Tags » Eye Evolution

What genes tell us about pinhole- and camera-eye evolution in cephalopods

By Nolan Lassiter (Pitzer College) and Ryan Madden (Pitzer College) .

Imagine how difficult it would be to climb the evolutionary ladder without being able to see! 1,092 more words


San Diego Zoo

As part of my class on “Sensory Evolution” we went on a field trip to the San Diego Zoo. A few impressions below. Can you spot the nictitating membrane in the Komodo Dragon and the cloudy eye in the Gopher Snake (indicative of imminent moulting?). 72 more words

Other Entries

Are the eyes of giant squid unusually large?

Giant squid are arguably one of the most fascinating and enigmatic marine organisms. We just don’t know much about their natural history and morphology at all, and the little that we do know makes them even more interesting: their enormous size, their big eyes (only matched by the extinct ichthyosaurs in terms of absolute size), their preferred habitat at great depth, the epic ‘battles’ with sperm whale (see photo below). 745 more words


New study sheds light on how and when vision evolved

The researchers developed a timeline with an opsin ancestor common to all groups appearing some 700 million years ago.¬† This opsin was considered ‘blind’ yet underwent key genetic changes over the span of 11 million years that conveyed the ability to detect light.

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What Good is Half of Half of an Eye?

For those of us in academic fields, there are always a handful of famous quotes that come up over and over again ad nauseam. In evolutionary biology, I feel personally fortunate if I can make it through a half dozen lectures without seeing geneticist¬†Theodosius Dobzhansky’s quote¬†“ 711 more words

An optical illusion?

Zooplanktivory is one of the most distinct feeding niches in coral reef fish and many morphological traits have been interpreted as adaptations to feeding on plankton in the water column above the reef. 327 more words


The eyes have it!

My goal is to develop this blog into an interesting resource for anyone who is interested in the evolution of eyes. In my own research I mostly focus on morphological evolution of vertebrate eyes, including reef fish, mammals, lizards, plus dinosaurs and birds, but I will branch out and find other interesting pieces about eye evolution. 19 more words