Can you provide me with a description of the evolution of symbiotic relationships?

Any examples will do- I just want to get a flavor for how these things come about.





Thanks in advance :)Can you provide me with a description of the evolution of symbiotic relationships?
look up evolution of yucca moth and yucca.


You will find helpful info on this website:


http://www.webpages.uidaho.edu/~pellmyr/鈥?/a>





It's a lot of pdf files you can read through. Start with reviews. This one might be a good start:


Pellmyr, O., J.N. Thompson, J. Brown %26amp; R.G. Harrison. 1996. Evolution of pollination and mutualism in the yucca moth lineage. American Naturalist 148:827-847.


download pdf from linked website.Can you provide me with a description of the evolution of symbiotic relationships?
A symbiotic relationship is a relationship between 2 organisms where both organisms benefit from the relationship. For example a whale usually has a lot of barnacles on it and certain fish swim along with the whale eating the barnacles of the whale. The whale benefits from this as the fish clean the barnacles of it and the fish benefit as they a sourc of food and sustenance.
Certain plants reliant upon a single specific species of insect for pollination purposes may have developed this mutualist, symbiotic relationship of dependency over an evolutionary timescale as the selective fitness of it's ancestral lineages was augmented by adaptations for increased attractiveness to insects. As gene pools became dominated by the selected adaptation for such increased attractiveness speciation would occur and in turn insects with adaptive mutations suited for the best extraction of nectar from one particular plant species or an attraction to a plant particularly rich in nectar would then become more numerous within their gene pool. Thusly two species could become co-evolved and selection would favour greater and greater specialist adaptations for pollination and for nutrient extraction to the point where one particular species of plant and one particular species of insect may become completely co-dependent for survival.





This is a purely 'mutualist' symbiotic and dependent relationship, the intermediary stages in between would still be symbiotic relationships albeit less specialised and the degree of dependency may not necessarily have to the same for each species. I'm afraid as I'm not a biologist I couldn't really tell you what plants and what insects, but everyone knows bees collect nectar and in turn aid in the reproductive process of pollination between male and female plants.
in symbiotic relationships the algal partner and the fungus partner are preset together the algal patner provide food to the fungus partner and the fungus partner stick with the algal partner to the substratum and do not allow the algal partner to fly away
napoleon and josephine.
My mother is a living organism, and I'm evolved from her womb. =D


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