Growth and movement of the South African abalone Haliotis midae: A reassessment

1995 ◽  
Vol 46 (3) ◽  
pp. 583 ◽  
Author(s):  
RJQ Tarr
Keyword(s):  
South African ◽  
Growth Rates ◽  
Growth Parameters ◽  
Eastern Coast ◽  
Island Population ◽  
Western Coast ◽  
Eastern Cape ◽  
The South ◽  
Significant Difference ◽  
Haliotis Midae

Growth rates of a number of Haliotis midae populations around the South African coast were studied by means of tagging. These populations ranged from the cool waters of the western coast to the more temperate environment of the eastern Cape. Standard von Bertalanffy growth curves were fitted and growth parameters derived. These ranged from 0.19 to 0.25 for K, the average rate at which L∞ is approached, and from 156 to 173 for L∞, the average theoretical maximum length. These indicate far higher growth rates than were previously published for this commercially fished species, and the reasons for this difference are discussed. The expectation that growth rates would be fastest in the warmer eastern Cape waters was not realized, there being no significant difference in growth between the Bird Island population on the eastern coast and the Robben Island population on the western coast. These new growth parameters indicate that H. midae in the commercial fishery grounds is attaining sexual maturity some four years earlier, and the minimum legal size some five years earlier, than previously considered. This has considerable significance for modelling studies presently underway. Movement of a small population of adult H. midae was studied over a three-year period, after which 47% of the original abalone were still present on the study site. Of these, 81.5% still occupied exactly the same position on the rocks. This indicates that H. midae that have located an optimum habitat, and that are not disturbed, tend not to move.

Exploring the South African Government Communication on Land Expropriation without Compensation

2020 ◽  
Vol 72 (1-3) ◽  
Author(s):  
Lungisani Moyo
Keyword(s):  
South Africa ◽  
Food Security ◽  
South African ◽  
Small Scale ◽  
South African Government ◽  
Eastern Cape ◽  
The South ◽  
Land Expropriation ◽  
African Government ◽  
Government Communication

ABSTRACT This paper used qualitative methodology to explore the South African government communication and land expropriation without compensation and its effects on food security using Alice town located in the Eastern Cape Province South Africa as its case study. This was done to allow the participants to give their perceptions on the role of government communication on land expropriation without compensation and its effects on South African food security. In this paper, a total population of 30 comprising of 26 small scale farmers in rural Alice and 4 employees from the Department of Agriculture (Alice), Eastern Cape, South Africa were interviewed to get their perception and views on government communications and land expropriation without compensation and its effects on South African food security. The findings of this paper revealed that the agricultural sector plays a vital role in the South African economy hence there is a great need to speed up transformation in the sector.

Isolation and segregation of 44 microsatellite loci in the South African abalone Haliotis midae L.

2010 ◽  
Vol 41 (3) ◽  
pp. 332-333 ◽  
Author(s):  
R. Slabbert ◽  
J. Hepple ◽  
A. Venter ◽  
S. Nel ◽  
L. Swart ◽  
...  
Keyword(s):  
South African ◽  
Microsatellite Loci ◽  
The South ◽  
Haliotis Midae

Organic acids as potential growth promoters in the South African abalone Haliotis midae

Aquaculture ◽  
2011 ◽  
Vol 321 (3-4) ◽  
pp. 245-251 ◽  
Author(s):  
Neill Jurgens Goosen ◽  
Johann Ferdinand Görgens ◽  
Lourens Francois De Wet ◽  
Hafizah Chenia
Keyword(s):  
Organic Acids ◽  
South African ◽  
The South ◽  
Growth Promoters ◽  
Potential Growth ◽  
Haliotis Midae

scholarly journals Do Managers Of Global Equity Funds Outperform Their Respective Style Benchmarks? Evidence From South Africa

2012 ◽  
Vol 11 (3) ◽  
pp. 269
Author(s):  
Heng-Hsing Hsieh ◽  
Kathleen Hodnett ◽  
Paul Van Rensburg
Keyword(s):  
South African ◽  
Economic Benefits ◽  
Exchange Traded Funds ◽  
The South ◽  
Fund Managers ◽  
Study Results ◽  
Significant Difference ◽  
Equity Funds ◽  
Investment Styles ◽  
Stock Picking

