Experimental clam species detection. (A) Diagram of the experimental setup. The reconstituted communities are created in two replicates with different numbers of animals represented by coloured clams, and the remaining clams are grouped in aquariums AQ13 (n = 25) and AQ14 (n = 47). The two empty aquariums (AQ01 and AQ07) are filled with the same canal water as the other aquariums. (B) Relative abundance of the species detected in the different aquariums. The species are identified by a colour code: P. aureus in yellow, R. decussatus in green, and R. philippinarum in red.