Browsing Doctoral Degrees (Zoology) by Issue Date
Now showing items 21-40 of 90
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The use of Cape gannets Morus capensis in management of the purse-seine fishery of the western Cape.
(1987)A large purse-seine fishery is located in the highly productive southern Benguela System off the western Cape. Purseseine fisheries have been prone to collapse worldwide and management practices have met with limited ... -
The biology and systematic relationships of Crowned, Blackwinged and Lesser Blackwinged Plovers.
(1987)Plovers was compared with particular reference to breeding biology, feeding ecology and habitat preference. Crowned and Blackwinged Plovers coexisted in mixed flocks in grasslands which aided predator detect ion and ... -
A study of the bearded vulture Gypaetus barbatus in southern Africa.
(1988)The Bearded Vulture Gypaetus barbatus has experienced a substantial decrease in range in southern Africa during this century. The present population, numbering about 200 pairs, is confined mainly to ... -
Resource partitioning in a viverrid assemblage.
(1988)Viverrids are small carnivores that achieve high species richness throughout their range. This study investigated the ecology and resource partitioning of five members of this family (Genetta tigrina, Herpestes ichneumon, ... -
Biological studies of bottlenose dolphins from Natal coastal waters.
(1989)The biology of bottlenose dolphins from the east coast of southern Africa is investigated. Births occur predominantly in summer, after a one year gestation period. Calves are born at a length of approximately 103 cm and ... -
Resistance in maize to the maize stalk borer, Busseola fusca (Fuller) (Lepidoptera: Noctuidae)
(1989)An in depth review is given of Host Plant Resistance research on borers in general, and on B. fusca in particular. The general biology and economic importance of B. fusca are also discussed. Several aspects of the ... -
Selected aspects of the adaptive biology and ecology of the Namib Desert golden mole (Eremitalpa granti Namibensis)
(1989)Eremitalpa granti namibensis is a small blind subterranean insectivore (Chrysochloridae) endemic to the Namib Desert sand dunes. This study of the biology and ecology of the Namib mole assesses its adaptive strategies ... -
A herpetological survey of the Transvaal.
(1989)This report discusses the taxonomy, distribution and ecology of the herpetofauna of the Transvaal based on a survey conducted over the past 10 years. Seventeen new forms, apart from four new taxa described during the ... -
Infraspecific systematics of the yellow mongoose Cynictis penicillata.
(1990)Geographic variation was analysed in morphological (colour, morphometric) and genetic (electrophoretic, chromosomal) characters in the yellow mongoose cynictis penicillata, a diurnal, colonial, burrow-dwelling viverrid, ... -
The ecology and conservation of blue duiker and red duiker in Natal.
(1990)The ecology of blue duikers Philantomba monticola and red duikers Cephalophus natalensis was studied in three lowland coastal evergreen forests in Natal. Variation in population densities, estimated with numerous census ... -
The socioecology and conservation of the Samango monkey (Cercopithecus mitis erythrarchus) in Natal.
(1990)The samango monkey (Cercopithecus mitis erythrarchus) is the southern most representative of the polytypic mitis group. The samango is also the only truly arboreal guenon to have radiated as far as 30°S. At southern ... -
The ecology, over-wintering and population dynamics of the pre-imaginal stages of the Anopheles gambiae Giles complex (Diptera : culicidae) in northern Natal, South Africa.
(1991)This study investigated aspects of the breeding biology, ecophysiology, morphology, over-wintering and population dynamics of the pre-imaginal stages of members of the Anopheles gambiae complex in northern Natal, South ... -
Comparative feeding and foraging behaviour of the biocontrol agents Chilocorus spp. (Coccinellidae)
(1991)This study focuses on the effective biocontrol agent Chilocorus nigritus (Fabricius). Its behaviour and ecology were compared with other Chilocorus spp. where appropriate, to elucidate why this species is such an effective ... -
The dynamics of social relationships among female Chacma baboons (Papio cynocephalus ursinus) in Zululand.
(1993)The focus of this study is the effect of environmental conditions on the social relationships among females in a free-ranging troop of chacma baboons (Papio cynocephalus ursinus), in a southern woodland habitat. The ... -
The evolution and socio-ecology of two populations of the Vlei Rat, Otomys irroratus.
(1993)This work investigated two important evolutionary processes - speciation and adaptive variation - in two chromosomally-distinct allopatric Natal Midlands populations of the vlei rat Otomys irroratus. The two populations, ... -
The biology, ecology and conservation of four Flufftail species, Sarothrura (Aves: Rallidae)
(1994)The distribution, status, biology and ecology of four flufftail species were investigated in South Africa and Zimbabwe. The Redchested Flufftail is a successful and widely distributed species, occupying a wide range of ... -
The analysis of erythropoiesis and other early developmental events in the chick embryo using mesodermal-inducing factors.
(1994)The causal and temporal aspects of blood tissue specification in the chick embryo were investigated in this study. The main focus was on the role of basic fibroblast growth factor (bFGF) in the determination of the ... -
Plant molluscicides for snail control in the South African context.
(1994)Despite more than half a century of international research on schistosomiasis control, this disease remains a public health concern in many Third World countries. Four to five percent of the world's population is estimated ... -
The Anostraca (crustacea : Branchiopoda) of southern Africa.
(1994)The Anostraca are a group of crustaceans belonging to the class Branchiopoda. They are predominantly restricted to temporary, inland waterbodies, which in southern Africa, include rockpools, animal wallows, and large ... -
Phylogeny of the Ammobatini and revision of the Afrotropical genera (Hymenoptera : Anthophoridae : Nomadinae)
(1994)The phylogeny of the Ammobatini was studied, with regard to the principles of cladistics using parsimony, and the classification is revised. It is concluded that the tribe forms a monophyletic group that comprises six ...