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Transit station or destination? Attendance patterns, movements and abundance estimate of humpback whales off west South Africa from photographic and genotypic matching
Item type: Journal Article • Journal: African Journal of Marine Science • Authors: J Barendse --- , South Africa PB Best --- , South Africa M Thornton --- , South Africa SH Elwen --- , South Africa HC Rosenbaum --- , USA I Carvalho --- , USA C Pomilla --- , USA TJQ Collins --- , USA MA Meÿer --- , South Africa RH Leeney --- , UKHumpback whales Megaptera novaeangliae found off west South Africa (WSA) are known to display an atypical migration that may include temporary residency and feeding during spring and summer. At a regional scale there is uncertainty about how these whales relate... -
Inter-island movements of common bottlenose dolphins Tursiops truncatus among the Canary Islands: online catalogues and implications for conservation and management
Item type: Journal Article • Journal: African Journal of Marine Science • Authors: M Tobeña --- Departamento de Biología Animal, Spain A Escánez --- Departamento de Biología Animal, Spain Y Rodríguez --- Departamento de Biología Animal, Spain C López --- Departamento de Biología Animal, Spain F Ritter --- MEER eV, Germany N Aguilar --- Departamento de Biología Animal, SpainA total of 313 individual common bottlenose dolphins Tursiops truncatus was photo-identified in four Special Areas of Conservation (SACs) in the western Canary Islands, Spain (El Hierro, La Palma, La Gomera and Tenerife), over a 10-year period (2001–2011). Of these,... -
Movement pattern and home range of Roman Chrysoblephus laticeps
Item type: Journal Article • Journal: African Journal of Marine Science • Authors: SE Kerwath A Götz CG Attwood PD Cowley WHH SauerThe movement behaviour of adult Roman Chrysoblephus laticeps (Sparidae) was investigated using mark-and-recapture techniques in the Goukamma Marine Protected Area (GMPA) and the Tsitsikamma National Park (TNP) on the South African temperate south coast. The study was designed to improve... -
Breeding success of African penguins Spheniscus demersus at Dassen Island, especially after oiling following the Apollo Sea spill
Item type: Journal Article • Journal: African Journal of Marine Science • Authors: AC Wolfaardt LG Underhill DC Nel AJ Williams J VisagieThe reproductive success of African penguins Spheniscus demersus at Dassen Island from 1994 to 2000 was variable, but much higher than previously reported figures for the species. Breeding success was positively related to the abundance of anchovy Engraulis encrasicolus and... -
Intra-archipelago moult dispersion of southern elephant seals at the Prince Edward Islands, southern Indian Ocean
Item type: Journal Article • Journal: African Journal of Marine Science • Authors: WC Oosthuizen --- Mammal Research Institute, Department of Zoology and Entomology, South Africa MN Bester --- Mammal Research Institute, Department of Zoology and Entomology, South Africa PJN de Bruyn --- Mammal Research Institute, Department of Zoology and Entomology, South Africa GJG Hofmeyr --- Mammal Research Institute, Department of Zoology and Entomology, South AfricaDuring three summer surveys at Prince Edward Island (PEI), southern Indian Ocean (2001, 2004 and 2008), 416 southern elephant seals Mirounga leonina were inspected for identification tags. In all, 42 seals that had been tagged as weaned pups at their... -
Distribution, behaviour and photo-identification of Atlantic humpback dolphins Sousa teuszii off Flamingos, Angola
Item type: Journal Article • Journal: African Journal of Marine Science • Authors: CR Weir --- , UKAtlantic humpback dolphins Sousa teuszii are a priority for research due to their restricted geographic range, narrow ecological niche and the paucity of existing information. The distribution and behaviour of S. teuszii off Flamingos, southern Angola, was investigated during summer... -
Doctors and strike action: Can this be morally justifiable?
