Jo Skeie Hermansen

Hermansen JS et al. (2014) Hybrid speciation through sorting of parental incompatibilities in Italian sparrows. Molecular Ecology, 23: 5831-5842.

This paper presents the first demonstration of hybrid speciation through sorting of parental genic incompatibilities and was highlighted at The Molecular Ecologist.

Trier CN*, Hermansen JS*, Sætre G-P & Bailey RI (2014) Evidence for mito-nuclear and sex-linked reproductive barriers between the Italian sparrow and its parent species. PLoS Genetics, 10: e1004075. *Shared first authors.

This paper presents the first demonstration of a role of sex-linked and mito-nuclear incompatibilities in separating a hybrid species from its parent taxa. It was highlighted in Science under the “Editors’ Choice”-section, and awarded the Paper of the Year Award at the Department of Biosciences, University of Oslo.

Abbott, R, ..., Hermansen, JS et al. (2013) Hybridization and Speciation. Journal of Evolutionary Biology, 26: 229-246.

Currently the leading review paper on the role of hybridization in diversification. As of September/October 2015, this Web of Science Highly Cited Paper received enough citations to place it in the top 1% of the academic field of Plant & Animal Science based on a highly cited threshold for the field and publication year.

Hermansen JS, Sæther SA, Elgvin TO, Borge T, Hjelle E & Sætre G-P (2011) Hybrid speciation in sparrows I: phenotypic intermediacy, genetic admixture and barriers to gene flow. Molecular Ecology, 20: 3812-3822.

This paper presents the first demonstration of hybrid speciation in birds and was accompanied by a News & Views report, highlighted in Science under the “Editors’ Choice”-section, popularized by BBC, NPR and NRK among others. In the context of received attention, this paper has done particularly well and is among the top 5% of all articles ever tracked by Altmetric (www.altmetric.com).

Elgvin TO, Hermansen JS, Fijarczyk A, Bonnet T, Borge T, Sæther SA, Voje, KL & Sætre G-P (2011) Hybrid speciation in sparrows II: a role for sex chromosomes? Molecular Ecology, 20: 3823-3837.

The paper presents the first evidence of a role for sex chromosomes in hybrid speciation and was accompanied by a News & Views report and highlighted in Science under the “Editors’ Choice”-section.

• Runemark, Anna; Trier, Cassandra Nicole; Eroukhmanoff, Fabrice; Hermansen, Jo Skeie; Matschiner, Michael; Ravinet, Mark; Elgvin, Tore Oldeide & Sætre, Glenn-Peter (2018). Variation and constraints in hybrid genome formation. Nature Ecology & Evolution.  ISSN 2397-334X.  2(3), s 549- 556 . doi: 10.1038/s41559-017-0437-7
• Sætre, Glenn-Peter; Cuevas Pulido, Angelica Maria; Hermansen, Jo Skeie; Elgvin, Tore Oldeide; Fernández, Laura Piñeiro; Sæther, Stein Are; Sætre, Camilla Lo Cascio & Eroukhmanoff, Fabrice (2017). Rapid polygenic response to secondary contact in a hybrid species. Proceedings of the Royal Society of London. Biological Sciences.  ISSN 0962-8452.  284(1853) . doi: 10.1098/rspb.2017.0365 Show summary

  Secondary contact between closely related species can have genetic consequences. Competition for essential resources may lead to divergence in heritable traits that reduces interspecific competition leading to increased rate of genetic divergence. Conversely, hybridization and backcrossing can lead to genetic convergence. Here, we study a population of a hybrid species, the Italian sparrow (Passer italiae), before and after it came into secondary contact with one of its parent species, the Spanish sparrow (P. hispaniolensis), in 2013. We demonstrate strong consequences of interspecific competition: Italian sparrows were kept away from a popular feeding site by its parent species, resulting in poorer body condition and a significant drop in population size. Although no significant morphological change could be detected, after only 3 years of sympatry, the Italian sparrows had diverged significantly from the Spanish sparrows across a set of 81 protein-coding genes. These temporal genetic changes are mirrored by genetic divergence observed in older sympatric Italian sparrow populations within the same area of contact. Compared with microallopatric birds, sympatric ones are genetically more diverged from Spanish sparrows. Six significant outlier genes in the temporal and spatial comparison (i.e. showing the greatest displacement) have all been found to be associated with learning and neural development in other bird species. character displacement, interspecific competition, Passer, hybrid species, cognition, learning

