scholarly journals Alien animals in South Africa – composition, introduction history, origins and distribution patterns

Bothalia ◽  
2017 ◽  
Vol 47 (2) ◽  
Author(s):  
Mike D. Picker ◽  
Charles L. Griffiths

Background: There is no comprehensive inventory and analysis of the composition, distribution, origin and rate of introduction of the alien fauna of South Africa. Objectives: To provide such an analysis to facilitate effective ecological management, and compile a comprehensive inventory of introduced animal species across major habitats. Methods: All available databases and references were used to compile the inventory, forming the basis of subsequent analyses. A graduated map was produced to identify concentrations of alien species.Results: Of the 571 alien animal species analysed, insects comprised the largest component (53%, 300 species), followed by molluscs (9%, 51 species), annelids (8%, 48 species), arachnids (7%, 41 species), vertebrates (7%, 41 species) and crustaceans (6%, 36 species). Vertebrate introductions (88%) were largely intentional, whereas 84% of invertebrate introductions were unintentional. Conclusions: Almost all marine and most terrestrial alien species were accidentally introduced, whereas freshwater introductions were almost entirely intentional. Some 13% had not spread significantly, 16% had spread significantly and 71% had become fully invasive. Vertebrate introductions virtually ceased after the 1950s, but rate of introduction of invertebrates remained linear. The overall rate of species accumulation was fairly low until 1880, but accelerated sharply thereafter. Most terrestrial alien species originated from Europe (28.6%) and Asia (25.0%) and the lowest proportion (6.1%) from Africa. Freshwater introductions largely originated from the Americas, with few from Africa. The most invaded areas were around Cape Town, (up to 162 introduced species/half-degree grid cell), followed by Gauteng and Durban

2017 ◽  
Vol 6 (2) ◽  
pp. 328
Author(s):  
Şahin KIZILTAŞ

The world has gone through a trauma for centuries. Almost all nations have experienced all sorts of traumatic events and feelings in this period. Among those nations, the black seem to be the most unlucky and ill-fated suffered from traumatic disasters. However, among those black nations, the natives of South Africa have been the most piteous and wretched ones. Their misfortune began in 1652 with the arrival of white colonists in the country. Since then, the oppression and persecution of white European colonists and settlers on natives increasingly continued. Those native people were displaced from the lands inherited from their ancestors a few centuries ago. They were not allowed to have equal rights with white people and to share same environment in public premises. The natives have put up resistance against the racial and colonial practices of white settlers which excluded them from all living spaces; yet, they could not manage, even they came into power in 1994. Today their exclusion and violence victimization still go on and they are still subjected to inferior treatment by (post)colonial dominant white powers. As a white intellectual and writer who had European origins, Nadine Gordimer witnessed the repression and torturing of European settlers on native people in South Africa. In her novels, she has reflected the racial discrimination practiced by white people who have considered of themselves in a superior position compared to the black. This study aims to focus on how Gordimer has reflected the trauma which the black people of South Africa have experienced as a consequence of racist practices. This will contribute to clarify and get across the real and true-life traumatic narratives of native people in the colonized countries.


Forests ◽  
2021 ◽  
Vol 12 (2) ◽  
pp. 205
Author(s):  
Shailes Bhattrai ◽  
Uma Karki ◽  
Sanjok Poudel

