Seasonal variation of Boophilus microplus (Canestrini, 1887) (Acari: Ixodidae) in cattle in Minas Gerais state, Brazil

被引:22
作者
Lima, WS [1 ]
Ribeiro, MF [1 ]
Guimaraes, MP [1 ]
机构
[1] Univ Fed Minas Gerais, Dept Parasitol ICB, BR-31270901 Belo Horizonte, MG, Brazil
关键词
breed; Boophilus microplus; cattle; climate; epidemiology; rainfall; season; ticks;
D O I
10.1023/A:1005229602422
中图分类号
S8 [畜牧、 动物医学、狩猎、蚕、蜂];
学科分类号
0905 ;
摘要
The seasonal variation of the tick Boophilus microplus in the 'Regiao Metalurgica' region of Minas Gerais state was studied using 26 Bos taurus (Holstein)xBos indicus (Gir) calves, of which 16 animals were 3/4 Holsteinx1/4 Gir and 10 were 3/4 Girx1/4 Holstein. Monthly tick counts were made between March 1996 and March 1998 and, although B. microplus infestations occurred throughout the year, they were greater during the rainy season. Rainfall was the climatic factor that most affected the seasonal variation. The animals with a preponderance of Holstein blood presented infestations that were significantly (p <0.05) greater than those of the other cross. Five of the animals (19.2%) maintained 45.5% of the parasite load of the entire group.
引用
收藏
页码:375 / 380
页数:6
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