Keymer A E
Parasitology. 1980 Oct;81(2):405-21. doi: 10.1017/s0031182000056134.
An experimental study of the effects of parasitism by H. diminuta on the intermediate host, Tribolium confusum, is described. No density-dependent constraints on parasite establishment within individual hosts are evident, although a reduction in cysticercoid size at high parasite burdens is demonstrated. The relationship between parasite burden, host mortality and host fecundity is investigated. Host mortality is linearly related to parasite burden, whereas the relationship between parasite burden and host fecundity is non-linear. There is no difference in viability between eggs from infected and uninfected females. The generative causes of these effects are not investigated experimentally, although it is postulated that survival is related to the degree of damage to the midgut wall caused by parasite penetration, and fecundity to the biomass of parasites harboured by the host. The significance of these effects is discussed in relation to the overall dynamics of the host-parasite association.
本文描述了一项关于微小膜壳绦虫寄生对中间宿主杂拟谷盗影响的实验研究。尽管在高寄生虫负荷下证明囊尾蚴大小会减小，但在个体宿主体内寄生虫建立过程中，未发现明显的密度依赖性限制。研究了寄生虫负荷、宿主死亡率和宿主繁殖力之间的关系。宿主死亡率与寄生虫负荷呈线性关系，而寄生虫负荷与宿主繁殖力之间的关系是非线性的。感染和未感染雌性所产的卵在活力上没有差异。虽然推测存活率与寄生虫穿透对中肠壁的损伤程度有关，繁殖力与宿主携带的寄生虫生物量有关，但并未通过实验研究这些影响的产生原因。本文结合宿主 - 寄生虫关联的整体动态讨论了这些影响的意义。