Despite the huge potential of using woodlands for small ruminant grazing in the southeast US, unmanaged understory shrubs grown beyond animals’ access minimize the utilization of such vegetation. This study aimed to determine the effect of vegetation height and diurnal period on the behavior and distribution patterns of goats and sheep in woodlands around summer. The study was conducted in six woodland plots (0.4 ha each) comprising southern pines and non-pine (non-target) plant species. Non-pine plants in each study plot were assigned to four treatments: cut to 0 m, 0.9 m, or 1.5 m from the ground level or left uncut (control). Cut plant stubs were allowed to regrow to full canopy before stocking animals. Eight Kiko wethers and five Katahdin rams were rotationally stocked in separate plots, and their diurnal (dawn–dusk) behaviors and distribution patterns were monitored when they were in each plot (three plots per animal species) around the summer of 2018. Animal behavior data were analyzed using the general linear model (GLM) procedure with multivariate analysis of variance (MANOVA) in SAS, while animal distribution pattern and weather data were analyzed in SAS using a GLM procedure and the distribution evenness index (DEI) using the Kruskal–Wallis rank-sum test in R. Level of significance was set at 5%. Both animal species visited the control area the least. Wethers browsed predominantly in areas where non-pine plants were cut to 0.9 m from the ground level, and rams grazed mostly in areas where non-pine plants were cut to the ground level, mostly during the post-midday period. Browsing was the dominant feeding behavior of wethers (39% browsing vs. 4% grazing), while rams’ feeding behavior was dominated with grazing (24% grazing vs. 12% browsing). Lying was a predominant diurnal behavior in both wethers (46%) and rams (35%), mostly during the midday period. Wethers had a higher value for DEI than rams during the morning and post-midday periods. This study established that (1) the utilization of woodland understory foliage by small ruminants can be increased by lowering plant height, and (2) both vegetation characteristics and diurnal period are important factors for influencing small ruminants’ behavior while stocked in woodlands around summer.


2022 ◽  
Vol 146 ◽  
pp. 417-425
Author(s):  
Moleseng Claude Moshobane ◽  
Bester Tawona Mudereri ◽  
Mukundi Mukundamago ◽  
Tavengwa Chitata

Author(s):  
V. A. Andreeva

The purpose of the work was to analyze the frequency of chromosomal instability in different species of agricultural animals in Western Siberia on the basis of literature data. The analysis of the literature on the topic of somatic chromosomal instability in agricultural animals has been carried out. Despite the stability of the chromosome set, deviations from it are quite common. It is noteworthy that chromosomal instability is characteristic of almost all individuals in the population and serves as an important indicator for assessing the natural mutability of chromosomes. It has been found if an aberration appeared in one tissue, it is very likely to occur in others. It has been noted that somatic chromosomal instability occurs in animals with reduced reproductive function, as well as those suffering from any pathology. For example, in calves with parakeratosis the increase in the frequency of chromatid and isochromatid breaks has been found. Analysis of the frequency of aberrations in sires, which differ in the level of perinatal mortality of offspring revealed the increased percentage of offspring mortality in fathers with the large number of chromosomal disorders. Therefore, low fertilization, spontaneous abortions and stillbirths may be indications for karyotypic analysis. It has been revealed that the lability of the karyotype is inherent in all animal species, regardless of the species, sex and age, as well as the morphofunctional state. The data on some types of somatic chromosomal instability in different types of farm animals in Western Siberia has been presented. Such indicators as the frequency of polyploidy, the number of cells with fragments of chromosomes, as well as single and paired fragments of chromosomes has been given. Different types of chromosomal instability varied depending on the animal species and climate zone. The presented data can be accepted as a physiological norm and used in veterinary medicine and animal science.


2021 ◽  
Vol 18 (1) ◽  
Author(s):  
France Khutso Lavhelani Kgobe

This paper explores the potency of rural cooperatives for the effective planning and implementation of rural strategies to address poverty. Rural cooperatives function as a participatory approach that provides the potential to equip and empower people in rural areas with various skills. Hence, rural cooperatives represent the means and strategies to unshackle rural people from the vicious circle of poverty. The contestation about a deadlock of rural development has become pertinent in the recent and ongoing political transformation in South Africa. This paper is grounded on the social capital theory and its ideals. As such, it depends on a literature review for its premise, argument, crux and purpose, as well as drawing up results and conclusions. The paper gathers information in respect of various scholars’ notions on rural cooperatives and rural development from related articles, journals and books. The paper reveals that where the South African government is confronted and characterised by some form of upheaval and service delivery challenges, so rural cooperatives are fit to capacitate citizens to avoid depending on the government for scarce resources. The paper further reveals that rural cooperatives are deemed to ameliorate the long-standing patterns of developmental backlogs in almost all South African municipalities. The conclusion that can be made from this paper is that the authentic promotion of rural development in the formulation of a well-informed legislative framework, that is clear and unambiguous, can deal effectively with the challenges of rural cooperatives.


