RE: The vanilla bean-evolutionary quandry
June 6, 2014 at 7:48 pm
(This post was last modified: June 6, 2014 at 8:09 pm by Rampant.A.I..)
(June 6, 2014 at 7:26 pm)professor Wrote: Co-evolution.....?
Those bees and vines sure were lucky to make themselves at exactly the same time.
Whoda thought.. Maybe a blind date?
Quote:co·ev·o·lu·tion
ˌkōevəˈlo͞oSHən,-ēvə-/
nounBIOLOGY
the influence of closely associated species on each other in their evolution.
Your argument assumes:
1. Evolution does not take place
2. Therefore the plant and bee have always been in the same form there are now.
The more likely scenario: The bee and food source co-evolved over a long period of time, thus appear in the form they are today.
The Vanilla Bean orchid is estimated to be 60-70 million years old. Do you think it might have changed in that amount of time?
Quote:Bees, the largest (>16,000 species) and most important radiation of pollinating insects, originated in early to mid-Cretaceous, roughly in synchrony with the angiosperms (flowering plants). Understanding the diversification of the bees and the coevolutionary history of bees and angiosperms requires a well supported phylogeny of bees (as well as angiosperms). We reconstructed a robust phylogeny of bees at the family and subfamily levels using a data set of five genes (4,299 nucleotide sites)http://www.pnas.org/content/103/41/15118.full
Do you think some of the 16,000 species bees may have adapted to the plants they evolved to feed from?