Summary: Kasurak et al. (2012)

 Signalling between conspecifics is rarely unimodal, relying rather on multiple signals used simultaneously. This makes testing the influence of multiple sensory modalities difficult, as often one type of sensory modality may be influenced by another. Kasurak et al. (2012) tested whether female round goby Neogobius melansotomus response to reproductive male stimuli were different when exposed either separately to the signals (unimodal response) or simultaneously (multimodal response). They also investigated the effect of female reproductive status on response to stimuli. Reproductive females were more responsive than nonreproductive females, and spent significantly more time in the stimulus presentation area when presented with multiple stimuli. However, they were still attracted to unimodal signals. Kasurak et al. (2012) suggest that male signals may vary in attractiveness depending on female reproductive state and that females may have a synergistic response when exposed to multimodal signals from males in breeding condition.