Navigation Links
Spookfish uses mirrors for eyes
Date:1/7/2009

A remarkable new discovery shows the four-eyed spookfish to be the first vertebrate ever found to use mirrors, rather than lenses, to focus light in its eyes.

Professor Julian Partridge from the University of Bristol, said: "In nearly 500 million years of vertebrate evolution, and many thousands of vertebrate species living and dead, this is the only one known to have solved the fundamental optical problem faced by all eyes how to make an image using a mirror."

While the spook fish looks like it has four eyes, in fact it only has two, each of which is split into two connected parts. One half points upwards, giving the spookfish a view of the ocean and potential food above. The other half, which looks like a bump on the side of the fish's head, points downwards into the abyss below. These 'diverticular' eyes are unique among all vertebrates in that they use a mirror to make the image.

Very little light penetrates beneath about 1000m of water and like many other deep-sea fish the spookfish is adapted to make the most of what little light there is. At these depths it is flashes of bioluminescent light from other animals that the spookfish are largely looking for. The diverticular eyes image these flashes, warning the spookfish of other animals that are active, and otherwise unseen, below its vulnerable belly.

Although the spookfish was first discovered 120 years ago, no one had discovered its reflective eyes until now because a live animal had never been caught. When Professor Hans-Joachim Wagner from Tuebingen University caught a live specimen off the Pacific island of Tonga, members of his research team used flash photography to confirm the fish's upward and downward gazes.

Photographs taken by Dr Tammy Frank looking down on the live fish produced eye-shine in the main tubular eyes that point upwards, but not in the diverticular eyes that point downward. Instead, these reflect light when seen from below.

<
'/>"/>
Contact: Cherry Lewis
Cherry.lewis@bristol.ac.uk
44-117-928-8086
University of Bristol
Source:Eurekalert  

