| characterization of trypanosoma congolense serodemes in stocks isolated from chipata district, zambia. | six stocks of trypanosoma congolense were cloned from 17 stocks isolated from eastern zambia and used to initiate insect-form in vitro cultures producing metacyclic trypanosomes. serological assays were then developed using these in vitro-derived metacyclics as a reference collection of antigens. monoclonal antibodies recognized 8 metacyclic variable antigen types (m-vats) of one stock, t. congolense treu 1885, representing 70-80% of that stock's m-vat repertoire, and in an indirect fluorescent ... | 1990 | 2263418 |
| diapause induction in adults of three rhipicephalus appendiculatus stocks. | newly-moulted adults of three rhipicephalus appendiculatus stocks, originating from kenya, zambia and zimbabwe, were kept in different photoperiods (12h:12h, 13h:11h and 14h:10h light:dark). the stock originating from kenya showed almost no behavioural diapause in any of these day lengths, whereas virtually all individuals of the zimbabwean stock entered a behavioural diapause irrespective of day length. adults from the eastern province of zambia, a transition zone between the multivoltine pheno ... | 1999 | 10737730 |
| a study of the diapausing behaviour of rhipicephalus appendiculatus and r. zambeziensis under quasi-natural conditions in zambia. | the diapausing behaviour of rhipicephalus appendiculatus was studied under quasi-natural conditions in the eastern province of zambia. newly-moulted adults of ticks indigenous to the study area entered a behavioural diapause when exposed to daylengths below a critical photoperiod, provisionally a daylength between 11 h 20 min and 11 h 45 min. in the eastern province of zambia the diapause was apparently not terminated by a long-day signal, but by a weakening of the photoperiodic maintenance of t ... | 1995 | 7548950 |