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Diamond Sb

Diamond Sb

Diamond Sb

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DiamondSb

... predation. Diamonds were equal in area to the circles, so were designed to present a stimulus of similar conspicuousness, but less obviously eye-like in appear- ance. Second, we tested for a difference in survival between targets possessing markings which had a black centre with a white surround compared to the opposite (inverse) arrangement (Fig. 4). As with experiment 2, the white-round-black pattern was subjectively more eye- like, as pupils are generally darker than irises. On each tar- get was a pair of eyespots, consisting of a black and a white component of exactly equal area; thus, the average lumi- nance of each target was mid-grey. A fifth treatment, the control. aversive signals to preda- tors because they mimic eyes is deeply ingrained in popular literature. This is despite the fact that there has been no strong evidence found to date supporting this idea (Stevens 2005). Even the term 'eyespot' is deeply Figure 11. Gaussian low-pass (five pixel radius) filtered eyespot patterns used in experiment 4 (Fig. 4), illustrating the similarity of diamonds and circles when viewed. predation. Diamonds were equal in area to the circles, so were designed to present a stimulus of similar conspicuousness, but less obviously eye-like in appear- ance. Second, we tested for a difference in survival between targets possessing markings which had a black centre with a white surround compared to the opposite (inverse) arrangement (Fig. 4). As with experiment 2, the white-round-black pattern was subjectively more eye- like, as pupils are generally darker than irises. On each tar- get was a pair of eyespots, consisting of a black and a white component of exactly equal area; thus, the average lumi- nance of each target was mid-grey. A fifth treatment, the control, was a

... as aversive signals to preda- tors because they mimic eyes is deeply ingrained in popular literature. This is despite the fact that there has been no strong evidence found to date supporting this idea (Stevens 2005). Even the term 'eyespot' is deeply Figure 11. Gaussian low-pass (five pixel radius) filtered eyespot patterns used in experiment 4 (Fig. 4), illustrating the similarity of diamonds and circles when viewed at a ... (Source: www.researchgate.net)

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