Density, distribution and feeding strategies of roan antelope (Hippotragus equinus) in Borgu sector of Kainji Lake National Park, Nigeria

2006 ◽  
Vol 44 (1) ◽  
Author(s):  
OT Aremu
Keyword(s):  
Density Distribution ◽  
National Park ◽  
Feeding Strategies ◽  
Roan Antelope ◽  
Hippotragus Equinus ◽  
Kainji Lake

scholarly journals Spatial distribution of snares in Ruma National Park, Kenya, with implications for management of the roan antelope Hippotragus equinuslangheldi and other wildlife

Oryx ◽  
2014 ◽  
Vol 49 (2) ◽  
pp. 295-302 ◽  
Author(s):  
Johnstone K. Kimanzi ◽  
Roy A. Sanderson ◽  
Stephen P. Rushton ◽  
Mware J. Mugo
Keyword(s):  
Spatial Distribution ◽  
National Park ◽  
Negative Binomial ◽  
Negative Binomial Regression ◽  
Geographical Information ◽  
Complete Spatial Randomness ◽  
Roan Antelope ◽  
Hippotragus Equinus ◽  
Using Data ◽  
Salt Licks

AbstractPoaching with snares has been identified as the main cause of decline of the endemic roan antelope Hippotragus equinuslangheldi in Ruma National Park, Kenya, from > 200 in 1979 to 37 in 2009. However, the spatial snaring patterns in the Park are not clearly understood. The focus of our study was to map the spatial distribution of snares in the Park and to identify the factors influencing this distribution, to develop effective methods of wildlife protection. Using data collected from 56 sample plots during 2006–2008, coupled with geographical information system techniques, we investigated the association between the occurrence of snares and the distribution of geographical features (slope, elevation), infrastructure (roads, fences), essential resources for wildlife (water, salt licks, forage), roan locations and wildlife density. Ripley's L function for assessing complete spatial randomness indicated that snares occurred in clumps (hotspots) up to 4 km apart. Negative binomial regression indicated that these hotspots occurred (1) near water resources, salt licks and the Park boundary, (2) far from roan locations and Park roads, (3) in areas with low gradients and low wildlife density, and (4) in areas with burned vegetation. We recommend concentrating routine security patrol efforts and resources on snare hotspots to reduce snaring and to protect the roan antelope and other threatened wildlife.

scholarly journals Anthrax immunization of free-ranging Roan Antelope Hippotragus Equinus in the Kruger National Park

Koedoe ◽  
1973 ◽  
Vol 16 (1) ◽  
Author(s):  
V. De Vos ◽  
G.L. Van Rooyen ◽  
J.J. Kloppers
Keyword(s):  
National Park ◽  
Kruger National Park ◽  
Successful Implementation ◽  
Vital Part ◽  
Roan Antelope ◽  
Hippotragus Equinus ◽  
Free Ranging

An aerial method of immunization is presented as afeasible means of vaccinating free-ranging roan antelope Hippotragus equinus against anthrax in the Kruger National Park. Themethod is described in detail and the results, obtained aftertwo consecutive years of application, are noted, tabulated andevaluated. A helicopter and a fixed wing aircraft were success-fully utilized in the location of widely dispersed roan antelopeherds and to bring the operator within effective firing rangeof the animal to be darted. A disposable projectile syringe,which simultaneously administers vaccine and effectively marksthe animal for later identification, is considered a vital part inthe successful implementation of the aerial method of immunization.

scholarly journals Challenges faced in the conservation of rare antelope: a case study on the northern basalt plains of the Kruger National Park

Koedoe ◽  
2002 ◽  
Vol 45 (2) ◽  
Author(s):  
C.C. Grant ◽  
T. Davidson ◽  
P.J. Funston ◽  
D.J. Pienaar
Keyword(s):  
National Park ◽  
Kruger National Park ◽  
Grass Species ◽  
Management Options ◽  
Equus Burchelli ◽  
Initial Drop ◽  
Roan Antelope ◽  
Hippotragus Equinus ◽  
Management Approaches

