Sand-bubbler crabs distinguish fiddler crab signals to predict intruders

There is growing evidence that animals gain information from heterospecifics, but utilising other species’ signals has rarely been reported in invertebrates. Herein, I conducted field experiments a mixed colony of two crab species, Scopimera globosa and Austruca lactea, to test whether S. discriminate several different displays neighbouring male A. lactea. Three types ‘intruders’ (male or female predatory crab, Helicana japonica) were exhibited the ‘performer’ lactea) elicit four actions (courtship, aggressive, defensive displays, evasive behaviours). The performer, not presence intruder, ‘audience’ lactea globosa); behaviours audience recorded analyse could take advantage neighbours. behaviour performers elicited similar rates conspecific heterospecific audiences. Furthermore, courtship aggressive significantly heterospecifics. are more intensive than its displays; therefore, reactions did simply increase with intensity performers’ displays. Presumably, recognises by do indicate undesirable circumstances. Altogether, able distinguish as well an ability may contribute their estimation risk level approaching intruders. By using experiments, demonstrated sand-bubbler crabs distinguished fiddler showed frequently when they see performed crab) crab; sand bubbler have eavesdropped on utilised predict To best my knowledge, distinguishing species found only some mammals, birds, reptiles.