Seasonal variation in pituitary-gonadal function in free-ranging impala (Aepyceros melampus)
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چکیده
منابع مشابه
Regional genetic structuring and evolutionary history of the impala Aepyceros melampus.
Samples of 162 impala antelope (Aepyceros melampus) from throughout its distribution range in sub-Saharan Africa were surveyed using eight polymorphic microsatellite loci. Furthermore, 155 previously published mitochondrial DNA (mtDNA) sequences from the same localities were reanalyzed. Two subspecies of impala are presently recognized--the isolated black-faced impala (Aepyceros melampus peters...
متن کاملParasite infection rates of impala (Aepyceros melampus) in fenced game reserves in relation to reserve characteristics
Under certain conditions reserves can pose a threat to wildlife conservation by increasing the transmission of parasites and pathogens. In this study, I investigated associations between reserve characteristics including area, density and species richness and parasite infection rates in impala (Aepyceros melampus). Using coprological methods to measure gastrointestinal parasitism rates of impal...
متن کاملDistribution of endocrine cells in the gut of the impala (Aepyceros melampus).
Immunocytochemical methods were employed to demonstrate endocrine cells, containing peptides and serotonin, in the gut of the impala. Cells immunoreactive to serotonin, somatostatin, gastrin, cholecystokinin, glucagon, neurotensin, secretin, glucose-dependent insulinotropic peptide and motilin were detected. Antisera raised to substance P and pancreatic polypeptide failed to stain any cells. Th...
متن کاملAepyceros melampus: description and biology
DURDEN, L.A. & HORAK, I.G. 2004. Linognathus weisseri n. sp. (Phthiraptera: Linognathidae) of impalas, Aepyceros melampus: description and biology. Onderstepoort Journal of Veterinary Research, 71:59–66 The adult male and female and first instar nymph of the sucking louse Linognathus weisseri n. sp. are described. This louse was collected from impalas, Aepyceros melampus, at three localities in...
متن کاملEffect of Dietary Extremes on Impala (Aepyceros melampus) Rumen Epimural Flora.
The impala, classified as an intermediate feeder among wild ruminants, grazes exclusively on green grasses during the summer rains but turns to an essentially browse habit during the winter, when a diet of leaves, pods, and twigs is supplemented with dried grasses. Scanning electron microscope studies of bacteria attached to the rumen epithelia of animals feeding on digestible, carbohydrate-ric...
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ژورنال
عنوان ژورنال: Reproduction
سال: 1991
ISSN: 1470-1626,1741-7899
DOI: 10.1530/jrf.0.0930497