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Browsing by Author "O'Riain, Justin"

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Anti-predator behaviour of Cape fur seals Arctocephalus pusillus pusillus in relation to predation by white sharks Carcharodon carcharias around Seal Island, False Bay, South Africa

Author: De Vos, Alta Date: 2010 How predators affect the behaviour of their prey is one of the most studied subjects in behavioural ecology, with many hypothesis and models explaining how animals should behave and even more descriptive studies detailing how they do. The ... Read more
Behavioural ecology of white sharks carcharodon carcharias in False Bay, South Africa: towards improved management and conservation of a threatened apex predator

Author: Kock, Alison Ann Date: 2014 The coastal waters off South Africa support a significant proportion of the global white shark population, with at least four well-established coastal aggregation sites. How critical these sites are to the southern African and hence global ... Read more
Cape Town's cats: reassessing predation through kitty-cams

Author: Morling, Frances Date: 2014 Domestic cats (Felis catus) are abundant generalist predators that exploit a wide range of prey within and adjacent to the urban matrix. Cats are known to have contributed to the extinction and endangerment (mostly on islands) of a number of ... Read more
Cape Town's domestic cats : prey and movement patterns in deep-urban and urban-edge areas

Author: George, Sharon Date: 2010 Domestic and feral cats (Felis catus) have impacted negatively on native wildlife on both islands and on the mainland. Impacts range from a reduction in numbers of prey species to local extinctions, especially of birds on islands. This study ... Read more
Causes and consequences of mortality and mutilation in the Cape Peninsula baboon population, South Africa

Author: Beamish, Esme Kilroy Date: 2009 In the Cape Peninsula, South Africa, the population of chacma baboons (Papio ursinus) has become locally fragmented and geographically isolated from all other populations in the Western Cape. A census performed in 1999 revealed a baboon ... Read more
The conservation status and dynamics of a protected African lion Panthera leo population in Kafue National Park, Zambia

Author: Midlane, Neil Date: 2014 The abundance of African lions Panthera leo has declined rapidly in recent decades, largely due to competition for space with growing human populations. The future persistence of the species in the wild therefore depends heavily on viable ... Read more
Determinants of predator abundance in northern KwaZulu-Natal: top-down or bottom-up?

Author: Woodgate, Zoe Anne Date: 2014 As protected areas ultimately aim to successfully conserve natural predator populations, an understanding of the non-anthropogenic drivers of their population change is critical. Both bottom-up (e.g. food limitation, competition) and top-down ... Read more
The effects of white shark presence on the behaviour of Cape fur seals at Geyser Rock, Gansbaai, South Africa

Author: Wcisel, Michelle Date: 2013 Predators and the risk associated with their presence may affect group composition, group size, movement patterns, and habitat use of prey species. The removal of predators, or their reintroduction following long periods of absence, equally ... Read more
Estimating spotted hyaena (Crocuta crocuta) population density using camera trap data in a spatially-explicit capture-recapture framework

Author: De Blocq , Andrew Dirk Date: 2014 Species-specific population data are important for the effective management and conservation of wildlife populations within protected areas. However such data are often logistically difficult and expensive to attain for species that are rare ... Read more
Gastrointestinal parasite infections in Chacma baboons (Papio ursinus) of the Cape Peninsula, South Africa : the influence of individual, group and anthropogenic factors

Author: Ravasi, Damiana Francesca Celine Date: 2009 This study investigates whether anthropogenic changes in the Cape Peninsula, South Africa, have affected gastrointestinal parasite infections in a free-living population of chacma baboons (Papio ursinus). Data on parasite diversity and ... Read more
Gastrointestinal Parasite infections in Chacma Baboons (Papio ursinus) of the Cape Peninsula, South Africa: the influence of individual, group, and anthropogenic factors

Author: Ravasi, Damiana Francesca Celine Date: 2009 Habitat disturbance can lead to the alteration of host-parasite dynamics and ultimately influence the mechanisms that regulate wildlife populations. This study investigates whether anthropogenic changes in the Cape Peninsula, South Africa, ... Read more
Genetic admixture of Kruger National Park black rhino (Diceros bicornis minor): conservation implications

Author: Stanbridge, Deborah Date: 2020 Black rhinoceroses (Diceros bicornis) have been extirpated from most of their historic range with the remaining individuals (ca. 5200) living in geographically isolated populations. Management priorities include creating new populations whilst ... Read more
Hormonal aspects of reproductive suppression in the naked mole-rat, Heterocephalus glaber

Author: Tuomi, Erin Bianca Date: 2006 Subordinate, female naked mole-rats (Heterocephalus g/aber) are anovulatory as a result of extremely low luteinising hormone (LH) levels. Evidence suggests that aggression from the dominant female naked mole-rat directed towards subordinates ... Read more
The impact of White Shark (Carcharodon carcharias) sightings and attacks on recreational water use patterns in False Bay

Author: Engelbrecht, Tamlyn Date: 2013 White sharks (Carcharodon carcharias) are apex predators that play an important role in the structure and functioning of marine ecosystems. However, despite both their ecological importance and threatened conservation status this species is ... Read more
Infection of two distinct Trichuris sp. genotypes within and among baboon (Papio ursinus) troops on the Cape Peninsula, South Africa

Author: Moxley, Courtney Date: 2013 The chacma baboon (Papio ursinus) population on the Cape Peninsula, South Africa is divided into 16 geographically isolated troops, 14 of which are classified as being commensal with humans. Regular contact with humans in urban and agricultural ... Read more
Pup ontogeny and factors influencing behavioural and morphological variation in naked mole-rats, Heterocephalus glaber (Rodentia, Bathyergidae)

Author: O'Riain, Justin Date: 1996 A long term behavioural study was undertaken on laboratory-reared naked mole-rats. The main objective of the study was to provide a detailed qualitative and quantitative description of the behavioural and morphological development of naked ... Read more
Pup provisioning and artificial pack formation in African wild dog Lycaon pictus in South Africa

Author: Potgieter, Katherine Date: 2009 Wild dog Lacaon pictus are obligate cooperative breeders with nulliparous helpers contributing to the rearing of a dominant pair's young through pup-provisioning and defence agianst predators. Despite the importance of allo-parental care to ... Read more
Seals and Sharks

Author: O'Riain, Justin ; Neary, Tim Date: 12 Sep 2014 In this radio broadcast, Justin o' Riain discusses shark and seal interactions in the False Bay/Seal Island area, focusing on predator-prey interactions and predation behaviour. Additional topics discussed are the seals' response to aggressive ... Read more c b
Seasonal patterns in body temperature and behaviour in Cape ground squirrels, Xerus inauris, living in a semi-arid environment

Author: Wilson, Wendy Anne Date: 2009 Miniature temperature-sensitive data loggers were implanted into the abdominal cavities of 16 free-ranging Cape ground squirrels, Xerus inauris, to investigate seasonal body temperature patterns. Data loggers recorded body temperature at 5-min ... Read more
The spatial ecology of chacma baboons (Papio ursinus) in the Cape Peninusula, South Africa: towards improved management and conservation strategies

Author: Hoffman, Tali S Date: 2011 Competition for space between humans and wildlife is prevalent worldwide. In the Cape Peninsula, South Africa, extensive land transformation has geographically isolated, fragmented and reduced the size of the local chacma baboon population ... Read more

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