The conservation of rare antelope has long been one of the goals of the Kruger National Park. The roan antelope Hippotragus equinus, and to a lesser extent the tsessebe Damaliscus lunatus, represent low-density species or rare antelope in the park. Specific management approaches representing the older equilibrium approach, have been employed to conserve these antelope. Of these, the supply of artificial water over many decades was the most resource intensive. The sudden, severe drop in the roan antelope population towards the end of the 1980s was unexpected and, retrospectively, attributed to the development of a high density of perennial waterpoints. The postulated mechanism was that the perennial presence of water allowed Burchell’s zebra Equus burchelli to stay permanently in an area that was previously only seasonally accessible. The combined effect of a long, dry climatic cycle, high numbers of zebra and their associated predators was proposed to be the cause of this decline. As part of the new nature evolving or ecosystem resilience approach, twelve artificial waterpoints were closed in the prime roan antelope habitat in 1994 in an attempt to move the zebra out of this area. The zebra numbers declined as the rainfall increased. Closure of waterholes clearly led to redistribution of zebra numbers on the northern plains, zebra tending to avoid areas within several kilometres of closed waterpoints. However, at a larger scale, regional densities appeared similar in areas with and without closed waterpoints. There was an initial drop in the lion numbers in 1995, after which they stabilised. In spite of an improvement in the grass species composition and an increase in biomass the roan antelope population did not increase. The complexity of maintaining a population at the edge of their distribution and the problems associated with the conservation of such populations are discussed in terms of management options and monitoring approaches that may be employed in this process.

The common woody plants in Roan antelope (Hippotragus equinusDesmarest, 1804) habitat in Kainji Lake National Park, Nigeria

2010 ◽  
Vol 48 (1) ◽  
pp. 269-271 ◽  
Author(s):  
Benjamin Terungwa Tyowua ◽  
Ebenezer Abayomi Agbelusi ◽  
Babafemi George Ogunjemite
Keyword(s):  
Woody Plants ◽  
National Park ◽  
The Common ◽  
Roan Antelope ◽  
Kainji Lake

scholarly journals An outbreak of dermatophilosis in sable Hippotragus niger and roan Hippotragus equinus in the Kruger National Park

Koedoe ◽  
1976 ◽  
Vol 19 (1) ◽  
Author(s):  
V. De Vos ◽  
G. D. Imes
Keyword(s):  
National Park ◽  
Complete Recovery ◽  
Kruger National Park ◽  
Disease Entity ◽  
Wildlife Species ◽  
Benzene Hexachloride ◽  
Skin Biopsies ◽  
Roan Antelope ◽  
Hippotragus Equinus ◽  
Long Acting

A severe skin disease diagnosed as dermatophilosis took on alarming proportions in roan antelope Hippotragus equinus and sable antelope Hippotragus niger herds, which were kept in a 256 ha enclosure in the Kruger National Park, Republic of South Africa. Only calves were effected. Numerous Dermatophilus organisms were identified in skin biopsies taken from affected areas and examined histologically. Complete recovery followed a single treatment of intramuscular injections of a combination of a long-acting penicillin and streptomycin and the topical application of a preparation which included copper sulphate and benzene hexachloride. Factors which probably contributed to the outbreak included prolonged wetness, flies, a high density of susceptible animals and playful butting behaviour of the calves. This is the first report of the occurrence of dermatophilosis as a disease entity in wildlife species in southern Africa.

scholarly journals Population Structure of Ungulates in Waterberg National Park, Namibia

2019 ◽  
Vol 53 (1) ◽  
pp. 31-46 ◽  
Author(s):  
E. Kasiringua ◽  
Ş. Procheş ◽  
G. Kopij
Keyword(s):  
Population Structure ◽  
National Park ◽  
African Buffalo ◽  
Wet Season ◽  
Sex Structure ◽  
Tragelaphus Strepsiceros ◽  
White Rhino ◽  
Roan Antelope ◽  
Greater Kudu ◽  
Hippotragus Equinus

