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Lead gunshot pellet ingestion and tissue lead levels in wild ducks from Argentine hunting hotspots
(Elsevier, 2014-05)
Lead poisoning in waterfowl due to ingestion of lead pellets is a long recognized worldwide problem but poorly studied in South America, particularly in Argentinean wetlands where duck hunting with lead gunshot is extensive. ...
Torrent ducks (merganetta armata) diving and feeding in hot springs
(Waterbird Society, 2015-06-01)
Opportunistic behavior in birds can enhance the ability of a species to expand their distribution. Currently, there is no documentation of any bird diving and feeding in hot springs with temperatures greater than 30°C. A ...
Relationships among territory size, body size, and food availability in a specialist river duck
(Taylor & Francis, 2018-02-25)
Models of territorial behaviour predict a reduction in territory size when food availability and competitive pressure increase. Moreover, body size can play an important role in territorial defence. The Torrent Duck ...
Nesting habitat of Chubut Steamer Ducks in Patagonia, Argentina
(Csiro Publishing, 2010-05)
We studied nest-site selection of the flightless Chubut Steamer Duck (Tachyeres leucocephalus) along 292km of continental coastline and 59km of island coastline in Patagonia, Argentina, between 2004 and 2006. This area ...
Hybridization patterns and the evolution of reproductive isolation in ducks
(Wiley Blackwell Publishing, Inc, 2002-10)
Much of our knowledge of the evolution of reproductive isolation comes from studies of Drosophila. This body of work has revealed the following patterns: (1) reproductive isolation increases with phylogenetic distance ...
Variation in the size of eggs of Chubut Steamer Ducks (Tachyeres leucocephalus)
(Csiro Publishing, 2012)
Although several studies have analysed spatial or temporal variation in the size of eggs in waterfowl (Anseriformes), no study has analysed variation throughout the breeding range of a species. Chubut Steamer Ducks (Tachyeres ...
Variación de la abundancia del pato de torrente (merganetta armata) y caracteristicas del hábitat en dos ríos de montaña de la provincia de Jujuy, argentinaAbundance variation of the Torrent duck (Merganetta armata) and habitat characteristics in two mountain rivers of Jujuy Province, Argentina
(Neotropical Ornithological Society, 2011-11)
El Pato de torrente presenta densidades poblacionales muy bajas en comparación con otros anátidos que habitan los Andes, y está restringido a ríos de montaña torrentosos. El objetivo de este estudio es determinar la ...
Phylogenetic relationships of the Early Miocene diving and flightless duck Cayaoa bruneti (Aves, Anatidae) from Patagonia: homology or convergence?
(Wiley-Blackwell Publishing Ltd, 2019-11)
Cayaoa bruneti, from the early Miocene Gaiman Formation of Chubut, Argentina, provides the earliest evidence for diving behaviour and the earliest example of flight loss within Anseriformes. It is also the only known diving ...
Breeding phenology and new host list of the Black-headed Duck (Heteronetta atricapilla) in Argentina
(Wilson Ornithological Society, 2017-06)
The Black-headed Duck (Heteronetta atricapilla) is a unique interspecific brood parasite among birds where the host species provides parental care for incubation only. Despite this unique system, there are few studies on ...
What is the temporal extension of edge effects on tree growth dynamics?: A dendrochronological approach model using Scleronema micranthum (Ducke) Ducke trees of a fragmented forest in the Central Amazon
(Elsevier Science, 2019-06)
Although the Amazon Forest comprises the world's largest rainforest, providing fundamental ecosystem services to human well-being, vicissitudes imposed by deforestation, climate change, widespread use of fire and development ...