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Journal articles on the topic 'Pilanesberg'

Author: Grafiati

Published: 4 June 2021

Last updated: 9 February 2022

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1

Humbert, F., M. A. Elburg, A. Agangi, G. Belyanin, J. Akoh, A. J. B. Smith, Y.-M. Chou, and N. J. Beukes. "A ~1.4 Ga alkaline mafic sill from the Carletonville area: connection to the Pilanesberg Alkaline Province?" South African Journal of Geology 123, no. 4 (November 10, 2020): 597–614. http://dx.doi.org/10.25131/sajg.123.0039.

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Abstract Numerous Mesoproterozoic alkaline intrusions belonging to the Pilanesberg Alkaline Province are present within the Transvaal sub-basin of the Kaapvaal Craton. The Pilanesberg Complex is the best-known example; it represents one of the world’s largest alkaline complexes, and is associated with a northwest-southeast trending dyke swarm that extends from Botswana to the southwest of Johannesburg. This paper documents the results of a petrological and geochemical study of a thin mafic sill (here referred to as an alkaline igneous body, AIB), which intrudes the ca. 2 200 Ma Silverton Formation close to the southernmost part of the Pilanesberg dyke swarm. The AIB has only been observed in cores from a borehole drilled close to Carletonville. It is hypocrystalline, containing randomly oriented elongated skeletal kaersutite crystals and 6 to 8 mm varioles mainly composed of radially oriented acicular plagioclase. These two textures are related to undercooling, probably linked to the limited thickness (70 cm) of the AIB coupled with a probable shallow emplacement depth. Ar-Ar dating of the kaersutite gives an age of ca. 1 400 Ma, similar to the age of Pilanesberg Complex. However, the AIB is an alkaline basaltic andesite and is thus notably less differentiated than the Pilanesberg Complex and some of its associated dykes, such as the Maanhaarrand dyke, for which we provide whole-rock geochemical data. Literature data indicate that the Pilanesberg dyke swarm also contains mafic hypabyssal rocks suggesting a link between the dyke swarm and the AIB. The AIB is characterized by strongly negative εNd and εHf, that cannot be related to crustal contamination, as shown by positive Ti and P anomalies, and the absence of negative Nb-Ta anomalies in mantle-normalised trace element diagrams. The AIB magma is interpreted to have been derived from a long-lived enriched, probably lithospheric mantle reservoir. The AIB thus provides important information on the magma source of the Pilanesberg Alkaline Province.

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2

Golomski, Casey. "Game Walk at Pilanesberg." Anthropology and Humanism 41, no. 2 (December 2016): 216–17. http://dx.doi.org/10.1111/anhu.12131.

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3

CAWTHORN, R. GRANT. "The geometry and emplacement of the Pilanesberg Complex, South Africa." Geological Magazine 152, no. 5 (January 12, 2015): 802–12. http://dx.doi.org/10.1017/s0016756814000764.

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AbstractThe circular 625 km2 alkaline Pilanesberg Complex, South Africa, contains coeval eruptive and several distinctive intrusive syenitic and foyaitic components, concentrically arranged at the surface. However, owing to poor outcrop the relationships between the different intrusive rocks, and their shape in the third dimension cannot be convincingly determined in the field. The original interpretation was a laccolith, whereas later models suggested a funnel shape, and appealed to ring-dyke and cone-sheet emplacement mechanisms. However, the radial widths of these coarse-grained bodies are over 1 km and so cannot have been emplaced as ring dykes or cone sheets, which are usually quite thin and fine grained. Creating the space for emplacement and removal of pre-existing country rocks for each postulated subsequent intrusive event presents a major challenge to this latter hypothesis. Extensive previously published and new field relationships are re-evaluated here to suggest that the body is a gently inward-dipping sheet and that subsequent injections of magma merely pumped up an existing and evolving magma chamber rather than intruded into solid rocks. A Bouguer gravity anomaly model is presented that supports the concept of a shallow, flat-bottomed body rather than one that continues to significant depth. There are many analogies with the Kangerlussuaq Intrusion, Greenland.

