Paper: Limiting cheaters in mutualism - evidence from



"Robert Karl Stonjek" rstonjek@xxxxxxxxxxxxxx contributed:

> Subject: Paper: Limiting cheaters in mutualism - evidence from
> hybridization between mutualist and cheater yucca moths
> Organization:
>
> Limiting cheaters in mutualism: evidence from hybridization between
> mutualist and cheater yucca moths
>
> Kari A. Segraves A1, David M. Althoff A1, Olle Pellmyr (A1)
> (A1) University of Idaho Department of Biological Sciences Moscow, ID
> 83844-3051, USA
>
> Abstract:
> Mutualisms are balanced antagonistic interactions where both species gain
> a
> net benefit. Because mutualisms generate resources, they can be exploited
> by
> individuals that reap the benefits of the interaction without paying any
> cost. The presence of such 'cheaters' may have important consequences, yet
> we are only beginning to understand how cheaters evolve from mutualists
> and
> how their evolution may be curtailed within mutualistic lineages. The
> yucca-yucca moth pollination mutualism is an excellent model in this
> context
> as there have been two origins of cheating from within the yucca moth
> lineage. We used nuclear and mitochondrial DNA markers to examine genetic
> structure in a moth population where a cheater species is parapatric with
> a
> resident pollinator. The results revealed extensive hybridization between
> pollinators and cheaters. Hybrids were genetically intermediate to
> parental
> populations, even though all individuals in this population had a
> pollinator
> phenotype. The results suggest that mutualisms can be stable in the face
> of
> introgression of cheater genes and that the ability of cheaters to invade
> a
> given mutualism may be more limited than previously appreciated.

JE:-
Robert is always working hard to provide sbe reader's with up to date
references. Again, thank you Robert!

It has always been my contention that mutualism totally dominates the
evolution of sociality within nature including eusociality. However, over
the last 50 years or so Hamilton's Rule has focused Neo Darwinistic research
almost entirely on just false propositions of organism fitness altruism
(OFA) acting within nature. Because Hamilton's Rule has no fitness frame of
reference (no constant term) it cannot distinguish between organism fitness
selfishness (OFS) and OFA. The net result is that organism fitness mutualism
(OFM) has become hopelessly confused with OFA creating one unholy
mess. In reality, OFM cannot even be addressed by Hamilton's Rule so
mutualism remains entirely ignored within gene centric Neo Darwinism.

Regards,

John Edser
Independent Researcher

edser@xxxxxxxxxx








.

Relevant Pages
Quantcast