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The National Agricultural Library is one of four national libraries of the United States, with locations in Beltsville, Maryland and Washington, D.C. It houses one of the world's largest and most accessible agricultural information collections and serves as the nexus for a national network of state land-grant and U.S. Department of Agriculture field libraries. In fiscal year 2011 (Oct 2010 through Sept 2011) NAL delivered more than 100 million direct customer service transactions.

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Journal Article

Journal Article

Morphological, behavioural and genetic differentiation within the Horned Parakeet (Eunymphicus cornutus) and its affinities to Cyanoramphus and Prosopeia  [2008]

Boon, Wee-Ming; Robinet, Olivier; Rawlence, Nicolas; Bretagnolle, Vincent; et al.

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We revise the taxonomy of the two parakeet taxa in the psittaciform genus Eunymphicus - E. cornutus cornutus (Horned Parakeet) and E. c. uvaeensis (Ouvéa Parakeet) - which are restricted to New Caledonia and the Loyalty Islands, in the south-western Pacific, and we investigate their relationship with the genera Cyanoramphus, considered traditionally as its closest related genus, and Prosopeia. We used three sets of characters to assess the level of differentiation between the Eunymphicus taxa: behaviour (vocalisations), morphology (biometrics and plumage coloration) and genetic (mitochondrial cytochrome b DNA sequence variation, 924 nucleotides). The analysis of vocalisations revealed significant differences, as did morphological analyses (size and number of feathers of the crest, size of the bill, and colour pattern of the head). Genetic distance between the Horned and Ouvéa Parakeets is similar to that recorded between closely related species of Cyanoramphus and both taxa possess novel and diagnostic synapomorphic substitutions. From these genetic, behavioural and morphological data, the two Eunymphicus taxa should be considered separate species, a suggestion that is supported by ecological data as well as anecdotal data on hybridisation from captive birds. Our molecular data also support the traditional view that Cyanoramphus is the closest relative of Eunymphicus, with Prosopeia a sister group to this clade. The consistency with which Platycercus clust
ers next to the Cyanoramphus-Eunymphicus-Prosopeia grouping suggests that Platycercus may well be the next closest relative of this clade.
From the journal
Emu
ISSN : 0158-4197

Bibliographic information

Language:
English
Type:
Journal Article
In AGRIS since:
2013
Volume:
108
Issue:
3
Start Page:
251
End Page:
260
Publisher:
Collingwood, Victoria: CSIRO Publishing
All titles:
"Morphological, behavioural and genetic differentiation within the Horned Parakeet (Eunymphicus cornutus) and its affinities to Cyanoramphus and Prosopeia"@eng
Other:
"Includes references"
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Bibliographic information

Language:
English
Type:
Journal Article
In AGRIS since:
2013
Volume:
108
Issue:
3
Start Page:
251
End Page:
260
Publisher:
Collingwood, Victoria: CSIRO Publishing
All titles:
"Morphological, behavioural and genetic differentiation within the Horned Parakeet (Eunymphicus cornutus) and its affinities to Cyanoramphus and Prosopeia"@eng
Other:
"Includes references"