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Catch and effort of the shore and skiboat linefisheries along the South African Eastern Cape Coast
Item type: Journal Article • Journal: South African Journal of Marine Science • Authors: S. L. Brouwer C. D. BuxtonAn assessment of catch and effort in the Eastern Cape shore and skiboat linefisheries was undertaken between 1994 and 1996 by means of roving creel and access point surveys. Catch-and-effort data were obtained from direct observation of 3 273 shore-fishers,... -
Assessment of the recreational linefishery in selected Eastern Cape estuaries: trends in catches and effort
Item type: Journal Article • Journal: South African Journal of Marine Science • Authors: P. Pradervand D. BairdBoat-based creel surveys were used to collect catch and effort data on the shore- and boat-based linefisheries of the Kromme, Gamtoos, Swartkops, Sundays, Bushmans, Kariega, Kowie and Great Fish estuaries in the Eastern Cape, South Africa, from January 1996 to... -
Mortality estimates and biological reference points for the Natal stumpnose Rhabdosargus sarba (Pisces: Sparidae) in KwaZulu-Natal, South Africa
Item type: Journal Article • Journal: African Journal of Aquatic Science • Authors: NC James BQ Mann PV RadebeA per-recruit stock assessment was undertaken for the sparid Rhabdosargus sarba, which is caught in estuarine and marine shore fisheries in KwaZulu-Natal. Input parameters used in the analyses included age and growth parameters and mortality estimates from catch curves. The... -
An Assessment of the Recreational and Commercial Skiboat Fishery in the Transkei
Item type: Journal Article • Journal: African Journal of Marine Science • Authors: S. T. Fennessy A. M. McDonald B. Q. Mann B. I. EverettA survey of the recreational and commercial skiboat linefishery in the Transkei was conducted from March 1997 to April 1999. Effort by commercial skiboats was substantially higher than by recreational skiboats, and catch rates on commercial boats were much higher... -
Evaluation of Participation in and Management of the Transkei Shore Linefishery
Item type: Journal Article • Journal: African Journal of Marine Science • Authors: B. Q. Mann A. M. McDonald W. H. H. Sauer T. HechtBoth roving creel and aerial surveys were used to quantify fishing effort along the former Transkei coast. A stratified random sampling procedure was used during shore patrols to assess catch and effort, and a questionnaire survey provided information on total... -
Assessment of the Linefishery in Two Urban Estuarine Systems In Kwazulu-natal, South Africa
Item type: Journal Article • Journal: African Journal of Marine Science • Authors: P. Pradervand L. E. Beckley B. Q. Mann P. V. RadebeThe recreational linefisheries in Durban Harbour and the Mgeni Estuary were surveyed using roving creel and access-point surveys during the period January–December 2000. In total, 3 351 shore-anglers and 652 boat-anglers were checked for catch-and-effort information, and 432 shore-anglers were... -
Effects of fishing on the size and dominance structure of linefish of the Cape region, South Africa
Item type: Journal Article • Journal: African Journal of Marine Science • Authors: D. Yemane J. G. Field M. H. GriffithsA dataset of linefish catch, effort and fish size distribution records has been assembled from archives to cover three short periods over the 100 years from 1897 to 1998 in four regions of the former Cape Colony, South Africa. Linefish... -
An economic comparison of the commercial and recreational linefisheries in Namibia
Item type: Journal Article • Journal: African Journal of Marine Science • Authors: J Stage CH KirchnerThe most important Namibian linefish species, the silver kob Argyrosomus inodorus, is currently heavily exploited, and in order to ensure its survival catch restrictions are being introduced. However, kob are exploit ed oth by recreational anglers and by commercial vessels,... -
Validation of the periodicity of opaque zone formation in the otoliths of four temperate reef fish from South Africa
Item type: Journal Article • Journal: African Journal of Marine Science • Authors: WM Potts PD CowleyAn oxytetracycline (OTC) marker was used to validate the periodicity of opaque zone deposition in the otoliths of Chrysoblephus laticeps, Cheimerius nufar, Cymatoceps nasutus (Sparidae) and Dichistius capensis (Dichistiidae) in the wild. Fish were injected with OTC and tagged with... -
Influence of the sardine run on selected nearshore predatory teleosts in KwaZulu-Natal
Item type: Journal Article • Journal: African Journal of Marine Science • Authors: ST Fennessy --- , South Africa P Pradervand --- , New Zealand PA de Bruyn --- , SpainThe relationships between shore-angling catch rates of nearshore predatory teleosts in KwaZulu-Natal, South Africa, and the timing of the sardine run were examined using a multiple regression model. Results showed that catch rates of five (elf Pomatomus saltatrix, garrick Lichia... -
Long-term trends in the recreational shore-fishery for elf Pomatomus saltatrix (Pomatomidae) along the KwaZulu-Natal coast, South Africa
Item type: Journal Article • Journal: African Journal of Marine Science • Authors: JQ Maggs --- , South Africa BQ Mann --- , South Africa RP van der Elst --- , South AfricaElf Pomatomus saltatrix account for between 28% and 80% of the annually recorded recreational shore-angling catch in KwaZulu-Natal, South Africa, and have been subjected to various management regimes over the past 33 years. Management of the elf fishery was amended... -
An assessment of participation, catch and effort in the KwaZulu-Natal shore-based marine linefishery, with comments on management effectiveness
Item type: Journal Article • Journal: African Journal of Marine Science • Authors: SW Dunlop --- , South Africa BQ Mann --- , South AfricaThe primary purpose of this study was to evaluate the effectiveness of current management of the KwaZulu-Natal (KZN) shore-based marine linefishery. Methods used included a stratified-random creel survey and an associated questionnaire survey. The study was undertaken between February 2009... -
Reef fish display station-keeping and ranging behaviour in the Pondoland Marine Protected Area on the east coast of South Africa
Item type: Journal Article • Journal: African Journal of Marine Science • Authors: JQ Maggs --- , South Africa BQ Mann --- , South Africa PD Cowley --- , South AfricaThis study assessed the role of the Pondoland Marine Protected Area (MPA) in the Eastern Cape province of South Africa by evaluating retention versus ‘spillover’ of exploited fishery species that were tagged in a 400 km2 no-take zone of the... -
Evidence of recovery of the linefishery in the Berg River Estuary, Western Cape, South Africa, subsequent to closure of commercial gillnetting
Item type: Journal Article • Journal: African Journal of Marine Science • Authors: K Hutchings BM Clark LJ Atkinson CG AttwoodA total of 248 roving creel surveys along the length of the Berg River Estuary, in the Western Cape, South Africa, recorded 626 shore-angler and 88 boat-angler outings over the period December 2002–November 2005. Catch-and-effort information was obtained from catch... -
Optimisation of underwater visual census and controlled angling methods for monitoring subtidal temperate reef fish communities
Item type: Journal Article • Journal: African Journal of Marine Science • Authors: RH Bennett --- Department of Ichthyology and Fisheries Science, South Africa A Götz --- , South Africa WHH Sauer --- Department of Ichthyology and Fisheries Science, South Africa PD Cowley --- , South Africa RM Palmer --- , South AfricaStandardised sampling protocols for monitoring fish stocks are essential to assess changes in stock status and provide a means to evaluate the effectiveness of fisheries management measures, such as marine protected areas (MPAs). This study aimed to optimise two standard... -
Assessing the suitability of commercial fisheries data for local-scale marine spatial planning in South Africa
Item type: Journal Article • Journal: African Journal of Marine Science • Authors: R Chalmers --- Department of Ichthyology and Fisheries Science, South Africa A Oosthuizen --- Park Planning and Development, South African National Parks, South Africa A Götz --- Department of Ichthyology and Fisheries Science, South Africa A Paterson --- South African Institute for Aquatic Biodiversity, South Africa WHH Sauer --- Department of Ichthyology and Fisheries Science, South AfricaThis study integrates fisheries logbook data with observer and vessel monitoring system (VMS) data in order to assess the accuracy of reported data and to develop high-resolution spatial data suitable for use in local-scale marine spatial planning analyses. Spatial assessments... -