2013 ◽  
Vol 85 (2) ◽  
pp. 727-736 ◽  
Author(s):  
GERUZA L. MELO ◽  
BARBARA MIOTTO ◽  
BRISA PERES ◽  
NILTON C. CACERES

Each animal species selects specific microhabitats for protection, foraging, or micro-climate. To understand the distribution patterns of small mammals on the ground and in the understorey, we investigated the use of microhabitats by small mammals in a deciduous forest of southern Brazil. Ten trap stations with seven capture points were used to sample the following microhabitats: liana, fallen log, ground litter, terrestrial ferns, simple-trunk tree, forked tree, and Piper sp. shrubs. Seven field phases were conducted, each for eight consecutive days, from September 2006 through January 2008. Four species of rodents (Akodon montensis, Sooretamys angouya, Oligoryzomys nigripes and Mus musculus) and two species of marsupials (Didelphis albiventris and Gracilinanus microtarsus) were captured. Captured species presented significant differences on their microhabitat use (ANOVA, p = 0.003), particularly between ground and understorey sites. Akodon montensis selected positively terrestrial ferns and trunks, S. angouya selected lianas, D. albiventris selected fallen trunks and Piper sp., and G. microtarsus choose tree trunks and lianas. We demonstrated that the local small-mammal assemblage does select microhabitats, with different types of associations between species and habitats. Besides, there is a strong evidence of habitat selection in order to diminish predation.


Molecules ◽  
2018 ◽  
Vol 23 (11) ◽  
pp. 2759 ◽  
Author(s):  
Samuel Odeyemi ◽  
Graeme Bradley

The use of medicinal plants for the management of diabetes mellitus is on the rise in the developing countries, including South Africa. There is increasing scientific evidence that supports the claims by the traditional healers. In this review, we compare the families of previously reported anti-diabetic plants in the Eastern Cape by rating the anti-diabetic activity, mode of action and also highlight their therapeutic potentials based on the available evidence on their pharmacology and toxicity. Forty-five plants mentioned in ethnobotanical surveys were subjected to a comprehensive literature search in the available electronic databases such as PubMed, ScienceDirect, Google Scholar and Elsevier, by using “plant name” and “family” as the keywords for the primary searches to determine the plants that have been scientifically investigated for anti-diabetic activity. The search returned 25 families with Asteraceae highly reported, followed by Asphodelaceae and Alliaceae. Most of the plants have been studied for their anti-diabetic potentials in vivo and/or in vitro, with most of the plants having a higher percentage of insulin release and inhibition against carbohydrate digesting enzymes as compared with insulin mimetic and peripheral glucose uptake. Almost all the investigated plants also inhibit oxidative stress as part of their hypoglycemic activity with less toxicity. However, the isolation of their bioactive molecules is still lacking. This review provides a resource to enable thorough assessments of the therapeutic profiles of available medicinal plants used for the management of diabetes in the Eastern Cape, South Africa. Further studies such as the identification of the active ingredients of potent plants still need to be carried out; this may lead to new molecules in drug discovery and development.


2021 ◽  
pp. 190-195
Author(s):  
Pushkar Pal ◽  
Adisorn Yawongsa ◽  
Rajesh Bhatta ◽  
Hiroshi Shimoda ◽  
Theera Rukkwamsuk