Item type: Journal Article • Journal: South African Family Practice • Authors: GA Ogunbanjo --- Department of Family Medicine and PHC, Faculty of Health Sciences, D Knapp van Bogaert --- Steve Biko Centre for Bioethics, Faculty of Health Sciences,Strikes are rare events in the history of medicine. Mainly their occurrences have been initiated by junior doctors as is the case in South Africa. In the most recent strike action by South African doctors, the root cause appears to... -
Roost temperature and fidelity of Wahlberg’s epauletted fruit bat, Epomophorus wahlbergi, in an urban environment
Item type: Journal Article • Journal: African Zoology • Authors: Dominic P. Rollinson --- School of Life Sciences, University of KwaZulu-Natal, South Africa Joy C. Coleman --- School of Life Sciences, University of KwaZulu-Natal, South Africa Colleen T. Downs --- School of Life Sciences, University of KwaZulu-Natal, South AfricaGenerally,Wahlberg’s epauletted fruit bat (Epomophorus wahlbergi) roost in trees or under the eaves of buildings. This study investigated the roosting dynamics of E. wahlbergi in the urban environment of Pietermaritzburg, South Africa. To determine roost fidelity bats were radiotracked to... -
Solitary individuals in populations of the group-living lizard Ouroborus cataphractus: voluntary or forced?
Item type: Journal Article • Journal: African Zoology • Authors: P. le Fras N. Mouton --- Department of Botany & Zoology, South Africa Janine L. Glover --- Department of Botany & Zoology, South Africa Alexander F. Flemming --- Department of Botany & Zoology, South AfricaWe compared crevice fidelity among solitary and group-living individuals in a population of the group-living lizard Ouroborus cataphractus. We also compared the incidence of solitary individuals between the sexes and different seasons.We surveyed suitable rocky areas at two sites in... -
How do African Black Oystercatchers Haematopus moquini recruit into high-density populations?
Item type: Journal Article • Journal: Ostrich: Journal of African Ornithology • Authors: Douglas Loewenthal --- Percy FitzPatrick Institute of African Ornithology, DST–NRF Centre of Excellence, South Africa Dane M Paijmans --- Percy FitzPatrick Institute of African Ornithology, DST–NRF Centre of Excellence, South Africa Philip AR Hockey --- Percy FitzPatrick Institute of African Ornithology, DST–NRF Centre of Excellence, South AfricaTheoretical and empirical studies of oystercatchers both suggest that levels of adult site fidelity, natal philopatry and age-at-first-breeding are interrelated consequences of life-history decisions made by potential breeders. All are fundamental to explaining population dynamics and have important conservation implications... -
Photo-identification and habitat use of Atlantic humpback dolphins Sousa teuszii around the Río Nuñez Estuary in Guinea, West Africa
Item type: Journal Article • Journal: African Journal of Marine Science • Authors: CR Weir --- Ketos Ecology, UKEcological data for the Atlantic humpback dolphin Sousa teuszii are scant. Six on-effort Sousa teuszii sightings were recorded during 817.6 km of boat-based effort in the Río Nuñez region of Guinea during October and November 2013. Two incidental sightings were also... -
Using an unbaited stationary video system to investigate the behaviour and interactions of bull sharks Carcharhinus leucas under an aquaculture farm
Item type: Journal Article • Journal: African Journal of Marine Science • Authors: N Loiseau --- Institut de Recherche pour le Développement [IRD], UMR ENTROPIE (IRD, Universite de La Réunion, CNRS), Laboratoire d'Excellence [LABEX] CORAIL, France JJ Kiszka --- Marine Sciences Program, Department of Biological Sciences, USA T Bouveroux --- Coastal and Marine Research Institute, Nelson Mandela Metropolitan University, South Africa MR Heithaus --- Marine Sciences Program, Department of Biological Sciences, USA M Soria --- IRD – UMR EME, France P Chabanet --- Institut de Recherche pour le Développement [IRD], UMR ENTROPIE (IRD, Universite de La Réunion, CNRS), Laboratoire d'Excellence [LABEX] CORAIL, FranceBull sharks Carcharhinus leucas are common along the coast of Reunion Island (South-West Indian Ocean) and were suspected to aggregate in the vicinity of an aquaculture farm in Saint-Paul Bay on the west coast. In order to understand the behaviour... -