Fish utilization of surf-zones. Are they changing? A case study of the Sheltered, warm-temperate King’s Beach
Item type: Journal Article • Journal: African Zoology • Authors: Gavin M. Rishworth --- Department of Zoology, South Africa Nadine A. Strydom --- Department of Zoology, South Africa Warren Potts --- Department of Ichthyology and Fisheries Science, South AfricaSurf-zone fish communities and their shifts over time are generally poorly understood. The aim of this study was to compare the current surf-zone fish assemblage at King's Beach, South Africa, to a similar study conducted three decades ago, before the... -
An exploratory investigation of the fish communities associated with reefs on the central Agulhas Bank, South Africa
Item type: Journal Article • Journal: African Zoology • Authors: Albrecht Götz --- Elwandle Node, South African Environmental Observation Network (SAEON), South Africa Sven E. Kerwath --- Fisheries Research, Department of Agriculture, South Africa Toufiek Samaai --- Department of Environmental Affairs, South Africa Charlene da Silva --- Fisheries Research, Department of Agriculture, South Africa Christopher G. Wilke --- Fisheries Research, Department of Agriculture, South AfricaDespite their ecological and economic importance, the temperate reef habitats of the central Agulhas Bank remain poorly studied. From 2008 to 2010, multiple stations grouped into six general sites of varying depth, profile and distance offshore, were surveyed. A combination... -
Dark times for dageraad Chrysoblephus cristiceps: evidence for stock collapse
Item type: Journal Article • Journal: African Journal of Marine Science • Authors: D Parker --- Department of Biological Sciences, South Africa H Winker --- South African National Biodiversity Institute, South Africa CG Attwood --- Department of Biological Sciences, South Africa SE Kerwath --- Department of Biological Sciences, South AfricaThe declaration of a state of emergency in the South African linefishery in 2000 has had a positive impact on a few overexploited endemic seabreams (Family Sparidae). However, the population of the reef-dwelling dageraad Chrysoblephus cristiceps has been unresponsive to... -
When plenty is not enough: an assessment of the white stumpnose (Rhabdosargus globiceps) fishery of Saldanha Bay, South Africa
Item type: Journal Article • Journal: African Journal of Marine Science • Authors: D Parker --- Fisheries Management Branch, Department of Agriculture, South Africa SE Kerwath --- Fisheries Management Branch, Department of Agriculture, South Africa TF Næsje --- Norwegian Institute for Nature Research (NINA), Norway CJ Arendse --- South African National Parks, Rondevlei Scientific Services (Garden Route National Park), South Africa FJ Keulder-Stenevik --- Sars Centre for Marine Molecular Biology, Norway K Hutchings --- Anchor Environmental Consultants, South Africa BM Clark --- Anchor Environmental Consultants, South Africa H Winker --- Fisheries Management Branch, Department of Agriculture, South Africa PD Cowley --- South African Institute for Aquatic Biodiversity (SAIAB), South Africa CG Attwood --- Department of Biological Sciences, South AfricaWhite stumpnose Rhabdosargus globiceps is the main target of the linefishery in Saldanha Bay. Increased fishing pressure over the last three decades, particularly by the recreational sector, has led to concerns regarding sustainability of the local white stumpnose stock. The... -
The age and growth of hottentot seabream Pachymetopon blochii before and after the South African linefish state of emergency in 2000
Item type: Journal Article • Journal: African Journal of Marine Science • Authors: MW Farthing --- Department of Ichthyology and Fisheries Science, South Africa AC Winkler --- Department of Ichthyology and Fisheries Science, South Africa K Anderson --- Department of Ichthyology and Fisheries Science, South Africa S Kerwath --- Branch: Fisheries Management, Department of Agriculture, Forestry and Fisheries (DAFF), South Africa C Wilke --- Branch: Fisheries Management, Department of Agriculture, Forestry and Fisheries (DAFF), South Africa WM Potts --- Department of Ichthyology and Fisheries Science, South AfricaThe hottentot seabream Pachymetopon blochii is a small-sized (maximum 2.67 kg) sparid endemic to southern Africa. It is an important target in South Africa's Western Cape traditional linefishery, particularly in the absence of more valuable pelagic species (such as Thyrsites... -
