oa Journal of the Entomological Society of Southern Africa - Humidity preferences of engorged females of Boophilus decoloratus (Koch) (Acari: Ixodidae) and behavioural mechanisms involved



The ticks were tested at intervals, until after the onset of oviposition, in choice chambers providing two humidities. Between tests they were kept at 100, 33, or 0 % R.H. In chambers offering 100/33 % R.H. the ticks initially showed dry-preference; from three days after collection until the sixth (last) day those kept at high humidity and 25�C showed wet-preference, those kept at the lower humidities also showed wet-preference except on the fifth day.


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