Abstract A study on the seasonal variation in population structure of seven (7) ungulate species, African buffalo (Syncerus caffer), eland (Tragelaphus oryx), giraffe (Giraffa camelopardalis), oryx (Oryx gazella), sable (Hippotragus niger), roan antelope (Hippotragus equinus) and the greater kudu (Tragelaphus strepsiceros) was carried out using the field census approach during the wet (February– April) and dry (July–September) season, and a water hole census (September) at seven waterholes in the Waterberg National Park, Namibia. Male warthog, oryx and black rhino on average comprised about 40 % of the population, whereas male sable, roan antelope, eland and buffalo comprised 30 % of the population. Male kudu and male white rhino comprised 20 % of the sex structure of the population, whereas male giraffe comprised more than 50 % of population. Age structure was dominated by adults, with 60 % of the total population in warthog, sable, eland and the white rhino, and 70 % in kudu, roan, buffalo, giraffe and black rhino on average. Oryx had the highest number of adults, with only 10 % of the population comprised of juveniles. Larger herds were observed during the wet season and smaller herds during the dry season. Animals were observed more abundantly in three of the vegetation types (Terminalia sericea — Melhania acuminata vegetation, Terminalia sericea — Thesium megalocarpum, Terminalia sericea — Blepharis integrifolia), with lower abundances in the rock-inhabiting Peltophorum africanum during both seasons.

Effects of collection zones and storage on hatchability and survival of feral helmeted guineafowl (Numida meleagris galleata pallas) eggs

2021 ◽  
Vol 18 (1) ◽  
pp. 74-81
Author(s):  
A.A. Yusuf ◽  
O.A. Jayeola ◽  
I.O.O. Osunsina ◽  
G.A. Dedeke
Keyword(s):  
National Park ◽  
Captive Breeding ◽  
Storage Systems ◽  
Ecological Zones ◽  
Numida Meleagris ◽  
Significant Difference ◽  
In Captivity ◽  
Protein Supply ◽  
And Storage ◽  
Kainji Lake

The desire to shore up the shortfall in protein supply, the increased awareness of the importance of cholesterol free animal protein, like guineafowl, and the need to conserve their wild genes, have necessitated studies on improved captive breeding of feral helmeted guineafowl. Hence, this study was aimed at determining the effects of ecological zones and storage systems on the guineafowl eggs. Guineafowl eggs (n=214), were collected from identified and monitored-nests within the Kainji Lake National Park (KLNP) and Old Oyo National Park (OONP). Out of 91 eggs collected from KLNP, 32 and 38 were stored at room temperature (RT-21-25°C) and refrigerator (RF-17-20°C), respectively for five days prior to incubation while 21 eggs were not stored (NS-27-29°C), and out of 123 collected from OONP, 70 and 19 were stored for five days prior to incubation at (RT-21-25°C) and (RF-17-20°C), respectively while 34 eggs were (NS- 27-29°C). Prior to incubation, eggs were weighed, the height and width were measured. The process was repeated after incubation for unhatched eggs. Candling was done three days before hatching at day 29 of egg incubation. Embryo status of unhatched eggs was determined by cracking the eggs. Descriptive and inferential statistics were used to analyse the data. The NS eggs from Kainji (7.60%) and Oyo (2.01%) had the lowest percentage shrinkage in weight across the three storage systems. The order was reversed in height with RF eggs from Kainji (0.96%) and Oyo (0.46%) having lowest. The least shrinkage in width of eggs from Oyo was recorded in the RF eggs (0.00%) and in NS (0.59%) from Kainji. Eggs candling showed that presumed fertile (opaque) was highest (69.10%) in NS eggs followed by RT (45.00%). There was no significant difference (p>0.05) between the hatchability of eggs from the two parks though hatchability (7.60%) of Kainji eggs was higher than those of Oyo (7.40%). Further check on fertilization after incubation showed that RT (37.50%) eggs from Kainji were fertilized but were unable to hatch alive so also was RF eggs (21.10%). The study showed that the eggs sizes vary with ecozones while size of the eggs and storage systems affects hatchability and survival of feral helmeted guineafowl eggs in captivity. Keywords: Guineafowl; ecozones; storage systems; incubation; candling; hatchability

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