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Macrolaimus richteri spec. nov. (Nematoda: Chambersiellidae) from the Richtersveld, South Africa
Antoinette Swart,J. Heyns
Koedoe : African Protected Area Conservation and Science , 1992, DOI: 10.4102/koedoe.v35i1.386
Abstract: Specimens of Macrolaimus richteri spec. nov. were examined with the aid of a scanning electron microscope (SEM) and some hitherto undescribed features of Macrolaimus were discovered. The sense organs are arranged in an inner circlet of six huge outer labial setae, a second circlet of four small cephalic setae and two pore-like amphid apertures in the first annule posterior to the head. The stomatal opening is surrounded by six flap-like lips covering the peculiar triangular cheilorhabdions which seem to be protmsible. The prominent anterior lip of the vulval opening is ornamented with about ten horizontal grooves. Distinctive characters ofM. richteri spec. nov. are the strongly annulated cuticle, slightly dorsad curved tail terminus and the length of the cheilorhabdions (1,6-1,8 times prorhabdion length).
Longidorus jagerae sp.n., another longidorid species with globular inclusions in the prerectum (Nematoda: Longidoridae)
J. Heyns,Antoinette Swart
Koedoe : African Protected Area Conservation and Science , 1998, DOI: 10.4102/koedoe.v41i1.243
Abstract: Longidorus jagerae sp.n. is described from the Western Cape Province, South Africa. It is characterised by the possession of globular inclusions in the prerectum, expanded lip region, posteriorly situated guiding ring, and distinct flanges at the odontophore base. It is compared with the South African species L. fursti and L. mobae, from which it differs among other things in the presence of prerectal inclusions, and with L. pisi and L. latocephalus, from which it can be differentiated mainly by the much longer odon- tostyle, more posteriorly situated guiding ring, and shorter tail.
Plant nematodes in South Africa. 11. Checklist of plant nematodes of the protected areas of KwaZulu-Natal
Mariette Marais,Antoinette Swart
Koedoe : African Protected Area Conservation and Science , 2013,
Abstract: Nematodes are some of the most abundant soil organisms and are an essential part of soil ecology. These organisms are used as indicator organisms and can be linked to soil health. Biological collections contain vast amounts of data, with the National Collection of Nematodes housed at the Plant Protection Research Institute, Agricultural Research Council being no different. During the digitising of the collection a number of unpublished records of plant nematodes reported from protected areas in KwaZulu-Natal were found in the South African Plant-Parasitic Nematode Survey database. A total of 222 plant nematode species belonging to 39 genera were reported from the province, with only 94 of these species reported from the protected areas and 172 and 159 species reported from uncultivated (outside the protected areas) and cultivated areas, respectively. Only nine species, Criconema silvum, Criconema talanum, Helicotylenchus marethae, Ogma dracomontanum, Ogma louisi, Ogma ueckermanni, Paralongidorus deborae, Trichodorus rinae and Xiphinemella marindae were described from protected areas, whilst O. dracomontanum, P. deborae and T. rinae were subsequently also reported from other provinces.Conservation implications: A higher degree of diversity of nematodes was observed in the unprotected areas of the province. The observation suggests that nematode fauna, and by implication also other invertebrates, are not adequately protected.
Studies on Haliplectus Cobb, 1913. A diagnostic species compendium of the genus Haliplectus and notes on intraspecific variation in H. biekneri Chitwood, 1956
Antoinette Swart,J. Heyns
African Zoology , 2012,
Abstract: ENGLISH ABSTRACT: This last part of a series on Haliplectus Cobb, 1913 includes a species compendium of the genus and a brief comparative study of different populations of H. bickneri Chitwood, 1956. *********** AFRIKAANSE OPSOMMING: Hierdie laaste gedeelte van 'n reeks artikels oor Haliplectus Cobb, 1913 bevat 'n diagnostiese spesiekompendium van die genus en 'n kort vergelykende studie van verskiliende bevolkings van H. bickneri Chitwood, 1956.
Description of Caprionchulus diversipapillatus n.gen., n.sp. from Caprivi, Namibia (Nematoda: Onchulinae)
Antoinette Swart,J. Heyns
African Zoology , 2012,
Abstract: ENGLISH ABSTRACT: Caprionchulus diversipapillatus n.gen, n.sp. was found in a small fresh-water pond in eastern Caprivi. The new genus differs from all other genera within the subfamily Onchufinae Andrassy, 1963 in the almost barrelshaped stoma containing a single dorsal tooth, an elongated cardia comprising three vertical rows of four cells each and peculiar supplements consisting of two conspicuous adanal setae and a row of six to eight papilloid supplements, the last four of which are in pairs. The spicule shape is also different from other members of the Onchulinae. *********** AFRIKAANSE OPSOMMING: Caprionchulus diversipapillatus n.gen., n.sp. is in 'n varswaterpoel in Oos-Caprivi, Namibia gevind. Die nuwe genus verskil van alle ander genera binne die subfamilie Onchulinae Andrassy, 1963 in die amper vaatjievormige stoma met slegs een dorsale tand, die verlengde kardia wat bestaan uit drie rye van vier selle elk, die vorm van die spikulum en die eienaardige supplementêre organe. Hierdie organe bestaan uit twee opvallende adanale setae en 'n ry met ses tot agt papil-vormige supplementêre organe waarvan die laaste vier parig is.
