Publication Date:
2022-05-25
Description:
© The Author(s), 2018. This article is distributed under the terms of the Creative Commons Attribution License. The definitive version was published in Population Ecology 60 (2018): 21-36, doi:10.1007/s10144-018-0615-8.
Description:
Models of sexually-reproducing populations that consider only a single sex cannot capture the effects of sex-specific demographic differences and mate availability. We present a new framework for two-sex demographic models that implements and extends the birth-matrix mating-rule approach of Pollak. The model is a continuous-time matrix model that explicitly includes the processes of mating (which is nonlinear but homogeneous), offspring production, and demographic transitions and survival. The resulting nonlinear model converges to exponential growth with an equilibrium population composition. The model can incorporate age- or stage-structured life histories and flexible mating functions. As an example, we apply the model to analyze the effects of mating strategies (polygamy or monogamy, and mated unions composed of males and females, of variable duration) on the response to sex-biased harvesting. The combination of demographic complexity with the interaction of the sexes can have major population dynamic effects and can change the outcome of evolution on sex-related characters.
Description:
This work was supported by a National Science
Foundation Graduate Research Fellowship to ES, under Grant
1122374. HC acknowledges support from NSF Grants DEB1145017
and DEB1257545 and support from the European Research Council
under the European Union’s Seventh Framework Programme
(FP7/2007-2013), ERC Advanced Grant 322989. ES acknowledges
support from the Academic Programs office of the Woods Hole Oceanographic
Institution.
Keywords:
Birth matrix-mating rule
;
BMMR
;
Demography
;
Matrix population models
;
Sex-biased harvest
;
Two-sex models
Repository Name:
Woods Hole Open Access Server
Type:
Article
