[Taxacom] Columbiformes, ghost moths, Madagascar, etc.

[Lynn Raw]

BTW, have you seen this paper  http://sysbio.oxfordjournals.org/content/56/4/656.full.pdf

Lynn

On 24 May 2011, at 22:33, Kenneth Kinman wrote:

> Hi Michael,  
>       (1)  I wasn't suggesting that the fossa could have eliminated
> Columba on its own, but along with other predators (like the mongooses,
> civet, etc.).  And again, I suggest that it wasn't necessary to
> eliminate a well-established Columba species if the predators simply
> prevented the population from being well-established in the first place
> (nipping the population in the bud, so the speak).             
>     (2) Yes, I think there are plenty of cases of vicariance explaining
> the distribution of taxa, instead of dispersal.  The New Zealand wrens
> that we discussed is a great example.  But Madagascar became isolated
> much earlier than New Zealand, so I think the vertebrate fauna of
> Madagascar (especially mammals and birds) is much more the result is
> dispersal.  I would expect more vicariance among the other vertebrate
> groups which have been around longer (Jurassic or earlier).  
>         -------Ken               
> --------------------------------------------------------
> Michael wrote:      
>     The fossa may possibly have eliminated Columba from Madagascar, but
> Columba thrives in Africa where there are many different kinds of cats -
> five families of feliforms as opposed to just one (branching halfway up
> the phylogeny) on Madagascar - and it's hard to imagine that the fossa
> could wipe out Columba when these have not. 
>   
> Are there any areas or patterns where you accept a vicariance
> explanation for many of the groups? In most patterns the clades involved
> all show different degres of differentiation, so in an evolutionary
> clock model there cannot have been vicariance. This seems to be quite
> good evidence against a clock model. 
>   
> 
> 
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