Strømnes E, Andersen K
Zoological Museum, University of Oslo, Norway.
Parasitol Res. 1998;84(4):281-5. doi: 10.1007/s004360050396.
The frequency distribution of Anisakis simplex L3 larvae between host tissues was investigated in three host species: saithe, cod and redfish. Fish were sampled from Norwegian coastal waters and examined for the presence of A. simplex in muscle and viscera. In all three of the host species, A. simplex larvae were most frequently detected in the viscera; the percentages of total infection for saithe, cod and redfish were 99.6%, 97.8% and 88.0%, respectively. In general, the distribution patterns of A. simplex L3 between muscle and viscera were not significantly affected by host size. The observations that distributions vary between species and are not affected by host size do not support an earlier hypothesis which states that A. simplex L3 distributions are determined by an optimal pre-encapsulation migratory distance within host tissues. In contrast, it is suggested that A. simplex L3 distributions are governed by the conditions encountered within host tissues, and are possibly related to the availability of nutrients.
研究了简单异尖线虫L3期幼虫在三种宿主组织中的频率分布，这三种宿主分别是：黑线鳕、鳕鱼和红鱼。从挪威沿海水域采集鱼类样本，并检查其肌肉和内脏中是否存在简单异尖线虫。在所有这三种宿主中，简单异尖线虫幼虫最常在内脏中被检测到；黑线鳕、鳕鱼和红鱼的总感染率分别为99.6%、97.8%和88.0%。一般来说，简单异尖线虫L3期幼虫在肌肉和内脏之间的分布模式不受宿主大小的显著影响。分布因物种而异且不受宿主大小影响这一观察结果并不支持早期的一个假设，该假设认为简单异尖线虫L3期幼虫的分布是由宿主组织内最佳的预包囊迁移距离决定的。相反，有人提出简单异尖线虫L3期幼虫的分布受宿主组织内所遇到的条件支配，并且可能与营养物质的可利用性有关。
