scholarly journals Who stole my nest? Weaver nests used as nest lining

2021 ◽  
Vol 1 (1) ◽  
pp. 1-3
Author(s):  
H. Dieter Oschadleus
Keyword(s):  
South Africa ◽  
Plant Material ◽  
Nest Material ◽  
Waterbird Species

Birds stealing nest material from a neighbour’s nest is well known, but stealing entire nests is less well known. This has been reported nine times for raptors and waterbirds taking the domed nests of weaverbirds. Three waterbird species and five raptor species are involved. Nests of four weaver species were identified. Three records were from Kwa-Zulu Natal in South Africa, and the rest from elsewhere in Africa. Weaver nests included green nests, but most were old nests, and at least one occupied nest (with eggs). Since green nests were not the norm, the weaver nests were probably taken as a source of plant material, rather than for any specific benefit relating to weaver nests.

Pithomyces chartarum. [Descriptions of Fungi and Bacteria].

1977 ◽  
Author(s):  
B. C. Sutton
Keyword(s):  
South Africa ◽  
Central America ◽  
Sierra Leone ◽  
Geographical Distribution ◽  
Plant Material ◽  
Solomon Islands ◽  
Glume Blotch ◽  
Wide Range ◽  
Facial Eczema ◽  
Sawn Timber

Abstract A description is provided for Pithomyces chartarum. Information is included on the disease caused by the organism, its transmission, geographical distribution, and hosts. HOSTS: Isolated from a very wide range of plant material, also from air, soil, hay, sawn timber and ceiling plaster. DISEASE: Facial eczema of sheep, glume blotch of rice and sorghum. GEOGRAPHICAL DISTRIBUTION: Europe (UK, Italy); Africa (Ghana, Guinea, Kenya, Malawi, Mauritius, Nigeria, Rhodesia, South Africa, Sierra Leone, Sudan, Tanzania, Togo, Zambia); Asia (Brunei, Burma, Hong Kong, India, Japan, Malaysia (W., Sabah), Nepal, Philippines, Sri Lanka); Australasia (Australia, New Zealand, New Guinea, Fiji, Tonga, British Solomon Islands); North America (USA, Canada); Central America (Cuba, Honduras, Jamaica, Panama, Trinidad, Windward Isles); South America (Argentina, Bolivia, Brazil, Guyana). TRANSMISSION: By air-borne spores.

scholarly journals A krimpsiekte-like syndrome in small stock poisoned by Ornithogalum toxicarium Archer & Archer

2000 ◽  
Vol 71 (1) ◽  
Author(s):  
C.J. Botha ◽  
R.A. Schultz ◽  
J.J. Van der Lugt ◽  
C. Archer
Keyword(s):  
South Africa ◽  
Cardiac Glycoside ◽  
Plant Material ◽  
Western Cape ◽  
Western Cape Province ◽  
Fresh Plant Material ◽  
Small Stock ◽  
First Time ◽  
Glycoside Poisoning ◽  
Fluorescence Polarisation

Krimpsiekte (the syndrome associated with chronic cardiac glycoside poisoning) was purportedly induced by Ornithogalum toxicarium in the Karas mountains area of Keetmanshoop, Namibia. This chinkerinchee species was previously linked to a condition known as 'kwylbek' krimpsiekte in small stock in the Beaufort West district of the Western Cape Province, South Africa. In a dosing trial, respiratory distress, tachycardia and sternal recumbency were observed in 2 sheep drenched with fresh plant material. A fluorescence polarisation immunoassay (FPIA) detected the presence of a substance that cross-reacted with digoxin antibodies in some of the plant material collected at Keetmanshoop and Beaufort West. This is the first time that apparent cardiac glycoside poisoning was induced by a southern African chinkerinchee species. The presence of the cardiac glycoside-like substance in O. toxicarium requires further chemical verification.

A new species of eriophyoid mite (Acari: Eriophyoidea: Eriophyidae) on Leucadendron argenteum (L.) R. Br. from South Africa

Zootaxa ◽  
2011 ◽  
Vol 3085 (1) ◽  
pp. 63
Author(s):  
DANIEL R. L. PYE
Keyword(s):  
South Africa ◽  
United Kingdom ◽  
New Species ◽  
Plant Material ◽  
Mite Species ◽  
The United Kingdom ◽  
Eriophyoid Mites ◽  
Eriophyoid Mite ◽  
A New Species

A new vagrant eriophyoid mite species, collected from plant material imported into the United Kingdom, is described and illustrated: Aceria argentae n. sp. found on Leucadendron argenteum (L.) R. Br. (Proteaceae) from South Africa. A review of the eriophyoid mite species known from plants in the Proteaceae is also provided and recent findings of non-native eriophyoid mites in the United Kingdom are discussed.

scholarly journals The karst ecology of the Bakwena Cave (Gauteng)

2012 ◽  
Vol 31 (1) ◽  
Author(s):  
François Durand ◽  
Antoinette Swart ◽  
Werner Marais ◽  
Candice Jansen van Rensburg ◽  
Johan Habig ◽  
...  
Keyword(s):  
South Africa ◽  
Habitat Fragmentation ◽  
Urban Development ◽  
Plant Material ◽  
Food Source ◽  
Foraging Area ◽  
Freshwater Amphipods ◽  
Bacteria And Fungi ◽  
Predatory Arthropods ◽  
Bat Guano

