Ingrid Ahnesjö
Professor at Department of Ecology and Genetics; Animal Ecology
- E-mail:
- Ingrid.Ahnesjo@ebc.uu.se
- Visiting address:
- Evolutionsbiologiskt centrum (EBC)
Norbyvägen 18 D - Postal address:
- Norbyvägen 18 D
752 36 UPPSALA
Short presentation
I study the diversity and variability of animal mating patterns and parental care patterns, in terms of evolutionary behavioural ecology. In particular I enjoy to study the amazing reproductive ecology of pipefishes with multiple matings, predominant female mating competition and male pregnancy. I am also dedicated to teaching of evolution, organismal diversity, the scientific method, marine and behavioural ecology as well as gender perspectives in biology.
Keywords
- behavioral ecology
- syngnathidae
- animal mating system
- pipefish

Publications
Selection of publications
Considering Gender‑Biased Assumptions in Evolutionary Biology
Part of Evolutionary biology, p. 1-5, 2020
- DOI for Considering Gender‑Biased Assumptions in Evolutionary Biology
- Download full text (pdf) of Considering Gender‑Biased Assumptions in Evolutionary Biology
Pipefish male pregnancy: Why do females prefer large mates?
Part of Research Outreach, 2020
The "Sex Role" Concept: An Overview and Evaluation
Part of Evolutionary biology, p. 461-470, 2013
Evidence of paternal nutrient provisioning to embryos in broad-nosed pipefish Syngnathus typhle
Part of Journal of Fish Biology, p. 1725-1737, 2011
The dynamics of operational sex ratios and competition for mates
Part of TRENDS IN ECOLOGY & EVOLUTION, p. 404-408, 1996
Pipefishes and seahorses: are they all sex-role reversed?
Part of Trends in Ecology & Evolution, p. 237-241, 1992
Recent publications
Inkluderande och tvärvetenskaplig utbildningspraktik, när biologi och genusvetenskap möts
Part of Högre Utbildning, p. 90-97, 2024
Large and interactive pipefish females display ornaments for longer with many males around
Part of Behavioral Ecology and Sociobiology, 2024
- DOI for Large and interactive pipefish females display ornaments for longer with many males around
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Part of Behavioral Ecology, 2024
Part of Journal of Research in Science Teaching, p. 1195-1222, 2023
- DOI for "I try to encourage my students to think, read, and talk science": Intelligible identities in university teachers' figured worlds of higher education biology
- Download full text (pdf) of "I try to encourage my students to think, read, and talk science": Intelligible identities in university teachers' figured worlds of higher education biology
Part of Science Education, p. 837-854, 2021
- DOI for “Quite ironic that even I became a natural scientist”: Students' imagined identity trajectories in the Figured World of Higher Education Biology
- Download full text (pdf) of “Quite ironic that even I became a natural scientist”: Students' imagined identity trajectories in the Figured World of Higher Education Biology
All publications
Articles in journal
Inkluderande och tvärvetenskaplig utbildningspraktik, när biologi och genusvetenskap möts
Part of Högre Utbildning, p. 90-97, 2024
Large and interactive pipefish females display ornaments for longer with many males around
Part of Behavioral Ecology and Sociobiology, 2024
- DOI for Large and interactive pipefish females display ornaments for longer with many males around
- Download full text (pdf) of Large and interactive pipefish females display ornaments for longer with many males around
Part of Behavioral Ecology, 2024
Part of Journal of Research in Science Teaching, p. 1195-1222, 2023
- DOI for "I try to encourage my students to think, read, and talk science": Intelligible identities in university teachers' figured worlds of higher education biology
- Download full text (pdf) of "I try to encourage my students to think, read, and talk science": Intelligible identities in university teachers' figured worlds of higher education biology
Part of Science Education, p. 837-854, 2021
- DOI for “Quite ironic that even I became a natural scientist”: Students' imagined identity trajectories in the Figured World of Higher Education Biology
- Download full text (pdf) of “Quite ironic that even I became a natural scientist”: Students' imagined identity trajectories in the Figured World of Higher Education Biology
The evolution of ecological specializationacross the range of a broadly distributedmarine species
Part of Evolution, p. 629-643, 2020
- DOI for The evolution of ecological specializationacross the range of a broadly distributedmarine species
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Considering Gender‑Biased Assumptions in Evolutionary Biology
Part of Evolutionary biology, p. 1-5, 2020
- DOI for Considering Gender‑Biased Assumptions in Evolutionary Biology
- Download full text (pdf) of Considering Gender‑Biased Assumptions in Evolutionary Biology
Pipefish male pregnancy: Why do females prefer large mates?
