Appendix B from J . M . Henshaw et al . , “ Local Gamete Competition Explains Sex Allocation
نویسنده
چکیده
In the robustness analysis, we generated parameter values randomly for each trial. Here we present the range of values from which each parameter was chosen (table B1). We also justify our choice of ranges for scaling exponents. These exponents determine the allometric relationships between body size, population density, and pumping ability and between egg size and fertilization efficiency. Lastly, we consider two parameters that were not varied randomly: the gamete budget coefficient kM and the volume of a fertilization cavity Vc.
منابع مشابه
Local gamete competition explains sex allocation and fertilization strategies in the sea.
Within and across taxa, there is much variation in the mode of fertilization, that is, whether eggs and/or sperm are released or kept inside or on the surface of the parent's body. Although the evolutionary consequences of fertilization mode are far-reaching, transitions in the fertilization mode itself have largely escaped theoretical attention. Here we develop the first evolutionary model of ...
متن کاملSkewed paternity and sex allocation in hermaphroditic plants and animals.
Models predict a reduced allocation to sperm when females preferentially use one of two males' sperm and the males do not know who is favoured. An analogous discounting occurs in plants when their paternity success is skewed by random, non-heritable factors such as location in the population and pollinator behaviour. We present a model that shows that skewed paternity can affect the sex allocat...
متن کاملAppendix 1 List of fossils, described as new by Senowbari-Daryan et al. from the Permian and Mesozoic of Iran
متن کامل
نقش محافظتی استروژن و پروژسترون بر بافت معدی به دنبال ایسکمی- رپرفیوژن معدی در موشهای صحرایی نر
Background and Objective: Ischemia-reperfusion (I/R) injury repeatedly occurs in situations such as surgery, hemorrhage, burns, trauma, and infection. It has also been found that females were more resistant than males, indicating that female sex hormones have a protective function. The aim of this study was to determine the role of estrogen, progesterone, and their combination in protecting the...
متن کاملDirect reciprocity stabilizes simultaneous hermaphroditism at high mating rates: A model of sex allocation with egg trading.
Simultaneous hermaphroditism is predicted to be unstable at high mating rates given an associated increase in sperm competition. The existence of reciprocal egg trading, which requires both hermaphroditism and high mating rates to evolve, is consequently hard to explain. We show using mathematical models that the presence of a trading economy creates an additional fitness benefit to egg product...
متن کامل