CONTRIBUTION TO THE STUDY OF THE TICK VEC TORS (ACARINA, IXODINA) OF THE CRIMEAN-CONGO HEMORRHAGIC-FEVER VIRUS (CCHF) IN SENEGAL .3. RHIPICEPHALUS GUILHONI MOREL ET VASSILLIADES, VARIATIONS IN SIZE AS A FUNCTION OF PARASITIC LOAD - EPIDEMIOLOGIC CONSEQUENCES

The higher the number of ticks located on one host, the smaller will b e the size of the adults collected. The number of eggs laid will be re duced, with a consequential affect on the spreading of the virus. On a rabbit, 5 larvae were placed at one site and 15 at another: the avera ge length of the adults collected was respectively, 3.03 mm and 2.97 m m. On another rabbit the length of the adults obtained from 5 larvae a t one site was 2.80 mm, and 2.47 mm for 200 larvae from the other.