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4

Cawthorn, R. Grant, Robert M. Ellam, Lewis D. Ashwal, and Susan J. Webb. "A clinopyroxenite intrusion from the Pilanesberg Alkaline Province, South Africa." Precambrian Research 198-199 (March 2012): 25–36. http://dx.doi.org/10.1016/j.precamres.2011.12.016.

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5

Elburg, Marlina A., and R. Grant Cawthorn. "Source and evolution of the alkaline Pilanesberg Complex, South Africa." Chemical Geology 455 (April 2017): 148–65. http://dx.doi.org/10.1016/j.chemgeo.2016.10.007.

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6

Latypov, R., S. Chistyakova, J. van der Merwe, and J. Westraat. "A note on the erosive nature of potholes in the Bushveld Complex." South African Journal of Geology 122, no. 4 (December 1, 2019): 555–60. http://dx.doi.org/10.25131/sajg.122.0042.

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Abstract We describe an impressive ~55 m high outcrop from the Pilanesberg Platinum Mine open pit, located in the North-Western Bushveld Complex. The outcrop exposes the complete two-dimensional structure of three Merensky Unit potholes that cut several metres down into the underlying footwall anorthosites. The transgressive field relationships are interpreted to have resulted from thermochemical erosion of the footwall rocks by new pulses of magma replenishing the chamber and resulting in incremental growth of the Bushveld Complex.

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7

Kiefer, R., and M. J. Viljoen. "PGE exploration targets to the west of the Pilanesberg, South Africa." South African Journal of Geology 109, no. 4 (December 1, 2006): 459–74. http://dx.doi.org/10.2113/gssajg.109.4.459.

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8

Magome, Hector, James W. Cain, Norman Owen-Smith, and Stephen R. Henley. "Forage selection of sable antelope in Pilanesberg Game Reserve, South Africa." South African Journal of Wildlife Research 38, no. 1 (April 2008): 35–41. http://dx.doi.org/10.3957/0379-4369-38.1.35.

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9

Coetzee, L. C., and M. Ramonotsi. "Using StarCS Automodeller to Model Pilanesberg Platinum Mine Primary UG2 Milling Circuit." IFAC-PapersOnLine 50, no. 2 (December 2017): 7–12. http://dx.doi.org/10.1016/j.ifacol.2017.12.002.

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10

Woolley, Leigh-Ann, Joshua J. Millspaugh, Rami J. Woods, Samantha Janse van Rensburg, Robin L. Mackey, Bruce Page, and Rob Slotow. "Population and Individual Elephant Response to a Catastrophic Fire in Pilanesberg National Park." PLoS ONE 3, no. 9 (September 17, 2008): e3233. http://dx.doi.org/10.1371/journal.pone.0003233.

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11

Hrabar, Halszka, and Johan T. Toit. "Dynamics of a protected black rhino (Diceros bicornis) population: Pilanesberg National Park, South Africa." Animal Conservation 8, no. 3 (August 2005): 259–67. http://dx.doi.org/10.1017/s1367943005002234.

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12

Coetzee, L. C., and M. Ramonotsi. "Applying StarCS RNMPC with Real-Time Optimiser to Pilanesberg Platinum Mines Primary UG2 Milling Circuit." IFAC-PapersOnLine 49, no. 20 (2016): 78–83. http://dx.doi.org/10.1016/j.ifacol.2016.10.100.

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13

Andersen, Tom, Marlina Elburg, and Muriel Erambert. "Contrasting trends of agpaitic crystallization in nepheline syenite in the Pilanesberg Alkaline Complex, South Africa." Lithos 312-313 (July 2018): 375–88. http://dx.doi.org/10.1016/j.lithos.2018.05.015.

