Sex Allocation Theory for Facultatively Sexual Organisms Inhabiting Seasonal Environments : The Importance of Bet Hedging
Gerber, N., Booksmythe, I., & Kokko, H. (2018). Sex Allocation Theory for Facultatively Sexual Organisms Inhabiting Seasonal Environments : The Importance of Bet Hedging. American Naturalist, 192(2), 155-170. https://doi.org/10.1086/697727
Julkaistu sarjassa
American NaturalistPäivämäärä
2018Oppiaine
Ekologia ja evoluutiobiologiaBiologisten vuorovaikutusten huippututkimusyksikköEcology and Evolutionary BiologyCentre of Excellence in Biological Interactions ResearchTekijänoikeudet
© 2018 by The University of Chicago.
Adaptive explanations for dormancy often invoke bet
hedging, where reduced mean fitness can be adaptive if it associates
with reduced fitness variance. Sex allocation theory typically ignores
variance effects and focuses on mean fitness. For many cyclical parthenogens,
these themes become linked, as only sexually produced
eggs undergo the dormancy needed to survive harsh conditions. We
ask how sex allocation and the timing of sex evolve when this constraint
exists in the form of a trade-off between asexual reproduction and sexual
production of dormant eggs—the former being crucial for within-season
success and the latter for survival across seasons. We show that male production
can be temporally separated from or co-occur with sex, depending
on whether direct (time) or indirect (population density) cues
of the season’s end are available and whether population growth is density
dependent. Sex generally occurs late in the season but is induced earlier in
unpredictable environments. When only indirect cues are available, the
temporal spread of sex, and with it the production of dormant stages, is
even larger and, given sufficient mortality, leads to endogenous population
cycles in which frequent sex coincides with high densities. In all
scenarios, algorithms maximizing geometric mean fitness have reduced
fitness variance compared with a hypothetical non–bet hedger, confirming
that the timing of male production and sex in facultative seasonal
settings can be bet-hedging traits
...
Julkaisija
University of Chicago PressISSN Hae Julkaisufoorumista
0003-0147Julkaisu tutkimustietojärjestelmässä
https://converis.jyu.fi/converis/portal/detail/Publication/28122838
Metadata
Näytä kaikki kuvailutiedotKokoelmat
Lisenssi
Samankaltainen aineisto
Näytetään aineistoja, joilla on samankaltainen nimeke tai asiasanat.
-
Spore production monitoring reveals contrasting seasonal strategies and a trade‐off between spore size and number in wood‐inhabiting fungi
Norros, Veera; Halme, Panu; Norberg, Anna; Ovaskainen, Otso (Wiley-Blackwell, 2023)Traits related to reproduction and dispersal drive the assembly and dynamics of species communities and can explain and predict how species respond to habitat loss and fragmentation and to the changing climate. For fungi, ... -
Adaptation to seasonality : genetics and variation in life-history traits important in overwintering
Tyukmaeva, Venera (2012)Adaptation to seasonal changes in environmental conditions is of crucial importance for species living at high latitudes. This involves not only tolerance to cold temperatures, but also an ability to timely predict the ... -
The importance of environmental microbes for Drosophila melanogaster during seasonal macronutrient variability
Davies, Lucy Rebecca; Loeschcke, Volker; Schou, Mads F.; Schramm, Andreas; Kristensen, Torsten N. (Nature Publishing Group, 2021)Experiments manipulating the nutritional environment and the associated microbiome of animals have demonstrated their importance for key fitness components. However, there is little information on how macronutrient composition ... -
Fungal trait‐environment relationships in wood‐inhabiting communities of boreal forest patches
Dawson, Samantha K.; Berglund, Håkan; Ovaskainen, Otso; Jonsson, Bengt G.; Snäll, Tord; Ottosson, Elisabet; Jönsson, Mari (Wiley-Blackwell, 2024)Fungal traits can provide a mechanistic understanding of how wood-inhabiting fungi interact with their environment and how that influences community assembly in deadwood. However, fungal trait exploration is relatively new ... -
Sex-specific assumptions and their importance in models of sexual selection
de Vries, Charlotte; Lehtonen, Jussi (Elsevier BV, 2023)Sexual selection is a field coloured by tension and contrasting views. One contested claim is the causal link from the definition of the sexes (anisogamy) to divergent selection on the sexes. Does theory truly engage with ...
Ellei toisin mainittu, julkisesti saatavilla olevia JYX-metatietoja (poislukien tiivistelmät) saa vapaasti uudelleenkäyttää CC0-lisenssillä.