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Biomarker responses in the freshwater shrimp Caridina nilotica as indicators of persistent pollutant exposure

Jansen van Rensburg, Gregg; Smit, Nico J.; Wepener, Victor; Bervoets, Lieven; Van Vuren, Johan (Springer, 2020)

Biomarkers are applied as early warning indicators of organisms’ exposure to pollutants. The aim of this study was to utilise a multi-biomarker approach in the freshwater shrimp Caridina nilotica (Decapoda: Atyidae) as ...

Resolution of the identity of three species of Diplostomum (Digenea: Diplostomidae) parasitising freshwater fishes in South Africa, combining molecular and morphological evidence

Hoogendoorn, Coret; Smit, Nico J.; Kudlai, Olena (Elsevier, 2020)

Reliable data on the diversity of the genus Diplostomum (Digenea: Diplostomidae) parasitising freshwater fishes in South Africa, as well as in Africa, is almost non-existent. Most of the morphology-based identifications ...

The role of fish helminth parasites in monitoring metal pollution in aquatic ecosystems: a case study in the world's most productive platinum mining region

Erasmus, Johannes H.; Wepener, Victor; Zimmermann, Sonja; Malherbe, Wynand; Smit, Nico J. (Springer, 2020)

Due to the increasing consumption of platinum (Pt), especially in automobile exhaust catalysts, environmental concentrations of Pt are of emerging concern worldwide. Limited information exists on environmental concentrations, ...

Morphological and molecular characterization of an African freshwater fish trypanosome, including its development in a leech vector

Smit, Nico J.; Joubert, Adri; Cook, Courtney A.; Lawton, Scott P.; Hayes, Polly M. (Elsevier, 2020)

Trypanosomes are ubiquitous blood parasites of fishes and at least 16 species were originally described infecting African freshwater fishes. This number was later reduced to six and in the late 1990s it was proposed that ...

Novel insights into the genetics, morphology, distribution and hosts of the global fish parasitic digenean Proctoeces maculatus (Looss, 1901) (Digenea: Fellodistomidae)

Vermaak, Anja; Kudlai, Olena; Yong, Russell Q-Y.; Smit, Nico J. (Cambridge University Press, 2023)

Larval stages of the widely distributed digenean species Proctoeces maculatus (Looss, 1901) were reported 40 years ago from South Africa in the common octopus, Octopus vulgaris Cuvier (Octopodidae). However, the absence ...

The application of artificial mussels in conjunction with transplanted bivalves to assess elemental exposure in a platinum mining area

Labuschagne, Marelize; Wepener, Victor; Zimmermann, Sonja; Smit, Nico J.; Nachev, Milen (MDPI, 2020)

There is increasing evidence that platinum group elements (PGE) are pollutants of emerging concern worldwide. Limited information exists on levels, particularly in regions where PGEs are mined. A passive sampling device ...

Neofoleyellides boerewors n. gen. n. sp. (Nematoda: Onchocercidae) parasitising common toads and mosquito vectors: morphology, life history, experimental transmission and host-vector interaction in situ

Netherlands, Edward C.; Svitin, Roman; Cook, Courtney A.; Smit, Nico J.; Brendonck, Luc; Du Preez, Louis H. (Elsevier, 2020)

Anuran filarial nematodes are restricted to two comparatively small subfamilies (Icosiellinae and Waltonellinae) of the filariae that currently comprise six genera and 41 recognised species. However, the life histories of ...

An overview of the Dactylosomatidae (Apicomplexa: Adeleorina: Dactylosomatidae), with the description of Dactylosoma kermiti n. sp. parasitising Ptychadena anchietae and Sclerophrys gutturalis from South Africa

Netherlands, Edward C.; Cook, Courtney A.; Du Preez, Louis H.; Brendonck, Luc; Smit, Nico J. (Elsevier, 2020)

Haemogregarine (Apicomplexa: Adeleorina) blood parasites are commonly reported from anuran hosts. Dactylosomatidae (Jakowska and Nigrelli, 1955) is a group of haemogregarines comprising Dactylosoma Labbé, 1894 and Babesiosoma ...

Trophic transfer of pollutants within two intertidal rocky shore ecosystems in different biogeographic regions of South Africa

Erasmus, Anja; Ikenaka, Yoshinori; Smit, Nico J.; Wepener, Victor; Nakayama, Shouta M.M. (Elsevier, 2020)

Tsitsikamma and Sheffield Beach are two relatively pristine sites along the South African east coast representing warm temperate and subtropical biogeographic rocky shore intertidal ecosystems, respectively. Stable isotopes ...

Using Confocal Microscopy And Pigment Analyses To Detect Adverse Insecticide Effects In Non-Target Freshwater Diatom Species - A Proof-Of-Concept Using Nitzschia Palea

Kock, Anrich; Pheiffer, Wihan; Wepener, Victor; Smit, Nico J.; Taylor, Jonathan C. (Springer, 2023)

The persistence of insecticides in aquatic environments is a cause of concern and to date hardly any studies have focused on the effects that DDT and deltamethrin have on non-target freshwater diatom communities. The ...