Search Results

Susan M. Dippenaar

OCEARCH is a recognized world leader in generating important scientific data about shark species in an attempt to address the globally limited understanding of such species. These species include, amongst others, the IUCN vulnerable white sharks. During the expeditions, sharks are caught, restrained, and supplied with water to assure the flow of oxygen while data are collected within 15 min, whereafter the shark is released unharmed. Within the period from March through May 2012, such an expedition took place along the south and west coasts of South Africa. As part of this expedition copepods were collected from the external surfaces of the captured sharks. They were fixed and preserved in 70% ethanol and examined using microscopes. The copepods recovered represented seven species with the majority of individuals assigned to the Pandaridae and Dichelesthiidae, while only two specimens representing Caligidae.

Peral Mnisi and Susan M. Dippenaar

Abstract

Ephemeral pools are biologically important habitats for species adapted to survive through a dry phase. Unfortunately, these pools have been neglected in studies. Copepods are essential in aquatic habitats mainly because of their importance in the food web. Currently there are only 34 species reported from freshwater habitats in South Africa. This study was conducted in an ephemeral pool (Limpopo Province, South Africa). Qualitative sampling was done monthly (December 2014 to June 2015) using a plankton net and specimens were studied through a light microscope. Seven species were collected, three from Calanoida and four from Cyclopoida, including a new species, Microcyclops raynerae. Seven species represent quite a high biodiversity of copepods from a single pool when compared with similar studies previously done in South Africa. The report of Tropocyclops confinis constitutes a new geographical record from South Africa while all other collected species are new records from the Limpopo Province.