Philopatry and dispersal of juvenile leervis Lichia amia (Teleostei: Carangidae) tagged in a warm-temperate South African estuary
Item type: Journal Article • Journal: African Journal of Marine Science • Authors: T Murray --- South African Institute for Aquatic Biodiversity, South Africa P Cowley --- South African Institute for Aquatic Biodiversity, South Africa A-R Childs --- Department of Ichthyology and Fisheries Science, South Africa R Bennett --- South African Institute for Aquatic Biodiversity, South AfricaUnderstanding and characterising movement and area-use patterns of fishes within estuaries, as well as understanding the degree of connectivity between estuaries and the marine environment, can provide important insights into a species’ ecology, which is fundamental for effective management and... -
Quantifying the largest aggregation of giant trevally Caranx ignobilis (Carangidae) on record: implications for management
Item type: Journal Article • Journal: African Journal of Marine Science • Authors: R Daly --- Port Elizabeth Museum at Bayworld, South Africa CAK Daly --- Save Our Seas Foundation (SOSF) D’Arros Research Centre, Switzerland RH Bennett --- South African Institute for Aquatic Biodiversity (SAIAB), South Africa PD Cowley --- South African Institute for Aquatic Biodiversity (SAIAB), South Africa MAM Pereira --- Centro Terra Viva, Mozambique JD Filmalter --- South African Institute for Aquatic Biodiversity (SAIAB), South AfricaThe giant trevally Caranx ignobilis (Forsskål) is an important apex predatory fish typically associated with coral reef communities. It is prized in recreational and commercial fisheries, yet little is known about its aggregation dynamics and susceptibility to fishing pressure. This... -
Movement patterns of an endemic South African sparid, the black musselcracker Cymatoceps nasutus, determined using mark-recapture methods
Item type: Journal Article • Journal: African Journal of Marine Science • Authors: TS Murray --- South African Institute for Aquatic Biodiversity (SAIAB), South Africa PD Cowley --- South African Institute for Aquatic Biodiversity (SAIAB), South Africa BQ Mann --- Oceanographic Research Institute (ORI), South Africa JQ Maggs --- Oceanographic Research Institute (ORI), South Africa G Gouws --- South African Institute for Aquatic Biodiversity (SAIAB), South AfricaThis study made use of data from three long-term fish tagging projects along the South African coastline to investigate the movement behaviour of the endemic black musselcracker Cymatoceps nasutus (Sparidae). From 1984 to 2016, a total of 3 430 C... -
Movements and growth rates of the broadnose sevengill shark Notorynchus cepedianus in southern Africa: results from a long-term cooperative tagging programme
Item type: Journal Article • Journal: African Journal of Marine Science • Authors: TM Engelbrecht --- , South Africa AA Kock --- , South Africa MJ O’Riain --- , South Africa BQ Mann --- , South Africa SW Dunlop --- , South Africa A Barnett --- , AustraliaTop predators are important components of healthy ecosystems but are at risk of overexploitation due to insufficient data on life-history characteristics and population dynamics to guide management. We investigated the movements and growth rates of the broadnose sevengill shark Notorynchus... -
Multiple GPS fix intervals show variations in the manner African White-backed Vultures Gyps africanus utilise space
Item type: Journal Article • Journal: Ostrich: Journal of African Ornithology • Authors: Mark Zvidzai --- , Zimbabwe Fadzai Michelle Zengeya --- , Zimbabwe Mhosisi Masocha --- , Zimbabwe Henry Ndaimani --- , Zimbabwe Amon Murwira --- , ZimbabweApplication of spatial data is becoming increasingly important as a tool for mapping and understanding space utilisation patterns especially for critically endangered species. In this study, we tested how variation in the GPS fix interval may influence space utilisation patterns... -
