scholarly journals A Dipterous Parasite of Glossina morsitans

1914 ◽  
Vol 5 (1) ◽  
pp. 91-93
Author(s):  
Ernest E. Austen
Keyword(s):  
South Africa ◽  
Glossina Morsitans ◽  
Broken Hill

The Imperial Bureau of Entomology has recently received from Mr. Ll. Lloyd, Entomologist to the British South Africa Company in Northern Rhodesia, a small Bombyliid fly accompanied by the following letter, dated “Mwengwa, Mumbwa, viâ Broken Hill, N. Rhodesia, November 1, 1913.—I am sending you herewith a specimen of a Dipteron, which I believe to be a parasite of G. morsitans. During July and August of this year I collected about 700 pupae of this Tsetse in nature at Ngoa, in the Mpika Division of Northern Rhodesia. These were kept under observation until September 15th, when I was compelled to travel through fly-free country for a month; they were accordingly closed up in a fly-proof case to avoid escape (in case of possible fracture of one or more of the bottles containing the pupae), and were not examined again until October 18th. On this date one of the bottles, which had contained five Tsetse pupae collected on July 21st, was found to contain:—

scholarly journals Report on the investigation into the bionomics of Glossina morsitans in Northern Rhodesia, 1915

1916 ◽  
Vol 7 (1) ◽  
pp. 67-79 ◽  
Author(s):  
Ll. Lloyd
Keyword(s):  
South Africa ◽  
Dry Season ◽  
Considerable Importance ◽  
Glossina Morsitans ◽  
Insect Parasite ◽  
Railway Line ◽  
Broken Hill ◽  
Base Camp ◽  
The Future ◽  
A Site

The following report deals with the investigation into the bionomics of Glossina morsitans being carried out in Northern Rhodesia on behalf of the British South Africa Company.On my return from leave in July 1914 it was decided to form a base camp close to the railway line. Several areas in the neighbourhood of Broken Hill where fly was reported as being very thick were first examined, but were found from various causes to be unsuitable. A site was finally selected at the source of the Lukanga River, about four miles from the line and near Kashitu station, midway between Broken Hill and Ndola. Building was commenced in August and completed in October, just before the commencement of the rains.Messrs. Eminson and Dollman, who had been working on the Kafue River at Mwengwa, had just reported the discovery of Mutilla glossinae, Turner, a wasp parasitic on the pupae of G. morsitans and of considerable importance, since the former worker found that about 10 per cent, of the 350 pupae he had collected were destroyed by this insect. This is the first insect parasite of any tsetse to be found in numbers, and it was decided to let the future investigations centralise round it. In order to discover whether it was localised or generally distributed, a tour was made through the fly areas of N.E. Rhodesia during the dry season of last year (1915) for the collection of pupae in various localities. About 4,000 were collected and examined. May and July were spent at Chutika (Hargreaves) in the Luangwa Valley, part of August at Nawalia in the Mpika section of the same valley, and September at Ngoa on the plateau near Mpika. Breeding was found to have commenced in the Luangwa Valley about the middle of April, and by the time the plateau was reached it was at its height. Before dealing with the parasites found, some general questions will be discussed.

Geochemistry of bedded barite of the Mesoproterozoic Aggeneys-Gamsberg Broken Hill-type district, South Africa

2007 ◽  
Vol 42 (5) ◽  
pp. 537-549 ◽  
Author(s):  
Craig R. McClung ◽  
Jens Gutzmer ◽  
Nicolas J. Beukes ◽  
Klaus Mezger ◽  
Harald Strauss ◽  
...  
Keyword(s):  
South Africa ◽  
Broken Hill

scholarly journals Notes on the preliminary stages of Glossina Morsitans, Westw

1911 ◽  
Vol 2 (4) ◽  
pp. 291-295 ◽  
Author(s):  
Allan Kinghorn
Keyword(s):  
South Africa ◽  
Life History ◽  
Large Mass ◽  
Wide Distribution ◽  
Economic Importance ◽  
Tsetse Fly ◽  
Single Specimen ◽  
Glossina Morsitans ◽  
First Time

Seeing that Glossina morsitans, the typical “tsetse” fly of writers on South Africa, has been well known for perhaps a longer period than any other member of the genus, it is a matter for great surprise that much of its life history is yet entirely unknown. A large mass of literature, dealing with its general habits, is extant, but the breeding habits and the larva have not been described. It is noteworthy that only last year a single specimen of the puparium was discovered for the first time, and when the wide distribution, the great plentitude, and the economic importance of the fly are considered, this becomes all the more remarkable.

