- Home
- A-Z Publications
- Madoqua
- OA African Journal Archive
- Volume 16, Issue 1, 1989
Madoqua - Volume 16, Issue 1, January 1989
Volumes & issues
-
Volume 20 (1997)
-
Volume 19 ([1997, 1995])
-
Volume 19 ([1997, 1995])
-
Volume 18 ([1993, 1991])
-
Volume 18 ([1993, 1991])
-
Volume 17 ([1991, 1990])
-
Volume 17 ([1991, 1990])
-
Volume 16 (1989)
-
Volume 15 ([1987, 1988])
-
Volume 15 ([1987, 1988])
-
Volume 14 ([1984, 1985, 1986])
-
Volume 14 ([1984, 1985, 1986])
-
Volume 14 ([1984, 1985, 1986])
-
Volume 13 ([1984, 1982, 1983])
-
Volume 13 ([1984, 1982, 1983])
-
Volume 13 ([1984, 1982, 1983])
-
Volume 12 ([1981, 1980])
-
Volume 12 ([1981, 1980])
-
Volume 11 ([1979, 1980, 1978])
-
Volume 11 ([1979, 1980, 1978])
-
Volume 11 ([1979, 1980, 1978])
-
Volume 10 (1977)
-
Volume 9 ([1976, 1975])
-
Volume 9 ([1976, 1975])
-
Volume 2 ([1973, 1975, 1970, 1974])
-
Volume 2 ([1973, 1975, 1970, 1974])
-
Volume 1 ([1972, 1973, 1969, 1974, 1971])
-
Volume 2 ([1973, 1975, 1970, 1974])
-
Volume 1 ([1972, 1973, 1969, 1974, 1971])
-
Volume 1 ([1972, 1973, 1969, 1974, 1971])
-
Volume 1 ([1972, 1973, 1969, 1974, 1971])
-
Volume 2 ([1973, 1975, 1970, 1974])
-
Volume 1 ([1972, 1973, 1969, 1974, 1971])
Volume 16, Issue 1, January 1989
-
New frog records from the Eastern Caprivi Strip, South West Africa/Namibia
Author Allen ChanningSource: Madoqua 16, pp 1 –4 (1989)More LessA survey or the Eastern Caprivi Strip, SWA/Namibia, during January to March 1986 resulted in the collection of 26 species of anurans, of which four are new records for the country. Ptychadena cotti, Ptychadena taenioscelis, Ptychadena upembae and Phrynobatrochus stewartae are known from north and east of the area, and demonstrate a link with the tropical frog fauna in Malawi. An annotated list of species collected from the Eastern Caprivi Strip is presented.
-
On the inheritance of the red colour in the Mozambique Tilapia Oreochromis mossambicus
Author J.T. FerreiraSource: Madoqua 16, pp 5 –8 (1989)More LessSeveral options for the inheritance of the red colour in the Mozambique tilapia, Oreochromis mommbicus are discussed. Breeding with only red mutants resulted in 100% red progeny, while crossing typically coloured individuals and red mutants provided silvery coloured offspring. Interbreeding this offspring resulted in a mixture of red, red typical and typical coloured individuals. It is obvious that the red colour is not due to albinism nor is it the result of a single recessive gene.
-
Summer activity patterns of the riparian desert beetle Physadesmia globosa
Author J.W.H. FergusonSource: Madoqua 16, pp 9 –13 (1989)More LessThc summertime activity pattern of the tenebrionid beetle Physadesmia globosa was investigated using focal animal sampling. Beetles have a bimodal activity pattern with activity peaks during the morning and the late afternoon. The morning activity peak is divided into an early bout of foraging followed by sexual behaviour.
-
Veld dynamics and utilisation of vegetation by herbivores on the Ganias Flats, Skeleton Coast Park, SWA/Namibia
Author J.G. Tarr, P.W. & TarrSource: Madoqua 16, pp 15 –22 (1989)More LessVeld surveys and game counts were conducted quarterly during 1982 and seasonally during 1983/84 on a typical pro-Namib plain on the eastern boundary of the Skeleton Coast Park. A strong correlation between veld condition and rainfall was evident. The aim of this study was to establish the relationship between fluctuations in veld conditions and the seasonal movements of large herbivores on a typical Namib plain along the eastern boundary of the Skeleton Coast Park.
