A1 Journal article (refereed)
Evolutionary Hysteresis and Ratchets in the Evolution of Periodical Cicadas (2019)
Toivonen, J., & Fromhage, L. (2019). Evolutionary Hysteresis and Ratchets in the Evolution of Periodical Cicadas. American Naturalist, 194(1), 38-46. https://doi.org/10.1086/703563
JYU authors or editors
Publication details
All authors or editors: Toivonen, Jaakko; Fromhage, Lutz
Journal or series: American Naturalist
ISSN: 0003-0147
eISSN: 1537-5323
Publication year: 2019
Volume: 194
Issue number: 1
Pages range: 38-46
Publisher: University of Chicago Press
Publication country: United States
Publication language: English
DOI: https://doi.org/10.1086/703563
Publication open access: Not open
Publication channel open access:
Publication is parallel published (JYX): https://jyx.jyu.fi/handle/123456789/66233
Abstract
It has been previously hypothesized that the perfectly synchronized mass emergence of periodical cicadas (Magicicada spp.) evolved as a result of a switch from size-based to age-based emergence. In the former case, cicada nymphs emerge immediately (at the first opportunity) on reaching maturity, whereas in the latter case, nymphs wait in order to emerge at a specific age. Here we use an individual-based model to simulate the cicada life cycle and to study the evolution of periodicity. We find that if age-based emergence evolves in a constant abiotic environment, it typically results in a population that is protoperiodic, and synchronous emergence of the whole population is not achieved. However, perfect periodicity and synchronous emergence can be attained, if the abiotic environment changes back and forth between favorable and unfavorable conditions (hysteresis). Furthermore, once age-based emergence evolves, generally it can only be invaded by other age-based emergence strategies with longer cycle lengths (evolutionary ratchet). Together, these mechanisms promote the evolution of long periodic life cycles and synchronous emergence in the Magicicada. We discuss how our results connect to previous theories and recent phylogenetic studies on Magicicada evolution.
Keywords: chronobiology; evolution; cicadas
Free keywords: periodicity; synchronous life cycle; individual-based simulation; Magicicada; temporally varying environments
Contributing organizations
Related projects
- Eläinten lisääntymisstrategioiden evoluu
- Fromhage, Lutz
- Research Council of Finland
Ministry reporting: Yes
Reporting Year: 2019
JUFO rating: 3