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14

Bailey, A. W., B. H. Brocket, and M. T. Mentis. "Fire management in Pilanesberg National Park, Bophuthatswana, using expert systems as aids to decision making." African Journal of Range & Forage Science 10, no. 1 (April 1993): 25–30. http://dx.doi.org/10.1080/10220119.1993.9638317.

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15

Emerman, S. H. "Correlation of a dyke swarn in southeastern Botswana with the Pilanesberg dyke swarm, South Africa." Journal of African Earth Sciences (and the Middle East) 12, no. 4 (January 1991): 525–31. http://dx.doi.org/10.1016/0899-5362(91)90012-n.

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16

Mbenga, Bernard K. "Forced labour in the Pilanesberg: the flogging of Chief Kgamanyane by Commandant Paul Kruger, Saulspoort, April 1870." Journal of Southern African Studies 23, no. 1 (March 1997): 127–40. http://dx.doi.org/10.1080/03057079708708526.

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17

Andersen, Tom, Marlina Elburg, and Muriel Erambert. "The miaskitic-to-agpaitic transition in peralkaline nepheline syenite (white foyaite) from the Pilanesberg Complex, South Africa." Chemical Geology 455 (April 2017): 166–81. http://dx.doi.org/10.1016/j.chemgeo.2016.08.020.

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18

Pantshi, B., and H. F. J. Theart. "The Red Syenite of the Pilanesberg Complex; a potential raw material source for the South African ceramics and glass industry." South African Journal of Geology 111, no. 1 (March 1, 2008): 27–38. http://dx.doi.org/10.2113/gssajg.111.1.27.

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19

van Dyk, Gus, and Rob Slotow. "The effects of fences and lions on the ecology of African wild dogs reintroduced to Pilanesberg National Park, South Africa." African Zoology 38, no. 1 (April 2003): 79–94. http://dx.doi.org/10.1080/15627020.2003.11657196.

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20

da Costa, Alberto J. M. "Palmietfontein kimberlite pipe, South Africa—A case history." GEOPHYSICS 54, no. 6 (June 1989): 689–700. http://dx.doi.org/10.1190/1.1442697.

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The Palmietfontein kimberlite pipe is located 150 km northwest of Johannesburg, South Africa. It was emplaced at the contact between mafic rocks of the Bushveld complex and syenites of the Pilanesberg complex, and coincides with the intersection of two major faults. Palmietfontein is one of the larger known kimberlite pipes in South Africa; it has a surface area of 12 ha and is diamondiferous. The present geophysical study was designed to assist in planning an extensive program of trenching and drilling. Unweathered kimberlite has geophysical responses very similar to the country rock at Palmietfontein. Weathering and alteration of the upper 50 m of the pipe, however, have resulted in various physical changes, which has made the target amenable to investigation by various geophysical techniques. The surveys used in this study are gravity, electrical, seismic refraction, and airborne and ground magnetics and electromagnetics (EM). The boundary of the pipe was accurately defined, and the dip of the wallrock contact was determined by using various models and combinations of techniques. A small satellite body of kimberlite was also discovered during the course of this investigation. The most suitable techniques for kimberlite prospecting, particularly when the top portion of the kimberlite is weathered, are airborne EM and magnetics, combined with the Slingram ground-EM system. For more quantitative results, gravity and seismic surveys should be used.

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21

Stoffelen, Arie, Bright Adiyia, Dominique Vanneste, and Nico Kotze. "Post-apartheid local sustainable development through tourism: an analysis of policy perceptions among ‘responsible’ tourism stakeholders around Pilanesberg National Park, South Africa." Journal of Sustainable Tourism 28, no. 3 (October 29, 2019): 414–32. http://dx.doi.org/10.1080/09669582.2019.1679821.

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22

Brockett, B. H., H. C. Biggs, and B. W. van Wilgen. "A patch mosaic burning system for conservation areas in southern African savannas." International Journal of Wildland Fire 10, no. 2 (2001): 169. http://dx.doi.org/10.1071/wf01024.

