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Richard Klim Sunday 11th August 2013 07:21

Amazilia hummingbirds
 
Ornelas, González, Espinosa de los Monteros, Rodríguez-Gómez & García-Feria (in press). In and out of Mesoamerica: temporal divergence of Amazilia hummingbirds pre-dates the orthodox account of the completion of the Isthmus of Panama. J Biogeogr. [abstract] [supp info]

Richard Klim Monday 12th August 2013 07:21

TiF
 
John Boyd (TiF):
www.jboyd.net/Taxo/changes.html (12 Aug 2013)
www.jboyd.net/Taxo/List5.html#trochilidae

Richard Klim Tuesday 14th October 2014 10:26

Ornelas et al 2014 pdf
 
Free access: J Biogeogr 41(1): 168–181. [pdf]

Richard Klim Tuesday 17th March 2015 10:54

Violet-crowned & Green-fronted Hummingbirds
 
Rodríguez-Gómez & Ornelas (in press). At the passing gate: past introgression in the process of species formation between Amazilia violiceps and A. viridifrons hummingbirds along the Mexican Transition Zone. J Biogeogr. [abstract] [supp info]

HBW Alive:

Richard Klim Tuesday 12th January 2016 10:07

Mesoamerica
 
Jiménez & Ornelas 2016. Historical and current introgression in a Mesoamerican hummingbird species complex: a biogeographic perspective. PeerJ 4: e1556. [article & pdf]
Quote:

Our results ... confirm that Central American A. saucerottei hoffmanni and A. saucerottei subspecies from South America (warscewiczi, saucerottei, braccata) are two different taxa with considerable genetic divergence. Thus, our results and those of McGuire et al. (2014) suggest that they belong to different groups of Amazilia species, and support the proposal of Stiles & Skutch (1989) that the Central American A. saucerottei hoffmanni is a different species (A. sophiae) based on notorious behavioural and vocal differences.
  • Blue-vented Hummingbird - Amazilia (saucerottei) hoffmanni
HBW Alive:
Quote:

Remarkably isolated race hoffmanni sometimes considered to represent a distinct species on basis of behaviour and voice, in addition to distribution; this taxon formerly listed as Saucerottia sophiae.

Peter Kovalik Wednesday 22nd March 2017 09:56

Amazilia hoffmanni
 
Quote:

Originally Posted by Richard Klim (Post 3339617)
Jiménez & Ornelas 2016. Historical and current introgression in a Mesoamerican hummingbird species complex: a biogeographic perspective. PeerJ 4: e1556. [article & pdf]
  • Blue-vented Hummingbird - Amazilia (saucerottei) hoffmanni
HBW Alive:

IOC Updates Diary Mar 21 Accept Blue-vented Hummingbird

Peter Kovalik Friday 9th February 2018 20:59

Amazilia violiceps and A. viridifrons
 
Rodríguez-Gómez, Flor; Ornelas, Juan. Genetic structuring and secondary contact in the white-chested Amazilia hummingbird species complex. Journal of Avian Biology, Recently accepted articles.

Abstract:

Pleistocene climate cycles have been recognized to be a major driver of postglacial northward range expansion of North American bird populations. During glacial maxima, allopatric lineages that were reproductively isolated might have come into secondary contact with one another during expansion periods and the genetic signatures of past hybridization as a result of secondary contact events should produce detectable hybrid zones. The white-chested hummingbirds, Amazilia violiceps and A. viridifrons, constitute a species complex showing phenotypic similarity across its range. One exception is the subspecies found in the Central Depression of Chiapas (A. viridifrons villadai), which shares some plumage traits with the endemic but allopatric green-fronted populations in Oaxaca. Phylogenetic relationships, taxonomy and species limits among violiceps, viridifrons and villadai have been controversial for decades. We assessed genetic structure of populations and introgression in this species complex by analysing 95 individuals at ten nuclear microsatellites and morphology. Bayesian analysis yielded four clusters. However, only two clusters generally match previously described mtDNA haplogroups, one parental taxon in the south (villadai) and a cluster with two admixed taxa (viridifrons and violiceps) that cannot be attributed to any pure parental population. High genetic admixture was recorded in the violiceps/viridifrons range, probably as a consequence of a postglacial northern expansion of violiceps. Signs of admixture and gene flow between violiceps/viridifrons and villadai were low. Historical and contemporary migration rates and Approximate Bayesian computations support a scenario of divergence with gene flow: a Pleistocene basal split separating A. violiceps and the other two clades are derived from a second split (villadai and viridifrons) or from a merger of violiceps and villadai into viridifrons due to gene flow.

Peter Kovalik Wednesday 14th February 2018 06:19

Quote:

Originally Posted by Peter Kovalik (Post 3676492)
Rodríguez-Gómez, Flor; Ornelas, Juan. Genetic structuring and secondary contact in the white-chested Amazilia hummingbird species complex. Journal of Avian Biology, Recently accepted articles.

Abstract:

Pleistocene climate cycles have been recognized to be a major driver of postglacial northward range expansion of North American bird populations. During glacial maxima, allopatric lineages that were reproductively isolated might have come into secondary contact with one another during expansion periods and the genetic signatures of past hybridization as a result of secondary contact events should produce detectable hybrid zones. The white-chested hummingbirds, Amazilia violiceps and A. viridifrons, constitute a species complex showing phenotypic similarity across its range. One exception is the subspecies found in the Central Depression of Chiapas (A. viridifrons villadai), which shares some plumage traits with the endemic but allopatric green-fronted populations in Oaxaca. Phylogenetic relationships, taxonomy and species limits among violiceps, viridifrons and villadai have been controversial for decades. We assessed genetic structure of populations and introgression in this species complex by analysing 95 individuals at ten nuclear microsatellites and morphology. Bayesian analysis yielded four clusters. However, only two clusters generally match previously described mtDNA haplogroups, one parental taxon in the south (villadai) and a cluster with two admixed taxa (viridifrons and violiceps) that cannot be attributed to any pure parental population. High genetic admixture was recorded in the violiceps/viridifrons range, probably as a consequence of a postglacial northern expansion of violiceps. Signs of admixture and gene flow between violiceps/viridifrons and villadai were low. Historical and contemporary migration rates and Approximate Bayesian computations support a scenario of divergence with gene flow: a Pleistocene basal split separating A. violiceps and the other two clades are derived from a second split (villadai and viridifrons) or from a merger of violiceps and villadai into viridifrons due to gene flow.

Accepted manuscript online: 12 February 2018

Taphrospilus Wednesday 7th March 2018 09:37

I have a general question about A. wagneri. Here p. 122 of 154 is written about

Taxonomy of the Green-fronted Hummingbird (Amazilia viridifrons) complex using mtDNA. GABRIELA M. GARCÍA-DERAS, BLANCA E. HERNÁNDEZ-BAÑOS and ADOLFO G. NAVARRO, Museo de Zoología, Fac.de Ciencias, Univ. Nacional Autónoma de México, Mexico City, Mexico.

Was that ever published?


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