Movement patterns and herd dynamics among South African giraffes (Giraffa camelopardalis giraffa)

2018 ◽  
Vol 56 (3) ◽  
pp. 620-628 ◽  
Author(s):  
Francois Deacon ◽  
Fred B. Bercovitch
Keyword(s):  
South African ◽  
Movement Patterns ◽  
Giraffa Camelopardalis ◽  
Herd Dynamics

Indian Ocean humpback dolphin (Sousa plumbea ) movement patterns along the South African coast

2017 ◽  
Vol 28 (1) ◽  
pp. 231-240 ◽  
Author(s):  
Els Vermeulen ◽  
Thibaut Bouveroux ◽  
Stephanie Plön ◽  
Shanan Atkins ◽  
Wilfred Chivell ◽  
...  
Keyword(s):  
Indian Ocean ◽  
South African ◽  
Movement Patterns ◽  
The South ◽  
African Coast

Nursery grounds, movement patterns and growth rates of dusky sharks, Carcharhinus obscurus: a long-term tag and release study in South African waters

2009 ◽  
Vol 60 (6) ◽  
pp. 571 ◽  
Author(s):  
Nigel E. Hussey ◽  
Ian D. McCarthy ◽  
Sheldon F. J. Dudley ◽  
Bruce Q. Mann
Keyword(s):  
South African ◽  
Growth Rates ◽  
Movement Patterns ◽  
Small Scale ◽  
Shark Species ◽  
Early Life Stages ◽  
Kwazulu Natal ◽  
Management Plans ◽  
Carcharhinus Obscurus

Knowledge of movement patterns of sharks in coastal waters is critical for the structuring of regional management plans. Through a long-term tag–recapture program, 9716 dusky sharks (Carcharhinus obscurus) were tagged and released along the east coast of South Africa. A total of 648 C. obscurus, principally small sharks (<100 cm PCL), were recaptured. Most recaptures were within 100 km of the tagging location in the nursery habitat in KwaZulu-Natal (KZN) with small scale movements occurring throughout the year. Forty-eight C. obscurus undertook movements >200 km that indicated a southerly migration between KZN and Eastern/Southern Cape (E/SC) between June and November. Seasonal northerly migrations were less well defined. The largest southerly and northerly movements were 1323 km and 1374 km, respectively. For sharks moving 1–100 km south from their tagging locality in KZN, an increase in displacement occurred between June and September identifying animals beginning their migration to the E/SC. With increasing displacement, there was also an increase in minimum swimming speed. Calculated growth rates of small sharks of 10.3–11.5 cm year–1 were in agreement with current literature values. Established tag–recapture programs provide an important tool in understanding the ecology of early life-stages of coastal shark species.

scholarly journals The South African giraffe Giraffa camelopardalis giraffa: a conservation success story

Oryx ◽  
2018 ◽  
Vol 53 (1) ◽  
pp. 45-48 ◽  
Author(s):  
Francois Deacon ◽  
Andy Tutchings
Keyword(s):  
South African ◽  
National Park ◽  
Total Population ◽  
Private Ownership ◽  
Conservation Priority ◽  
The South ◽  
Success Story ◽  
Giraffa Camelopardalis ◽  
Monitoring And Surveillance ◽  
Privately Owned

AbstractAcross Africa the majority of giraffe species and subspecies are in decline, whereas the South African giraffe Giraffa camelopardalis giraffa remains numerous and widespread throughout southern Africa. By 2013 the number of giraffes in South Africa's Kruger National Park had increased by c. 150% compared to 1979 estimates. An even greater increase occurred on many of the estimated 12,000 privately owned game ranches, indicating that private ownership can help to conserve this subspecies. The estimated total population size in South Africa is 21,053–26,919. The challenge now is to implement monitoring and surveillance of G. camelopardalis giraffa as a conservation priority and to introduce sustainable practices among private owners to increase numbers and genetic variation within in-country subspecies.

scholarly journals Identification of novel Babesia and Theileria species in South African giraffe (Giraffa camelopardalis, Linnaeus, 1758) and roan antelope (Hippotragus equinus, Desmarest 1804)

2009 ◽  
Vol 163 (1-2) ◽  
pp. 39-46 ◽  
Author(s):  
Marinda C. Oosthuizen ◽  
Basil A. Allsopp ◽  
Milana Troskie ◽  
Nicola E. Collins ◽  
Barend L. Penzhorn
Keyword(s):  
South African ◽  
Giraffa Camelopardalis ◽  
Roan Antelope ◽  
Hippotragus Equinus

Sexual selection and endocrine profiles in wild South African giraffe ( Giraffa camelopardalis giraffa )

2020 ◽  
Author(s):  
Ciska P. J. Scheijen ◽  
Fred B. Bercovitch ◽  
Ilse Luther‐Binoir ◽  
Andre Ganswindt ◽  
Francois Deacon
Keyword(s):  
Sexual Selection ◽  
South African ◽  
Giraffa Camelopardalis ◽  
Endocrine Profiles

The Three-dimensional structure of frozen-hydrated nudaurelia capensis β virus

1987 ◽  
Vol 45 ◽  
pp. 650-651
Author(s):  
N. H. Olson ◽  
T. S. Baker ◽  
Wu Bo Mu ◽  
J. E. Johnson ◽  
D. A. Hendry
Keyword(s):  
South African ◽  
Rna Virus ◽  
Carbon Film ◽  
Three Dimensional ◽  
Dimensional Structure ◽  
Electron Dose ◽  
Total Electron ◽  
Three Dimensional Structure ◽  
Negative Stain ◽  
Dimensional Reconstruction

Nudaurelia capensis β virus (NβV) is an RNA virus of the South African Pine Emperor moth, Nudaurelia cytherea capensis (Lepidoptera: Saturniidae). The NβV capsid is a T = 4 icosahedron that contains 60T = 240 subunits of the coat protein (Mr = 61,000). A three-dimensional reconstruction of the NβV capsid was previously computed from visions embedded in negative stain suspended over holes in a carbon film. We have re-examined the three-dimensional structure of NβV, using cryo-microscopy to examine the native, unstained structure of the virion and to provide a initial phasing model for high-resolution x-ray crystallographic studiesNβV was purified and prepared for cryo-microscopy as described. Micrographs were recorded ∼1 - 2 μm underfocus at a magnification of 49,000X with a total electron dose of about 1800 e-/nm2.

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