1. We use protein gel-electrophoresis to investigate genetic heterogeneity at 33 protein coding loci in a total of 46 blue wildebeest (C. taurinus) kept under different management regimes. 2. Average heterozygosity ranged from 2.14 to 4.3% and within-population differences accounted for 97.2% of total relative gene diversity. 3. Comparatively little divergence was found between animals sampled from populations with very diverse population sizes and management histories, with the largest genetic distance estimated between any two populations being only 0.0021. 4. We discuss our results with particular emphasis on the influence of management history on genetic diversity and divergence in C. taurinus.
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http://dx.doi.org/10.1016/0305-0491(93)90159-3 | DOI Listing |
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December 2024
Mammal Research Institute, Department of Zoology and Entomology, University of Pretoria, 0028 Hatfield, South Africa.
Monitoring stress-related faecal glucocorticoid metabolite (fGCM) concentrations is a reliable, popular and established approach for understanding wildlife responses to perceived stressors. To maintain fGCM integrity post-defaecation, faecal material must be promptly stored frozen, or dried to prevent continued suspected bacterial enzyme activity. We compare the effectiveness of freeze-drying with other field-friendly drying techniques (food dehydrator and homemade solar oven).
View Article and Find Full Text PDFMov Ecol
August 2024
Wildlife Ecology and Conservation Group, Wageningen University and Research, Droevendaalsesteeg 3a, Wageningen, 6708 PB, The Netherlands.
Background: Animal movement arises from complex interactions between animals and their heterogeneous environment. To better understand the movement process, it can be divided into behavioural, temporal and spatial components. Although methods exist to address those various components, it remains challenging to integrate them in a single movement analysis.
View Article and Find Full Text PDFNat Ecol Evol
June 2024
Department of Anthropology, University of Utah, Salt Lake City, UT, USA.
Eastern Africa is home to the largest terrestrial migrations on Earth. Though these migratory systems have been well studied for decades, little is known of their antiquity and evolutionary history. Serially sampled strontium stable isotopes (Sr/Sr) from tooth enamel can be used to track migration in mammals.
View Article and Find Full Text PDFNat Commun
April 2024
Department of Biology, University of Copenhagen, Copenhagen, Denmark.
The blue wildebeest (Connochaetes taurinus) is a keystone species in savanna ecosystems from southern to eastern Africa, and is well known for its spectacular migrations and locally extreme abundance. In contrast, the black wildebeest (C. gnou) is endemic to southern Africa, barely escaped extinction in the 1900s and is feared to be in danger of genetic swamping from the blue wildebeest.
View Article and Find Full Text PDFEcology
April 2024
Universite Claude Bernard Lyon 1, LBBE, UMR 5558, CNRS, VAS, Villeurbanne, France.
Interspecific interactions can influence species' activity and movement patterns. In particular, species may avoid or attract each other through reactive responses in space and/or time. However, data and methods to study such reactive interactions have remained scarce and were generally limited to two interacting species.
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