Part of Research Outreach, 2020
Pipefish embryo oxygenation, survival, and development: egg size, male size, and temperature effects
Part of Behavioral Ecology, p. 1451-1460, 2019
- DOI for Pipefish embryo oxygenation, survival, and development: egg size, male size, and temperature effects
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Nutritional state - a survival kit for brooding pipefish fathers
Part of Biological Journal of the Linnean Society, p. 312-318, 2017
- DOI for Nutritional state - a survival kit for brooding pipefish fathers
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Part of Journal of Evolutionary Biology, p. 150-160, 2017
Part of Ecology and Evolution, p. 647-655, 2016
- DOI for Within species support for the expensive tissue hypothesis: a negative association between brain size and visceral fat storage in females of the Pacific seaweed pipefish
- Download full text (pdf) of Within species support for the expensive tissue hypothesis: a negative association between brain size and visceral fat storage in females of the Pacific seaweed pipefish
Part of Ecology and Evolution, p. 3608-3620, 2016
- DOI for Evolutionary ecology of pipefish brooding structures: embryo survival and growth do not improve with a pouch
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Costs and Benefits to Pregnant Male Pipefish Caring for Broods of Different Sizes
Part of PLOS ONE, 2016
- DOI for Costs and Benefits to Pregnant Male Pipefish Caring for Broods of Different Sizes
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Embryo oxygenation in pipefish brood pouches: novel insights
Part of Journal of Experimental Biology, p. 1639-1646, 2015
Effects of mating order and male size on embryo survival in a pipefish
Part of Biological Journal of the Linnean Society, p. 639-645, 2015
The evolutionary puzzle of egg size, oxygenation and parental care in aquatic environments
Part of Proceedings of the Royal Society of London. Biological Sciences, 2015
Problemet med "könsroller" kvarstår
Part of Tidskrift för Genusvetenskap, p. 136-137, 2013
Vad kan vi lära av biologisk forskning om “könsroller”?
Part of Tidskrift för Genusvetenskap, p. 51-56, 2012
Multiply mated males show higher embryo survival in a paternally caring fish
Part of Behavioral Ecology, p. 625-629, 2011
The effect of maternal body size on embryo survivorship in the broods of pregnant male pipefish
Part of Behavioral Ecology and Sociobiology, p. 1169-1177, 2011
The relationship between female body size and egg size in pipefishes
Part of Journal of Fish Biology, p. 1847-1854, 2011
Evidence of paternal nutrient provisioning to embryos in broad-nosed pipefish Syngnathus typhle
Part of Journal of Fish Biology, p. 1725-1737, 2011
Part of Journal of Fish Biology, p. 1833-1846, 2011
The biology of Syngnathidae: pipefishes, seadragons and seahorses
Part of Journal of Fish Biology, p. 1597-1602, 2011
Reproductive compensation in broad-nosed pipefish females
Part of Proceedings of the Royal Society of London. Biological Sciences, p. 1581-1587, 2010
Brooding fathers, not siblings, take up nutrients from embryos
Part of Proceedings of the Royal Society of London. Biological Sciences, p. 971-977, 2010
Part of Behavioral Ecology and Sociobiology, p. 345-354, 2009
Behavioural temperature preference in a brooding male pipefish Syngnathus typhle
Part of Journal of Fish Biology, p. 1039-1045, 2008
Do egg size and parental care coevolve in fish?