The Bakwena Cave houses a variety of organisms that form an intricate and interdependent food web. This cave is utilised as a permanent roost by a colony of Natal clinging bats. The bat guano and allochthonous plant material that fall into the cave from outside, form the basis of the ecology inside the cave which may be considered a typical example of a detritus ecosystem. Decomposers such as bacteria and fungi are responsible for the decay of the guano and plant detritus which, in turn, are utilised by several organisms, including nematodes and mites, as food source. These animals form the next trophic level which is utilised by predatory arthropods as food source. The Bakwena Cave is one of the few dolomitic caves in South Africa that provide access to the water table. The groundwater houses several types of organisms, including bacteria, fungi and animals – primarily nematodes and crustaceans. The Bakwena Cave is also the type locality for freshwater amphipods in Southern Africa. This unique and sensitive ecosystem is primarily dependent on bat guano. The grassland surrounding the cave is utilised by the bats as foraging area and is currently threatened by urban development and the resulting habitat fragmentation and destruction. A cascade of extinctions of the cave-dwelling organisms will follow if the bats abandon the cave.

New Trypetidae (Dipt.) from South Africa, II

1931 ◽  
Vol 22 (1) ◽  
pp. 115-126 ◽  
Author(s):  
H. K. Munro
Keyword(s):  
South Africa ◽  
New Species ◽  
Host Plant ◽  
Plant Material ◽  
British Museum ◽  
New Genera ◽  
Work In Progress ◽  
Publication Delay ◽  
State Of Affairs

The following descriptions axe based on material collected or reared by the author, together with specimens reared from host-plant material collected by colleagues to whom the author's thanks are due.From the descriptions it will be further evident that the generic location of new species is still difficult, but this state of affairs can only be remedied by a monographic revision of the African Trypetidae. It is felt, however, that although the author has such a work in progress, it is not desirable to hurry publication. Delay is advisable, especially in view of the number of new species continually being found, and the frequent need for the formation of new genera.Types of the new species are in the author's collection ; paratypes so far as available will be placed in the British Museum.

Oviposition by the banded fruit weevil, Phlyctinus callosus (Schoenherr) (Coleoptera: Curculionidae), in deciduous fruit orchards in South Africa

1989 ◽  
Vol 79 (1) ◽  
pp. 31-40 ◽  
Author(s):  
B. N. Barnes ◽  
K. L. Pringle
Keyword(s):  
South Africa ◽  
Cover Crop ◽  
Plant Material ◽  
Soil Surface ◽  
Fruit Trees ◽  
Dispersion Pattern ◽  
Western Cape ◽  
Deciduous Fruit ◽  
Fruit Orchards ◽  
Oviposition Sites

AbstractOviposition sites of Phlyctinus callosus (Schoenherr) in an apple and a nectarine orchard in the South Western Cape, South Africa, were investigated. No eggs were found on the fruit trees, only in different fractions of the orchard floor, viz. in orchard weeds, leaf litter and soil. Significantly more oviposition took place in plant material on the orchard floor than in the top 20 mm of the soil. Microscopic dissection of samples of such plant material revealed that females prefer to oviposit in confined or hollow spaces in moist, live or decaying plant tissue on the soil surface or in weeds comprising the cover-crop. P. callosus females favoured certain weeds above others for oviposition. The dispersion pattern of eggs in the cover-crop was contagious. The implications of the observed ovipostion behaviour in terms of control strategy, and for exploitation in a monitoring system for this species, are discussed.

scholarly journals Vermeersiekte caused by Geigeria burkei Harv. subsp. burkei var. hirtella Merxm. in the Northern Province of South Africa : research communication

1997 ◽  
Vol 68 (3) ◽  
Author(s):  
C.J. Botha ◽  
T.A. Gous ◽  
M-L. Penrith ◽  
T.W. Naudé ◽  
L. Labuschagne ◽  
...  
Keyword(s):  
South Africa ◽  
Plant Material ◽  
Northern Province ◽  
Research Communication ◽  
Material Analysis

The 1st field outbreak of vermeersiekte induced by Geigeria burkei Harv. subsp. burkei var. hirtella Merxm. is reported. It is also the first recorded outbreak of this disease in the arid sweet bushveld of the Northern Province of South Africa. The toxicosis was experimentally reproduced in a sheep following daily intraruminal administration of 2.5-5.0 g/kg dried, milled plant material for 18 consecutive days. Neither the sheep in the field outbreak nor the ewe in the experiment exhibited any signs of regurgitation of rumen contents (vermeersiekte). All developed only the stiff or paretic/paralytic forms of the disease. Serum activities of CK and GGT were slightly raised in clinically affected sheep (n = 11) during the field outbreak, and serum activities of AST, GLDH, GGT, LDH and CK increased in the ewe dosed with the plant material. Analysis of dried, milled Geigeria plant material confirms that this species is moderately nutritious.

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