Valepotriates, mainly isovaltrate and valtrate, have been separated and quantitatively estimated by reversed-phase HPLC in the leaves, flowers, stems and rhizomes of Valeriana kilimandascharica. The isovaltrate/valtrate ...

Patterns of antorbital gland marking by a free-living territorial male gerenuk were investigated in two-week periods in two consecutive years. Marks were removed after the first year and an experimental replicate thus ...

Summary Various savannah reserves are examined to determine whether they are likely to lose substantial numbers of large herbivores if they become isolated. The relationship between the number of ungulate species and ...

A major factor in the geographical distribution of endemic schistosomiasis in Kenya is the discontinuous distribution of intermediate hosts. Biomphalaria pfeifferi is the main transmitter of S. mansoni and is found in the ...

Eleven patients with classical Méniére's disorder were examined electrophysiologically using extratympanic electrocochleography. All had been fully investigated audiologically and by electronystagmography. In addition to ...

The Brazilian shrub Baccharis megapotamica contains significant amounts of antibiotic trichothecenes. When these plants are grown in the United States, they are devoid of the mycotoxins. Feeding experiments with fungus-produced ...

Some 5700 Ruffs were ringed in the southern Kenyan rift valley during 1967–79, mainly at Lakes Nakuru and Magadi. These have produced 15 recoveries outside East Africa, 14 in Siberia between 73° and 154°E and one in ...