Page: 1 2

Post Your Comments:
*Name:
*Comment:
*Email:
Related Image:
Spookfish uses mirrors for eyes
(Date:4/1/2015)... April 1, 2015   Medisafe ™, the leading ... across iOS and Android smartphones ... biofeedback into the platform to allow patients to track ... the first time, patients will be able to visualize ... impacts important biometrics, such as glucose levels and blood ...
(Date:3/24/2015)... , Mar. 24, 2015 Research and Markets ... the "Global Iris Recognition Market 2015-2019" report ... Global Iris Recognition market to grow at a CAGR ... This report covers the present scenario and the growth ... period 2015-2019. To calculate the market size, the report ...
(Date:3/23/2015)... March 23, 2015   HOYOS Labs , a ... today announced that the Company will demonstrate multiple biometrics-based ... and consumers at Connect:ID on March 23 through 25, ... Labs will highlight the IEEE Biometric Open Protocol Standard; ... and enterprise access control system. BOPS was invented by ...
Breaking Biology News(10 mins):Medisafe Announces Launch of Biometric Integration, Enabling Patients to Stay Adherent to Their Meds and See Tangible Health Results 2Global Iris Recognition Market 2015-2019 with 3M Cogent, Bioenable Technologies, Cross Match Technology, Iris ID Systems & Safran Dominating 2HOYOS Labs to Showcase Host of Biometrics Technologies at Connect:ID in Washington, D.C. 2HOYOS Labs to Showcase Host of Biometrics Technologies at Connect:ID in Washington, D.C. 3
... be the impact of the next green revolution on global ... climate change? To what extent can biofuels help make America ... be discussed at the International Annual Meetings of the American ... and Soil Science Society of America (SSSA), Oct. 31-Nov. 3 ...
... NY, October 28, 2010Mary Ann Liebert, Inc. announces the ... area of systems neuroscience, Brain Connectivity . This ... source of cutting-edge basic and clinical neuroscience research aimed ... the brain and how these connections are altered by ...
... by Lupus Research Institute-funded investigator Emily Baechler Gillespie, PhD, at ... clinical laboratory for development and could soon result in a ... to determine when a lupus flare is imminent. ... way to predict when a person with systemic lupus is ...
Cached Biology News:Media alert: Agronomists, crop and soil scientists to convene in Long Beach 2New Brain Connectivity journal captures latest advances in neuroscience research 2New clinical test to predict lupus flares moves closer to the market 2
(Date:4/1/2015)... , April 1, 2015  Spherix Incorporated (Nasdaq: ... to the fostering and monetization of intellectual property, ... privately held full service global investment bank specializing ... an industry note featuring Spherix. The ... a Senior Analyst at Chardan, was published on ...
(Date:4/1/2015)... , April 1, 2015 ... developing novel biological drugs to treat cancer, viral ... announce the appointment of Christina Coughlin ... responsible for providing medical and regulatory leadership to ... Dr. Coughlin has extensive experience in ...
(Date:3/31/2015)... Materials in Society Lecture Series ... 30 2015   Elsevier , a world-leading ... and publishing home of Materials Today , announced that ... Materials in Society  Lecture Series . The ... International Conference on Materials for Advanced Technologies (ICMAT) ...
(Date:3/31/2015)... SALT LAKE CITY , March 31, 2015 /PRNewswire-USNewswire/ ... second milestone with the selection of ten proposals ... The MCRI is the first patient-led, scientifically validated ... patients. Stage 2 of the MCRI ... "After careful review of a large number of ...
Breaking Biology Technology:Chardan Capital Issues Industry Note Covering Spherix 2Chardan Capital Issues Industry Note Covering Spherix 3Immunocore Appoints Dr. Christina Coughlin as Chief Medical Officer 2Immunocore Appoints Dr. Christina Coughlin as Chief Medical Officer 3Immunocore Appoints Dr. Christina Coughlin as Chief Medical Officer 4Elsevier Materials Science Council Introduces the Materials in Society Lecture Series at the International Conference on Materials for Advanced Technologies (ICMAT) 2Elsevier Materials Science Council Introduces the Materials in Society Lecture Series at the International Conference on Materials for Advanced Technologies (ICMAT) 3Myeloma Crowd Research Initiative Selects 10 High-Risk Multiple Myeloma Proposals For Further Review 2
... Ltd.,(SWX: ARPN) today announced that Dr Jurgen Raths will ... Raths commands extensive,knowledge in the commercialisation of drugs for ... built and lead the European,Critical Care sales, medical and ... At the Annual General Meeting of 7 May, ...
... ,Exelixis, Inc. (Nasdaq: EXEL ) announced today that ... Exelixis, will present at the,Morgan Stanley Global Healthcare Unplugged ... 30, 2008. Dr. Scangos will discuss updates to,the company,s ... be webcast and may be accessed in the Event,Calendar ...
... Inc. (Nasdaq: IDIX ) announced today that ... upcoming Morgan Stanley Global,Healthcare Unplugged Conference on Wednesday, ... Ritz Carlton in Key Biscayne, Florida., The ... can be,accessed under "Calendar of Events" in the ...
Cached Biology Technology:Leadership Change to Enable Arpida to Become a Fully Integrated Pharmaceutical Company 2Leadership Change to Enable Arpida to Become a Fully Integrated Pharmaceutical Company 3Leadership Change to Enable Arpida to Become a Fully Integrated Pharmaceutical Company 4
... (Intein Mediated Purification with an Affinity Chitin-binding ... engineered protein splicing elements (termed inteins) to ... column (1-4) (Figures 1 and 2). This ... systems by its ability to separate a ...
... Analysis Note: The kit contains all ... convenient determination of NADPH-cytochrome c reductase activity ... purified microsomes [endoplastic reticulum (ER)]. It has ... tissues such as liver, kidney, brain, spleen, ...
... provides the reagents to efficiently differentiate ... myotubes. By efficiently promoting myogenic differentiation, ... in studies examining myogenesis, transcription factor ... muscle cell replacement therapy. By providing ...
... CHEMICON's Cell Transformation Detection Assay is an ... is considered the most stringent assay for ... this assay, cells (pre-treated with carcinogens or ... in soft agar medium for 21-28 days. ...
Biology Products: