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Immune function and blood parasite infections impact stopover ecology in passerine birds.

Hegemann A, Alcalde Abril P, Muheim R, Sjöberg S, Alerstam T, Nilsson JÅ, Hasselquist D.

Oecologia. 2018 Dec;188(4):1011-1024. doi: 10.1007/s00442-018-4291-3. Epub 2018 Nov 1.


A mimicked bacterial infection prolongs stopover duration in songbirds-but more pronounced in short- than long-distance migrants.

Hegemann A, Alcalde Abril P, Sjöberg S, Muheim R, Alerstam T, Nilsson JÅ, Hasselquist D.

J Anim Ecol. 2018 Nov;87(6):1698-1708. doi: 10.1111/1365-2656.12895. Epub 2018 Aug 28.


Evidence for sexual conflict over major histocompatibility complex diversity in a wild songbird.

Roved J, Hansson B, Tarka M, Hasselquist D, Westerdahl H.

Proc Biol Sci. 2018 Aug 1;285(1884). pii: 20180841. doi: 10.1098/rspb.2018.0841.


Contrasting results from GWAS and QTL mapping on wing length in great reed warblers.

Hansson B, Sigeman H, Stervander M, Tarka M, Ponnikas S, Strandh M, Westerdahl H, Hasselquist D.

Mol Ecol Resour. 2018 Jul;18(4):867-876. doi: 10.1111/1755-0998.12785. Epub 2018 Apr 30.


The evolution of immunity in relation to colonization and migration.

O'Connor EA, Cornwallis CK, Hasselquist D, Nilsson JÅ, Westerdahl H.

Nat Ecol Evol. 2018 May;2(5):841-849. doi: 10.1038/s41559-018-0509-3. Epub 2018 Apr 9.


Maternal immunization increases nestling energy expenditure, immune function, and fledging success in a passerine bird.

Burness G, Moher D, Ben-Ezra N, Kelly RJ, Hasselquist D, Chin EH.

Biol Open. 2018 Apr 4;7(4). pii: bio028803. doi: 10.1242/bio.028803.


No evidence that carotenoid pigments boost either immune or antioxidant defenses in a songbird.

Koch RE, Kavazis AN, Hasselquist D, Hood WR, Zhang Y, Toomey MB, Hill GE.

Nat Commun. 2018 Feb 5;9(1):491. doi: 10.1038/s41467-018-02974-x.


Cellular aging dynamics after acute malaria infection: A 12-month longitudinal study.

Asghar M, Yman V, Homann MV, Sondén K, Hammar U, Hasselquist D, Färnert A.

Aging Cell. 2018 Feb;17(1). doi: 10.1111/acel.12702. Epub 2017 Nov 16.


Sex differences in immune responses: Hormonal effects, antagonistic selection, and evolutionary consequences.

Roved J, Westerdahl H, Hasselquist D.

Horm Behav. 2017 Feb;88:95-105. doi: 10.1016/j.yhbeh.2016.11.017. Epub 2016 Dec 9. Review.


Parallel telomere shortening in multiple body tissues owing to malaria infection.

Asghar M, Palinauskas V, Zaghdoudi-Allan N, Valkiūnas G, Mukhin A, Platonova E, Färnert A, Bensch S, Hasselquist D.

Proc Biol Sci. 2016 Aug 17;283(1836). pii: 20161184. doi: 10.1098/rspb.2016.1184.


Gene expression in the brain of a migratory songbird during breeding and migration.

Boss J, Liedvogel M, Lundberg M, Olsson P, Reischke N, Naurin S, Åkesson S, Hasselquist D, Wright A, Grahn M, Bensch S.

Mov Ecol. 2016 Feb 15;4:4. doi: 10.1186/s40462-016-0069-6. eCollection 2016.


The evolution of highly variable immunity genes across a passerine bird radiation.

O'Connor EA, Strandh M, Hasselquist D, Nilsson JÅ, Westerdahl H.

Mol Ecol. 2016 Feb;25(4):977-89. doi: 10.1111/mec.13530. Epub 2016 Feb 9.


Body temperature changes during simulated bacterial infection in a songbird: fever at night and hypothermia during the day.

