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Structure of herd in giraffe: Developmental changes of social relationship in calves

In the present study, I aim to clarify social structure and differences of social interaction among different aged giraffe’s (Giraffa Camelopardelis) in Katavi National Park, Tanzania. I recorded giraffe’s sex, herd size and individual identify by pattern of marking on their necks. I estimated age on the basis of body size. The study about social structure was conducted around HQ and IKUU. As a result, I observed more calves around HQ than IKUU. A previous study revealed that predation pressure

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Giraffe mother–calf relationships in the miombo woodland of Katavi National Park, Tanzania

Both predator pressure and habitat type influence mother–offspring relationship. Giraffe’s herd size and herd composition can be influenced by these two environmental factors. We sought to uncover whether predator pressure and habitat type also have an impact on giraffe mother–calf proximity and time spent together. We studied giraffe mother–calf relationships to compare mother–calf dyadic relationships in dense woodland with those reported in open woodlands. We collected data from three calves (within the first six months after birth) and their mothers

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Densities of mammals in partially protected areas: the Katavi ecosystem of western Tanzania

In Africa the majority of conservation areas sanction some sort of human activities within their borders but few of them are part of community‐based conservation schemes. The effectiveness of these state‐owned, partially protected areas in conserving mammalian fauna is largely unknown. Large and medium‐sized mammal densities in three different sorts of partially protected area were compared to mammal densities in an adjacent national park in western Tanzania by driving 2953 km of strip transects over a 14‐month period. In a Game

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Characterization of eight polymorphic loci for Maasai giraffe (Giraffa camelopardalis tippelskirchi) using non-invasive genetic samples

We used Illumina sequencing to develop eight novel microsatellite loci for Maasai giraffe (Giraffa camelopardalis tippelskirchi), and screened them using fecal DNA. Genetic diversity was assessed for 40 individuals from the Katavi National Park/Rukwa Game Reserve ecosystem in Tanzania. The number of alleles per locus ranged from 2 to 14 (mean = 6.2) and mean expected heterozygosity was moderate (range 0.025–0.838, mean = 0.527). These markers were successfully tested using degraded DNA and may be useful for future studies of

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Umbrella species: critique and lessons from East Africa

Umbrella species are ‘species with large area requirements, which if given sufficient protected habitat area, will bring many other species under protection’. Historically, umbrella species were employed to delineate specific reserve boundaries but are now used in two senses: (1) as aids to identifying areas of species richness at a large geographic scale; (2) as a means of encompassing populations of co-occuring species at a local scale. In the second sense, there is a dilemma as to whether to maximize

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Abundance and distribution of mammals in Katavi National Park, Tanzania

Ground transects were used to determine densities of 24 larger mammals in Katavi National Park. The Park consists of miombo woodland habitat and two seasonal lakes. Mammalian biomass was extremely high due primarily to large numbers of buffalo. The highest mammal densities were found around Lake Chada to the southeast of the Park. Contrary to earlier reports, species’ densities did not differ significantly between dry, wet and intermediate seasons, suggesting that, aside from elephant and warthog, mammals did not enter

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