Unexpected occurrence of Haemonchus placei in cattle in southern Western Australia
Abdul Jabbar, Jenny Cotter, Jill Lyon, Anson V Koehler, Robin B Gasser, Brown Besier
INFECTION GENETICS AND EVOLUTION | ELSEVIER SCIENCE BV | Published : 2014
Haemonchus placei is an abomasal parasite of cattle, primarily in tropical and subtropical areas of the world. In Australia, this nematode can be extremely pathogenic in summer rainfall areas, particularly in the hot, sub-tropical Kimberley region, in the far north of the state of Western Australia (WA). Although cattle are occasionally transferred to southern parts of WA, it was believed that H. placei did not occur in southern regions of WA, as it is less cold-adapted than Haemonchus contortus, and the free-living stages would not develop during the cold winter and dry summer periods. Here, we show that, although H. contortus is found in cattle in the temperate southern region of WA, it ap..View full abstract
The infection experiment was approved by the Ethics Committee of the Department of Agriculture and Food, WA (AEC 2-10-10). The able assistance of Heide Gutelich, Jo Hislop and Esther Spence from the Albany Animal Health Laboratories is gratefully acknowledged. The molecular work in the present study was supported by the Australian Research Council (RBG) and Collaborative Research Grant from The University of Melbourne (AJ).