Sköld-Chiriac S, Nord A, Tobler M, Nilsson JÅ, Hasselquist D.

J Exp Biol. 2015 Sep;218(Pt 18):2961-9. doi: 10.1242/jeb.122150. Epub 2015 Jul 31.


Selection and evolutionary potential of spring arrival phenology in males and females of a migratory songbird.

Tarka M, Hansson B, Hasselquist D.

J Evol Biol. 2015 May;28(5):1024-38. doi: 10.1111/jeb.12638. Epub 2015 May 13.


Skin pentosidine and telomere length do not covary with age in a long-lived seabird.

Rattiste K, Klandorf H, Urvik J, Sepp T, Asghar M, Hasselquist D, Cooey C, Hõrak P.

Biogerontology. 2015 Aug;16(4):435-41. doi: 10.1007/s10522-015-9564-1. Epub 2015 Mar 1.


Maternal and genetic factors determine early life telomere length.

Asghar M, Bensch S, Tarka M, Hansson B, Hasselquist D.

Proc Biol Sci. 2015 Jan 22;282(1799):20142263.


Chronic infection. Hidden costs of infection: chronic malaria accelerates telomere degradation and senescence in wild birds.

Asghar M, Hasselquist D, Hansson B, Zehtindjiev P, Westerdahl H, Bensch S.

Science. 2015 Jan 23;347(6220):436-8. doi: 10.1126/science.1261121.


Does inbreeding affect gene expression in birds?

Hansson B, Naurin S, Hasselquist D.

Biol Lett. 2014 Sep;10(9). pii: 20140648. doi: 10.1098/rsbl.2014.0648.


Physiological and behavioral responses to an acute-phase response in zebra finches: immediate and short-term effects.

Sköld-Chiriac S, Nord A, Nilsson JÅ, Hasselquist D.

Physiol Biochem Zool. 2014 Mar-Apr;87(2):288-98. doi: 10.1086/674789. Epub 2014 Feb 11.


Assessing multivariate constraints to evolution across ten long-term avian studies.

Teplitsky C, Tarka M, Møller AP, Nakagawa S, Balbontín J, Burke TA, Doutrelant C, Gregoire A, Hansson B, Hasselquist D, Gustafsson L, de Lope F, Marzal A, Mills JA, Wheelwright NT, Yarrall JW, Charmantier A.

PLoS One. 2014 Mar 7;9(3):e90444. doi: 10.1371/journal.pone.0090444. eCollection 2014.


Intralocus sexual conflict over wing length in a wild migratory bird.

Tarka M, Akesson M, Hasselquist D, Hansson B.

Am Nat. 2014 Jan;183(1):62-73. doi: 10.1086/674072. Epub 2013 Nov 12.


Annual cycle and migration strategies of a trans-Saharan migratory songbird: a geolocator study in the great reed warbler.

Lemke HW, Tarka M, Klaassen RH, Åkesson M, Bensch S, Hasselquist D, Hansson B.

PLoS One. 2013 Oct 18;8(10):e79209. doi: 10.1371/journal.pone.0079209. eCollection 2013.


Individual variation in influenza A virus infection histories and long-term immune responses in Mallards.

Tolf C, Latorre-Margalef N, Wille M, Bengtsson D, Gunnarsson G, Grosbois V, Hasselquist D, Olsen B, Elmberg J, Waldenström J.

PLoS One. 2013 Apr 23;8(4):e61201. doi: 10.1371/journal.pone.0061201. Print 2013.


Effects of prenatal testosterone exposure on antioxidant status and bill color in adult zebra finches.

Tobler M, Sandell MI, Chiriac S, Hasselquist D.

Physiol Biochem Zool. 2013 May-Jun;86(3):333-45. doi: 10.1086/670194. Epub 2013 Apr 15.


Circannual variation in blood parasitism in a sub-Saharan migrant passerine bird, the garden warbler.

Hellgren O, Wood MJ, Waldenström J, Hasselquist D, Ottosson U, Stervander M, Bensch S.

J Evol Biol. 2013 May;26(5):1047-59. doi: 10.1111/jeb.12129.


