Alternate routes of influenza A virus infection in Mallard (Anas platyrhynchos)
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Vocalizations of the Mallard (anas Platyrhynchos)
Weidmann 1956; Johnsgard 1965; McKinney compartment was then placed into a 90 ft x 90 ft x 12 ft flight pen. Thus, each of the two observation 1965a, 1969, 1970), and quantitative data are pens had a group of four pairs that had been visually available for visual displays of a few species separated for 5 months. of ducks (e.g., Weidmann 1958; Weidmann Birds were individually marked with colored...
متن کاملMalignant Melanoma in a Female Mallard Duck (Anas platyrhynchos)
Melanomas are malignant neoplasms originating from melanocytes. They reported in birds. In this case, macroscopic and microscopic (the histopathologic and IHC) findings supported a final diagnosis of cutaneous malignant melanoma in a mallard duck (Anas platyrhynchos). A female mallard duck (Anas platyrhynchos) was observed with a mass on the ventral portion of the neck. Th...
متن کاملMechanics of feeding in the Mallard ( Anas platyrhynchos L
Mechanics of feeding in the Mallard (Anas platyrhynchos L.; Aves, Anseriformes).--G. A. Zweers, A. F. C. Gerritsen, and P. J. van Kranenburg-Voogd. 1977. Contributions to Vertebrate Evolution, vol. $. vii + 109 pp., 20 figures. Paper $19.75.--For many years, primarily since the 1920's and 1950's, arian morphology has progressively become less descriptive and more functional in its approach. Emp...
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Embryotoxicity of the oil dispersant Corexit 9500 was examined using fertilized mallard duck eggs. Corexit 9500 was topically applied below the air cell to eggs in volumes ranging from 0 to 100 μL on day 3 of incubation. The highest incidence of mortality occurred at developmental stage 4, one day post-Corexit 9500 application. Hatching success was significantly decreased among eggs treated wit...
متن کاملLincoln estimates of mallard (Anas platyrhynchos) abundance in North America
Estimates of range-wide abundance, harvest, and harvest rate are fundamental for sound inferences about the role of exploitation in the dynamics of free-ranging wildlife populations, but reliability of existing survey methods for abundance estimation is rarely assessed using alternative approaches. North American mallard populations have been surveyed each spring since 1955 using internationall...
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ژورنال
عنوان ژورنال: Veterinary Research
سال: 2018
ISSN: 1297-9716
DOI: 10.1186/s13567-018-0604-0