Impact of transgenerational immune priming on the defence of insect eggs against parasitism

Developmental and Comparative Immunology
Ute Trauer-Kizilelma, Monika Hilker

Abstract

Insects are known to prime the immune state of their offspring. However, although the beginning of insect life, the egg stage, is often greatly endangered by parasitism, no knowledge is available regarding whether transgenerational immune priming improves the immune responses of insect eggs to actual parasitoid attacks. Our study revealed suppression of the development of parasitoids in transgenerationally immune-primed Manduca sexta eggs and reduced emergence rates of parasitoids from these eggs. The higher defence efficiency of immune-primed M. sexta eggs against parasitoids was in agreement with the increased antibacterial activity and phenoloxidase activity of these eggs in response to parasitism compared to the eggs of control parents. Our study showed that immunochallenged insect parents could enable their offspring already in the egg stage to defend more efficiently against parasitic invaders. We discuss whether M. sexta benefits from transgenerational immune priming of eggs by limiting the population growth of egg parasitoids.

References

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Citations

Dec 24, 2015·Developmental and Comparative Immunology·Julián F Hillyer
Aug 11, 2015·Insect Biochemistry and Molecular Biology·Ute Trauer-Kizilelma, Monika Hilker
Jul 13, 2016·Seminars in Immunology·Barbara Milutinović, Joachim Kurtz
Sep 3, 2019·Frontiers in Immunology·Guillaume TetreauYannick Moret
Apr 12, 2020·Applied and Environmental Microbiology·Luis R Paniagua VoirolMonika Hilker
Sep 25, 2020·Royal Society Open Science·Erin L ColeRebeca B Rosengaus
May 10, 2017·Ecology and Evolution·Rebeca B RosengausWendy Smith
Mar 12, 2021·The Journal of Experimental Biology·Sugjit S PaddaZachary R Stahlschmidt
Aug 24, 2021·The Journal of Experimental Biology·Sugjit S PaddaZachary R Stahlschmidt

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