Questions tagged [evolutionary-game-theory]
The application of dynamic systems and game theory to evolving populations in biology, economics, and social sciences. It is particularly well suited for studying social dilemmas like the evolution of cooperation and altruism.
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Do animals have greater tendency to care for their opposite sex siblings due to mate competition among same sex siblings?
According to the gene-centered view of evolution, siblings have p=1/2 relatedness, thus having greater altruism between them than cousins or unrelated animals.
For species with a conventional sex ...
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Games with non-uniform interaction rates
Background:
Many models in evolutionary game theory assume uniform interaction rates. For instance, consider the $2\times 2$ game:
\begin{array}{l c c}
& A & B \\
A & a & b \\
...
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What determines whether a trait brought out through sexual selection is transmitted only to offspring of the same sex or of both sexes?
First of all, let me apologize for my amateurishness. I have no background in biology. Please bear with me.
My question relates to sexual selection, or specifically its most prominent manifestations:
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Derivation of discrete replicator dynamics
Related: Discrete vs Continuous Replicator Dynamics
I am trying to perform a derivation of the discrete time replicator dynamics, but I am unable to get through Cressman's derivation in "Evolutionary ...
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How to understand relatedness in an infinite island model?
My understanding is that the relatedness coefficient in kin selection models measures positive assortment. That is, altruism is more likely to evolve if altruists tend to interact with other altruists....
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Genetic evolution without crossover
Can someone please point me to the origin of the system of coupled differential equations (1) in Section 2 of Shahshahani's book$^\star$?
$$ \dot{x}_i = x_i \sum_{j=1}^n m_{ij} \frac{x_j}{|x|} $$
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What is the necessary criterion for the maintenance of signaling honesty?
Zahavi's (1975, Journal of Theoretical Biology) handicap principle held that the cost associated with a signal is integral to ensuring that signal is accurate, since dishonest signals would be too ...
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Replicator equation for mixed strategies?
The the replicator equation is usually defined for pure strategies. More specifically, the replicator eqn for $n$ strategies is given by:
\begin{equation}
\dot x_{i} = x_{i} \left( \sum_{j=1}^{n} a_{...
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Does natural selection select for randomness in development?
In a podcast with Sean Carroll and Liv Boeree they discuss a result from game theory that the optimal strategy in the face of incomplete information can require random decision making. For example, ...
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Use numbers or algebra when introducing an evolutionary biology concept?
I'm working on an (approximately 20 pg) evolutionary biology paper for submission to a journal. The paper introduces a couple of strategies (I use "strategies" loosely; they can be carried out by ...
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Do we have information on differential reproductive success for many species?
It has been claimed that human males have a successful reproduction rate of about 40%, whereas females have 80%. This leads to the claim that we have about twice as many unique female ancestors as ...
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What is Hamilton's rule for multiple generations?
What is Hamilton's rule as it applies to multiple generations? Is it that the lineage success given up by the actor must be exceeded by the lineage success acquired times the relatedness between ...
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Can the value of heritability be greater than 1?
Heritability defined as genetic variance divided by total variance seems to be bounded between 0 and 1. However, I see a way of calculating heritability on this page (http://www.radford.edu/~rsheehy/...
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What are the different causes for a snail species to have chiral dimorphism or speciate into a new species of the opposite form?
One way for the snail species to have complete chiral dimorphism where one form is an identical mirror image of the other form is if one form can't reproduce with the other form and it's predator is a ...
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Why don't all organisms reproduce asexually?
According to a comment at Why are not all species hermaphrodites?, asexually reproducing species go extinct more easily. However, I don't think sexual reproduction is a true evolutionary stable ...
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Why are brightly coloured marine animals thought not to display aposematism?
There are many brightly coloured marine animals, such as fish, corals, sea stars, and octopodes. And yet Wikipaedia says it is thought that those colours don't serve to deter predators, while they do ...
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How did the double circulatory system evolve from the single circulatory system
I already learned how the mammal circulatory system (double circulatory system) evolved from the reptilian circulatory system. How did natural selection evolve the reptilian circulatory system and the ...
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Is there a program that demonstrates overall fitness will increase in a population overtime?
Of course this will not always be the case with environmental factors, but generally speaking. I'm searching for a program that shows evolution works from a statistical standpoint.
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Is there a way to measure the handicap principle?
The handicap principle is used as an explanation for some genetic traits, such as bright tails in male peacocks. However, it seems that this principle could be used to justify sexual selection of ...
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Tribes outside humanity
All humans are a group with common ancestry but some humans distinct themselves into sub-groups by "distinctive ancestry" and tend to ask other humans "where are you originally from&...
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Understanding the paper "Why war is a man's game"
I have read this article
https://royalsocietypublishing.org/doi/10.1098/rspb.2018.0975
but I don't understand the mathematics which tries to explain why war is male-exclusive. In which branch of ...
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Does parental conflict lead to genes combining important functions with functions only advantageous for one of the parents?
In a sitation of a mother-father conflict of interests, the mother might use epigenetics to turn off some genes only advantageous for the father's genes and not her own. I thought a logical father's ...
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Would Ants and Termites be considered r or K strategists?
My initial assumption is that most swarm species would fall under r strategists due to their prodigious number of offspring, but it also occurred to me that since worker types are non-propagating we ...
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What metric(s) is a good proxy for relatedness?
In attempting to seed a simulation, where an individual foregoes resources that go r to same-type individuals and (1-r) to all members (including same-type individuals). What commonly used metrics ...
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Are all fish that can live in either salt water or fresh water bigger than some critical size that is larger than the smallest of fish?
I cannot understand this answer. I don't know much about biology or have a lot of trouble recalling stuff from a university biology book I bought for a course I never took because it was so long ago ...
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