The results of our prior research on internationally-domiciled global equity funds suggest that active managers do not provide economic benefits, in addition to their underlying investment style benchmarks. This finding implies that the performances of global equity funds are derived mainly from the broad investment styles followed by the active managers rather than the stock-picking activities of the managers. We replicate our earlier research to investigate the performances of the six well-established global equity funds in the South African unit trust industry. Our results indicate that four out of the six South African fund managers under examination substantially underperform their passively-replicated style benchmarks. Our prior study results indicate that there is no significant difference between the performances of the internationally-domiciled global equity funds and their respective style benchmarks. By contrast, the stock-picking decisions of the South African fund managers are found to destroy value created by their respective style benchmarks in this study. Our findings suggest that investors who wish to follow particular investment styles would be better off by investing in exchange traded funds (ETF) that passively track the performances of their mandated investment styles in the global equity market with minimal costs.

Reproduction of the sea urchins Echinometra mathaei and Diadema savignyi on the South African eastern coast

1995 ◽  
Vol 46 (4) ◽  
pp. 751 ◽  
Author(s):  
AE Drummond
Keyword(s):  
South African ◽  
Sea Urchins ◽  
Gonad Index ◽  
Extended Period ◽  
Eastern Coast ◽  
The South ◽  
Annual Cycles ◽  
Echinometra Mathaei ◽  
Reproductive Cycles

The reproductive cycles of Echinometra mathaei and Diadema savignyi on the South African eastern coast were investigated by means of gonad index and histological methods. Both species showed annual cycles, with spawning occurring during the summer months (December to March-April), but the degree of gametogenic synchrony differed markedly between the two species. In D. savignyi, gametogenesis within and between sexes was in close synchrony and there was evidence suggesting that repeated spawning with a monthly rhythm occurred. In contrast, gametogenesis in E. mathaei was poorly synchronized and spawning occurred over an extended period.

Revision of the South African genus Neopimus (Coleoptera: Staphylinidae: Paederinae)

Zootaxa ◽  
2019 ◽  
Vol 4577 (2) ◽  
pp. 361
Author(s):  
JIŘÍ JANÁK
Keyword(s):  
South Africa ◽  
South African ◽  
Eastern Cape Province ◽  
Eastern Cape ◽  
The South ◽  
Additional Material ◽  
Kwazulu Natal ◽  
First Time ◽  
African Genus

A revision of the south African genus Neopimus Özdikmen, Demir & Türkeş, 2008 is presented. Based on revision of the type and additional material, three species are recognised. The genus Neopimus is redescribed and all species are described or redescribed and illustrated, two of them for the first time: Neopimus capensis Janák, sp. nov., from Eastern Cape Province, South Africa and N. zulu Janák, sp. nov., from KwaZulu-Natal Province, South Africa. The distribution of the genus is mapped and a key of species is presented. 

The Legitimation Crisis of the South African State

1986 ◽  
Vol 24 (2) ◽  
pp. 187-201 ◽  
Author(s):  
Kogila Moodley
Keyword(s):  
South African ◽  
African State ◽  
State Violence ◽  
Eastern Cape ◽  
The South ◽  
Legitimation Crisis ◽  
Black Police ◽  
South African Police

On 21 March 1985, the twenty-fifth anniversary of the infamous Sharpevile incident, South African police, without provocation or warning, killed 20 unarmed black marchers at Langa in the Eastern Cape. Most were shot in the back. The outnumbered contingent of white and black police with two armoured vehicles, felt that the blacks, on their way to a funeral, would threaten the white township.The repetition of this crudest form of state violence against politicised youngsters and workers, threatened by recession after two-and-a-half decades of anti-apartheid opposition, suggests that little has changed in the repression by a minority ré. The rulers command the guns and the subordinates are left wiht no alternative but to submit or perish.

scholarly journals Black economic empowerment in the Eastern Cape automotive industry: Challenges and policies

2014 ◽  
Vol 10 (4) ◽  
pp. 490-503
Author(s):  
GS Horn
Keyword(s):  
South Africa ◽  
South African ◽  
Automotive Industry ◽  
Automobile Industry ◽  
Economic Empowerment ◽  
Eastern Cape ◽  
The South ◽  
Business Skills ◽  
Black Economic ◽  
Black Economic Empowerment

