Multiple‐batch spawning as a bet‐hedging strategy in highly stochastic environments : an exploratory analysis of Atlantic cod
Hočevar, S., Hutchings, J. A., & Kuparinen, A. (2021). Multiple‐batch spawning as a bet‐hedging strategy in highly stochastic environments : an exploratory analysis of Atlantic cod. Evolutionary Applications, 14(8), 1980-1992. https://doi.org/10.1111/eva.13251
Published inEvolutionary Applications
DisciplineAkvaattiset tieteetAquatic Sciences
© 2021 the Authors
Stochastic environments shape life‐history traits and can promote selection for risk‐spreading strategies, such as bet‐hedging. Although the strategy has often been hypothesised to exist for various species, empirical tests providing firm evidence have been rare, mainly due to the challenge in tracking fitness across generations. Here, we take a ‘proof of principle’ approach to explore whether the reproductive strategy of multiple‐batch spawning constitutes a bet‐hedging. We used Atlantic cod (Gadus morhua) as the study species and parameterised an eco‐evolutionary model, using empirical data on size‐related reproductive and survival traits. To evaluate the fitness benefits of multiple‐batch spawning (within a single breeding period), the mechanistic model separately simulated multiple‐batch and single‐batch spawning populations under temporally varying environments. We followed the arithmetic and geometric mean fitness associated with both strategies and quantified the mean changes in fitness under several environmental stochasticity levels. We found that, by spreading the environmental risk among batches, multiple‐batch spawning increases fitness under fluctuating environmental conditions. The multiple‐batch spawning trait is, thus, advantageous and acts as a bet‐hedging strategy when the environment is exceptionally unpredictable. Our research identifies an analytically flexible, stochastic, life‐history modelling approach to explore the fitness consequences of a risk‐spreading strategy and elucidates the importance of evolutionary applications to life‐history diversity. ...
ISSN Search the Publication Forum1752-4571
Publication in research information system
MetadataShow full item record
Showing items with similar title or keywords.
Multiple-batch spawning : a risk-spreading strategy disarmed by highly intensive size-selective fishing rate Hočevar, Sara; Hutchings, Jeffrey A.; Kuparinen, Anna (The Royal Society, 2022)Can the advantage of risk-managing life-history strategies become a disadvantage under human-induced evolution? Organisms have adapted to the variability and uncertainty of environmental conditions with a vast diversity ...
Atlantic cod recovery from the Allee effect zone : contrasting ecological and evolutionary rescue Kuparinen, Anna; Uusi-Heikkilä, Silva (Wiley-Blackwell, 2020)The ability of a population to recover from disturbances is fundamental for its persistence. Impaired population recovery might be associated with a demographic Allee effect. Immigration from adjacent populations could ...
Disentangling conditional effects of multiple regime shifts on Atlantic cod productivity Perälä, Tommi; Olsen, Esben M.; Hutchings, Jeffrey A. (Public Library of Science, 2020)Regime shifts are increasingly prevalent in the ecological literature. However, definitions vary and detection methods are still developing. Here, we employ a novel statistical algorithm based on the Bayesian online ...
Measuring phenotypes in fluctuating environments Burton, Tim; Lakka, Hanna‐Kaisa; Einum, Sigurd (Wiley-Blackwell, 2020)Despite considerable theoretical interest in how the evolution of phenotypic plasticity should be shaped by environmental variability and stochasticity, how individuals actually respond to these aspects of the environment ...
Responses to Developmental Temperature Fluctuation in Life History Traits of Five Drosophila Species (Diptera: Drosophilidae) from Different Thermal Niches Manenti, Tommaso; Kjærsgaard, Anders; Munk Schou, Toke; Pertoldi, Cino; Moghadam, Neda N.; Loeschcke, Volker (MDPI AG, 2021)Temperature has profound effects on biochemical processes as suggested by the extensive variation in performance of organisms across temperatures. Nonetheless, the use of fluctuating temperature (FT) regimes in laboratory ...