Marked host specificity and lack of phylogeographic population structure of Campylobacter jejuni in wild birds.

Griekspoor P, Colles FM, McCarthy ND, Hansbro PM, Ashhurst-Smith C, Olsen B, Hasselquist D, Maiden MC, Waldenström J.

Mol Ecol. 2013 Mar;22(5):1463-72. doi: 10.1111/mec.12144. Epub 2013 Jan 29.


Sex-biased gene expression on the avian Z chromosome: highly expressed genes show higher male-biased expression.

Naurin S, Hasselquist D, Bensch S, Hansson B.

PLoS One. 2012;7(10):e46854. doi: 10.1371/journal.pone.0046854. Epub 2012 Oct 3.


Patterns of molecular evolution of an avian neo-sex chromosome.

Pala I, Hasselquist D, Bensch S, Hansson B.

Mol Biol Evol. 2012 Dec;29(12):3741-54. doi: 10.1093/molbev/mss177. Epub 2012 Jul 23.


Primary peak and chronic malaria infection levels are correlated in experimentally infected great reed warblers.

Asghar M, Westerdahl H, Zehtindjiev P, Ilieva M, Hasselquist D, Bensch S.

Parasitology. 2012 Sep;139(10):1246-52. doi: 10.1017/S0031182012000510. Epub 2012 May 1.


Low haemosporidian diversity and one key-host species in a bird malaria community on a mid-Atlantic island (São Miguel, Azores).

Hellgren O, Križanauskienė A, Hasselquist D, Bensch S.

J Wildl Dis. 2011 Oct;47(4):849-59.


Evidence of a neo-sex chromosome in birds.

Pala I, Naurin S, Stervander M, Hasselquist D, Bensch S, Hansson B.

Heredity (Edinb). 2012 Mar;108(3):264-72. doi: 10.1038/hdy.2011.70. Epub 2011 Sep 7.


Quantitative disease resistance: to better understand parasite-mediated selection on major histocompatibility complex.

Westerdahl H, Asghar M, Hasselquist D, Bensch S.

Proc Biol Sci. 2012 Feb 7;279(1728):577-84. doi: 10.1098/rspb.2011.0917. Epub 2011 Jul 6.


Determinants of distribution and prevalence of avian malaria in blue tit populations across Europe: separating host and parasite effects.

Szöllosi E, Cichoń M, Eens M, Hasselquist D, Kempenaers B, Merino S, Nilsson JÅ, Rosivall B, Rytkönen S, Török J, Wood MJ, Garamszegi LZ.

J Evol Biol. 2011 Sep;24(9):2014-24. doi: 10.1111/j.1420-9101.2011.02339.x. Epub 2011 Jul 4.


Consequences of immune system aging in nature: a study of immunosenescence costs in free-living Tree Swallows.

Palacios MG, Winkler DW, Klasing KC, Hasselquist D, Vleck CM.

Ecology. 2011 Apr;92(4):952-66.


The sex-biased brain: sexual dimorphism in gene expression in two species of songbirds.

Naurin S, Hansson B, Hasselquist D, Kim YH, Bensch S.

BMC Genomics. 2011 Jan 14;12:37. doi: 10.1186/1471-2164-12-37.


Sexual dimorphism in immune function changes during the annual cycle in house sparrows.

Pap PL, Czirják GA, Vágási CI, Barta Z, Hasselquist D.

Naturwissenschaften. 2010 Oct;97(10):891-901. doi: 10.1007/s00114-010-0706-7. Epub 2010 Aug 13.


Multivariate phenotypes and the potential for alternative phenotypic optima in wall lizard (Podarcis muralis) ventral colour morphs.

Calsbeek B, Hasselquist D, Clobert J.

J Evol Biol. 2010 Jun 1;23(6):1138-47. doi: 10.1111/j.1420-9101.2010.01978.x. Epub 2010 Apr 6.


A strong quantitative trait locus for wing length on chromosome 2 in a wild population of great reed warblers.

Tarka M, Akesson M, Beraldi D, Hernández-Sánchez J, Hasselquist D, Bensch S, Hansson B.

Proc Biol Sci. 2010 Aug 7;277(1692):2361-9. doi: 10.1098/rspb.2010.0033. Epub 2010 Mar 24.


