Exaggerated displays do not improve mounting success in male seaweed flies Fucellia tergina (Diptera: Anthomyiidae).

摘要: Signals of individual quality are assumed to be difficult exaggerate, either because they directly linked underlying traits (indices) or costly perform (handicaps). In practise advertisement displays may consist conventional and components, for instance where a morphological structure related body size is used in visual displays. this case, there the potential dishonest displays, due population level variance around relationship between display structures. We examine use wing flicking that we observed situ strandline dwelling seaweed fly Fucellia tergina, using overall their eyes as indicators condition. Males displayed far more frequently than females, were also mount other flies, behaviour was rare females. The rate greater males had positive residual values from relationships length length. words those with larger expected wings frequently, indicating these open exaggeration. (for eyes), however, mounted less frequently. suggest small bodied successful terms mounting, but relatively large attempt compensate through increased effort.