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Fire-prone savanna ecosystems in southern African conservation areas are managed by prescribed burning in order to conserve biodiversity. A prescribed burning system designed to maximise the benefits of a diverse fire regime in savanna conservation areas is described. The area burnt per year is a function of the grass fuel load, and the number of fires per year is a function of the percentage area burnt. Fires are point-ignited, under a range of fuel and weather conditions, and allowed to burn out by themselves. The seasonal distribution of planned fires over a year is dependent on the number of fires. Early dry season fires (May–June) tend to be small because fuels have not yet fully cured, while late season fires (August–November) are larger. More fires are ignited in the early dry season, with fewer in the late dry season. The seasonality, area burnt, and fire intensity are spatially and temporally varied across a landscape. This should result in the creation of mosaics, which should vary in extent and existence in time. Envelopes for the accumulated percentage to be burnt per month, over the specified fire season, together with upper and lower buffers to the target area are proposed. The system was formalised after 8 years of development and testing in Pilanesberg National Park, South Africa. The spatial heterogeneity of fire patterns increased over the latter years of implementation. This fire management system is recommended for savanna conservation areas of >20 000 ha in size.

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23

Power, R. John, Vincent Van der Merwe, Samantha Page-Nicholson, Mia V. Botha, Stephen Dell, and Pieter Nel. "A Note on the Reestablishment of the Cheetah Population in the Pilanesberg National Park, South Africa." African Journal of Wildlife Research 49, no. 1 (February 8, 2019). http://dx.doi.org/10.3957/056.049.0012.

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24

Slotow, R., and G. Van Dyk. "Ranging of older male elephants introduced to an existing small population without older males: Pilanesberg National Park." Koedoe 47, no. 2 (December 19, 2004). http://dx.doi.org/10.4102/koedoe.v47i2.82.

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The African elephant Loxodonta africana is one of the key components of African savanna. Not only do they play a crucial role in the ecosystem (Dublin et al. 1990; Van de Vijver et al. 1999), but they also provide one of the integral parts of sustainable conservation through ecotourism (e.g. Brown 1993) and consumptive utilisation (Taylor 1993). The ever-expanding transformation of savanna land-use through human settlement is resulting in the isolation of elephants into small populations. Furthermore, in South Africa, the reclamation of ranch land as game areas has resulted in the reintroduction of elephant to a large number of small, isolated, fenced reserves.

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25

Carruthers, Jane. "Pilanesberg National Park, North West Province, South Africa: Uniting economic development with ecological design – A history, 1960s to 1984." Koedoe 53, no. 1 (March 2, 2011). http://dx.doi.org/10.4102/koedoe.v53i1.1028.

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In the late 1970s, a ground-breaking project began in the Pilanesberg district in what is now the North West Province of South Africa to create a wildlife conservation and eco-tourism venture from degraded marginal farmland in an aesthetically attractive extinct volcanic crater. The establishment of this national park was innovative in a number of respects, including a partnership between landscape and ecological designers, local community development and participation, regional tourist satisfaction, trophy hunting, environmental education, ecological restoration, and wildlife conservation and management. This paper briefly explored the park’s early history, explaining its landscape, its early peopling and historical land use. The narrative then concentrated on the first five years of the park’s existence, from its inception in 1977, under the aegis of Agricor, Bophuthatswana’s rural development agency, to 1984, when responsibility for the park was given over to Bophuthatswana National Parks, a parastatal agency, and a new era began. The article contended that 1984 is an appropriate date on which to conclude the early history of the Pilanesberg National Park (PNP) because it was then that the experimental phase of the park ended: its infrastructure was sufficiently developed to offer a satisfactory visitor experience, the management plan was revised, its bureaucratic structures were consolidated and an attitude survey amongst the local community was undertaken. Embedding the originating period of the PNP in its historical, political and socio-economic context, the paper foregrounded those elements in the park’s beginnings that were new in the southern African protected area arena. Thus, elements that relate to socio-politics, landscape and ecological design and restoration, and early relations with neighbouring communities were emphasised. This paper has been written by an historian and is therefore conceptual and historical, conforming in language and structure to the humanities style (environmental history). It relies on published and unpublished literature and oral information and the critical evaluation of these sources.Conservation implications: The pioneering example of the PNP as a protected area is relevant to the field of conservation science because, as human population densities increase, as the tourism sector develops, as marginal farmland becomes available for new uses, and as it becomes important to include neighbouring communities in conservation activities, a study of this park’s early history and socio-political and economic context may be of assistance in the development of similar projects elsewhere in South Africa and beyond.

