Sometimes animals use features of the environment to assess the quality of a habitat, which is beneficial as long as these indicators remain strongly correlated with the true richness of the habitat.
Some human-induced habitat changes can alter this relationship such that these indicators are no longer correlated with habitat richness.
The continuous use of these cues, which are now misleading, could jeopardize their growth, survival, or reproduction.
Such situations correspond to an ecological trap.
Tuna species have always associated with logs or other plant debris drifting on the surface of the oceans.
By deploying artificial FADs, fishers ultimately modify the habitat of tuna by increasing the number of floating objects.
Does this modification lead tuna to go to poorer areas (following FADs), with negative effects on their fitness, growth, or reproduction?