Browsing Doctoral Degrees (Zoology) by Title
Now showing items 1-20 of 92
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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 ... -
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 ... -
Aspects of the biology and ecology of the estuarine fishes of the east coast of South Africa.
(1974)No abstract available. -
Aspects of the biology and population dynamics of freshwater mussels in Lake Kariba and Lake McIlwaine.
(1980)Following preliminary observations in 1975 the Lake Kariba Fisheries Research Institute implemented a research program in March 1976 to investigate various aspects of the biology and population dynamics of the mussel ... -
Aspects of the biology of the red bishop Euplectes orix and other Euplectes species.
(1977)The breeding biology and the annual cycle of the Red Bishop Euplectes orix was studied over a two year period in Natal. Some comparative data were also gathered for the related species the Red-shouldered Widow E. ... -
Aspects of the biology, specific status and control of the bedbugs Cimex lectularius and Cimex hemipterus in northern Natal and KwaZulu.
(1989)The bedbugs Cimex lectularius and C. hemipterus (Hemiptera: Cimicidae) have been identified from a study area in northern Natal and KwaZulu. South Africa, between 26° 45' S and 28° 45' S, and 32° 00 ' E and 32° 52' E. ... -
Aspects of the ecology and exploitation of the fishes of the Kosi Bay system, KwaZulu, South Africa.
(1986)ln this study the exploitation of the fish fauna of the Kosi estuarine system by man and natural predators is described and estimates made of the off-take and its species composition. The most important ... -
Aspects of the ecology of invasive rose-ringed parakeets (Psittacula krameri) in eThekwini Metropolitan, KwaZulu-Natal Province, South Africa.
(2021)Globally, the rose-ringed parakeet Psittacula krameri (Scopoli, 1769) has been cited as one of the world’s worst gregarious invasive parrot species, having established breeding colonies successfully outside its native ... -
Aspects of the thermal physiology and fruit digestion of Knysna (Tauraco Corythaix) and Purple-crested (Gallirex porphyrelophus)
(2010)Chapter 2: Avian frugivores have been somewhat poorly studied with regards to the effects that different fruit sugar types and concentrations have on their digestive efficiencies. Digestion of sugars in equicaloric and ... -
Assessing the risk of non-native small mammals in the South African pet trade.
(2021)Humans have introduced non-native small mammalian species for various purposes, including hunting, biological control, farming, fur markets, ornamental, and pet trade. The latter has been cited as one of the main invasion ... -
An autecological study of bushbuck and common duiker in relation to forest management.
(1986)Frequent reports of damage caused by bushbuck and common duiker browsing on commercially important timber seedlings, and an interest in the potential and feasibility of hunting these ... -
Behaviour and social organization of the African Jacana Actophilornis africanus.
(1997)The behaviour, nesting, food resources and mating system of the African Jacana Actophilornis africanus were studied at Muzi Swamp, northern KwaZulu-Natal and at Darvill Sewerage Works, KwaZulu-Natal. African Jacanas ... -
The behavioural thermoregulation and ecophysiology of the leopard tortoise (Geochelone pardalis) in the Nama-Karoo.
(2007)The leopard tortoise (Geochelone pardalis) is the largest of the southern African tortoise species and has a wide distribution range. However, there is a lack of ecological and physiological information about the species, ... -
Beyond DNA sequencing : integrative approaches to resolving selected higher and lower taxonomic problems in Afrotropical Chiroptera.
(2013)Of the approximate 300 currently recognised bat species known from the Afrotropics, very few have been studied in sufficient detail to a) provide accurate species and distributional limits for extant taxa, b) identify ... -
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 ... -
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 ... -
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 ... -
Black rhinoceros (Diceros bicornis) habitat selection and movement analysis.
(2010)Many aspects of habitat selection have been largely ignored in conservation planning of large mammals, including variation between day and night movement patterns, inter-individual niche variation of conspecifics and ... -
Chromosomal evolution in the Vlei Rat Otomys irroratus.
(1996)Proponents of the recognition concept of species hold that isolating mechanisms, including chromosome rearrangements, play no role in speciation while the more commonly accepted biological species concept proposes that ... -
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 ...