Campylobacter jejuni colonization in wild birds: results from an infection experiment.

Waldenström J, Axelsson-Olsson D, Olsen B, Hasselquist D, Griekspoor P, Jansson L, Teneberg S, Svensson L, Ellström P.

PLoS One. 2010 Feb 5;5(2):e9082. doi: 10.1371/journal.pone.0009082.


Why does dosage compensation differ between XY and ZW taxa?

Naurin S, Hansson B, Bensch S, Hasselquist D.

Trends Genet. 2010 Jan;26(1):15-20. doi: 10.1016/j.tig.2009.11.006. Epub 2009 Dec 4.


Are birds stressed during long-term flights? A wind-tunnel study on circulating corticosterone in the red knot.

Jenni-Eiermann S, Hasselquist D, Lindström A, Koolhaas A, Piersma T.

Gen Comp Endocrinol. 2009 Nov-Dec;164(2-3):101-6. doi: 10.1016/j.ygcen.2009.05.014. Epub 2009 May 27.


Yolk androgens and the development of avian immunity: an experiment in jackdaws (Corvus monedula).

Sandell MI, Tobler M, Hasselquist D.

J Exp Biol. 2009 Mar;212(Pt 6):815-22. doi: 10.1242/jeb.022111.


Maternal transfer of antibodies in vertebrates: trans-generational effects on offspring immunity.

Hasselquist D, Nilsson JA.

Philos Trans R Soc Lond B Biol Sci. 2009 Jan 12;364(1513):51-60. doi: 10.1098/rstb.2008.0137. Review.


Isotope signatures in winter moulted feathers predict malaria prevalence in a breeding avian host.

Yohannes E, Hansson B, Lee RW, Waldenström J, Westerdahl H, Akesson M, Hasselquist D, Bensch S.

Oecologia. 2008 Nov;158(2):299-306. doi: 10.1007/s00442-008-1138-3. Epub 2008 Sep 23.


Postglacial colonisation patterns and the role of isolation and expansion in driving diversification in a passerine bird.

Hansson B, Hasselquist D, Tarka M, Zehtindjiev P, Bensch S.

PLoS One. 2008 Jul 30;3(7):e2794. doi: 10.1371/journal.pone.0002794.


A cautionary note on the use of nested PCR for parasite screening--an example from avian blood parasites.

Szöllsi E, Hellgren O, Hasselquist D.

J Parasitol. 2008 Apr;94(2):562-4. doi: 10.1645/GE-1286.1.


A label of health: a previous immune challenge is reflected in the expression of a female plumage trait.

Hanssen SA, Hasselquist D, Folstad I, Erikstad KE.

Biol Lett. 2008 Aug 23;4(4):379-81. doi: 10.1098/rsbl.2008.0131.


The Songbird Neurogenomics (SoNG) Initiative: community-based tools and strategies for study of brain gene function and evolution.

Replogle K, Arnold AP, Ball GF, Band M, Bensch S, Brenowitz EA, Dong S, Drnevich J, Ferris M, George JM, Gong G, Hasselquist D, Hernandez AG, Kim R, Lewin HA, Liu L, Lovell PV, Mello CV, Naurin S, Rodriguez-Zas S, Thimmapuram J, Wade J, Clayton DF.

BMC Genomics. 2008 Mar 18;9:131. doi: 10.1186/1471-2164-9-131.


Estimating heritabilities and genetic correlations: comparing the 'animal model' with parent-offspring regression using data from a natural population.

Akesson M, Bensch S, Hasselquist D, Tarka M, Hansson B.

PLoS One. 2008 Mar 5;3(3):e1739. doi: 10.1371/journal.pone.0001739.


TECHNICAL ADVANCES: A microarray for large-scale genomic and transcriptional analyses of the zebra finch (Taeniopygia guttata) and other passerines.

Naurin S, Bensch S, Hansson B, Johansson T, Clayton DF, Albrekt AS, VON Schantz T, Hasselquist D.

Mol Ecol Resour. 2008 Mar;8(2):275-81. doi: 10.1111/j.1471-8286.2007.01979.x.


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