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Anatidae (1 Viewer)

"If Orinoco Goose and Andean Goose are considered congeners, the generic name Oressochen Bannister, 1870 (type = melanopterus) has priority for the new arrangement."
Here is Bannister:
http://www.biodiversitylibrary.org/item/18247#page/138/mode/1up .
A review of Bannister by Coues:
http://www.biodiversitylibrary.org/item/127030#page/256/mode/1up .
OD of A. melanopterus:
http://www.biodiversitylibrary.org/item/111070#page/143/mode/1up .
Picture of A. jubatus:
http://www.biodiversitylibrary.org/item/128667#page/333/mode/1up
 
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Eliason, Maia & Shawkey (in press). Modular color evolution facilitated by a complex nanastructure in birds. Evolution. [abstract] [supp info]

I rather like the idea of 'nanastructure' - it offers many possibilities, perhaps, given the emphasis on Anatidae on this thread - surely 'nenestructure' would refer to the genetic bottleneck in the Hawaiian Goose population?:-O
MJB
 
I rather like the idea of 'nanastructure' - it offers many possibilities, perhaps, given the emphasis on Anatidae on this thread - surely 'nenestructure' would refer to the genetic bottleneck in the Hawaiian Goose population?:-O
Oops, my mistake when changing upper to mixed case. Should have used Word to convert! (Just out of surgery, and I think I was still semi-anaesthetised.) Corrected, with apologies to Eliason et al...
 
If Orinoco Goose and Andean Goose are considered congeners, the generic name Oressochen Bannister, 1870 (type = melanopterus) has priority for the new arrangement.

Proposal (637) to SACC:

Note from Vitor Piacentini: The Andean Goose ("Chloephaga" melanoptera) is the type species [by monotypy] of Oressochen Bannister, 1870, whereas the Orinoco Goose is the type of Neochen Oberholser, 1918. It is thus clear that, if both species are to be treated in a single genus of their own, the valid name of such genus is Oressochen.
 
Grey Teal x Pacific Black Duck hybridisation

Guay, Monie, Robinson & van Dongen (in press). What the direction of matings can tell us of hybridisation mechanisms in ducks. Emu. [abstract]
 
Wigeons

Several authors, e.g. BLI, IUCN, H&M, BLI & HBW Illustrated Checklist support Mareca as distinct genus. Is there any paper which confirmed that Mareca is indeed distinct from Anas?
 
"Is there any paper which confirmed that Mareca is indeed distinct from Anas?"
SACC notes say:
Livezey (1991) advocated resurrection of genus Mareca for the wigeon + Holarctic Anas strepera and Palearctic A. falcata, representing a return to the classification of Pinto (1938), Hellmayr & Conover (1948a), and Phelps & Phelps (1958a). Mareca was merged into Anas following Delacour & Mayr (1945) and Johnsgard (1965). Genetic data (Johnson & Sorenson 1999) confirm that Mareca is monophyletic but also suggest that the resurrection of Mareca might make Anas a paraphyletic genus (see also Eo et al. 2009). Peters et al. (2005) found that A. sibilatrix, not Old World A. penelope as in traditional and morphology-based (e.g., Livezey 1991) classifications, is the sister to A. americana. Dickinson & Remsen (2013), followed by del Hoyo & Collar (2014), resurrected Mareca based on the data in Gonzalez et al. (2009).
 
It all depends what you call "distinct", and what you call "Anas".

Based on mtDNA (e.g., Gonzalez et al. [password-protected pdf]), Anas in the broad sense does not appear clearly distinct from the South American group composed of Amazonetta, Speculanas, Lophonetta and Tachyeres. Within Anas, three subgroups exist: one made of the Siberian Teal alone, another which groups the blue-winged ducks and allies (the shovelers and Blue-winged/Cinnamon Teals, Garganey, Hottentot Teal, the Puna Teal group), and a last one with the remaining species. The two first subgroups may be closer to the South American taxa than to the last subgroup. Within this last subgroup, Mareca is sister to the rest. If we want to retain the South American taxa in distinct genera, and if we accept mtDNA as sufficient evidence, then we should probably recognise distinct genera for, at least, the three main subgroups of Anas s.l.: Sibirionetta for Siberian Teal, Spatula for the blue-winged ducks and allies, Anas for the third group. And if we do this, then we might arguably as well separate Mareca form the rest of this third group, because it still seems more distant ("distinct") from this Anas sensu strictiore than the four South American small genera are from one another.

That being said...

- Not all genes actually agree with what the mtDNA suggests, and the results remain, I think, somewhat ambiguous. E.g., Bulgarella et al. 2010 [pdf], in a multi-gene analysis, recovered the South American group outside of Anas in the broad sense. Support was admittedly poor, but this shows that there is, at least, room for doubt about the claimed paraphyly of Anas sensu lato.
- Holt and Jønsson 2014 [pdf] provided an "analysis of the overall levels of consistency within current higher taxonomic ranks using dated phylogenies for all bird", and their results (see the first of their supplementary file [here]) suggested that, to make classification consistent across birds as a whole, the South American group might better be included in the same genus as all Anas spp.
 
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Mareca

Based on mtDNA (e.g., Gonzalez et al. [password-protected pdf]),...
H&M4...
MARECA ... Recognition based on molecular distance in Fig. 1 in Gonzalez et al. (2009).
Without posting Prof Wink's not-very-cryptic password...

Gonzalez, Düttmann & Wink 2009. Phylogenetic relationships based on two mitochondrial genes and hybridization patterns in Anatidae. J Zool 279(3): 310–318. [supp info] – includes Fig 1.
 
Craniolingual morphology

Li & Clarke (in press). The craniolingual morphology of waterfowl (Aves, Anseriformes) and its relationship with feeding mode revealed through contrast-enhanced X-ray computed tomography and 2D morphometrics. Evol Biol. [abstract & preview]
 
Reeber 2015

Btw, this Christopher Helm ID guide is due for publication in Nov 2015...
Species-level taxonomy, wrt major world checklists...

Recognised as distinct species:
  • Green-winged Teal Anas [crecca] carolinensis
  • White-winged Scoter Melanitta [fusca] deglandi
  • Siberian Scoter Melanitta [fusca] stejnegeri
Not recognised as distinct species:
  • Tundra Bean Goose Anser (fabalis) serrirostris
  • American Comb Duck Sarkidiornis (melanotos) sylvicola
  • Mexican Duck Anas (platyrhynchos) diazi
  • Andean Duck Oxyura (jamaicensis) ferruginea
 
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Reeber 2015

I suspect I won't be getting this book...
Given that Bloomsbury has already reduced its price from £35 to £19.25 (for a 656-page hardback!), presumably it hasn't attracted many orders...
...how do they treat the Canada Goose complex?
As per IOC, eBird/Clements, H&M4, HBW/BirdLife...
  • Cackling Goose Branta [canadensis] hutchinsii (incl taverneri, minima, leucopareia)
  • Canada Goose Branta [canadensis] canadensis (other sspp)
 
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