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26

Slotow, R., and G. Van Dyk. "Role of delinquent young "orphan" male elephants in high mortality of white rhinoceros in Pilanesberg National Park, South Africa." Koedoe 44, no. 1 (July 1, 2001). http://dx.doi.org/10.4102/koedoe.v44i1.188.

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We describe white rhinoceros (Ceratotherium simum) mortality at Pilanesberg National Park, South Africa, focussing on mortality caused by African elephant (Loxodonta africana). We reconstructed records from a range of historical sources, and estimated that up to 49 rhino were killed by elephant. There was confirmed mortality in 1994 and 1996, and based on patterns, we suggest a set of rhino mortality from elephant in 1992. Both sexes and all age classes were victims. There was no significant bias to older animals, but given the rhino population structure, there was a significant bias towards males in adult deaths. The culprits were identified as young male elephants that entered musth about 10 years younger than expected, and maintained musth for a full term at first occurrence. We attributed this to the lack of a mature bull hierarchy in the park, because these elephants were the product of translocation of young animals (<10 years old) remaining from culls in Kruger National Park. We emphasise the need for accurate monitoring and record keeping, and a focus on individual identification of key species in small reserves.

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27

Swart, Isabel, and André C. Horn. "Evaluation of the environmental and social sustainability policy of a mass tourism resort: A narrative account." HTS Teologiese Studies / Theological Studies 68, no. 1 (January 11, 2012). http://dx.doi.org/10.4102/hts.v68i1.1264.

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The recordation of the life stories of individuals residing in the community of Ledig, who have been dependent on the Sun City Resort situated in the Pilanesberg area in the North West Province of South Africa for their quality of life for more than 20 years, provided the basis for the evaluation of the environmental and social sustainability of this micro-cosmos on a multidisciplinary level. This study focused on the hermeneutical arch of narrative theory within the framework of human geography and sustainability science. The natural environment was evaluated for the role it plays in the sustainability of the livelihoods of the Ledig community members as well as the institutional life of the Sun City Resort. The results of this study suggested that the environmental policy for the Sun City Resort, formalised in 2004, has been guiding the Sun City Resort to contribute positively to the sustainability of the area. The study also demonstrated that a focus on the next generation of potential employees and the environmental education of all the communities were crucial to ensure the resilience of the social and ecological capacity of the area.

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28

Somarin, A. K., and Ingo Steinhage. "Use of field portable XRF in exploration of PGE-enriched zones in the Pilanesberg PGE deposit, Bushveld Complex, South Africa." Geochemistry: Exploration, Environment, Analysis, December 23, 2020, geochem2020–075. http://dx.doi.org/10.1144/geochem2020-075.

