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Browsing by Author "Van der Lingen, Carl D"

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Accommodating dynamic oceanographic processes and pelagic biodiversity in marine conservation planning

Author: Grantham, Hedley S ; Game, Edward T ; Lombard, Amanda T ; Hobday, Alistair J ; Richardson, Anthony J ; Beckley, Lynnath E ; Pressey, Robert L ; Huggett, Jenny A ; Coetzee, Janet C ; Van der Lingen, Carl D Date: 2011 Pelagic ecosystems support a significant and vital component of the ocean's productivity and biodiversity. They are also heavily exploited and, as a result, are the focus of numerous spatial planning initiatives. Over the past decade, there ... Read more c b
Assessing the implementation efficacy of an ecosystem approach to Fisheries management in the South African sardine fishery

Author: McGregor, Emily Skye Date: 2015 An Ecosystem Approach to Fisheries management (EAF) offers a holistic approach for sustainable fisheries management by extending the traditional target resources-orientated management (TROM) to include wider social-ecological dimensions of ... Read more
Assessment of the population structure of the South African sardine Sardinops sagax using a multi-method approach and the morphological and molecular characterization of a stock-discriminating digenean parasite biotag of the genus Cardiocephaloides

Author: Uzonnah, Nwamaka Mary-Immaculata Date: 2017 An understanding of the population structure of commercially exploited species is essential for effective fisheries management. Fish stocks are typically identified based on the observation of differences in genetic and/or phenotypic ... Read more
Characterizing and comparing the spawning habitats of anchovy (Engraulis capensis) and sardine (Sardinops sagax) in the Southern Benguela upwelling ecosystem

Author: Twatwa, Nandipha M Date: 2002 The spawmng habitats of anchovy (Engraulis capensis) and sardine (Sardinops sagax) in the southern Benguela upwelling ecosystem were characterized by comparing the data on abundance and distribution of eggs of the two species with environmental ... Read more
Characterizing and comparing the spawning habitats of sardine (Sardinops sagax) and anchovy (Engraulis encrasicolus) in the northern Benguela region

Author: Tjizoo, Mbeurora Beau Date: 2008 Spawning habitats of sardine and anchovy in eastern boundary systems are characterized in an attempt to understand the fluctuations observed in their abundance. These species have developed mechanisms that enable them to survive in these ... Read more
Comparative dietary analysis of four small pelagic fish species from presumed mixed shoals off South Africa's east coast

Author: Mketsu, Qayiso K Date: 2008 Stomach contents of sardine (Sardinops sagax), anchovy (Engraulis encrasicolus), west coast redeye (Etrameus whiteheadi) and east coast redeye (E. teres) were collected from presumed mixed shoals off South Africa's east coast. The stomach ... Read more
Comparing estimates of zooplankton abundance from CUFES samples with those from a vertical bongo net

Author: Sono, Sandisiwe Date: 2008 The accuracy of using CUFES (continuous underway fish egg sampler) as an alternative method to vertical bongo nets for sampling zooplankton abundance and distribution is assessed. Analysis is based on 14 taxonomic groups representing a wide ... Read more
Comparing in situ and satellite temperature data on the Agulhas Bank to understand changes in anchovy (Engroulis encrasicolus) distribution

Author: Schlegel, Robert William Date: 2014 Satellite data have high spatial/ temporal resolution, extensive coverage and are easily accessible, making them a common part of many studies on the oceans. One such important study to use satellite data found a relationship between the ... Read more
Comparing the coarse- and high-resolution horizontal and vertical egg distribution patterns of three clupeiform species in the southern Benguela ecosystem

Author: Dopolo, Mbulelo Tomie Date: 2003 Three fish species, anchovy Engraulis encrasicolus, sardine Sardinops sagax and round herring Etrumeus whiteheadi, co-exist over the western Agulhas Bank (W AB) in the southern Benguela upwelling ecosystem. To date, data on high-resolution ... Read more
Effects of sea surface temperature, adult size and adult condition on spatial variability in egg volumes of three pelagic species from the southern Benguela

