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Author Topic:   What is your favorite example of speciation?
Denesha
Inactive Member


Message 2 of 15 (94756)
03-25-2004 4:19 PM
Reply to: Message 1 by Parsimonious_Razor
03-25-2004 4:14 PM


Hi Parsi,
I have numerous examples. Are fossil fishes good enough for our debate?
I currently study such events.
Denesha

This message is a reply to:
 Message 1 by Parsimonious_Razor, posted 03-25-2004 4:14 PM Parsimonious_Razor has replied

Replies to this message:
 Message 3 by Parsimonious_Razor, posted 03-25-2004 4:28 PM Denesha has replied

  
Denesha
Inactive Member


Message 7 of 15 (95541)
03-29-2004 2:25 AM
Reply to: Message 3 by Parsimonious_Razor
03-25-2004 4:28 PM


Ah yes, got it now! It's cladogenesis examples your seeking for.
If so, they are very rare to observe on fishes. I have one, and this is currently out for publication.
Most of my concerned fish speciations are "classic" gradual anagenesis.
Denesha

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 Message 3 by Parsimonious_Razor, posted 03-25-2004 4:28 PM Parsimonious_Razor has not replied

  
Denesha
Inactive Member


Message 9 of 15 (95867)
03-30-2004 4:43 AM
Reply to: Message 8 by MannyB
03-29-2004 10:54 AM


I think your "Lead plants" are evidence of adaptation but not yet speciation. Nothing needs to change in the genetic material.
It's similar with people living in high altitude currently, and are adapted but genetic is not concerned. I we are able to observe this for a long time AND the gene flow will be firmly cancelled between high mountain and "downstair people", you might see the first signs of a speciation uprising in a few hundred thousand years...
Speciation is long for human but short for the geologic time-scale.
Denesha

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 Message 10 by MannyB, posted 03-30-2004 7:05 AM Denesha has replied

  
Denesha
Inactive Member


Message 11 of 15 (95879)
03-30-2004 7:27 AM
Reply to: Message 10 by MannyB
03-30-2004 7:05 AM


Hybrids
Hybrids doesn't work very well. There is a discrepancy between both genetic material of the two species.
Classic natural hybrids exist. The Blasius newt is famous here.
In fact, it's just a hybrid, not a species.
If you prefer, a breeding misfit.
Have a look here:
http://www.darkwave.org.uk/~caleb/trispe.html
Denesha

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