Now showing items 116-135 of 318
Die rol van dieldrin in waterbesoedeling met spesiale verwysing na die invloed daarvan op varswaterfauna
﻿ Van Jaarsveld, Jan Harm
Die rol van versteuring deur minerale en organiese stowwe op faunistiese toestande van riviere in die Witwatersrandse gebied van die Vaalriviersisteem
﻿ Viljoen, Frederick Christian
Die testisultrastruktuur van Cyprinidae in Suid-Afrika en Israel met spesiale verwysing na die kriobewaring van Barbus aeneus-sperme
﻿ Vlok, Wynand
The spermatogenesis of two freshwater species from South Africa, Barbus
marequensis and B. polylepis, and three fresh water species from Israel, B. canis,
B. longiceps and Capoeta damascina, was studied.
A histological ...
Die ultrastruktuur en innervering van die smaaksinsorgane by Clarias gariepinus (Burchell) (Teleostei : Siluroidei)
﻿ Nel, Maria Magdalena
Die verband tussen die ouderdom en lengte/massaverhouding van Tilapia mossambica Peters 1852 in Loskopdam, Oos-Transvaal
﻿ Du Toit, Pieter
Die verspreiding en status van varswatervis in Namibië
﻿ Hay, Clinton John
Die verspreiding en voedingsgewoontes van Anguilla-spesies in geselekteerde riviere in Transkei
﻿ Deacon, Andrew Richard
Die visbevolkingsdinamika in vier staatsopgaardamme in Namibië met verwysing na watervoëlpredasie, kommersiële ontginning en hengeltoestande
﻿ Schrader, Hendrik Johannes
Die voedingsekologie en voedingsfisiologie van die kurpers, Tilapia rendalli (Boulenger) en Oreochromis mossambicus (Peters) in 'n warm, rioolverrykte habitat
Die voorkoms en aard van besoedeling en die effek daarvan op die biologie en waterchemie van die Elsburgspruitsisteem
﻿ Van der Merwe, Christiaan Gideon
An investigation was made into the water chemistry, bacteriology and
macroinvertebrate fauna of the Elsburg Spruit and its major tributaries
within the municipal boundaries of the City of Germiston. From the
Die voorkoms en akkumulering van geselekteerde swaarmetale in die rioolbesoedelde, organiesverrykte Elsburgspruit-Natalspruit vlei-ekosisteem
﻿ Van Eeden, Pieter Hermanus
Die voorkoms van Rickettsia-agtige mikroorganismes in die volwasse bontbosluis Amblyomma hebraeum
﻿ Stuyven, Josee M.B.
Die voortplantingsbiologie, teelt en hormoongeinduseerde geslagsverandering van vier Tilapiasoorte
﻿ Holtzhausen, Johannes Andries
Dorylaimida uit die Nasionale Krugerwildtuin
﻿ Britz, Annelize Susan
This study embraces three facets, namely a checklist of all the freeliving
and plantparasitic nematodes, reported from the Kruger National
Park, descriptions of the nematode species found during the present
study, and ...
Ecological integrity assessment of the Mvoti Estuary, KwaZulu-Natal, South Africa
﻿ Swemmer, Riaan
Estuaries are regarded as South Africa's most productive ecosystems due to the important functions that they perform, such as providing nursery areas and feeding sites for juvenile macro-invertebrate and fish species. ...
The ecological integrity of the Klip River and the development of a sensitivity weighted fish index of biotic integrity (SIBI)
﻿ Kotze, P. J.
The primary objective of the study was to determine the ecological integrity of the Klip River. The protocols applied during the study gave a reliable and good reflection of the overall ecological integrity, as well as the ...