Ant queens increase their reproductive efforts after pathogen infection

J. Giehr, A.V. Grasse, S. Cremer, J. Heinze, A. Schrempf, Royal Society Open Science 4 (2017) 170547.

Download
OA 530.41 KB

Journal Article | Published | English
Author
; ; ; ;
Department
Abstract
Infections with potentially lethal pathogens may negatively affect an individual’s lifespan and decrease its reproductive value. The terminal investment hypothesis predicts that individuals faced with a reduced survival should invest more into reproduction instead of maintenance and growth. Several studies suggest that individuals are indeed able to estimate their body condition and to increase their reproductive effort with approaching death, while other studies gave ambiguous results. We investigate whether queens of a perennial social insect (ant) are able to boost their reproduction following infection with an obligate killing pathogen. Social insect queens are special with regard to reproduction and aging, as they outlive conspecific non-reproductive workers. Moreover, in the ant Cardiocondyla obscurior, fecundity increases with queen age. However, it remained unclear whether this reflects negative reproductive senescence or terminal investment in response to approaching death. Here, we test whether queens of C. obscurior react to infection with the entomopathogenic fungus Metarhizium brunneum by an increased egg-laying rate. We show that a fungal infection triggers a reinforced investment in reproduction in queens. This adjustment of the reproductive rate by ant queens is consistent with predictions of the terminal investment hypothesis and is reported for the first time in a social insect.
Publishing Year
Date Published
2017-07-05
Journal Title
Royal Society Open Science
Acknowledgement
We thank two anonymous reviewers for helpful suggestions on the manuscript.
Volume
4
Issue
7
Article Number
170547
ISSN
IST-REx-ID

Cite this

Giehr J, Grasse AV, Cremer S, Heinze J, Schrempf A. Ant queens increase their reproductive efforts after pathogen infection. Royal Society Open Science. 2017;4(7):170547. doi:10.1098/rsos.170547
Giehr, J., Grasse, A. V., Cremer, S., Heinze, J., & Schrempf, A. (2017). Ant queens increase their reproductive efforts after pathogen infection. Royal Society Open Science, 4(7), 170547. https://doi.org/10.1098/rsos.170547
Giehr, Julia, Anna V Grasse, Sylvia Cremer, Jürgen Heinze, and Alexandra Schrempf. “Ant Queens Increase Their Reproductive Efforts after Pathogen Infection.” Royal Society Open Science 4, no. 7 (2017): 170547. https://doi.org/10.1098/rsos.170547 .
J. Giehr, A. V. Grasse, S. Cremer, J. Heinze, and A. Schrempf, “Ant queens increase their reproductive efforts after pathogen infection,” Royal Society Open Science, vol. 4, no. 7, p. 170547, 2017.
Giehr J, Grasse AV, Cremer S, Heinze J, Schrempf A. 2017. Ant queens increase their reproductive efforts after pathogen infection. Royal Society Open Science. 4(7), 170547.
Giehr, Julia, et al. “Ant Queens Increase Their Reproductive Efforts after Pathogen Infection.” Royal Society Open Science, vol. 4, no. 7, Royal Society, The, 2017, p. 170547, doi:10.1098/rsos.170547 .
All files available under the following license(s):
Creative Commons License:
CC-BYCreative Commons Attribution 4.0 International Public License (CC-BY 4.0)
Main File(s)
Access Level
OA Open Access
Last Uploaded
2018-12-12T10:08:24Z


Export

Marked Publications

Open Data IST Research Explorer

Search this title in

Google Scholar