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Topic: Merganetta

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	PROJECT BACKGROUND (Site not responding. Last check: 2007-10-31)
		Merganetta armata leucogenys is distributed from southern Ecuador to northern Chile; and
		Merganetta armatta colombiana in the state of Mérida, by means of monitoring along the principal high mountain rivers of the state.
		Merganetta armatta colombiana, by means of field observations, water quality analysis, determination of the water volume and river beds.
	www.cecalc.ula.ve /BIOINFORMATICA/lamucuy2000/Torrent.htm (1018 words)

	A PHYLOGENETIC ANALYSIS AND CLASSIFICATION OF RECENT DABBLING DUCKS (TRIBE ANATINI) BASED ON COMPARATIVE MORPHOLOGY
		The unique Torrent Duck (Merganetta ar- mata) was placed in the monospecific tribe Mer- ganettini (Delacour and Mayr 1945) but consid- ered to be closely related to Anas (Niethammer 1952).
		Merganetta was included by Delacour (1956) and Johnsgard (1961a, 1965) within the Anatini, although Johnsgard (1978) later re- turned it to its own tribe.
		Sal- vadorina appears, on the basis of its (tadornine) carpal wing-spurs and peculiar, evidently de- rived wing specula, to be most closely related to Merganetta, which in turn is related to Hy- menolaimus by osteological synapomorphies (Livezey 1986) and a dark, vertical supraorbital stripe in natal plumage (shared also with Het- eronetta; pers.
	elibrary.unm.edu /sora/Auk/v108n03/p0471-p0507.html (17018 words)

	Asociación Colombiana de Ornitología - ACO
		Habitat use and diet of the Torrent Duck (Merganetta armata) in Ucumarí Regional Park in the Central Andes of Colombia
		Between July 1993 and December 1994, we estimated the population size of the Torrent Duck at the Ucumarí Regional Natural Park, characterized its habitat, and described some aspects of its feeding habits and diet.
		Although the diet was similar in composition to that of Rainbow Trout caught in the river, the null hypothesis of complete niche overlap among these species was rejected; this discards the likelihood of interspecific competition for food between them.
	www.ornitologiacolombiana.org /rev_1_naranjo.htm (517 words)

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