Movement behaviour of catface rockcod Mycteroperca (Epinephelus) andersoni (Epinephelidae) off the eastern seaboard of southern Africa
Item type: Journal Article • Journal: African Journal of Marine Science • Authors: BQ Mann --- , South Africa R Daly --- , South Africa GL Jordaan --- , South Africa WN Dalton --- , South Africa ST Fennessy --- , South AfricaMovement behaviour of the endemic epinephelid Mycteroperca andersoni (formerly allocated to genus Epinephelus) along the east coast of southern Africa was investigated using both conventional dart tagging and passive acoustic telemetry. Results from both methods showed that this species is... -
Making sense of fidelity: young Africans’ cross-national and longitudinal representations of fidelity and infidelity in their HIV-related creative narratives, 1997–2014
Item type: Journal Article • Journal: SAHARA-J: Journal of Social Aspects of HIV/AIDS • Authors: Robyn Singleton --- Banyan Communications, USA Manon Billaud --- Rollins School of Public Health at Emory University, USA Haley McLeod --- Rollins School of Public Health at Emory University, USA Georges Tiendrebeogo --- Laafi Consulting, Burkina Faso Fatim Dia --- Rollins School of Public Health at Emory University, USA Chris Obong’o --- PATH, Kenya Siphiwe Nkambule-Vilakati --- Super Buddies Club, Swaziland Benjamin Mbakwem --- Community and Youth Development Initiatives, Nigeria Gaelle Sabben --- Rollins School of Public Health at Emory University, USA Kate Winskell --- Rollins School of Public Health at Emory University, USAMutual fidelity and partner reduction have been identified as key behavioural strategies to prevent HIV transmission in sub-Saharan Africa, particularly following recognition of the role that multiple concurrent sexual partnerships play in driving generalised HIV epidemics. We analysed social representations... -
The effect of intergroup distance on group fidelity in the group‐living Lizard, Cordylus cataphractus
Item type: Journal Article • Journal: African Journal of Herpetology • Authors: Eloise Costandius --- Stellenbosch University, South Africa P.Le FrasN. Mouton --- Stellenbosch University, South Africa AlexanderF. Flemming --- Stellenbosch University, South AfricaThe effect of intergroup distance on group fidelity in the Armadillo Lizard, Cordylus cataphractus, was studied in the Lambert's Bay/Graafwater area, South Africa. One hundred and six individuals from 27 groups were marked and recaptured regularly from May until September... -
“Sex is sex, marriage is marriage”: infidelity amongst married women in Shamva, Zimbabwe
Item type: Journal Article • Journal: Anthropology Southern Africa • Authors: Patience Chadambuka --- Midlands State University, Zimbabwe André Pelser --- University of the Free State, South Africa Victor Muzvidziwa --- Midlands State University, ZimbabweMany African societies adhere to a strong patriarchal norm as regards sexual relations, one that is unforgiving of female infidelity yet tolerates men’s extramarital affairs and even incorporates these into culture. This study reveals that, contrary to traditional assumptions defining... -
Movement patterns of Natal seacatfish Galeichthys troworum (Ariidae) tagged in the Pondoland Marine Protected Area, Eastern Cape, South Africa
Item type: Journal Article • Journal: African Journal of Marine Science • Authors: BQ Mann --- Oceanographic Research Institute, South Africa K Cox --- , South Africa GL Jordaan --- Oceanographic Research Institute, South Africa R Daly --- Oceanographic Research Institute, South AfricaA tag-recapture study was undertaken on the Natal seacatfish Galeichthys troworum in the Pondoland Marine Protected Area (PMPA) on the east coast of South Africa. A total of 473 fish were tagged over a period of 8 years, and 136... -
Movement and growth of the spotted gully shark Triakis megalopterus in South African waters