Author: Duthie, Tarryn-Lee Date: 2007 Spatial variability in egg volume was investigated for anchovy, sardine and round herring in the southern Benguela in 1998, 2000 and 200 l. The relationship between sea surface temperature (SST) and egg volume was determined and the parental ... Read more
Evaluating the implementation efficacy of an ecosystem approach to fisheries in the South African anchovy fishery

Author: Astor, Nicole Date: 2014 A knowledge-based tool was developed to assess the efficacy of the ecosystem approach to fisheries in the South African anchovy fishery. South Africa has agreed to implement an ecosystem approach to fisheries (EAF) management. The EAF management ... Read more
An individual-based modelling approach to examine life history strategies of sardine Sardinops sagax in the southern Benguela ecosystem

Author: Miller, David Charles Moorcroft Date: 2006 Hypotheses regarding the spawning strategy and recruitment of sardine (Sardinops sagax) in the southern Benguela ecosystem are tested using an individual-based Lagrangian particle tracking model linked with a 3-D hydrodynamic model of the ... Read more
Investigating trophic interactions between parasites and their marine fish hosts using stable isotope analysis

Author: Weston, Mark Jonathan Date: 2018 Parasitism is accepted as being an essential driver in the organization of biological communities. However, although there are estimated to be more parasitic than free-living organisms, parasites have been largely neglected from ecological ... Read more
Laboratory studies on the feeding behaviour of juvenile Cape horse mackerel, Trachurus trachurus capensis

Author: Mapukata, Tembela Date: 2002 Laboratory studies were conducted on juvenile horse mackerel to examine feeding selectivity and rates of zooplankton consumption of two size classes of fish. Fish were fed a variety of natural zooplankton assemblages and sequential subsampling ... Read more
Measurements of the branchial sieve of sardine (Sardinops sagax ocellatus) from the west and south coasts of southern Africa

Author: Idris, Izwandy Date: 2010 Branchial sieves of southern African sardine (Sardinops sagax ocellatus) were collected from three geographical regions along the southern African coast: Namibia, the south coast and the west coast of South Africa. Sardine from Namibia ... Read more
Meristic and morphometric variation among sardine Sardinops sagax around the coast of southern Africa

Author: Wessels, Grea Date: 2009 Meristic counts and morphometric measurements were made on previously frozen sardine Sardinops sagax to determine whether there is a difference in the shape of sardine from different areas around southern Africa. Because freezing influences ... Read more
Modelling the effects of spatio-temporal spawning variability on the transport and retention success of sardine (Sardinops sagax) eggs and larvae around South Africa

Author: McGrath, Alice Date: 2018 The transport and retention of sardine (Sardinops sagax) eggs on the west and south coasts of South Africa were investigated using a Lagrangrian, particle tracking, individual-based model (IBM), coupled with two 3-D hydrodynamic Regional Ocean ... Read more
Multidisciplinary investigation into stock structure of small pelagic fishes in southern Africa

Author: Hampton, Shannon Date: 2014 Three abundant small pelagic fish species co-occur in the Benguela upwelling ecosystem off southern Africa: sardine (Sardinops sagax), anchovy (Engraulis encrasicolus) and round herring (Etrumeus whiteheadi). It is hypothesised that populations ... Read more
The occurrence of a testicular coccidian Eimeria sardinae (Thélohan, 1820) (Reichenow, 1921) in southern Africa sardine Sardinops sagax (Jenyns, 1842)

Author: Ssempa, Nurudean Norman Date: 2013 A total of 553 male southern African sardine Sardinops sagaxcollected between 2010 and 2012 from around southern Africa, including from the northern Benguela off Namibia and from the South African west, south and east coasts, were examined ... Read more
Parasite assemblages of Cape horse mackerel (Trachurus capensis Castelnau, 1861) from the northern and southern Benguela

Author: Le Roux, Jessica Louise Date: 2013 A survey of parasites infecting Cape horse mackerel, Trachurus capensis Castelnau, 1861, from both the southern and northern Benguela ecosystems was conducted to test the hypothesis of discrete stocks in each subsystem. One hundred and twenty ... Read more

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