Wang C L, Renaud F, Thomas F
Centre d'Etude sur le Polymorphisme des Micro-Organismes, CEPM/UMR CNRS-IRD 9926, Equipe: Evolution des Systèmes Symbiotiques, IRD, Montpellier, France.
J Parasitol. 2002 Apr;88(2):425-7. doi: 10.1645/0022-3395(2002)088[0425:NIOGGN]2.0.CO;2.
The gammarid amphipod Gammarus insensibilis frequently harbors adult individuals of the ectoparasitic nematode Gammarinema gammari as well as metacercariae of the trematode Microphallus papillorobostus. After the demonstration in a previous study of a negative relationship between the abundance of these 2 parasites, the nature of the relationship between these 2 parasites was explored in more detail by studying, in the field and in the laboratory, the influence of nematode abundance on trematode fecundity. In gammarids collected in the field, a negative relationship between metacercarial fecundity and the number of co-occurring nematodes was found. By manipulating the nematode abundance in the laboratory, it was confirmed that G. gammari has a negative effect on egg production in M. papillorobustus.
普通钩虾（Gammarus insensibilis）常常携带外寄生线虫（Gammarinema gammari）的成虫个体以及吸虫（Microphallus papillorobostus）的后尾蚴。在之前的一项研究证明了这两种寄生虫的丰度之间存在负相关关系之后，通过在野外和实验室研究线虫丰度对吸虫繁殖力的影响，对这两种寄生虫之间关系的本质进行了更详细的探究。在野外采集的钩虾中，发现后尾蚴繁殖力与同时存在的线虫数量之间存在负相关关系。通过在实验室中控制线虫丰度，证实了线虫对吸虫的产卵有负面影响。
