Estudo da dinâmica das carraças - ixodidae no gado bovino na Empresa Pecuária de Boane E.P.B.

Abstract

Six tick-infested animals were studied from 104 belonging to the cattle herd of Empresa Pecuária de Boane, Maputo-Mozambique, from March 1993 to April 1994, with the aim of evaluating the dynamics of Ixodideans in cattle during the dry and rainy seasons. in accordance with climate variation factors (humidity, rainfall and temperature). Data were analyzed using statistical methods: regression analysis, analysis of covariance and Duncan's test. The results obtained for each tick species in relation to the total sample were 33.70% of Amblyomma hebraeum being 55.84% female and 44.16% male; 27.30% of Rhipicephalus append!cuia tus being 54.57% female and 45.43% male; 14.38% of Boophilus decoloratus being 63.00% female and 37.00% male; 13.76% of Boophilus microplus being 49.83% females and 50.17 males; 5.77% of Hyalomma truncatum being 44.29% female and 55.71% male; 5.02% of Rhipicephalus evertsi evertsi being 56.69% female and 43.31% male. The most abundant species with peaks of great infestation were A. hebraeum with two peaks, one in July and the other in October; and R. appendiculatus with three peaks, the first in June, the second in October and the third in February. According to predilection, ticks were globally observed in the head, body and paw regions with mean values ​​of 4*.77, 10.27 and 2.50 respectively. It was found that there is a relationship between tick dynamics and abiotic factors (humidity, temperature and rainfall). The higher the humidity and the lower the temperature and precipitation, the more ticks can be found.