Background and Aim: Animal rabies is endemic in Nepal, and it occurs in two forms. Although governmental and non-governmental agencies are working toward the control of rabies by mass dog vaccination and stray dog population management, there is still massive number of rabies incidence reported to the reference veterinary laboratory, Nepal. Therefore, this study aimed to assess animal species, temporal, regional, and agro-ecological distribution patterns of animal rabies in Nepal from 2005 to 2017. Materials and Methods: The epidemiological data on animal rabies from the period of 2005 to 2017 were obtained from the Central Veterinary Laboratory, Tripureshwor, Kathmandu, Nepal. The laboratory-confirmed rabies cases were analyzed according to animal species, temporal, regional (developmental zones), and agro-ecological distributions. In addition, descriptive statistics were used to evaluate the distribution patterns of rabies. Results: From 2005 to 2017, a total of 2771 suspected rabies cases in animals were reported to The Central Veterinary Hospital, Kathmandu. Of which, 1302 were found laboratory-confirmed cases. The rabies cases were most commonly reported and confirmed in dogs followed by other domestic animals. The high occurrences were recorded between 2005 and 2007. However, the incidence was increased during 2016 and 2017. The highest number of rabies cases was recorded in the eastern development zone, and the least number in the central zone at regional level. Likewise, it was highest in the Terai (plain) region and lowest in mountainous areas at agro-ecological zones. The findings also revealed that the occurrences of rabies significantly differed among seasons. Conclusion: Rabies is present in Nepal throughout the year and all seasons with seasonal variation. Among the animal species, dogs are the primary animals affected with rabies followed by cattle and other domestic animals. At the regional level, eastern development zone had the highest incidence and Central development zone recorded the least. Similarly, the Terai region had the highest incidence rates, and the least overall prevalence rate was observed in mountainous regions among agro-ecological zones. Therefore, the government should implement the strict enforcement of mass dog vaccination and dog population management through one health approach to control rabies incidence in the country.


2017 ◽  
Vol 8 (1) ◽  
pp. 47-60
Author(s):  
Unathi Sonwabile Henama ◽  
Portia Pearl Siyanda Sifolo

This article explores the tourism migration within the South African context, thereby focusing on the current dynamics, challenges and future prospects. Tourism and migration are significant towards globalisation. Almost all countries have jumped on the tourism bandwagon as a result of the positive economic benefits that include improving the balance of payments, attracting foreign exchange, and increasing state coffers through the taxation of non-residents. South Africa has also adopted tourism into the developmental policies. Although Africa's share of the global tourism market remains less than 10%, the continental bodies such as the African Union under the wing NEPAD recognises that tourism and migration as an important factor to societies. This paper adopts the content analysis to address the tourism migration, dynamics, challenges and future prospects as a critical phenomenon. Tourism has deep characteristics of a plantation economy that does not benefit the majority of the societies, particularly in South Africa. Despite being a geographical dispersed country, the tourism industry in South Africa faces numerous challenges such as the integration of Black South Africans as product owners; reported high rates of crimes, lack of integration of locals in the tourism industry, the lack of aviation competition, paucity of ports of entry, and most recently the cyber-crime and the visa regulations etc. However, South African tourism remains resilient as a major destination due to its fauna and flora and increasing market niches are developing such as adventure tourism, health tourism and volunteer tourism. South Africa plans to be one of the top 20 destinations by 2020; steps are in place to ensure that South Africa achieves this objective.


Author(s):  
Stephen Chan

Southern Africa is a region marked by huge tensions caused by the longevity of colonial rule and racial discrimination. Angola, Mozambique, Zimbabwe, and South Africa all achieved independence only years after most of Africa, and only with protracted militarized struggle. Even those countries that did enter independence in the 1960s, alongside most of Africa, were marked by the struggles of their neighbors—Zambia, host to exile liberation movements, was a frequent military target; and wars, sponsored or supported by apartheid South Africa, continued to rage in Angola and Mozambique even after they achieved independence. This has marked the post-independence politics of most countries of the region, almost all of whom have gone through, or remain within, an era of one-party politics or dominant party rule. In part, this can be read as a residual longing for stability. In other part it can be read as a “liberation generation” using its history as a lever by which to hang onto power. Having said that, the politics of each country has distinctive characteristics—although one has certainly been protracted effort to adhere to forms of ethics, such as “Humanism” in Zambia, and truth and reconciliation in South Africa. The contemporary politics of the region, however, is one with forms of authoritarianism and corruption and, in many cases, economic decline or turmoil. The rise of Chinese influence is also a new marker of politics in the region as all of Southern Africa, with many different former colonial powers, enters a new era of problematic cosmopolitanism—with the international jostling with already sometimes-volatile elements of ethnic diversity, balancing, and conflict.


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