Changes in DNA and RNA in roots of bur marigold fed upon by Longidorus africanus were studied using analytical methods, radioactive precursors, and analytical CsC1 density-gradient centrifugation. The analyses showed that almost twice as much RNA and DNA was present in parasitized root tips as in those of nonparasitized control plants. Studies on the rates of incorporation of labeled thymidine ...

The virus was first isolated in April 1947 from a rhesus macaque monkey placed cage the Ziika Forest of Uganda, near Lake Victoria, by scientists Yellow Fever Research Institute. A second isolation mosquito A. africanus followed at same site January 1948. When developed fever, researchers its serum

Mycobacterium ulcerans, the etiologic agent of Buruli ulcer, has been detected on aquatic plants in endemic tropical regions. Here, we tested the effect of several tropical plant extracts on the growth of M. ulcerans and the closely related Mycobacterium marinum. M. ulcerans and M. marinum were inoculated on Middlebrook 7H11 medium with and without extracts from tropical aquatic plants, includi...

The acute toxicity of Nigeria Bonny light crude oil against hermit crab, Cliabanarius africanus of a tidal creek, Eastern Obolo, Akwa Ibom State, Nigeria was investigated in the laboratory under static bioassay. The test crude oil was found to be poorly toxic to the test organism, resulting in delayed mortality and consequent extension of the bioassay to 8 days. Based on the LC50, the toxicity ...

Genetic data from extant donkeys (Equus asinus) have revealed two distinct mitochondrial DNA haplogroups, suggestive of two separate domestication events in northeast Africa about 5000 years ago. Without distinct phylogeographic structure in domestic donkey haplogroups and with little information on the genetic makeup of the ancestral African wild ass, however, it has been difficult to identify...

We describe late Pliocene and early Pleistocene hominin fossils from Sterkfontein Caves (South Africa), including two femoral specimens, as well a partial tibia fibula. The are likely assignable to Australopithecus africanus and/or prometheus the morphology of each corroborates previous interpretations hominins at least facultative bipeds.
 Significance:
 
 A recent series papers...

The diets of Australopithecus africanus and Paranthropus robustus are hypothesized to have included C4 plants, such as tropical grasses and sedges, or the tissues of animals which themselves consumed C4 plants. Yet inferences based on the craniodental morphology of A. africanus and P. robustus indicate a seasonal diet governed by hard, brittle foods. Such mechanical characteristics are incompat...

We report here the complete genome sequence of "Candidatus Liberibacter africanus" strain PTSAPSY. The 1,192,232-bp genome with 34.5% G+C content comprises 1,017 open reading frames, 44 tRNAs, and three complete rRNAs in a circular chromosome.

Current study was designed to validate the use of tail feathers as non-invasivebiomonitoring tool and compare its barb calamus parts for bioaccumulation heavy metals viz.Cd, Cr, Pb, Cu, Hg As in white backed vulture (Gyps africanus). A total 8 samplescollected from eight birds were analyzed. All studied except detectedin G. Africanus. We corroborated non-invasive biomonitoringtool all As. In ge...

The relative acute toxicity of spent lubricant oil and detergent was evaluated against hermit crab, Clibanarius africanus (Aurivillus) and periwinkle, Tympanotonus fuscatus (L) from the Lagos lagoon in laboratory bioassays. Based on the derived toxicity indices, the detergent (96 hr LC50 = 5.77ml/l) was found to be 1.73 times more toxic than spent engine oil (96 hr LC50 = 10.01 ml/l) when actin...