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... -
Monitoring the effects of spatial protection on the reef fish communities of the Pondoland Marine Protected Area, Eastern Cape Province, South Africa
Item type: Journal Article • Journal: African Journal of Marine Science • Authors: BQ Mann --- , South Africa JQ Maggs --- , New Zealand SN Porter --- , South Africa WN Dalton --- , South AfricaMonitoring marine protected areas (MPAs) is critical for evaluating their effectiveness and for improving management. In this study, a single-camera baited remote underwater video system (mono-BRUVS) was deployed quarterly at four sites (10–30-m depths) to quantify the reef fish communities... -
Trends in shore-based angling effort determined from aerial surveys: a case study from KwaZulu-Natal, South Africa
Item type: Journal Article • Journal: African Journal of Marine Science • Authors: BQ Mann --- , South Africa JB Mann-Lang --- , South AfricaUnderstanding the spatiotemporal characteristics of effort is a critical component of managing fisheries. Recreational shore-angling is the largest sector of the linefishery and one of the primary recreational activities undertaken along the coast of KwaZulu-Natal (KZN), South Africa. The aim... -
High genetic diversity and limited spatial structure in an endangered, endemic South African sparid, the red steenbras Petrus rupestris
Item type: Journal Article • Journal: African Journal of Marine Science • Authors: G Gouws --- , South Africa SE Kerwath --- , South Africa WM Potts --- , South Africa NC James --- , South Africa NG Vine --- , South Africa PD Cowley --- , South AfricaThe red steenbras Petrus rupestris is endemic to South Africa, occurring from False Bay in the Western Cape Province to St Lucia in the province of KwaZulu-Natal. This species, the largest member of the family Sparidae, has undergone a substantial... -
Editorial overview: recommendations for the promotion of a resilient linefishery in the Anthropocene
Item type: Journal Article • Journal: African Journal of Marine Science • Authors: WM Potts --- , South Africa CG Attwood --- , South Africa PD Cowley --- , South Africa A-R Childs --- , South Africa AC Winkler --- , South Africa MI Duncan --- , South Africa TS Murray --- , South Africa BQ Mann --- , South Africa JB Mann-Lang --- , South Africa‘Linefish’ is a uniquely South African term used to describe marine fishes that are captured using hook and line. The South African linefishery is a complex socio-ecological system that has a considerable impact on the coastal marine environment while generating... -
Movement patterns and growth rate of the whitespotted wedgefish Rhynchobatus djiddensis in southern Africa based on tag-recapture data
Item type: Journal Article • Journal: African Journal of Marine Science • Authors: GL Jordaan --- , South Africa BQ Mann --- , South Africa R Daly --- , South Africa SW Dunlop --- , South Africa PD Cowley --- , South AfricaInformation on the movement ecology of endangered species is critical for the implementation of effective conservation measures. This study made use of a long-term dart tagging dataset to reveal the movement patterns and growth rates of two size classes of... -
An assessment of the impact of participation in the Oceanographic Research Institute’s Cooperative Fish Tagging Project on angler attitudes and behaviour
Item type: Journal Article • Journal: African Journal of Marine Science • Authors: JB Mann-Lang --- , South Africa BQ Mann --- , South Africa GL Jordaan --- , South Africa R Daly --- , South AfricaScientific output has proven the value of the Oceanographic Research Institute’s Cooperative Fish Tagging Project (ORI-CFTP) to biological and fisheries research, with more than 95 published manuscripts based on data from the ORI-CFTP. This study reviews the project from the...