Identifikasie van die sist-aalwurms van Suid-Afrika met behulp van die skandeer-elektronmikroskoop (SEM)
Antoinette Swart,L.R. Tiedt
Suid-Afrikaanse Tydskrif vir Natuurwetenskap en Tegnologie , 2012, DOI: 10.4102/satnt.v31i1.309
Abstract:
Die karst-ekologie van die Bakwenagrot (Gauteng)
Fran?ois Durand,Antoinette Swart,Werner Marais,Candice Jansen van Rensburg
Suid-Afrikaanse Tydskrif vir Natuurwetenskap en Tegnologie , 2012, DOI: 10.4102/satnt.v31i1.275
Abstract: Die Bakwenagrot huisves ’n verskeidenheid organismes wat ’n ingewikkelde en verweefde voedselweb vorm. ’n Kolonie Natalse langvingervlermuise gebruik hierdie grot regdeur die jaar as blyplek. Die vlermuisguano en dooie plantmateriaal wat van buite in die grot inval, vorm die basis van die ekologie in die grot wat ook as ’n tipiese detritus-gedrewe ekostelsel beskryf kan word. Afbrekers soos bakterie en swamme wat vir die afbraak van die guano en plantreste verantwoordelik is, word deur ’n verskeidenheid organismes, insluitend nematode en myte, as voedselbron benut. Hierdie organismes wat die volgende trofiese vlak vorm, word deur predatoriese artropode as voedselbron benut. Die Bakwenagrot is een van die weinige dolomietiese grotte in Suid-Afrika wat dit vir ‘n mens moontlik maak om tot by die grondwatervlak te kom. Die grondwater huisves verskeie tipes organismes waaronder bakterie , swamme en diere – hoofsaaklik nematode en krustase . Die Bakwenagrot is ook die hoofvindplek waar varswater-amfipode in Suider-Afrika gevind is. Hierdie besondere en sensitiewe ekostelsel is hoofsaaklik van guano van die vlermuiskolonie afhanklik. Die grasveld in die gebied rondom die grot, wat as voedingsarea vir die vlermuiskolonie dien, word tans deur voorstedelike ontwikkeling en die gevolglike habitatfragmentasie en -vernietiging bedreig. Indien die vlermuise die grot sou verlaat, sal dit ’n hele domino-effek van uitsterwing van die grotbewonende organismes tot gevolg hê. The karst ecology of the Bakwena Cave (Gauteng). The Bakwena Cave houses a variety of organisms that form an intricate and interdependent food web. This cave is utilised as a permanent roost by a colony of Natal clinging bats. The bat guano and allochthonous plant material that fall into the cave from outside, form the basis of the ecology inside the cave which may be considered a typical example of a detritus ecosystem. Decomposers such as bacteria and fungi are responsible for the decay of the guano and plant detritus which, in turn, are utilised by several organisms, including nematodes and mites, as food source. These animals form the next trophic level which is utilised by predatory arthropods as food source. The Bakwena Cave is one of the few dolomitic caves in South Africa that provide access to the water table. The groundwater houses several types of organisms, including bacteria, fungi and animals – primarily nematodes and crustaceans. The Bakwena Cave is also the type locality for freshwater amphipods in Southern Africa. This unique and sensitive ecosystem is primarily dependent on bat gua
Black Community College Students and Opinions and Beliefs on Weight in the Community: A Focus Group Study  [PDF]
Janna Stephens, Antoinette Perkins
Health (Health) , 2019, DOI: 10.4236/health.2019.111007
Abstract: Objective: The purpose of this study was to better understand black community college students’ beliefs on obesity in their community. Methods: Participants were 18 - 21 years old and African American/Hispanic Black. Focus group sessions were conducted with a discussion guide. Thematic analysis was used to analyze results. Results: Five focus groups were conducted. Four major themes emerged: My Culture Matters, The Effects of Slavery are Still Present, Meet Me Where I Want to Be, Not Where Society Wants Me, and If They Have Been Fat, They Get Me. It is clear that weight programs need to be sensitive to cultural preferences. Conclusion: Our results present unique factors related to overweight/obesity in the Black community.
Drug interactions with tuberculosis therapy
A Swart
Continuing Medical Education , 2005,
Abstract:
'n Man wat beur. Huldigingsbundel vir Dirk van Schalkwyk.
C Swart
Lexikos , 2004,
Abstract: Willem Botha (Redakteur). 'n Man wat beur. Huldigingsbundel vir Dirk van Schalkwyk. 2003, xii + 384 pp. ISBN 0-9584401-4-X. Stellenbosch: Buro van die WAT. Prys: R150.
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