Frequency-dependent two-sex models : a new approach to sex ratio evolution with multiple maternal conditions
MetadataShow full item record
KeywordAdaptive dynamics; Facultative sex ratios; Maternal condition; Matrix population models; Sex ratio evolution; Trivers-Willard hypothesis
Mothers that experience different individual or environmental conditions may produce different proportions of male to female offspring. The Trivers-Willard hypothesis, for instance, suggests that mothers with different qualities (size, health, etc.) will use different sex ratios if maternal quality differentially affects sex-specific reproductive success. Condition-dependent, or facultative, sex ratio strategies like these allow multiple sex ratios to coexist within a population. They also create complex population structure due to the presence of multiple maternal conditions. As a result, modeling facultative sex ratio evolution requires not only sex ratio strategies with multiple components, but also two-sex population models with explicit stage structure. To this end, we combine nonlinear, frequency-dependent matrix models and multidimensional adaptive dynamics to create a new framework for studying sex ratio evolution. We illustrate the applications of this framework with two case studies where the sex ratios depend one of two possible maternal conditions (age or quality). In these cases, we identify evolutionarily singular sex ratio strategies, find instances where one maternal condition produces exclusively male or female offspring, and show that sex ratio biases depend on the relative reproductive value ratios for each sex.
© The Author(s), 2016. This article is distributed under the terms of the Creative Commons Attribution License. The definitive version was published in Ecology and Evolution 6 (2016): 6855–6879, doi:10.1002/ece3.2202.
Suggested CitationEcology and Evolution 6 (2016): 6855–6879
The following license files are associated with this item:
Showing items related by title, author, creator and subject.
Shyu, Esther; Caswell, Hal (John Wiley & Sons, 2016-02-09)The evolution of the primary sex ratio, the proportion of male births in an individual's offspring production strategy, is a frequency-dependent process that selects against the more common sex. Because reproduction is ...
Table 2. Elemental ratios and partition coefficients for CaCO3 in deepsea conditions: Mg, S, Sr, and Ba between crystallized solids and fluid. Gabitov, Rinat; Borrelli, Chiara; Rogers, Karyn (Biological and Chemical Oceanography Data Management Office (BCO-DMO). Contact: email@example.com, 2020-04-09)Trace elements in CaCO3 and fluid. Table 2. Elemental ratios and partition coefficients for CaCO3 in deepsea conditions: Mg, S, Sr, and Ba between crystallized solids and fluid. For a complete list of measurements, refer ...
Stable isotope ratios and mass of carbon and nitrogen in Ulva cells under ocean acidification conditions (Seaweed OA Resilience project) Kubler, Janet E; Dudgeon, Steve (Biological and Chemical Oceanography Data Management Office (BCO-DMO). Contact: firstname.lastname@example.org, 2019-06-05)This dataset includes carbon and nitrogen content and stable isotope values from Ulva lactuca tissue grown at 15° C and various CO2 levels, from May 2015 through July 2015. For a complete list of measurements, refer ...