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, Sanduni Talagala Department of Biology, Wilfrid Laurier University , Waterloo, ON , Canada Corresponding author: Sanduni Talagala, Department of Biology, Wilfrid Laurier University, 75 University Avenue West, Waterloo, ON N2L 3C5, Canada. Email: tala5870@mylaurier.ca Search for other works by this author on: Oxford Academic Emily Rakosy Department of Biology, Wilfrid Laurier University , Waterloo, ON , Canada Department of Biology, University of Toronto Mississauga , Mississauga, ON , Canada Search for other works by this author on: Oxford Academic Tristan A F Long Department of Biology, Wilfrid Laurier University , Waterloo, ON , Canada Search for other works by this author on: Oxford Academic
https://orcid.org/0000-0002-5997-1878 Journal of Evolutionary Biology, Volume 37, Issue 9, September 2024, Pages 1043–1054, https://doi.org/10.1093/jeb/voae089
Published:
18 July 2024
Article history
Received:
01 March 2024
Revision received:
24 May 2024
Accepted:
16 July 2024
Published:
18 July 2024
Corrected and typeset:
31 July 2024
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Sanduni Talagala, Emily Rakosy, Tristan A F Long, Beyond simple vs. complex: exploring the nuanced and unexpected effects of spatial environmental complexity on mating patterns and female fecundity, Journal of Evolutionary Biology, Volume 37, Issue 9, September 2024, Pages 1043–1054, https://doi.org/10.1093/jeb/voae089
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Abstract
The features of the physical environment set the stage upon which sexual selection operates, and consequently can have a significant impact on variation in realized individual fitness, and influence a population’s evolutionary trajectory. This phenomenon has been explored empirically in several studies using fruit flies (Drosophila melanogaster) which have found that changing the spatial complexity of the mating environment influenced male–female interaction dynamics, (re)mating rates, and realized female fecundities. However, these studies did not explore mating patterns, which can dramatically alter the genetic composition of the next generation, and frequently only compared a single, small “simple” environment to a single larger “complex” environment. While these studies have shown that broadly changing the characteristics of the environment can have big effects on reproductive dynamics, the plasticity of this outcome to more subtle changes has not been extensively explored. Our study set out to compare patterns of mating and courtship between large- and small-bodied males and females, and female fecundities in both a simple environment and 2 distinctly different spatially complex environments. We found that realized offspring production patterns differed dramatically between all 3 environments, indicating that the effects of increasing spatial complexity on mating outcomes are sensitive to the specific type of environmental complexity. Furthermore, we observed female fecundities were higher for flies in both complex environments compared those in the simple environment, supporting its role as a mediator of sexual conflict. Together, these results show that the union of gametes within a population can be greatly influenced by the specific spatial features of the environment and that while some outcomes of increased environmental complexity are likely generalizable, other phenomena such as mating patterns and courtship rates may vary from one complex environment to another.
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mating patterns, mate choice, courtship, fecundity, environmental complexity, sexual conflict, male harassment, Drosophila melanogaster
© The Author(s) 2024. Published by Oxford University Press on behalf of the European Society of Evolutionary Biology. All rights reserved. For commercial re-use, please contact reprints@oup.com for reprints and translation rights for reprints. All other permissions can be obtained through our RightsLink service via the Permissions link on the article page on our site—for further information please contact journals.permissions@oup.com.
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Issue Section:
research articles
Handling Editor: Alejandro Gonzalez-Voyer Alejandro Gonzalez-Voyer Handling Editor Search for other works by this author on: Oxford Academic
Associate Editor: Pau Carazo Pau Carazo Associate Editor Search for other works by this author on: Oxford Academic
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