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Optimal Sex Ratios in Structured Populations

✍ Scribed by JOSIANE COURTEAU; SABIN LESSARD

Publisher
Elsevier Science
Year
2000
Tongue
English
Weight
222 KB
Volume
207
Category
Article
ISSN
0022-5193

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✦ Synopsis

In this paper, we develop a general method to determine evolutionary equilibrium sex ratios and to check evolutionary stability, continuous stability and invadability in exact genetic models with or without dominance. This method is then applied to three kinds of models for structured populations: the "rst one concerns Hamilton's LMC model, except that only a fraction of female o!spring mate with male o!spring born in the same colonies, while a fraction 1! mate with male o!spring chosen at random within the whole population; in the second model, it is assumed that partial dispersal of inseminated females occurs after mating; in the third model, partial dispersal of male and female o!spring occurs before mating.

In the "rst model, the e!ect of population regulation is studied while, in the other models, two kinds of dispersal are considered: proportional and uniform.

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