Comparison of the Diet, Feeding Behavior, and Habitat Use of Mallards (Anas platyrhynchos) and Black Ducks (Anas rubripes)
نویسندگان
چکیده
Paul Merola of the Connecticut DJLP. for allowing access to hunter-killed ducks. Many thanks to Beth Wingate-Ehrhorn for help with everything.
منابع مشابه
Productive Performance and Hatchability of Alabio Ducks (Anas platyrhynchos Borneo) under Rural Feeding Management: Comparison of Different Dietary Protein Levels and Sex Ratios
An experiment was conducted to assess the optimum nutrient requirement and ideal mating ratios for Alabio ducks for production of fertile eggs and hatchability under rural feeding management. A total of 135 forty weeks old females and 27 males were used in the study. They were fed on low (17.5%), medium (19.5%) and high (21.5%) crude protein (CP) in diets containing approximately 3050 kcal of m...
متن کاملBibliography of American black duck (Anas rubripes) ecology and management
Migrations of the species in the area cited, feeding habits, available foods, and their utilization. Probably "through experimentation and management relatively unproductive stretches of marshland can be made to produce an abundance of desirable black duck foods." Addy, C. E. 1953. Fall migration of the black duck. 19:1-63. U.S. Fish and Wildlife Service Special Science Report Wildlife no. 19, ...
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•One of the more well-known examples of hybridization in birds is the frequently documented occurrence between sexually dimorphic Mallards (Anas platyrhynchos) and several closely related nondimorphic species in the mallard complex. In New Zealand, the Grey Duck (Anas superciliosa superciliosa) is the indigenous, nondimorphic Mallardlike species, and extensive hybridization with introduced Mall...
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Western Tennessee is an important region for waterfowl during non-breeding periods, supporting >40% of the Mississippi Flyway population of American black ducks (Anas rubripes). Understanding habitat selection and activities of waterfowl during the non-breeding period is important for directed habitat management on national wildlife refuges and in other wetlands important in meeting regional wa...
متن کاملMitochondrial Gene Trees and the Evolutionary Relationship of Mallard and Black Ducks.
We assayed restriction site differences in mitochondrial DNA (mtDNA) within and among allopatric populations of the Mallard (Anas platyrhynchos) and the American Black Duck (A. rubripes). The observed mtDNA clones grouped into two phylogenetically distinct arrays that we estimate differ by about 0.8% in nucleotide sequence. Genotypes in one clonal array were present in both species, while genot...
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