Sulphur isotopes in metamorphosed Precambrian Fe-Pb-Zn-Cu sulphides and baryte at Aggeneys and Gamsberg, South Africa

1983 ◽  
Vol 47 (345) ◽  
pp. 481-486 ◽  
Author(s):  
K. von Gehlen ◽  
H. Nielsen ◽  
I. Chunnett ◽  
A. Rozendaal
Keyword(s):  
South Africa ◽  
Amphibolite Facies ◽  
Sulphur Isotopes ◽  
Sedimentary Sequence ◽  
The West ◽  
Sulphur Isotope ◽  
Positive Side ◽  
Broken Hill ◽  
Ore Minerals ◽  
Black Mountain

AbstractSulphur isotope ratios in sulphides and baryte from stratabound and stratiform orebodies in a metavolcanic-sedimentary sequence in Namaqualand were found, in part, to be extreme for Precambrian sulphur. Black Mountain, Aggeneys, in the west gave an average for the sulphides of δ34S = +8.9±3.7‰ (9 samples), an average for barytes of +20.6±4.3‰ (3 samples). Broken Hill, Aggeneys, in the centre gave an average for the sulphides of δ34S = +19.8±3.1‰ (19 samples). Gamsberg, in the east, gave an average for the sulphides of δ34S = +29.2±1.8‰ (24 samples), and an average for barytes of +35.4±0.2‰ (2 samples). The δ34S values increase eastward. Their range is strongly on the positive side and does not centre around zero. The Gamsberg barytes and most Gamsberg sulphides have more positive δ34S values than those reported for other Precambrian sulphides and sulphates. We interpret the above sulphur isotope range as being mainly due to the varying contributions of submarine-exhalative sulphide sulphur with δ34S close to zero and bacterially(?) reduced sulphate with strongly positive δ34S, apparently from evaporites in the east. Metamorphism of amphibolite facies grade has partly isotopically re-equilibrated the ore minerals, as indicated by galena-pyrrhotine and sulphide-baryte isotope temperatures from single specimens, but has not destroyed the primary sulphur isotope range indicating pre-existing sulphate concentrations.

scholarly journals Pre‐Klondikean oxidation prepared the ground for Broken Hill‐type mineralization in South Africa

Terra Nova ◽  
2020 ◽  
Author(s):  
Stefan Höhn ◽  
Hartwig E. Frimmel ◽  
Vinciane Debaille ◽  
Westley Price
Keyword(s):  
South Africa ◽  
Broken Hill

The Virus of Rinderpest and its Relation to Glossina morsitans, Westw.

1933 ◽  
Vol 24 (3) ◽  
pp. 337-342 ◽  
Author(s):  
J. Carmichael
Keyword(s):  
South Africa ◽  
Experimental Evidence ◽  
Historical Review ◽  
Tsetse Fly ◽  
Satisfactory Explanation ◽  
Glossina Morsitans ◽  
Wild Fauna ◽  
Low Country ◽  
In The Wild

The earliest known cases of the coincident disappearance of tsetse-fly from an area affected with rinderpest occurred in the Transvaal and Rhodesia in the early nineties of last century (Stevenson Hamilton, 1911 and 1912). There is no doubt that the fly either decreased or entirely disappeared from various districts in these two territories following the great rinderpest epizootic in the wild fauna. A satisfactory explanation has not yet been given to account for this remarkable phenomenon.Fuller (1923) in a most interesting historical review of the tsetse position in the Transvaal and neighbouring territories points out that although there had been a gradual shrinkage of the fly over a period of some years, the disappearance of Glossina from the Eastern low country of the Transvaal can be definitely attributed to the rinderpest epizootic. He further states (p. 347) that “ it has been shown experimentally that disease-laden blood does not militate immediately against the fly.” No reference is given in support of this statement, and I am unable to trace any published experimental evidence in this connection, with the exception of Duke's (1919) work, which is referred to later.Howard (1910), discussing the tsetse position in the Inhambane and Lourenço Marques districts of Portuguese Territory, states that after rinderpest passed over South Africa the fly began to disappear and that they had been unable to locate a single tsetse-belt in that portion of the country.

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