• Eroukhmanoff, Fabrice; Rowe, Melissah; Cramer, Emily Rebecca A; Haas, Fredrik; Hermansen, Jo Skeie; Runemark, Anna; Johnsen, Arild & Sætre, Glenn-Peter (2016). Experimental evidence for ovarian hypofunction in sparrow hybrids. Avian Research.  ISSN 2053-7166.  7 . doi: 10.1186/s40657-016-0038-1
• Cramer, Emily Rebecca A; Laskemoen, Terje; Eroukhmanoff, Fabrice; Haas, Fredrik; Hermansen, Jo Skeie; Lifjeld, Jan Terje; Rowe, Melissah; Sætre, Glenn-Peter & Johnsen, Arild (2014). Testing a post-copulatory pre-zygotic reproductive barrier in a passerine species pair. Behavioral Ecology and Sociobiology.  ISSN 0340-5443.  68(7), s 1133- 1144 . doi: 10.1007/s00265-014-1724-9
• Eroukhmanoff, Fabrice; Elgvin, Tore Oldeide; Gonzales Rojas, Maria Fernanda; Haas, Fredrik; Hermansen, Jo Skeie & Sætre, Glenn-Peter (2014). Effect of Species Interaction on Beak Integration in an Avian Hybrid Species Complex. Evolutionary biology.  ISSN 0071-3260.  41(3), s 452- 458 . doi: 10.1007/s11692-014-9278-3
• Hermansen, Jo Skeie; Haas, Fredrik; Trier, Cassandra Nicole; Bailey, Richard Ian; Nederbragt, Alexander Johan; Marzal, Alfonso & Sætre, Glenn-Peter (2014). Hybrid speciation through sorting of parental incompatibilities in Italian sparrows. Molecular Ecology.  ISSN 0962-1083.  23(23), s 5831- 5842 . doi: 10.1111/mec.12910
• Trier, Cassandra Nicole; Hermansen, Jo Skeie; Sætre, Glenn-Peter & Bailey, Richard Ian (2014). Evidence for Mito-Nuclear and Sex-Linked Reproductive Barriers between the Hybrid Italian Sparrow and Its Parent Species. PLoS Genetics.  ISSN 1553-7390.  10(1) . doi: 10.1371/journal.pgen.1004075 Full text in Research Archive.
• Abbott, R; Albach, D; Ansell, S; Arntzen, JW; Baird, SJE; Bierne, N; Boughman, J; Brelsford, A; Buerkle, CA; Buggs, R; Butlin, RK; Dieckmann, U; Eroukhmanoff, Fabrice; Grill, A; Cahan, SH; Hermansen, Jo Skeie; Hewitt, G; Hudson, AG; Jiggins, C; Jones, J; Keller, B; Marczewski, T; Mallet, J; Martinez-Rodriguez, P; Most, M; Mullen, S; Nichols, R; Nolte, AW; Parisod, C; Pfennig, K; Rice, AM; Ritchie, MG; Seifert, B; Smadja, CM; Stelkens, R; Szymura, JM; Vainola, R; Wolf, JBW & Zinner, D (2013). Hybridization and speciation. Journal of Evolutionary Biology.  ISSN 1010-061X.  26(2), s 229- 246 . doi: 10.1111/j.1420-9101.2012.02599.x
• Eroukhmanoff, Fabrice; Hermansen, Jo Skeie; Bailey, Richard Ian; Sæther, Stein Are & Sætre, Glenn-Peter (2013). Local adaptation within a hybrid species. Heredity.  ISSN 0018-067X.  111(4), s 286- 292 . doi: 10.1038/hdy.2013.47
• Sætre, Glenn-Peter; Riyahi, Sepand; Aliabadian, M.; Hermansen, Jo Skeie; Hogner, Silje; Olsson, U.; Gonzales Rojas, Maria Fernanda; Sæther, Stein Are; Trier, Cassandra Nicole & Elgvin, Tore Oldeide (2012). Single origin of human commensalism in the house sparrow. Journal of Evolutionary Biology.  ISSN 1010-061X.  25(4), s 788- 796 . doi: 10.1111/j.1420-9101.2012.02470.x
• Elgvin, Tore Oldeide; Hermansen, Jo Skeie; Fijarczyk, Anna; Bonnet, Timothee; Borge, Thomas; Sæther, Stein Are; Voje, Kjetil Lysne & Sætre, Glenn-Peter (2011). Hybrid speciation in sparrows II: a role for sex chromosomes?. Molecular Ecology.  ISSN 0962-1083.  20(18), s 3823- 3837 . doi: 10.1111/j.1365-294X.2011.05182.x
• Hermansen, Jo Skeie; Sæther, Stein Are; Elgvin, Tore Oldeide; Borge, Thomas; Hjelle, Elin & Sætre, Glenn-Peter (2011). Hybrid speciation in sparrows I: phenotypic intermediacy, genetic admixture and barriers to gene flow. Molecular Ecology.  ISSN 0962-1083.  20(18), s 3812- 3822 . doi: 10.1111/j.1365-294X.2011.05183.x
• Sæther, Stein Are; Hermansen, Jo Skeie; Borge, Thomas; Hjelle, Elin & Sætre, Glenn-Peter (2009). Molecular genetics of the Italian sparrow: a separate species, a variety of house sparrow or Spanish sparrow, or a hybrid?. Ecologia Urbana.  ISSN 1974-8388.  21(1), s 26- 27

