In 1967, the first confirmed diagnosis of duck plague (DP) in the USA was made from pekin ducks (Anas platyrhynchos domesticus) on commercial duck farms on Long Island, New York. Within 10 mo, DP was confirmed as the cause of death in migratory waterfowl on a Long Island bay. This paper reviews 120 DP epizootics reported from 1967 to 1995 that involved waterfowl species native to North America ...

Bengtsson, Daniel (2016). Stopover ecology of mallards – where, when and how to do what? Linnaeus University Dissertation No 242/2016, ISBN: 978-9188357-00-7. Written in English. The mallard (Anas platyrhynchos) is the most numerous and widespread duck in the northern hemisphere and a model species in ecology and harvest management. Migration is a crucial life stage for many birds and understan...

H5N1 highly pathogenic avian influenza (HPAI) viruses continue to be a threat to poultry in many regions of the world. Domestic ducks have been recognized as one of the primary factors in the spread of H5N1 HPAI. In this study we examined the pathogenicity of H5N1 HPAI viruses in different species and breeds of domestic ducks and the effect of route of virus inoculation on the outcome of infect...

MHC class I proteins mediate a variety of functions in antiviral defense. In humans and mice, three MHC class I loci each contribute one or two alleles and each can present a wide variety of peptide Ags. In contrast, many lower vertebrates appear to use a single MHC class I locus. Previously we showed that a single locus was predominantly expressed in the mallard duck (Anas platyrhynchos) and t...

The possibility of extending framework dates so that duck-hunting seasons can open earlier and remain open later has been the subject of extensive debate within the waterfowl management community. While potentially desirable from the perspective of hunting opportunity, extended framework dates could increase duck harvests substantially, cause shifts in the distribution of harvest toward more no...

Mallard Anas platyrhynchos ecology drives current habitat management strategies for most waterfowl; however, are these suitable other dabbling duck species? Migratory waterfowl, in addition to mallards, the lower Mississippi Alluvial Valley experience heavy hunting pressure, so should be appropriate a broader array of species. We investigated associations ducks (dabblers) Arkansas portion and f...

The coastal areas of the island Gotland in center Baltic Sea is an important wintering site for waterbirds Sweden. offers extensive shallow feeding grounds and, due to its location, some open waters remain available even during harsh winters. Wintering have been counted annually on since start International Waterbird Census 1967, with full coverage all inshore around main obtained years 1969–19...

Feathers of seabirds and waterfowl (for example the mallard duck (Anas platyrhynchos)) consist hierarchical fibrillar structures encapsulated with hydrophobic preen oil. These characteristics afford waterproofing through entrapment air pockets, enabling swimming diving for such bird species. This liquid repellency mechanism feathers is mimicked by surface hydrophobisation fibrous nonwoven polyp...