Canyon D V, Hii J L, Muller R
Department of Public Health and Tropical Medicine, James Cook University, Townsville, Qld., Australia.
Ann Trop Med Parasitol. 1998 Apr;92(3):311-6. doi: 10.1080/00034989859889.
The effects of host activity, host defensive behaviour and biting persistence on multiple host-feeding by Aedes aegypti (L.) were investigated, in laboratory conditions, on human volunteers. In four different settings, four or five volunteer hosts displayed inactive, mildly active, mildly defensive and highly defensive behaviour. Into each of the four trials, each with 20 replicates, a single mosquito was released for a period of 10 min. In all settings, the median number of hosts sought per mosquito was constant, regardless of host activity and host defensive behaviour. Host defensive behaviour was thus not seen to exert a selective pressure on mosquitoes to abandon their hosts. No relationship was found between biting persistence and the number of hosts sought, indicating that biting persistence does not affect disease transmission. As one of the female hosts was consistently and significantly less attractive to host-seeking mosquitoes than any other volunteer in all four settings, it seems that some individuals are significantly less at risk from mosquito-borne pathogens than others.
在实验室条件下，以人类志愿者为对象，研究了宿主活动、宿主防御行为和叮咬持续性对埃及伊蚊多次叮咬宿主的影响。在四种不同的场景中，四到五名志愿者宿主分别表现出不活动、轻度活动、轻度防御和高度防御行为。在四个试验中的每个试验里，每个试验有20次重复，每次释放一只蚊子，持续10分钟。在所有场景中，每只蚊子寻找的宿主数量中位数是恒定的，与宿主活动和宿主防御行为无关。因此，未发现宿主防御行为对蚊子放弃宿主施加选择压力。未发现叮咬持续性与寻找的宿主数量之间存在关联，这表明叮咬持续性不影响疾病传播。由于在所有四种场景中，有一名女性宿主对寻找宿主的蚊子的吸引力始终显著低于其他任何志愿者，似乎有些人感染蚊媒病原体的风险明显低于其他人。