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• Hermansen, Jo Skeie (2016). A fruitful affair: Speciation by hybridization in Passer sparrows.
• Hermansen, Jo Skeie (2016). From sparrowling to Grim Reaper.
• Hermansen, Jo Skeie (2015). Et forskningsprosjekt.
• Hermansen, Jo Skeie (2015). PhD – dos and don'ts.
• Hermansen, Jo Skeie (2015). The role of hybridization in evolution.
• Cramer, Emily Rebecca A; Ålund, Murielle; Laskemoen, Terje; Eroukhmanoff, Fabrice; Eybert, Marie-Christine; Haas, Fredrik; Hermansen, Jo Skeie; Lifjeld, Jan Terje; Rowe, Melissah; Qvarnström, Anna; Sætre, Glenn-Peter & Johnsen, Arild (2014). Post-copulatory, pre-zygotic isolating barriers in passerine birds?.
• Eroukhmanoff, Fabrice; Hermansen, Jo Skeie; Elgvin, Tore Oldeide; Sæther, Stein Are & Sætre, Glenn-Peter (2014). Genome wide signature of character displacement in a hybrid species.
• Hermansen, Jo Skeie (ed.) (2014). Hybrid speciation is for the birds (and plants, reptiles, fish, and insects).
• Hermansen, Jo Skeie (2014). Origins of Sparrow Speciation. Science.  ISSN 0036-8075.
• Hermansen, Jo Skeie (2014). Parental sympatry recapitulates processes involved in hybrid speciation.
• Cramer, Emily Rebecca A; Laskemoen, Terje; Eroukhmanoff, Fabrice; Haas, Fredrik; Hermansen, Jo Skeie; Lifjeld, Jan Terje; Rowe, Melissah; Sætre, Glenn-Peter & Johnsen, Arild (2013). An experimental test of a potential post-copulatory pre-zygotic reproductive barrier in a passerine species pair.
• Cramer, Emily Rebecca A; Laskemoen, Terje; Eroukhmanoff, Fabrice; Haas, Fredrik; Hermansen, Jo Skeie; Lifjeld, Jan Terje; Rowe, Melissah; Sætre, Glenn-Peter & Johnsen, Arild (2013). Testing a post-copulatory pre-zygotic reproductive barrier in a passerine species pair.
• Hermansen, Jo Skeie (2013). Reproductive barriers in a hybrid species system.
• Hermansen, Jo Skeie (2012). Hybrid speciation in sparrows.
• Hermansen, Jo Skeie (2012). Reproductive barriers in a hybrid species system.
• Hermansen, Jo Skeie; Elgvin, Tore Oldeide; Sæther, Stein Are; Borge, Thomas; Hjelle, Elin & Sætre, Glenn-Peter (2010). Hybrid speciation in sparrows.
• Hermansen, Jo Skeie; Sæther, Stein Are; Borge, Thomas; Hjelle, Elin; Elgvin, Tore Oldeide & Sætre, Glenn-Peter (2009). Is the Italian sparrow a result of hybrid speciation?.

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