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The field-portable X-ray fluorescence (FPXRF) spectrometer has evolved significantly in the last decade and became one of the most innovative tools for field geologists. Portability and ease of use of FPXRF systems have opened up new and unique applications for even novice technicians. Application of FPXRF in precious metals exploration and mining appears to be challenging due to their low concentrations (lower than detection limit by FPXRF) in nature and even in most ore deposits. This case study shows the success of FPXRF in identifying anomalous zones of platinum group elements (PGE) and Au (target elements) using pathfinder elements in the Pilanesberg PGE deposit, Bushveld Complex, South Africa. Sixty-three core samples were analyzed using both FPXRF and laboratory methods. In these samples, Pt < 8ppm, Pd <5 ppm, and Au <1 ppm which were not detected by FPXRF; however, Ni and Cu are up to 6540 and 3560 ppm, respectively, which were easily detected by FPXRF. These elements show positive correlation with the precious metals indicating that they can be used as pathfinder. Both direct-shot analyses of core samples and their pulverized specimen assays show correlation with lab assay data suggesting that both methods can be used in the field; however, the accuracy of direct-shot data is lower due to heterogeneity of samples.

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29

Druce, Heleen, K. Pretorius, D. Druce, and R. Slotow. "The effect of mature elephant bull introductions on ranging patterns of resident bulls: Phinda Private Game Reserve, South Africa." Koedoe 49, no. 2 (December 19, 2006). http://dx.doi.org/10.4102/koedoe.v49i2.115.

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Increasing popularity of wildlife viewing has resulted in a rapid increase in small, enclosed reserves in South Africa. The African elephant is one of the many species that has been reintroduced into these reserves for eco-tourism. These elephant populations were established as young (smaller that 10 years old) orphans from prior Kruger National Park culling operations. Consequently, this abnormal sex and age structure of these introduced populations has influenced their behavioural and spatial ecology. In Pilanesberg National Park, this abnormal behaviour was corrected by introducing older bulls and culling certain problem elephants. In July 2003, three older bulls (29–41 years old) were introduced into Phinda Private Game Reserve, KwaZulu-Natal, South Africa in order to normalise the bull age structure. These introduced bulls were monitored intensively after release, as was the resident bull population, both before and after introduction of the older bulls. The introduced bulls settled into restricted ranges separate from the family groups. All the resident bulls decreased their home ranges at first, with most increasing their home ranges a year later. The resident bulls’ change in ranging patterns was due more to ecological factors than to the influence of the mature bull introduction. This study indicates that the introduction of older male elephants into small populations does not pose major risks or animal welfare concerns.

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30

Nikodinoska, Natasha, Llewellyn C. Foxcroft, Mathieu Rouget, Alessandro Paletto, and Sandra Notaro. "Tourists’ perceptions and willingness to pay for the control of Opuntia stricta invasion in protected areas: A case study from South Africa." Koedoe 56, no. 1 (February 25, 2014). http://dx.doi.org/10.4102/koedoe.v56i1.1214.

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Invasive alien plants have a long history of establishment in the national parks of South Africa.In particular, Opuntia stricta (sour prickly pear) has invaded several protected areas in thecountry, threatening the biodiversity conservation mandate of these conservation areas. Thisarticle focuses on the economic estimation of O. stricta’s negative impacts in protected areas byusing Contingent Valuation surveys conducted amongst a sample of tourists in the PilanesbergNational Park (North West Parks and Tourism Board, South Africa). Tourists’ familiarity andawareness of selected invasive alien plants and their willingness to pay for the implementationof a control programme for O. stricta were assessed. The results show that many tourists arefamiliar with invasive alien plants and their (positive and negative) impacts and, in particular,perceived the presence of O. stricta to be negative, due to the impacts on aesthetics and recreation.Socio-demographic characteristics, as well as individual attitudes and biocentric beliefs, have aninfluence on the willingness to contribute financially to a control programme for O. stricta. Theindividual willingness to pay assessment found that the majority of respondents (78%) werewilling to pay a higher entrance fee (an additional R57.30 or $7.00 per day) for a hypotheticalprogramme to control the invasion of O. stricta in the Pilanesberg National Park.Conservation implications: The willingness of tourists to pay for O. stricta managementprovides useful insights in the decision-making process of park management. The resultsare encouraging, since, in general, tourists are aware of the problem and are in support ofproviding additional economic input for preventing future alien plant invasions.

