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1. 

   SOME ASPECTS OF THE ECOLOGY OF THE FRESHWATER CRAB (POTAMONAUTES PERLATUS MILNE EDWARDS) IN THE UPPER REACHES OF THE BUFFALO RIVER, EASTERN CAPE PROVINCE, SOUTH AFRICA.

   Item type: Journal Article • Journal: Southern African Journal of Aquatic Sciences • Authors: M.P. Hill --- Department of Zoology and Entomology, South Africa J.H. O'Keeffe --- , South Africa

   Freshwater crabs (Potamonautes perlatus) are the largest naturally occurring invertebrates in southern African rivers. The ecology of these animals in South African riverine ecosystems is little understood. This study investigates some aspects of the population and feeding ecology of P...

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2. 

   Macro-invertebrate predators of freshwater pulmonate snails in Africa, with particular reference to Appasus grassei (Heteroptera) and Procambarus clarkii (Decapoda)

   Item type: Journal Article • Journal: African Journal of Aquatic Science • Authors: CC Appleton BV Hofkin A Baijnath

   A range of African and alien macro-invertebrates has been reported preying on freshwater pulmonate snails, including those that serve as intermediate hosts for bloodflukes of the genus Schistosoma. Predation by five molluscivorous taxa is reviewed here: indigenous leeches (Glossiphoniidae), marsh...

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3. 

   The introduction, spread and ecology of redclaw crayfish Cherax quadricarinatus in the Zambezi catchment

   Item type: Journal Article • Journal: African Journal of Aquatic Science • Authors: RJ Douthwaite --- Kafue River Trust, Holly Oast, United Kingdom EW Jones --- 3 Cwm Arthur, Myddleton Park, United Kingdom AB Tyser --- Kafue River Trust, Holly Oast, United Kingdom SM Vrdoljak --- Wildtracks Lodge, Zambia

   Two of the four crayfish species brought to Zambia for aquaculture since 1979 are now naturalised. Procamburus clarkii occurs in the Maramba River at Livingstone, close to a former fish farm, whereas Cherax quadricarinatus, deliberately introduced to a number of...

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