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Topic: Thalassornis

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Thalassornis leuconotus

Whistling duck

Anatidae

Oriental White eye

Vidua

Megapodidae

Dendrocygna

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	White-backed Duck - Wikipedia, the free encyclopedia
		The White-backed Duck (Thalassornis leuconotus) is a waterbird of the family Anatidae.
		Their habitat consists of lakes, ponds, swamps and marshes where they are well camouflaged against predators.
		There are two subspecies, Thalassornis leuconotus leuconotus and Thalassornis leuconotus insularis.
	en.wikipedia.org /wiki/Thalassornis (218 words)

	THE OSTEOLOGY AND TAXONOMIC POSITION OF THE WHITE-BACKED DUCK, THALASSORNIS LEUCONOTUS
		Thalassornis resembles Dendrocygna in the form of the pubis, but otherwise is convergent to Biziura, especially in its relative proportions, which indicate a greater degree of adaptation for diving than in Dendrocygna.
		The lower jaw of Thalassornis resembles that of Dendrocygna because the posterior edge of the retroarticular process is straight, while in the Oxyurini (except Biziura) it is rounded.
		Since Thalassornis is the only known member of the Anserinae which has become highly specialized fo.r diving, it is possible that more such types failed to develop because this adaptive zone was being actively entered by several groups of true ducks (Anatinae), which were perhaps better fitted to exploit this way of life.
	elibrary.unm.edu /sora/Wilson/v083n03/p0270-p0277.html (3539 words)

	Duck: Definition and Links by Encyclopedian.com
		...Thalassornis † For other ducks, see also: Anatidae Dendrocygninae is a sub-family of the duck, goose...of whistling ducks in the genus Dendrocygna which has a worldwide distribution through the...
		Some members of the shelduck group Tadorninae are also named as ducks.
		There are 9 species in the genus Dendrocygna which has a worldwide distribution through the tropics and subtropics, and a single diving species, Thalassornis leuconotus the White-backed Duck[?] of Africa, which is difficult to classify and has often been placed in the Oxyurinae (which it resembles in morphology and feeding habits).
	www.encyclopedian.com /du/Duck.html (672 words)

	Dendrocygninae : Dendrocygna
		Whistling DucksWhite-faced Whistling DuckLarger version">Larger versionScientific classificationKingdom:AnimaliaPhylum:ChordataClass:AvesOrder:AnseriformesFamily†:AnatidaeGenera Dendrocygna Thalassornis † For other ducks, see also: Anatidae Dendrocygninae is a sub-family of the duck, goose and swan family of birds, Anatidae.
		Dendrocygninae is a sub-family of the duck, goose and swan family of birds, Anatidae.
		As they grow round the chorda and enclose say, the skeleton-forming stratum of cells, which provides the.
	www.termsdefined.net /de/dendrocygna.html (224 words)

	Numts: A Challenge for Avian Systematics and Population Biology
		That the se- quence codes for nine amino-acid substitutions rel- ative to other Dendrocygna, strongly suggests that it is no longer evolving under the same selective con- straints and supports the conclusion that it is a Numt.
		arborea 12.3 14.7 Thalassornis leuconotus 16.1 17.0 in sequencing over half of the mitochondrial genome of this species.
		We find this example significant because we ini- tially obtained a single unambiguous sequence with DNA extracted from muscle tissue, presumably with a ratio of mitochondrial to nuclear genome copies of 1,000s to 1 (Robin and Wong 1988).
	elibrary.unm.edu /sora/Auk/v115n01/p0214-p0221.html (7489 words)

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