http://www.sciencedirect.com/science/article/pii/S0003347299912150
I discuss certain points here in this paper which seem utterly wrong to me and also expres my disbelief at what all can get published. If i were to speak, game theory already developed quite nicely by 1960's was applied for the first time in biology in 1980's by Maynard Smith (that's why he is the father of biological game theory or something like that) and that too wrongly.
Seeing the lack of consistency for a long time is disheartening.
What were the reviewers doing.Or were they not trained in the subject.
Points to discuss:
1. "
Although Maynard Smith’s model has
been very influen-
tial, it cannot explain multiple
patterns of care."
Because it was wrong.
2.
"
There are
three obvious ways in which multiple
patterns of parental
care might appear. First, the ESS may
consist of mixed-
strategy behaviours, that is, either or
both of the parents
should desert with a probability
between one and zero.
Second, behaviour may be time dependent
with parents
changing their care decision during the
breeding season.
Third, there may be differences in
quality between indi-
viduals leading to different care
decisions being made
depending on the qualities of both
parents."
The first reason covers everything,by definition.
3.
"
In Maynard
Smith’s ‘model 2’: (1) there are
no mixed ESS solutions
since an individual’s behaviour can
depend on its sex,
and the payoffs for care and desertion
are fixed (Selten
1980; Maynard Smith 1982, page 107);
(2) it describes a
single, time-independent decision; and
(3) the individ-
uals in the population are identical."
Again the reasons are not necessary because he was wrong.
4.
“let us suppose that the population
is following the strat-
egy of female care and male desertion.
The condition for
male desertion to be optimal, given
that all females in the
population are caring (y=0) and all
males are deserting
(x=1), is V1 +rm(1,0)V2 >V2.
However, with rm(x,y) given
by equation (5) we have rm(1,0)=0 since
there are no
females available with which to mate.
Thus for uniparen-
tal care by the female to be an ESS, it
must be the case that
V1 >V2 which contradicts our
original assumption that
biparental care is better than
uniparental care. The failure
to satisfy the condition for
uniparental female care is due
to our choice of functions for the
remating probabilities.
”
They accept their mistake,in fact the whole formulation becomes wrong and still they continue talking about it.
5.
“If none of the females in the
population participated in
the first breeding attempt (for
example, because they had
not yet arrived on the breeding site),
then some females
may be available even though the number
of deserting
females is zero.
”
Who are you kidding?
If all females are caring,how the hell do you plan to get those additional females from. If from somewhere else,then sorry,your model has unknown elements coming in and going out which is terribly not acceptable.
Experiments cannot be always in experimenter's control but you cannot do that to a model.
6.
If Webb et al had chosen the matrix
payoffs carefully,they would have gotten exactly the same results as
our model 0.
And we wouldn't be doing that and reading it in their paper.
7."
In Appendix 2 we show that, in the standard replicator
dynamics (Taylor 1979), the corresponding polymorphic
populations with x* as the proportion of deserting
individuals are asymptotically stable under the same
conditions on V1/V2 as for the ESS solutions."
dynamics (Taylor 1979), the corresponding polymorphic
populations with x* as the proportion of deserting
individuals are asymptotically stable under the same
conditions on V1/V2 as for the ESS solutions."
Why should they be any different ?Finding ESS is same as finding the fixed points of certain game which is stable (asympotically).
Replicator dynamic kind of analysis is enough.
In ESS kind of analysis ,people directly compare payoffs of different strategies ,which is essentially the same for replicator dynamics except that it gives you an additional structure and also a mechanism to generate the whole game being played in real time. like you can monitor the allele frequency change by iterating the game.
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