Thomas Cronin, biological sciences, and Alexandra Kingston, Ph.D. candidate in biological sciences, worked with scientists at the Marine Biological Laboratory in Massachusetts to find that squid and cuttlefish possess light-sensitive proteins called opsins on their skin. Their findings were published in the Journal of Experimental Biology last week and have received widespread media coverage.
Their discovery suggests, but does not prove, that cephalopods might be able to sense light through their skin. “All the machinery is there for them to be light-sensitive but we can’t prove that,” Cronin told National Geographic. “We don’t know if they contribute to camouflage or are just general light sensors for circadian cycling or are driving hormonal changes. They have a job to do but we don’t know what it is.”
Click here to read “Octopuses, and Maybe Squid, Can Sense Light With Their Skin” in National Geographic.
Light Sensors in Cephalopod Skin (The Scientist)
Scientists say octopuses use opsins in their skin to detect light and color, not their eyes (Standard Daily)
Cephalopods can sense Light through Skin (NY City News)
Cephalopods skin is intrinsically light sensitive contributing to unique and novel patterning abilities (US Finance Post)
A new book written by Tom Cronin and colleagues — the publisher’s note says:
“Visual ecology is the study of how animals use visual systems to meet their ecological needs, how these systems have evolved, and how they are specialized for particular visual tasks. Visual Ecology provides the first up-to-date synthesis of the field to appear in more than three decades. Featuring some 225 illustrations, including more than 140 in color, spread throughout the text, this comprehensive and accessible book begins by discussing the basic properties of light and the optical environment. It then looks at how photoreceptors intercept light and convert it to usable biological signals, how the pigments and cells of vision vary among animals, and how the properties of these components affect a given receptor’s sensitivity to light. The book goes on to examine how eyes and photoreceptors become specialized for an array of visual tasks, such as navigation, evading prey, mate choice, and communication.”
Update: The Guardian post
“When you look at a mantis shrimp, you see a vivid lobster-like crustacean whose forearms can strike with the force of a .22-caliber bullet. But when a mantis shrimp looks at you, we have no idea what it sees. That’s because the mantis shrimp possesses one of the most complex eyeballs on the planet, an organ that allows it to perceive a rainbow of colors in both the visible and ultraviolet spectrum without the massive brainpower required for human vision,” so writes Julia Rosen of the Los Angeles Times.
Rosen’s story, Mantis shrimp wear tinted shades to see UV light, tells of Tom Cronin and Michael Bok’s paper. Cronin is a professor of biology and Bok a graduate student who has now moved on to a post doc at Lund University.
The paper, which was recently published in the journal, Current Biology, reported that, “that that mantis shrimp use a set of filters to separate ultraviolet light into discrete colors that get picked up by the animals’ photoreceptors.”
Please join the Biological Sciences department for an Open House to explore the Applied Molecular Biology Masters Program, where you can earn a Master’s degree in nine months. The event is on February 24, 2014 from 12-1pm in UC 312.
Maricel Kann, assistant professor in the department of biological sciences, recently published a new online book, Translational Bioinformatics on PLOS-CB (first open access book in PLOS.)
This is a great resource for our students, the textbook is a good introduction to many of the topics in the emerging field of Translational Bioinformatics, and it is free to all, says Kann.
The e-pub file is downloadable from the collection page:
It’s also in mobi format for Kindle users. If you don’t have an ipad/tablet/ereader to view the epub or mobi file on, you should be able to view it on Firefox if you download this add-on: https://addons.mozilla.org/en-US/firefox/addon/epubreader/
The American Association of Immunologists (AAI) awarded Dr. Suzanne Ostrand-Rosenberg, Department of Biological Sciences Professor, the 2013 Excellence in Mentoring Award “[i]n recognition of exemplary career contributions to a future generation of scientists.”
View the official announcement and see other award recipients at the American Association of Immunologists website.