-
Branching patterns in Aloe dichotoma - is A. ramosissima a separate species?
Source: Madoqua 16, pp 23 –26 (1989)More LessThe proposal that Aloe ramossisima be reduced to varietal rank under A. dichotoma, based on a low incidence of ramossisima-type branching pattern (less than 100 mm above ground level) in most A. dichotoma populations, is invalid, as the ramossisima-type branching pattern has a different cause in the two taxa. Branching patterns in A. dichotoma populations show a majority of first branchings at between 1.5 m and 2.4 m above ground.
-
The identification of hybrids of Barbus aeneus X B. kimberleyensis and Labeo capensis X L. umbratus in Hardap Dam, SWA/Namibia
Source: Madoqua 16, pp 27 –34 (1989)More LessA morphometric and biochemicaI genetic comparison of Barbus aeneus and B. kimberleyensis with B. cf. kimberleyensis from Hardap Dam, SWA/Namibia, revealed that the latter population showed distinct evidence of hybridization between B. aeneus and B. kimberleyensis. A similar comparison of the three Labeo-populations from Hardap Dam alsa indicated hybridization between L. capensis and L. umbratus.
-
An electrophoretic and morphometric evaluation of the two subspecies of Tilapia rendalli from southern Africa
Source: Madoqua 16, pp 35 –39 (1989)More LessProblems regarding the subspecific status of Tilopia rendalli (Boulenger 1896) and the lack of knowledge regarding the genetic status of these populations made it necessary to examine T. rendalli morphometrically and electrophoretically. Blood serum and muscle samples were respectively analysed on polyacrylamide and starch gels.
-
Biology of Xerus princeps (Rodentia, Sciuridae)
Source: Madoqua 16, pp 41 –46 (1989)More LessThe range of X. princeps is confined to a narrow band along the whole inland escarpment of SWA/Namibia, extending northwards into southern Angola. X. princeps are diurnal and reduce their exposure to high ambient temperatures through special behaviour (e.g. using the tall as a parasol). They live singly or in family groups of up to three (four?) animals.
-
Range extensions, food and breeding of the Marsh Owl in the northwestern Namib, South West Africa/Namibia
Author S. BraineSource: Madoqua 16, pp 47 –49 (1989)More LessMarsh owls Asio capensis were found at 13 localities along the northwestern Namib, SWA/Narnibia. Three nests were found. These records indicate a more extensive distribution along the Namib coast than was previously rhought. Observations were made on the owl's hunting methods, food, breeding biology and behaviour near thc nest.
-
The status of alien invasive plants in the major rivers of the Namib Naukluft Park
Author H.J. Boyer, D.C. & BoyerSource: Madoqua 16, pp 51 –58 (1989)More LessThe major rivers of the Namib Naukluft Park were surveyd to determine the degree of infestation of alien invasive plants. The Swakop and Kuiseb Rivers had the densest infestations, the Tsondab and Tsauchab Rivers had less dense infestations, while no alien plants were found in the Awasib and Koichab Rivers. Datura innoxia and Nicotiana glauco were the most abundant alien plant species.
-
Birds and electricity transmission lines in South West Africa /Namibia
Author J.L. Brown, C.J. & LawsonSource: Madoqua 16, pp 59 –67 (1989)More Less1447 km of 330 kV and 220 kV electricity transmission lines in South West Africa/Namibia were surveyed from a helicopter. Only one collision victim, a secretarybird Sagittarius serpenturius, was found, and there was no evidence of bird electrocution.
-
Some breeding sites of Horus and Bradfield's Swifts in South West Afrioca/Namibia
Author C.J. BrownSource: Madoqua 16, pp 69 –70 (1989)More Less
-
Marking and subsequent movement patterns of Springbok lambs in the Etosha National Park, South West Africa/Namibia
Author P.E. Panagis, K. & StanderSource: Madoqua 16, pp 71 –73 (1989)More Less