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Anatidae (2 Viewers)

Nutcracker said:
Uggh! No thanks! Dozens of monotypic or very small genera doesn't help anyone!

Agree one can't use a timed cut-off for species; I was merely mentioning that the article authors don't recommend splitting them, and give timings for likely divergences.
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I agree. Splitting is not the solution, just keep two genera (Anser and Branta) In addition, many species still hybridize (and produce fertile offspring), which can be used as an argument to keep them in one genus.

See this paper: http://frontiersinzoology.biomedcentral.com/articles/10.1186/s12983-016-0153-1
And there is another genomics paper on geese coming soon ;)
 
Freedom of opinion. ;)

How many animals species belonging to distinct, but more or less close, genera can hybridize and give fertile offspring ?
 
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For taxonomy above the species level, I prefer to adhere to a rule of making the least amount of taxonomic changes, in order to minimize destabilizing nomenclature. In this case it would be better to lump two genera than be forced to recognize a bunch of different goose genera, many of which are monospecific or nearly so.
 
Mysticete said:
For taxonomy above the species level, I prefer to adhere to a rule of making the least amount of taxonomic changes, in order to minimize destabilizing nomenclature. In this case it would be better to lump two genera than be forced to recognize a bunch of different goose genera, many of which are monospecific or nearly so.
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Very wise! Particularly with Eubalaena indica being so easy to spell incorrectly B :)
 
Peter Kovalik said:
Jente Ottenburghs, Hendrik-Jan Megens, Robert H.S. Kraus, Ole Madsen, Pim van Hooft, Sipke E. van Wieren, Richard P.M.A. Crooijmans, Ronald C. Ydenberg, Martien A.M. Groenen, Herbert H.T. Prins. A Tree of Geese: A Phylogenomic Perspective on the Evolutionary History of True Geese. Molecular Phylogenetics and Evolution. In Press, Accepted Manuscript, Available online 24 May 2016.

[abstract]
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TiF Update May 26, 2016

Geese: I've updated the phylogeny of Anser and Branta based on Ottenburghs et al. (2016). Their calibrated phylogeny suggests that the two genus treatment is best. Their phylogeny does not combine well with Ruokonen and Aarvak (2011), rendering the position of Middendorf's Bean-Goose somewhat uncertain.
 
Peter Kovalik said:
TiF Update May 26, 2016

Geese: I've updated the phylogeny of Anser and Branta based on Ottenburghs et al. (2016). Their calibrated phylogeny suggests that the two genus treatment is best. Their phylogeny does not combine well with Ruokonen and Aarvak (2011), rendering the position of Middendorf's Bean-Goose somewhat uncertain.
Click to expand...

Yes, the position of the Middendorf's Bean Goose remains problematic. It was not included in the analysis of Ottenburghs et al. (2016). However, we are currently sampling this species in Russia to settle the issue.
 
Peter Kovalik said:
Jente Ottenburghs, Hendrik-Jan Megens, Robert H.S. Kraus, Ole Madsen, Pim van Hooft, Sipke E. van Wieren, Richard P.M.A. Crooijmans, Ronald C. Ydenberg, Martien A.M. Groenen, Herbert H.T. Prins. A Tree of Geese: A Phylogenomic Perspective on the Evolutionary History of True Geese. Molecular Phylogenetics and Evolution. In Press, Accepted Manuscript, Available online 24 May 2016.
Click to expand...
Ottenburghs, Megens, Kraus, Madsen, van Hooft, van Wieren, Crooijmans, Ydenberg, Groenen & Prins. 2016. A Tree of Geese: A Phylogenomic Perspective on the Evolutionary History of True Geese. Mol. Phylogenet. Evol. 101:303-313.
[pdf here]
 
Peter Kovalik said:
Jente Ottenburghs, Hendrik-Jan Megens, Robert H.S. Kraus, Ole Madsen, Pim van Hooft, Sipke E. van Wieren, Richard P.M.A. Crooijmans, Ronald C. Ydenberg, Martien A.M. Groenen, Herbert H.T. Prins. A Tree of Geese: A Phylogenomic Perspective on the Evolutionary History of True Geese. Molecular Phylogenetics and Evolution. In Press, Accepted Manuscript, Available online 24 May 2016.

[abstract]
Click to expand...

IOC Update Diary June 6

Merge Snow Goose, Ross’s Goose, Emperor Goose from Chen to Anser
 
Peter Kovalik said:
Nelson, Joel; Wilson, Robert; McCracken, Kevin; Cumming, Graeme; Joseph, L.; Guay, Patrick-Jean; Peters, Jeffrey. Divergence and gene flow in the globally distributed blue-winged ducks. Journal of Avian Biology, accepted article.
Click to expand...
Also -
Nelson. 2016. The genomics of speciation within the globally distributed blue-winged ducks. Master of Science thesis, Wright State University.
[pdf here]
 
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