Jan T. Lifjeld

University of Oslo — Norway

Agricultural and Biological Sciences · Life Sciences

55h-index9.5kcitations237works3.32yr avg
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Research Topics

Animal Behavior and Reproduction(167), Avian ecology and behavior(128), Plant and animal studies(100), Genetic diversity and population structure(56), Wildlife Ecology and Conservation(48)

Publications236 total

Brachiopods from Late Jurassic-Early Cretaceous hydrocarbon seep deposits, central Spitsbergen, Svalbard
The Catalogue of Life·2026Open Access
Weak sperm differentiation in Darwin’s finches
Biological Journal of the Linnean Society·2025Open Access
Unusual Sperm Morphology in Two Sedentary Songbird Species
Ecology and Evolution·2025Open Access
Independent evolution of atypical sperm morphology in a passerine bird
Journal of Evolutionary Biology·2025· 1 citedOpen Access
Extrapair copulations in coal tits (Periparus ater): female insurance against male infertility?
Behavioral Ecology and Sociobiology·2025· 1 citedOpen Access
Assessing reliability and accuracy of qPCR, dPCR and ddPCR for estimating mitochondrial DNA copy number in songbird blood and sperm cells
PeerJ·2025· 3 citedOpen Access
Sperm <scp>mtDNA</scp> Copy Number Is Not Associated With Midpiece Size Among Songbirds
Ecology and Evolution·2025Open Access
Assessing reliability and accuracy of qPCR, dPCR and ddPCR for estimating mtDNA copy number in songbird blood and sperm cells
2024· 1 citedOpen Access
Sperm as a speciation phenotype in promiscuous songbirds
Evolution·2024· 4 citedOpen Access
Independent evolution of atypical sperm morphology in a passerine bird, the red-browed finch ( <i>Neochmia temporalis temporalis</i> )
2024· 1 citedOpen Access
Morphometric differences between sexes and populations in Norwegian Dunlins <i>Calidris alpina</i>
Bird Study·2024· 1 citedOpen Access
Impact of Z chromosome inversions on gene expression in testis and liver tissues in the zebra finch
Molecular Ecology·2023· 5 citedOpen Access
Rapid sperm length divergence in a polygynandrous passerine: a mechanism of cryptic speciation?
Evolution·2023· 5 citedOpen Access
Tissue-specific expression of heterozygous Z-inversions in the zebra finch
2023Open Access
Arctic Specimens in the Zoological Collections at the Natural History Museum, University of Oslo, Norway (NHMO)
Collections A Journal for Museum and Archives Professionals·2023· 3 cited
Do female bluethroats without extra-pair offspring have more MHC-compatible social mates?
Behavioral Ecology and Sociobiology·2023· 6 citedOpen Access
Selection on sperm size in response to promiscuity and variation in female sperm storage organs
Journal of Evolutionary Biology·2022· 10 citedOpen Access
Flagellum tapering and midpiece volume in songbird spermatozoa
Journal of Morphology·2022· 6 citedOpen Access
Effects of fixatives and storage duration on avian sperm morphology
Journal für Ornithologie·2022· 6 citedOpen Access
Selection on sperm size in response to promiscuity and variation in female sperm storage organs
2022· 1 citedOpen Access
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Frequent Co-authors

Tore Slagsvold(16), Arild Johnsen(11), Raleigh J. Robertson(10), Oddmund Kleven(10), Peter O. Dunn(6), Terje Laskemoen(6), Linda A. Whittingham(5), Frode Fossøy(4), Bart Kempenaers(3), Trond Amundsen(3), Tomáš Albrecht(3), Peter T. Boag(2), Staffan Andersson(2), Jonas Örnborg(2), Geir Rudolfsen(2), Lars Erik Johannessen(2), Geir Stenmark(2), Melissah Rowe(2), Evi Van den Steen(2), R. Pinxten(2)