Dohany A L, Shirai A, Lim B L, Huxsoll D L
Jpn J Med Sci Biol. 1980 Oct;33(5):263-70. doi: 10.7883/yoken1952.33.263.
The populations of scrub typhus vector chiggers were compared in two developing oil palm areas, one 5 years old and the other 7 years old at the inception of the study. Both areas were located within the same oil palm scheme in central Peninsular Malaysia. Leptotrombidium (L.) deliense, a principal vector of scrub typhus in Malaysia, was found in reduced numbers in the older oil palm habitat. This reduction is attributed to changes in the microhabitat, specifically the elimination of grasses between the oil palm trees due to canopy shading and to cultural practices.
在马来西亚半岛中部的同一项油棕种植计划中，对两个开发中的油棕种植区恙虫病媒介恙螨的种群进行了比较。在研究开始时，一个种植区已有5年历史，另一个已有7年历史。马来西亚恙虫病的主要传播媒介地里纤恙螨在较老的油棕栖息地数量减少。这种减少归因于微生境的变化，特别是由于树冠遮荫和种植方式导致油棕树之间的草丛消失。