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31

Nikodinoska, Natasha, Llewellyn C. Foxcroft, Mathieu Rouget, Alessandro Paletto, and Sandra Notaro. "Online appendix 1:Tourists’ perceptions and willingness to pay for the control of Opuntia stricta invasion in protected areas: A case study from South Africa." Koedoe 56, no. 1 (July 2, 2014). http://dx.doi.org/10.4102/koedoe.v56i1.1214-1.

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Invasive alien plants have a long history of establishment in the national parks of South Africa.In particular, Opuntia stricta (sour prickly pear) has invaded several protected areas in thecountry, threatening the biodiversity conservation mandate of these conservation areas. Thisarticle focuses on the economic estimation of O. stricta’s negative impacts in protected areas byusing Contingent Valuation surveys conducted amongst a sample of tourists in the PilanesbergNational Park (North West Parks and Tourism Board, South Africa). Tourists’ familiarity andawareness of selected invasive alien plants and their willingness to pay for the implementationof a control programme for O. stricta were assessed. The results show that many tourists arefamiliar with invasive alien plants and their (positive and negative) impacts and, in particular,perceived the presence of O. stricta to be negative, due to the impacts on aesthetics and recreation.Socio-demographic characteristics, as well as individual attitudes and biocentric beliefs, have aninfluence on the willingness to contribute financially to a control programme for O. stricta. Theindividual willingness to pay assessment found that the majority of respondents (78%) werewilling to pay a higher entrance fee (an additional R57.30 or $7.00 per day) for a hypotheticalprogramme to control the invasion of O. stricta in the Pilanesberg National Park.Conservation implications: The willingness of tourists to pay for O. stricta managementprovides useful insights in the decision-making process of park management. The resultsare encouraging, since, in general, tourists are aware of the problem and are in support ofproviding additional economic input for preventing future alien plant invasions.

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32

Williams, J. H., E. Van Wilpe, and M. Momberg. "Renal medullary AA amyloidosis, hepatocyte dissociation and multinucleated hepatocytes in a 14-year-old free-ranging lioness (Panthera leo)." Journal of the South African Veterinary Association 76, no. 2 (June 13, 2005). http://dx.doi.org/10.4102/jsava.v76i2.404.

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A 14-year-old lioness, originating from Etosha in Namibia, and a member of a pride in Pilanesberg National Park since translocation in 1994, was euthanased due to fight-related vertebral fracture and spinal injury, incurred approximately 6-8 weeks previously. Blood specimens collected at the time of death showed mild anaemia and a leukogram reflecting stress and chronic infection. Necropsy conducted within 2 hours of death was on a dehydrated, emaciated animal with hindquarter wasting and chronic traumatic friction injuries from dragging her hindlegs. There was cellulitis in the region of bite-wounds adjacent to the thoraco-lumbar vertebral fracture, at which site there was spinal cord compression, and there was marked intestinal helminthiasis. The outer renal medullae appeared pale and waxy and the liver was macroscopically unremarkable. Histopathology and electron microscopy of the kidneys revealed multifocal to coalescing deposits of proximal medullary interstitial amyloid, which fluoresced strongly with thioflavine T, and was sensitive to potassium permanganate treatment prior to Congo Red staining, thus indicating inflammatory (AA) origin. There was diffuse hepatocyte dissociation, as well as numerous binucleated and scattered multinucleated (up to 8 nuclei/cell) hepatocytes, with swollen hepatocyte mitochondria, in liver examined light microscopically. Ultrastructurally, the mono-, bi- and multinucleated hepatocytes contained multifocal irregular membrane-bound accumulations of finely-granular, amorphous material both intra-cytoplasmically and intra-nuclearly, as well as evidence of irreversible mitochondrial injury. The incidence and relevance in cats and other species of amyloidosis, particularly with renal medullary distribution, as well as of hepatocyte dissociation and multinucleation, as reported in selected literature, is briefly overviewed and their occurrence in this lioness is discussed.

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