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Items: 23


Experimental manipulation of reproductive tactics in Seba's short-tailed bats: consequences on sperm quality and oxidative status.

Meniri M, Gohon F, Gning O, Glauser G, Vallat A, Fasel NJ, Helfenstein F.

Curr Zool. 2019 Dec;65(6):609-616. doi: 10.1093/cz/zoz011. Epub 2019 Mar 23.


Social dominance, but not parasite load, affects sperm quality and sperm redox status in house sparrows.

Losdat S, Rojas Mora A, Bellut C, Chargé R, Falchi V, Glauser G, Vallat A, Helfenstein F.

J Exp Biol. 2019 Sep 10;222(Pt 17). pii: jeb200675. doi: 10.1242/jeb.200675.


A sublethal dose of the neonicotinoid insecticide acetamiprid reduces sperm density in a songbird.

Humann-Guilleminot S, Tassin de Montaigu C, Sire J, Grünig S, Gning O, Glauser G, Vallat A, Helfenstein F.

Environ Res. 2019 Oct;177:108589. doi: 10.1016/j.envres.2019.108589. Epub 2019 Jul 16.


A large-scale survey of house sparrows feathers reveals ubiquitous presence of neonicotinoids in farmlands.

Humann-Guilleminot S, Clément S, Desprat J, Binkowski ŁJ, Glauser G, Helfenstein F.

Sci Total Environ. 2019 Apr 10;660:1091-1097. doi: 10.1016/j.scitotenv.2019.01.068. Epub 2019 Jan 8.


Is sperm morphology functionally related to sperm swimming ability? A case study in a wild passerine bird with male hierarchies.

Rojas Mora A, Meniri M, Ciprietti S, Helfenstein F.

BMC Evol Biol. 2018 Sep 19;18(1):142. doi: 10.1186/s12862-018-1260-8.


Effects of an early-life paraquat exposure on adult resistance to oxidative stress, plumage colour and sperm performance in a wild bird.

Losdat S, Blount JD, Marri V, Maronde L, Richner H, Helfenstein F.

J Anim Ecol. 2018 Jul;87(4):1137-1148. doi: 10.1111/1365-2656.12822. Epub 2018 Apr 6.


Sensitive and selective quantification of free and total malondialdehyde in plasma using UHPLC-HRMS.

Mendonça R, Gning O, Di Cesaré C, Lachat L, Bennett NC, Helfenstein F, Glauser G.

J Lipid Res. 2017 Sep;58(9):1924-1931. doi: 10.1194/jlr.D076661. Epub 2017 Jul 10.


Oxidative stress affects sperm performance and ejaculate redox status in subordinate house sparrows.

Mora AR, Firth A, Blareau S, Vallat A, Helfenstein F.

J Exp Biol. 2017 Jul 15;220(Pt 14):2577-2588. doi: 10.1242/jeb.154799. Epub 2017 May 15.


Antioxidant allocation modulates sperm quality across changing social environments.

Rojas Mora A, Meniri M, Gning O, Glauser G, Vallat A, Helfenstein F.

PLoS One. 2017 May 4;12(5):e0176385. doi: 10.1371/journal.pone.0176385. eCollection 2017.


Social dominance explains within-ejaculate variation in sperm design in a passerine bird.

Rojas Mora A, Meniri M, Ciprietti S, Helfenstein F.

BMC Evol Biol. 2017 Mar 4;17(1):66. doi: 10.1186/s12862-017-0914-2.


Modification of sperm quality after sexual abstinence in Seba's short-tailed bat, Carollia perspicillata.

Wesseling C, Fasel N, Richner H, Helfenstein F.

J Exp Biol. 2016 May 1;219(Pt 9):1363-8. doi: 10.1242/jeb.133843.


Maternal effects as drivers of sibling competition in a parent-offspring conflict context? An experimental test.

Merkling T, Perrot C, Helfenstein F, Ferdy JB, Gaillard L, Lefol E, Voisin E, Hatch SA, Danchin E, Blanchard P.

Ecol Evol. 2016 May 3;6(11):3699-3710. doi: 10.1002/ece3.1777. eCollection 2016 Jun.


Electroejaculation and semen buffer evaluation in the microbat Carollia perspicillata.

Fasel NJ, Helfenstein F, Buff S, Richner H.

Theriogenology. 2015 Mar 15;83(5):904-10. doi: 10.1016/j.theriogenology.2014.11.030. Epub 2014 Dec 2.


Resistance to oxidative stress shows low heritability and high common environmental variance in a wild bird.

Losdat S, Helfenstein F, Blount JD, Richner H.

J Evol Biol. 2014 Sep;27(9):1990-2000. doi: 10.1111/jeb.12454. Epub 2014 Jul 21.


Brood reduction via intra-clutch variation in testosterone--an experimental test in the great tit.

Podlas K, Helfenstein F, Richner H.

PLoS One. 2013;8(2):e56672. doi: 10.1371/journal.pone.0056672. Epub 2013 Feb 20.


Nestling erythrocyte resistance to oxidative stress predicts fledging success but not local recruitment in a wild bird.

Losdat S, Helfenstein F, Blount JD, Marri V, Maronde L, Richner H.

Biol Lett. 2013 Feb 23;9(1):20120888. doi: 10.1098/rsbl.2012.0888. Epub 2012 Oct 24.


Higher in vitro resistance to oxidative stress in extra-pair offspring.

Losdat S, Helfenstein F, Saladin V, Richner H.

J Evol Biol. 2011 Nov;24(11):2525-30. doi: 10.1111/j.1420-9101.2011.02374.x. Epub 2011 Sep 7.


Immune activation reduces sperm quality in the great tit.

Losdat S, Richner H, Blount JD, Helfenstein F.

PLoS One. 2011;6(7):e22221. doi: 10.1371/journal.pone.0022221. Epub 2011 Jul 12.


Sperm of colourful males are better protected against oxidative stress.

Helfenstein F, Losdat S, Møller AP, Blount JD, Richner H.

Ecol Lett. 2010 Feb;13(2):213-22. doi: 10.1111/j.1461-0248.2009.01419.x. Epub 2009 Jan 4.


Evidence that pairing with genetically similar mates is maladaptive in a monogamous bird.

Mulard H, Danchin E, Talbot SL, Ramey AM, Hatch SA, White JF, Helfenstein F, Wagner RH.

BMC Evol Biol. 2009 Jun 30;9:147. doi: 10.1186/1471-2148-9-147.


Multiple deleterious effects of experimentally aged sperm in a monogamous bird.

White J, Wagner RH, Helfenstein F, Hatch SA, Mulard H, Naves LC, Danchin E.

Proc Natl Acad Sci U S A. 2008 Sep 16;105(37):13947-52. doi: 10.1073/pnas.0803067105. Epub 2008 Sep 8.


Sex-related effects of maternal egg investment on offspring in relation to carotenoid availability in the great tit.

Berthouly A, Helfenstein F, Tanner M, Richner H.

J Anim Ecol. 2008 Jan;77(1):74-82. doi: 10.1111/j.1365-2656.2007.01309.x.


Female choice of young sperm in a genetically monogamous bird.

Wagner RH, Helfenstein F, Danchin E.

Proc Biol Sci. 2004 May 7;271 Suppl 4:S134-7.

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