natural population of great tits
Hellgren, O., 2015, In: Journal of Avian Biology. 46, 1, p. 113-118Research output: Contribution to journal › Article › peer-review
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Detecting transmission areas of malaria parasites in a migratory bird species.
Garcia-Longoria, L., Hellgren, O., Bensch, S., DE Lope, F. & Marzal, A., 2015, In: Parasitology. 142, 9, p. 1215-1220Research output: Contribution to journal › Article › peer-review
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Global phylogeography of the avian malaria pathogen Plasmodium relictum based on MSP1 allelic diversity
Hellgren, O., Atkinson, C. T., Bensch, S., Albayrak, T., Dimitrov, D., Ewen, J. G., Kim, K. S., Lima, M. R., Martin, L., Palinauskas, V., Ricklefs, R., Sehgal, R. N. M., Valkiunas, G., Tsuda, Y. & Marzal, A., 2015, In: Ecography. 38, 8, p. 842-850Research output: Contribution to journal › Article › peer-review
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The Avian Transcriptome Response to Malaria Infection.
Videvall, E., Cornwallis, C., Palinauskas, V., Valkiūnas, G. & Hellgren, O., 2015, In: Molecular biology and evolution. 32, 5, p. 1255-1267Research output: Contribution to journal › Article › peer-review
Open Access -
2014
Molecular identification of the chitinase genes in Plasmodium relictum
Garcia-Longoria, L., Hellgren, O. & Bensch, S., 2014, In: Malaria Journal. 13, 239.Research output: Contribution to journal › Article › peer-review
Open Access -
2013
Circannual variation in blood parasitism in a sub-Saharan migrant passerine bird, the garden warbler
Hellgren, O., Wood, M. J., Waldenström, J., Hasselquist, D., Ottosson, U., Stervander, M. & Bensch, S., 2013, In: Journal of evolutionary biology. 26, 5, p. 1047-1059Research output: Contribution to journal › Article › peer-review
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Identification and characterization of the merozoite surface protein 1 (msp1) gene in a host-generalist avian malaria parasite, Plasmodium relictum (lineages SGS1 and GRW4) with the use of blood transcriptome
Hellgren, O., Kutzer, M., Bensch, S., Valkiunas, G. & Palinauskas, V., 2013, In: Malaria Journal. 12, 381.Research output: Contribution to journal › Article › peer-review
Open Access -
The epidemiology underlying age‐related avian malaria infection in a long‐lived host: the mute swan Cygnus olor
Wood, M. J., Childs, D. Z., Davies, A. S., Hellgren, O., Cornwallis, C., Perrins, C. M. & Sheldon, B. C., 2013, In: Journal of Avian Biology. 44, 4, p. 347-358Research output: Contribution to journal › Article › peer-review
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The origin of Swedish and Norwegian populations of the Eurasian harvest mouse (Micromys minutus)
Råberg, L., Loman, J., Hellgren, O., van der Kooij, J., Isaksen, K. & Solheim, R., 2013, In: Acta Theriologica. 58, 1, p. 101-104Research output: Contribution to journal › Article › peer-review
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2012
Migratory behavior of birds affects their coevolutionary relationship with blood parasites
Jenkins, T., Thomas, G. H., Hellgren, O. & Owens, I. P. F., 2012, In: Evolution. 66, 3, p. 740-751Research output: Contribution to journal › Article › peer-review
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2011
Diversity, Loss, and Gain of Malaria Parasites in a Globally Invasive Bird.
Marzal, A., Ricklefs, R. E., Valkiūnas, G., Albayrak, T., Arriero, E., Bonneaud, C., Czirják, G. A., Ewen, J., Hellgren, O., Hořáková, D., Iezhova, T. A., Jensen, H., Križanauskienė, A., Robalinho Lima, M., de Lope, F., Magnussen, E., Martin, L. B., Møller, A. P., Palinauskas, V., Pap, P. L., & 7 others, 2011, In: PLoS ONE. 6, 7, e21905.Research output: Contribution to journal › Article › peer-review
Open Access -
Locus-specific protocol for nine different innate immune genes (antimicrobial peptides: beta-defensins) across passerine bird species reveals within-species coding variation and a case of trans-species polymorphisms
Hellgren, O. & Sheldon, B. C., 2011, In: Molecular Ecology Resources. 11, 4, p. 686-692Research output: Contribution to journal › Article › peer-review
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Low haemosporidian diversity and one key-host species in a bird malaria community on a mid-atlantic island (sao miguel, azores)
Hellgren, O., Krizanauskiene, A., Hasselquist, D. & Bensch, S., 2011, In: Journal of Wildlife Diseases. 47, 4, p. 849-859Research output: Contribution to journal › Article › peer-review
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The genetic structure of Borrelia afzelii varies with geographic but not ecological sampling scale.
