0 a small crustacean that is similar in appearance to a shrimp but has no shell
1 a small crustacean (= animal that lives in water) that is similar in appearance to a shrimp but has no shell
A perfectly identical plastic container was also filled with the same amount of seawater and had five amphipods from the control groups introduced into it.
The amphipods occurred mainly on the emerged areas.
Under normal circumstances, the amphipods help to stabilise the substrate with their tube-building activity.
Actual sample sizes are the numbers of amphipods harbouring at least enough worms to be included in the regression, and are given in parentheses.
These tests were performed in complete ignorance of the infection status of individual amphipods, which was determined subsequently.
Likewise, the year-round presence of cystacanths in amphipods revealed that the acanthocephalan infects fish throughout the year.
Parasitized amphipods were generally found lower in the water column than control amphipods (fig. 2).
There is, however, one very well-studied host- parasite association, between an intertidal amphipod and its trematode parasites, for which sufficient information is available.