Item type: Journal Article • Journal: African Journal of Marine Science • Authors: BQ Mann --- Oceanographic Research Institute (ORI), South Africa GL Jordaan --- Oceanographic Research Institute (ORI), South Africa WN Dalton --- Oceanographic Research Institute (ORI), South Africa R Daly --- Oceanographic Research Institute (ORI), South Africa M Soekoe --- Reel Science Coalition, South Africa WM Potts --- Rhodes University, South Africa MJ Smale --- Zoology Department and Institute for Coastal and Marine Research, Nelson Mandela University, South Africa L Swart --- Fisheries and the Environment (DFFE), South AfricaThe movement and growth of spotted gully sharks Triakis megalopterus (family Triakidae) along the coast of South Africa were investigated using external dart tagging. Of a total of 7 211 sharks tagged, 657 (9.1%) were recaptured over a 37-year period,... -
Distribution and movement patterns of white musselcracker Sparodon durbanensis, a South African endemic seabream
Item type: Journal Article • Journal: African Journal of Marine Science • Authors: BQ Mann --- Oceanographic Research Institute (ORI), South Africa GL Jordaan --- Oceanographic Research Institute (ORI), South Africa R Daly --- Oceanographic Research Institute (ORI), South Africa WN Dalton --- Oceanographic Research Institute (ORI), South Africa PA Watt-Pringle --- Oceanographic Research Institute (ORI), South Africa K Hewett --- Rhodes University, South Africa WM Potts --- Rhodes University, South AfricaThe white musselcracker Sparodon durbanensis (family Sparidae) is a highly prized shore angling and spearfishing species. This study investigated its movement behaviour along the southeastern seaboard of South Africa, using tag-recapture data. A total of 3 378 S. durbanensis were... -
Optimizing real-time stereo image retargeting for AR/VR: Lightweight disparity CNNs on AI-Driven edge architectures
Item type: Journal Article • Journal: African Journal of Science, Technology, Innovation and Development • Authors: Mahendra T. Jagtap --- University of South Florida, Muma College of Business (Sarasota-Manatee Campus), USA Bhuvan Unhelkar --- University of South Florida, USA Pravin R. Kshirsagar --- JD College of Engineering and Management, India Nitin Rakesh --- Symbiosis Institute of Technology, India R. Thiagarajan --- VelTech multiTech Dr. Rangarajan Dr. Sakunthala Engineering College, India Vishal Patil --- Loknete Gopinathji Munde Institute of Engineering Education & Research, Nashik and SPPU, IndiaReal-time stereo image retargeting for augmented reality (AR) and virtual reality (VR) necessitates precise per-pixel depth estimation and ultra-low latency performance on resource-limited edge devices. Current disparity convolutional neural networks (CNNs) and retargeting pipelines are unable to meet these demanding... -
Residency, site affinity and coastal movements of the southern African endemic spotted gully shark Triakis megalopterus
Item type: Journal Article • Journal: African Journal of Marine Science • Authors: E Cottrant --- South African Shark Conservancy, South Africa JH Morrison --- South African Shark Conservancy, South Africa C Elston --- South African Institute for Aquatic Biodiversity (SAIAB), South Africa TS Murray --- South African Institute for Aquatic Biodiversity (SAIAB), South Africa NJ Drobniewska --- South African Shark Conservancy, South Africa LG Underhill --- Department of Biological Sciences, University of Cape Town, South Africa N Hammerschlag --- Rosenstiel School of Marine, Atmospheric, and Earth Science, University of Miami, United States PS Albano --- Rosenstiel School of Marine, Atmospheric, and Earth Science, University of Miami, United States ME McCord --- South African Shark Conservancy, South Africa PD Cowley --- South African Institute for Aquatic Biodiversity (SAIAB), South Africa C Fallows --- Apex Shark Expeditions, South Africa TG Paulet --- South African Shark Conservancy, South AfricaRising global concern regarding the conservation and management of shark species makes it essential to identify key ecological species to guide conservation efforts, especially species with more restricted distributions such as endemic species. The southern African endemic spotted gully shark...
