A visual audience effect in a cavefish Martin Plath 1,4) , Dennis Blum 2) , Ralph Tiedemann 2) & Ingo Schlupp 3) ( 1 Unit of Animal Ecology, Department of Biochemistry and Biology, University of Potsdam, Maulbeerallee 1, 14469 Potsdam, Germany; 2 Unit of Evolutionary Biology and Systematic Zoology, Department of Biochemistry and Biology, University of Potsdam, Karl-Liebknecht-Str. 24–25, 14476 Potsdam, Germany; 3 Department of Zoology, University of Oklahoma, 730 Van Vleet Oval, Norman, OK 73019, USA) (Accepted: 17 January 2008) Summary Audience effects occur when an observing (by-standing) animal influences the behaviour of an observed individual. A recent study (Plath, M., Blum, D., Schlupp, I. & Tiedemann, R., Anim. Behav. 75, 21-29 (2008)) has demonstrated an effect of a visual audience male on male mating preferences in the surface form of a livebearing fish, the Atlantic molly ( Poecilia mexicana ). Surface dwelling P. mexicana are highly aggressive; hence, males dedicating simultaneous attention to mate choice and aggressive interactions may explain this audience effect. Here we examined the effect of an audience on male mate choice in the cave form of that species, which — unlike other cavefishes — have maintained eyes and still respond to visual
Behaviour – Brill
Published: Jan 1, 2008
Keywords: MATE CHOICE; SPERM COMPETITION; CAVEFISH; COMMUNICATION NETWORKS; AGGRESSIVE BEHAVIOUR
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