Hybrid Duck-Mallard (Anas boschas) + Pintail (Dafila acuta)
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چکیده
منابع مشابه
Seasonal patterns of LH, testosterone and semen quality in the Northern pintail duck (Anas acuta).
This study characterized seasonal changes in circulating LH and testosterone and in semen production and quality in the Northern pintail duck. Plasma LH and testosterone were measured in blood samples collected weekly throughout the year from eight males exposed to natural fluctuations in day length and temperature. Semen quality was evaluated weekly in these same males from April-June, the mon...
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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 کاملDescription of the mallard duck (Anas platyrhynchos) karyotype.
The karyotype of the mallard duck, Anas platyrhynchos, was characterised on the basis of R and C bands. Chromosomal preparations obtained from in vitro blood lymphocyte cultures were RBG- and CBG-stained. The structures of nine and 14 pairs of chromosomes were analysed by the RBG and CBG chromosome banding techniques, respectively. The location of R bands, as well as the size and arrangement of...
متن کاملPolycystic Kidney Disease Associated With Unilateral Lameness in a Northern Pintail {Anas acuta)
A captive 10-year-old female northern pintail (Anas acuta) with a history of unilateral lameness was diagnosed at necropsy with polycystic disease most severely affecting the right kidney. The lameness was attributed to pressure on the sacral nerve plexus caused by the unusually large cyst arising from the right kidney. Polycystic kidney disease previously has been considered an incidental find...
متن کاملCharacterization of northern pintail (Anas acuta) ejaculate and the effect of sperm preservation on fertility.
Northern pintail duck semen and sperm traits were characterized, and the fertility of cold-stored spermatozoa was investigated using artificial insemination. Excellent quality ejaculates containing high proportions of motile spermatozoa were collected from drakes within 20 s by a massage technique. Semen was collected in Beltsville poultry semen extender, pooled and cold-stored (4 degrees C) fo...
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ژورنال
عنوان ژورنال: The Auk
سال: 1903
ISSN: 0004-8038,1938-4254
DOI: 10.2307/4069796