Jan T Lifjeld
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Explore the profile of Jan T Lifjeld including associated specialties, affiliations and a list of published articles.
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57
Citations
593
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Recent Articles
1.
Bagdonaite L, Mauvisseau Q, Johnsen A, Lifjeld J, Leder E
Ecol Evol
. 2025 Mar;
15(3):e71055.
PMID: 40027421
Tremendous variation in sperm morphology is observed across the animal kingdom. Within avian taxa, the songbirds (infraorder Passerides) have the largest variation in sperm morphology. Their spermatozoa move by using...
2.
Lifjeld J, Cramer E, Leder E, Voje K
Evolution
. 2024 Nov;
79(1):134-143.
PMID: 39485024
Sperm morphology varies considerably among species. Sperm traits may contribute to speciation if they diverge fast in allopatry and cause conspecific sperm precedence upon secondary contact. However, their role in...
3.
Viitaniemi H, Leder E, Kauzal O, Stopkova R, Stopka P, Lifjeld J, et al.
Mol Ecol
. 2023 Dec;
33(24):e17236.
PMID: 38126688
Chromosomal inversions have been identified in many natural populations and can be responsible for novel traits and rapid adaptation. In zebra finch, a large region on the Z chromosome has...
4.
Lifjeld J, de Gabriel Hernando M, Fuertes Marcos B, Gronstol G, Anmarkrud J, Matschiner M, et al.
Evolution
. 2023 Aug;
77(11):2352-2364.
PMID: 37624670
When populations become geographically isolated, they begin to diverge in various traits and at variable rates. The dynamics of such trait divergences are relevant for understanding evolutionary processes such as...
5.
Cramer E, Yilma Z, Lifjeld J
J Evol Biol
. 2022 Nov;
36(1):131-143.
PMID: 36357998
Sperm cells are exceptionally morphologically diverse across taxa. However, morphology can be quite uniform within species, particularly for species where females copulate with many males per reproductive bout. Strong sexual...
6.
Cramer E, Gronstol G, Lifjeld J
J Morphol
. 2022 Oct;
283(12):1577-1589.
PMID: 36260518
In contrast to numerous studies on spermatozoa length, relatively little work focuses on the width of spermatozoa, and particularly the width of the midpiece and flagellum. In flagellated spermatozoa, the...
7.
Johannessen L, Lifjeld J
Zootaxa
. 2022 Sep;
5150(4):451-486.
PMID: 36095651
A list of all known bird type specimens in the collection of the Natural History Museum, University of Oslo, Norway is presented. The specimens originate from northern Australia, eastern Indonesia...
8.
Lifjeld J, Slagsvold T
Proc Natl Acad Sci U S A
. 2022 Jul;
119(30):e2207108119.
PMID: 35858461
No abstract available.
9.
Lifjeld J
Evolution
. 2022 May;
76(9):2199-2203.
PMID: 35554925
Safran et al. (2016a) manipulated two sexual traits (ventral plumage coloration and tail streamer length) in male barn swallows (Hirundo rustica) and reported divergent effects on paternity change between two...
10.
Lifjeld J, Kleven O, Fossoy F, Jacobsen F, Laskemoen T, Rudolfsen G, et al.
Behav Ecol Sociobiol
. 2022 May;
76(5):61.
PMID: 35535127
Abstract: In birds with extrapair mating, older males usually have higher fertilization success than younger males. Two hypotheses can potentially explain this pattern: 1) females prefer older, and often more...