Cichlid's sister lineage and a new group name

New cichlid species and taxonomy

Cichlid's sister lineage and a new group name

Postby Nothonotus » Fri Jun 29, 2012 8:33 am

Hey all,

I wanted to share a new publication based on DNA sequence data that finds cichlids are most closely related to Pholidichthys (Convict/Engineer gobies) and that these are a part of a larger group of fishes with adhesive eggs with chorionic filaments with a new name, Ovalentaria. The cool finding of this paper is that pharyngognathy, having pharyngeal jaws, has evolved multiple times. Pharyngognathy is one of the evolutionary 'innovations' that people cite as being at least partially responsible for the extreme diversity seen in fish groups like cichlids and labrids (Wrasses).

The abstract:
http://sysbio.oxfordjournals.org/content/early/2012/06/27/sysbio.sys060.abstract

I have a pdf of the 'in press' version, but it's over 7mb. The final, journal formatted version won't be available for a while.

Enjoy,

Ben
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Re: Cichlid's sister lineage and a new group name

Postby michi tobler » Fri Jun 29, 2012 8:49 am

Nice! Thanks for posting, Ben! What a great example of convergence causing misleading signals for phylogenetic analysis and taxonomy!
Cheers, m
Humans are not the pinnacle of evolutionary progress but only an aberrant side branch of fish evolution - Moyle

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Re: Cichlid's sister lineage and a new group name

Postby Florent » Fri Jun 29, 2012 10:04 am

Thanks !
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Re: Cichlid's sister lineage and a new group name

Postby Bojan Dolenc » Fri Jun 29, 2012 12:07 pm

interesting I found this fish (from my marine aquarium) immediately mentioned specifically in my heart, it's no wonder it is from the right family!
Change in habit, producing change of function, is the main cause of the production of change in living structure. F. Wood Jones (1953) Trends of life
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