... experimentally increased foraging costs and thus breeding constraints by handicapping Adélie penguins ( Pygoscelis adeliae ) with dummy devices representing 3–4% of the penguins' cross-sectional area. We examined food-related stress ( via plasma corticosterone concentration) and nutritional state ( via...

... electric organ discharge sexual selection sensory exploitation sensory bias playback stimulation electrocommunication handicap predation pressure Weakly electric fish generate electric organ discharges (EODs) for nocturnal electrolocation and electrocommunication (for reviews, see Kramer...