Hellgren, O., Andersson, M. & Råberg, L., 2011, In: Journal of evolutionary biology. 24, p. 159-167Research output: Contribution to journal › Article › peer-review
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2010
In vitro tests of natural allelic variation of innate immune genes (avian β-defensins) reveal functional differences in microbial inhibition
Hellgren, O., Sheldon, B. C. & Buckling, A., 2010 Dec, In: Journal of evolutionary biology. 23, 12, p. 2726-30Research output: Contribution to journal › Article › peer-review
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Evolution of a cluster of innate immune genes (beta-defensins) along the ancestral lines of chicken and zebra finch
Hellgren, O. & Ekblom, R., 2010 Apr 1, In: Immunome Research. 6, 3, 15 p.Research output: Contribution to journal › Article › peer-review
Open Access -
Molecular phylogenetic and morphological analysis of haemosporidian parasites (Haemosporida) in a naturally infected European songbird, the blackcap Sylvia atricapilla, with description of Haemoproteus pallidulus sp. nov
Krizanauskiene, A., Pérez-Tris, J., Palinauskas, V., Hellgren, O., Bensch, S. & Valkiūnas, G., 2010, In: Parasitology. 137, 2, p. 217-227 11 p.Research output: Contribution to journal › Article › peer-review
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2009
Feather mites and internal parasites in small ground finches (geospiza fuliginosa, emberizidae) from the galapagos Islands (Equador)
Lindström, K. M., Dolnik, O., Yabsley, M., Hellgren, O., O'Connor, B., Pärn, H. & Foufopoulos, J., 2009 Feb, In: Journal of Parasitology. 95, 1, p. 39-45Research output: Contribution to journal › Article › peer-review
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A jack-of-all-trades and still a master of some: prevalence and host range in avian malaria and related blood parasites
Hellgren, O., Perez-Tris, J. & Bensch, S., 2009, In: Ecology. 90, 10, p. 2840-2849Research output: Contribution to journal › Article › peer-review
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MalAvi: A public database of malaria parasites and related haemosporidians in avian hosts based on mitochondrial cytochrome b lineages
Bensch, S., Hellgren, O. & PÉrez-Tris, J., 2009, In: Molecular Ecology Resources. 9, 5, p. 1353-1358 6 p.Research output: Contribution to journal › Article › peer-review
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Parallelism and historical contingency during rapid ecotype divergence in an isopod
Eroukhmanoff, F., Hargeby, A., Arnberg, N. N., Hellgren, O., Bensch, S. & Svensson, E. I., 2009, In: Journal of evolutionary biology. 22, 5, p. 1098-1110 13 p.Research output: Contribution to journal › Article › peer-review
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2008
A cautionary note on the use of nested-PCR for parasite screening - an example from avian blood parasites
Söllözi, E., Hellgren, O. & Hasselquist, D., 2008, In: The Journal of Parasitology. 94, 2, p. 562-564Research output: Contribution to journal › Article › peer-review
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Bird hosts, blood parasites and their vectors - associations uncovered by molecular analyses of blackfly blood meals.
Hellgren, O., Bensch, S. & Malmqvist, B., 2008, In: Molecular Ecology. 17, 6, p. 1605-1613Research output: Contribution to journal › Article › peer-review
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Population structure and migratory directions of Scandinavian bluethroats (Luscinia svecica) -a molecular, morphological and stable isotope analysis
Hellgren, O., Bensch, S., Hobson, K. & Lindström, Å., 2008, In: Ecography. 31, 1, p. 95-103Research output: Contribution to journal › Article › peer-review
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2007
Detecting shifts of transmission areas in avian blood parasites - a phylogenetic approach
Hellgren, O., Waldenström, J., Perez-Tris, J., Ösi, ES., Hasselquist, D., Krizanauskiene, A., Ottosson, U. & Bensch, S., 2007, In: Molecular Ecology. 16, 6, p. 1281-1290Research output: Contribution to journal › Article › peer-review
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Diversity and phylogeny of mitochondrial cytochrome b lineages from six morphological species of avian Haemoproteus
Hellgren, O., Krizanauskiene, A., Valkiunas, G. & Bensch, S., 2007, In: The Journal of Parasitology. 93, 4, p. 889-896Research output: Contribution to journal › Article › peer-review
Open Access -
European Griffon Vulture Gyps fulvus and Yankari National Park in Nigeria
Strandberg, R., Ottosson, U., Waldenström, J. & Hellgren, O., 2007, In: Malimbus. 29, 2, p. 122-123Research output: Contribution to journal › Article › peer-review