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Jan T. Lifjeld

Jan T. Lifjeld

D-Index & Metrics

Ecology and Evolution

D-Index
63
Citations
11326
World Ranking
2000
National Ranking
30

Overview

Jan T. Lifjeld is a researcher affiliated with the University of Oslo in Norway. Their work spans multiple fields related to biology, with a focus on environmental science and agricultural and biological sciences. Lifjeld's expertise encompasses areas such as ecology, evolution, behavior, and molecular biology.

The scientist's research predominantly covers topics within animal behavior and reproduction, and avian ecology and behavior. Additional focal points include plant and animal studies, wildlife ecology and conservation, genetic diversity and population structure, as well as fish ecology and management studies and insect and arachnid ecology and behavior.

Lifjeld has contributed scholarly articles in several notable scientific journals. Recent publications include:

  • When Older Males Sire More Offspring-Increased Attractiveness or Higher Fertility?, 2022, Behavioral Ecology and Sociobiology
  • Spatiotemporal patterns of avian host-parasite interactions in the face of biogeographical range expansions, 2020, Molecular Ecology
  • Longer Sperm Swim More Slowly in the Canary Islands Chiffchaff, 2021, Cells
  • Sperm length variation among Afrotropical songbirds reflects phylogeny rather than adaptations to the tropical environment, 2020, Zoology
  • Selection on sperm size in response to promiscuity and variation in female sperm storage organs, 2022, Journal of Evolutionary Biology

The majority of Lifjeld's publications are found in journals such as Behavioral Ecology and Sociobiology, Ecology and Evolution, Evolution, bioRxiv (Cold Spring Harbor Laboratory), and Cells.

Coauthorship has been an important aspect of Lifjeld's research endeavors. Frequent collaborators include:

  • Arild Johnsen
  • Emily R. A. Cramer
  • Erica H. Leder
  • Lars Erik Johannessen
  • Gaute Grønstøl

The research fields represented in Lifjeld's body of work correspond to environmental science, agricultural and biological sciences, and biochemistry, genetics, and molecular biology. Subfields featured prominently include ecology, evolution, behavior and systematics, genetics, nature and landscape conservation, and molecular biology.

Best Publications

  • Females increase offspring heterozygosity and fitness through extra-pair matings

    Katharina Foerster;Kaspar Delhey;Arild Johnsen;Jan T. Lifjeld

  • POLYGYNY IN BIRDS: THE ROLE OF COMPETITION BETWEEN FEMALES FOR MALE PARENTAL CARE

    Tore Slagsvold;Jan T. Lifjeld

  • Extra-pair paternity in monogamous tree swallows

    Jan T. Lifjeld;Peter O. Dunn;Raleigh J. Robertson;Peter T. Boag

  • Female bluethroats enhance offspring immunocompetence through extra-pair copulations

    Arild Johnsen;Vegard Andersen;Christine Sunding;Jan T. Lifjeld

  • Variation in plumage colour of the Great tit Parus major in relation to habitat, season and food

    T. Slagsvold;J. T. Lifjeld

  • Ultraviolet plumage ornamentation affects social mate choice and sperm competition in bluethroats (Aves: Luscinia s. svecica): a field experiment

    Arild Johnsen;Staffan Andersson;Jonas rnborg;Jan T. Lifjeld

  • Female control of extra-pair fertilization in tree swallows

    Jan T. Lifjeld;Raleigh J. Robertson

  • DNA barcoding of Scandinavian birds reveals divergent lineages in trans-Atlantic species

    Arild Johnsen;Eirik Rindal;Per G. P. Ericson;Dario Zuccon

  • INTRASPECIFIC VARIATION IN SPERM LENGTH IS NEGATIVELY RELATED TO SPERM COMPETITION IN PASSERINE BIRDS

    Oddmund Kleven;Terje Laskemoen;Frode Fossøy;Raleigh J. Robertson

  • Carotenoids in food chain studies—II. The food chain of Parus SPP. Monitored by carotenoid analysis☆

    V Partali;S Liaaen-Jensen;T Slagsvold;J.T Lifjeld

  • On the cost of searching for a mate in female pied flycatchers Ficedula hypoleuca

    Tore Slagsvold;Jan T. Lifjeld;Geir Stenmark;Torgrim Breiehagen

  • Mate choice and imprinting in birds studied by cross-fostering in the wild

    Tore Slagsvold;Bo T. Hansen;Lars E. Johannessen;Jan T. Lifjeld

  • Effects of breeding density, synchrony, and experience on extrapair paternity in tree swallows

    Peter O. Dunn;Linda A. Whittingham;Jan T. Lifjeld;Raleigh J. Robertson

  • The function of extrapair paternity in blue tits and great tits: good genes or fertility insurance?

    Christin Krokene;Kari Rigstad;Monica Dale;Jan T. Lifjeld

  • Influence of Male and Female Quality on Clutch Size in Tits (Parus Spp.)

    Tore Slagsvold;Jan T. Lifjeld

  • COMPARATIVE EVIDENCE FOR THE EVOLUTION OF SPERM SWIMMING SPEED BY SPERM COMPETITION AND FEMALE SPERM STORAGE DURATION IN PASSERINE BIRDS

    Oddmund Kleven;Frode Fossøy;Frode Fossøy;Terje Laskemoen;Raleigh J. Robertson

  • Low frequency of extra-pair paternity in pied flycatchers revealed by DNA fingerprinting

    Jan T. Lifjeld;Tore Slagsvold;Helene M. Lampe

  • Genetic relationships in the peregrine falcon ( Falco peregrinus ) analysed by microsatellite DNA markers

    M. Nesje;K. H. Røed;J. T. Lifjeld;P. Lindberg

  • The function of courtship feeding during incubation in the pied flycatcher Ficedula hypoleuca

    Jan T. Lifjeld;Tore Slagsvold

  • Polygyny in the pied flycatcher, Ficedula hypoleuca: a test of the deception hypothesis

    Geir Stenmark;Tore Slagsvold;Jan T. Lifjeld

Frequent Co-Authors

Arild Johnsen
Arild Johnsen University of Oslo
Oddmund Kleven
Oddmund Kleven Norwegian Institute for Nature Research
Tore Slagsvold
Tore Slagsvold University of Oslo
Tomáš Albrecht
Tomáš Albrecht Charles University
Raleigh J. Robertson
Raleigh J. Robertson Queen's University
Peter O. Dunn
Peter O. Dunn University of Wisconsin–Milwaukee
Geir Rudolfsen
Geir Rudolfsen University of Tromsø - The Arctic University of Norway
Trond Amundsen
Trond Amundsen Norwegian University of Science and Technology
Linda A. Whittingham
Linda A. Whittingham University of Wisconsin–Milwaukee
Donald Blomqvist
Donald Blomqvist University of Gothenburg

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