Part of Journal of Fish Biology, p. 1499-1515, 2005
Part of Evolution, p. 1374-1386, 2003
Part of The Journal of Heredity, p. 159-166, 2001
Using potential reproductive rates to predict mating competition among individuals qualified to mate
Part of BEHAVIORAL ECOLOGY, p. 397-401, 2001
Female fifteen-spined sticklebacks prefer better fathers
Part of ANIMAL BEHAVIOUR, p. 1177-1183, 1998
Apparent resource competition among embryos in the brood pouch of a male pipefish
Part of BEHAVIORAL ECOLOGY AND SOCIOBIOLOGY, p. 167-172, 1996
Reproductive ecology of five pipefish species in one eelgrass meadow
Part of Environmental Biology of Fishes, p. 347-361, 1995
Part of BEHAVIORAL ECOLOGY, p. 229-233, 1995
Operational sex ratios and behavioral sex differences in a pipefish population
Part of Behavioral Ecology and Sociobiology, p. 435-442, 1994
Plasma-levels of sex steroids in 3 species of pipefish (Syngnathidae)
Part of Canadian Journal of Zoology, p. 1903-1907, 1993
The role of females in influencing mating patterns
Part of Behavioral Ecology, p. 187-189, 1993
Pipefishes and seahorses: are they all sex-role reversed?
Part of Trends in Ecology & Evolution, p. 237-241, 1992
Fewer Newborn Result In Superior Juveniles In The Paternally Brooding Pipefish Syngnathus-Typhle L
Part of Journal of Fish Biology, p. 53-63, 1992
Reproductive success of females limited by males in two pipefish species
Part of American Naturalist, p. 506-516, 1989
Multiple matings and paternal brood care in the pipefish Syngnathus typhle
Part of Oikos, p. 184-188, 1988
Reproductive Costs in two Sex-Role Reversed Pipefish Species (Syngnathidae)
Part of Journal of Animal Ecology, p. 929-942, 1988
Mate choice, fecundity and sexual dimorphism in two pipefish species (Syngnathidae)
Part of Behavioral Ecology and Sociobiology, p. 301-307, 1986
Reversed sex-roles and parental energy investment in zygotes of two pipefish (Syngnathidae) species
Part of Marine Ecology Progress Series, p. 209-215, 1986
Articles, review/survey
The "Sex Role" Concept: An Overview and Evaluation
Part of Evolutionary biology, p. 461-470, 2013
Chapters in book
Evolution of Animal Mating Systems
Part of Oxford Bibliographies, Oxford University Press (OUP), 2021
Mate choice in males and females
Part of Encyclopedia of Animal Behavior, p. 432-440, Elsevier, 2019
Mate Choice in Males and Females
Part of Reference Module in Life Sciences, p. 394-398, Elsevier, 2017
Mate Choice in Males and Females
Part of Encyclopedia of Animal Behavior, p. 394-398, Academic Press, 2010
Variation in sexual selection in fishes
Part of Fish Behaviour, p. 303-335, Science Publishers Inc., 2008
Operational sex ratios and mating competition. Chapter 18
Part of Sex ratios, p. 366-382, Cambridge University Press, 2002
Comprehensive doctoral thesis
Conference papers
Reports
2018
Other
Recension: Cordelia Fine. Testosteron Rex: Myten om våra könade hjärnor
Part of Tidskrift för Genusvetenskap, p. 123-124, 2018
Bokrecension av Retorik för naturvetare: skrivande som fördjupar lärandet
Part of Högre Utbildning, p. 83-85, 2014
Equal Opportunity for Sexual Evolution
Part of BioScience, p. 641-642, 2011
Part of Journal of Fish Biology, p. 308-309, 2010
The dynamics of operational sex ratios and competition for mates
Part of TRENDS IN ECOLOGY & EVOLUTION, p. 404-408, 1996