Original Equipment Manufacturers (OEMs) in South Africa are under pressure to meet the Black Economic Empowerment (BEE) policies and charters of the South African government by giving BEE suppliers additional opportunities to tender. However, many BEE suppliers, due to being historically disadvantaged, experience various problems which make it difficult for them to win tenders, including lack of finances, opportunities to tender and management and business skills, and problems with quality and capacity. This paper outlines these practical problems experienced by BEE suppliers, the effects of these problems on risk and complexity in the South African automotive industry and policies that address these problems and assist BEE suppliers to become A-rated suppliers. Data for the paper was obtained from interviews with: senior employees of the AIDC involved with supplier development training; middle managers of supplier quality and development departments at the three OEMs in the Eastern Cape Province; and BEE and small suppliers identified to undergo AIDC training. The findings of the study are that unless sufficient training is given to BEE and potential BEE suppliers, supply to OEMs will remain in the hands of existing established suppliers and very little transformation will occur within the automobile industry in South Africa.

An overview of the South African tangle-veined flies (Diptera: Nemestrinidae), with an annotated key to the genera and a checklist of species

Zootaxa ◽  
2006 ◽  
Vol 1277 (1) ◽  
pp. 39 ◽  
Author(s):  
DAVID A. BARRACLOUGH
Keyword(s):  
South African ◽  
Taxonomic Revision ◽  
Family Characteristics ◽  
Western Cape ◽  
Eastern Cape ◽  
The South ◽  
African Species ◽  
North West ◽  
Kwazulu Natal ◽  
Closed Canopy

The South African Nemestrinidae are reviewed. Regional family characteristics, biology and the importance of long-proboscid species in pollination biology are discussed. Long-proboscid species (proboscis 15 mm or longer) are important pollinators in most provinces, but particularly in the Western Cape; all have specialised pollination interactions with long-tubed flower species. Five pollination guilds centered on long-proboscid species are briefly discussed.        A detailed, annotated key to the six genera is presented; in it particular attention is given to the problematic distinction between Prosoeca Schiner and Stenobasipteron Lichtwardt. A checklist of all described species considered to have a South African provenance is provided. A total of 43 described species is recorded in the following genera: Moegistorhynchus Macquart (4 species); Prosoeca (35 species); Stenobasipteron (1 species); Atriadops Wandolleck (1 species); Nycterimyia Lichtwardt (1 species); Trichopsidea Westwood (1 species).        Moegistorhynchus is restricted to the west coast (Western Cape, Northern Cape). Three of its species have a remarkably elongate proboscis, the best known and most widespread being M. longirostris (Wiedemann, 1819). Its proboscis reaches 90 to 100 mm in length in some specimens, this being the longest proboscis of all known Diptera. Two new species have been identified in the fauna.        Prosoeca dominates the fauna, and is the only genus likely to be represented in all nine provinces. It appears to occur in all habitats except closed-canopy forest. Prosoeca major Bezzi, 1924 is newly synonymised with P. robusta Bezzi, 1924. The likely South African provenance of P. nigripes (Macquart, 1840) is confirmed. Nemestrina obscura Westwood, 1835, previously referred to Prosoeca, is considered not to be an Afrotropical species. Prosoeca rhodesiensis Bequaert, 1925a, is recorded from South Africa for the first time.        Although Stenobasipteron is restricted to only one named South African species, namely S. wiedemanni Lichtwardt, 1910 from the Eastern Cape and KwaZulu-Natal, several undescribed species occur in Mpumalanga and Limpopo. Stenobasipteron wiedemanni occurs in closed-canopy forest, but species from Mpumalanga may occur in other habitats such as grassland and savanna.        There are at least two species of Atriadops, one almost certainly being A. vespertilio (Loew, 1858). The genus is recorded from the Western Cape, Eastern Cape, KwaZulu-Natal, Gauteng and Mpumalanga. A taxonomic revision is recommended. Nycterimyia is represented by one species only, namely N. capensis Bezzi, 1924 from KwaZulu-Natal and Limpopo. Trichopsidea is represented by one species, T. costata (Loew, 1858), recorded from North West, Gauteng and Limpopo.

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