Behavior and habitat clutter interact to explain gecko eye size evolution
Lars Schmitz
News from the Schmitz Lab: Geckos are a diverse group of reptiles which may owe their popularity to their large eyes. However, not all geckos have large eyes and it has been proposed that these eye size differences may be linked to differences in behavior. While night-active geckos have large eyes with better dim-light vision, day-active geckos have smaller and metabolically cheaper eyes. Our evolutionary analysis shows that behavior alone cannot fully explain the observed pattern, with habitat clutter emerging as a new factor in explaining eye size. To better understand eye evolution, future studies should be more integrative and also include retina structures.  


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