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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 the diapause because of increasing age of the ticks. Adults of a reference stock indigenous to Kenya also entered a diapause when exposed to daylengths below the same threshold and maintained this diapause for the same length of time. Adults of a reference stock of Rhipicephalus zambeziensis indigenous to Zimbabwe did not enter a diapause when exposed to the same daylengths. The relevance of the findings is discussed in relation to the distributions of the two species.
D L Berkvens, and
R G Pegram, and
J R Brandt
December 1986,
Experimental & applied acarology,
D L Berkvens, and
R G Pegram, and
J R Brandt
January 2007,
Experimental & applied acarology,
D L Berkvens, and
R G Pegram, and
J R Brandt
September 2005,
Medical and veterinary entomology,
D L Berkvens, and
R G Pegram, and
J R Brandt
January 2003,
Experimental & applied acarology,
D L Berkvens, and
R G Pegram, and
J R Brandt
December 1989,
The Onderstepoort journal of veterinary research,
D L Berkvens, and
R G Pegram, and
J R Brandt
December 2004,
Journal of vector ecology : journal of the Society for Vector Ecology,
D L Berkvens, and
R G Pegram, and
J R Brandt
June 2003,
Parasitology,
D L Berkvens, and
R G Pegram, and
J R Brandt
September 1987,
Annales de la Societe belge de medecine tropicale,
D L Berkvens, and
R G Pegram, and
J R Brandt
August 1973,
Tropical animal health and production,
D L Berkvens, and
R G Pegram, and
J R Brandt
November 1990,
Experimental & applied acarology,
