HOME >> BIOLOGY >> NEWS
Cuttlefish masters of disguise despite colorblindness

WOODS HOLE, MA--Cuttlefish are wizards of camouflage. Adept at blending in with their surroundings, cuttlefish are known to have a diverse range of body patterns and can switch between them almost instantaneously. New research from MBL Marine Resources scientists, to appear in the May 2006 issue of the journal Vision Research, confirms that while these masters of disguise change their appearance based on visual cues, they do so while being completely colorblind.

While previous research has reported cuttlefish colorblindness, MBL Research Associate Lydia Mthger and her colleagues in Roger Hanlon's laboratory approached the problem in more depth and with a new behavioral assay. The researchers tested cuttlefish (Sepia officinalis) color perception through observing the animal's behavioral response to a series of checkerboard patterned substrates of various colors and brightnesses.

They found that the animals did not respond to the checkerboard pattern when placed on substrates whose color intensities were matched to the Sepia visual system, suggesting that these checkerboards appeared to their eyes as uniform backgrounds. However, their results showed that cuttlefish were able to detect contrast differences of at least 15%, which Mthger and her colleagues suspect might be a critical factor in uncovering what determines camouflage patterning in cuttlefish.

Despite these results, the vexing question of how cuttlefish master the task of camouflage in low-contrast, color-rich environments such as those found at shallow depths of water, remains to be answered. Mthger and her colleagues are currently looking at cuttlefish contrast sensitivity in more detail. "Our result that cuttlefish are able to detect contrast differences of at least 15%, is only an upper limit," says Mthger. "It's certainly not the contrast threshold, which we would like to know. It seems that cuttlefish camouflage themselves by matching intensities of objects in the environment
'"/>

Contact: Gina Hebert
ghebert@mbl.edu
508-289-7725
Marine Biological Laboratory
18-Apr-2006


Page: 1 2

Related biology news :

1. New data reveal pregnancies exposed to accutane despite risk management program
2. Penn researchers report that gene therapy awakens the brain despite blindness from birth
3. Treatment disconnect in kidney cancer: Rising mortality despite more small tumors, more surgery
4. Creative economy grows despite large population growth of creative people
5. Chewing up a key regulator of fat synthesis keeps mice lean despite a high-fat diet
6. Rhinos clinging to survival in the heart of Borneo, despite poaching
7. Genetic testing still smart choice, despite uncertainties
8. Low-income pregnant Latinas drink despite universal alcohol-warning messages
9. NSAID drug protects against intestinal tumors in mice, despite poor diet and gene losses
10. Study by US, Hebrew University scientists sheds light on how bacteria persist despite antibiotics
11. Mice thrive despite massive genetic makeover

Post Your Comments:
*Name:
*Comment:
*Email:
TAG: Cuttlefish masters disguise despite colorblindness

(Date:6/24/2015)... 24, 2015 This report provides market analysis ... six years. It contains an analysis of the drivers, ... their impact from the short, medium, and long term ... industry, market, and technology trends that currently, prevail in ... concerned authorities to efficiently manage the increasing marine traffic ...
(Date:6/23/2015)... June 23, 2015   MedNet Solutions , ... the entire spectrum of clinical research, is pleased ... ™ , the company,s intuitive, flexible and affordable ... Silver 2015 Stevie® Award by the American ... Services Website category.  The American Business Awards are ...
(Date:6/18/2015)... 18, 2015 This report analyzes the worldwide ... following Product Segments, which includes Immunoassay Analyzers and Reagents: ... Radio Immunoassay Systems, and Nephelometric Immunoassay Systems. The report ... Canada , Japan , ... Latin America , and Rest of ...
Breaking Biology News(10 mins):Automatic Identification System Market by Class, by Platform, by Application and by Geography - Global Forecasts & Analysis to 2014 - 2020 2MedNet Solutions' iMedNet eClinical Wins Silver Stevie Award 2Global Immunoassay Systems Market 2Global Immunoassay Systems Market 3Global Immunoassay Systems Market 4Global Immunoassay Systems Market 5Global Immunoassay Systems Market 6Global Immunoassay Systems Market 7Global Immunoassay Systems Market 8Global Immunoassay Systems Market 9Global Immunoassay Systems Market 10Global Immunoassay Systems Market 11Global Immunoassay Systems Market 12Global Immunoassay Systems Market 13Global Immunoassay Systems Market 14Global Immunoassay Systems Market 15Global Immunoassay Systems Market 16Global Immunoassay Systems Market 17Global Immunoassay Systems Market 18Global Immunoassay Systems Market 19Global Immunoassay Systems Market 20Global Immunoassay Systems Market 21Global Immunoassay Systems Market 22Global Immunoassay Systems Market 23Global Immunoassay Systems Market 24Global Immunoassay Systems Market 25Global Immunoassay Systems Market 26Global Immunoassay Systems Market 27Global Immunoassay Systems Market 28Global Immunoassay Systems Market 29
(Date:6/30/2015)... ... June 30, 2015 , ... Southern Illinois University Edwardsville Chancellor ... vice president of instruction at Chippewa Valley Technical College (CVTC) and will assume ... to lead SIUE during the past three years,” Furst-Bowe said. “I want to ...
(Date:6/29/2015)... ... June 30, 2015 , ... This cutting edge standard ... machines. Featuring 12 distinct peaks, the WAV-8 is the world’s first cuvette-shaped, solid-state ... spec deep into the NIR range. Previous spectrophotometer calibration standards, such as those made ...
(Date:6/29/2015)... ... , ... The global microfluidics market is expected to grow ... 2020). The market is mainly driven by the rising geriatric population, growing Asian ... of adequate healthcare and research infrastructure in emerging markets, dearth of skilled professionals ...
(Date:6/29/2015)...  MiMedx Group, Inc. (NASDAQ: MDXG ), the ... patent-protected processes to develop and market advanced products and ... Medicine, Ophthalmic and Dental sectors of healthcare, announced that ... been awarded the Lifetime Achievement Award in the EY ... The Entrepreneur Of The Year Program, now in ...
Breaking Biology Technology:SIUE’s Furst-Bowe Accepts VP of Instruction at CVTC 2SIUE’s Furst-Bowe Accepts VP of Instruction at CVTC 3FireflySci Releases Spectrophotometer Calibration Standards for NIR Wavelength Accuracy Verification 2FireflySci Releases Spectrophotometer Calibration Standards for NIR Wavelength Accuracy Verification 3Microfluidics Market Growing at 19.3% CAGR To 2020 – New research available at ReportsnReports.com 2Microfluidics Market Growing at 19.3% CAGR To 2020 – New research available at ReportsnReports.com 3Microfluidics Market Growing at 19.3% CAGR To 2020 – New research available at ReportsnReports.com 4Microfluidics Market Growing at 19.3% CAGR To 2020 – New research available at ReportsnReports.com 5EY Entrepreneur Of The Year Program Recognizes Pete Petit, The Chairman & CEO of MiMedx 2
Cached News: