Navigation Links
Behavioral studies show UV contributes to marsupial color vision

Work reported this week provides new evidence that marsupials, like primates, have functional color vision based on three different types of color photoreceptor cones--but unlike primates, a component of marsupial color vision includes sensitivity to ultraviolet wavelengths.

In the study, researchers employed behavioral tests to show that at least one type of marsupial uses its detection of UV light as part of its ability to discriminate between colors. The new work is reported by a group including Dr. Catherine Arrese of the University of Western Australia and appears in the March 21st issue of Current Biology.

The most prevalent system of color vision in mammals is known as dichromacy, which is a color-detection system based on two types of cone photoreceptors--those sensitive to short (SWS) and medium-to-long (M/LWS) wavelengths. Trichromacy, which is used by humans, was thought to be unique to primates that have re-evolved a third cone type from the duplication of the MWS/LWS gene, which enables the discrimination of green-red colors. But the researchers' previous physiological studies in Australian marsupials provided original evidence for the potential of trichromatic color vision in mammals other than primates. The findings were consistent in several distantly related marsupial species, indicating that the presence of three spectrally distinct cone types, sensitive to short (SWS), medium (MWS), and long (LWS) wavelengths, is a common feature of Australian marsupials. However, since evidence of color vision cannot be derived from physiological studies alone, marsupial trichromacy remained to be established with an unequivocal behavioural approach.

In the new study, the researchers therefore investigated the contribution of the distinct cone types to color vision in the fat-tailed dunnart (Sminthopsis crassicaudata), using additive color mixture experiments in which choice between a colored light (training wavelength) and an additive mi
'"/>

Source:Cell Press


Page: 1 2

Related biology news :

1. New studies suggest airborne SARS transmission is possible
2. Two studies document rise of superbugs in the environment
3. UI researcher studies deafness in fruit flies, humans
4. Biased reporting found in cancer prognostic studies
5. Fruit fly studies open new window on cancer research
6. Why do aneurysms form? New studies suggest leading role for white blood cells
7. Bare metal stents deliver gene therapy to heart vessels with less inflammation in animal studies
8. Diabetes researchers pioneer islet cell xenotransplantation in primate studies
9. Pair of studies offer new clues to combat antibiotic resistance
10. New RNAi tools enable systematic studies of gene function
11. Ernst Mayrs theory illustrated in genetic epidemiology studies
Post Your Comments:
*Name:
*Comment:
*Email:
TAG: Behavioral studies show contributes marsupial color vision

(Date:11/11/2014)... -- Forensicon, Inc., a Chicago -based digital ... promotion of Yaniv Schiff from Senior Computer ... new role as Director, he will lead company efforts ... and provide leadership within the company,s digital forensics practice ... Schiff joined Forensicon in 2006 and ...
(Date:11/7/2014)... -- In conjunction with the Glendale and ... of the Verdugos has announced the " GLENDALE ... initiative to keep the Verdugo Regional Crime Lab operational after ... of existence, the Lab has processed more than 400 DNA ... "Because our number one priority is the wellbeing ...
(Date:11/6/2014)... cancer deaths occur because of metastasis, yet progress ... been slow. , "It,s been particularly challenging to ... Gujral, research fellow in systems biology at Harvard ... detected until after they,ve already metastasized." , Gujral ... that should help researchers better understand how metastasis ...
Breaking Biology News(10 mins):Yaniv Schiff Promoted to Director of Digital Forensics at Forensicon, Inc. 2Community Foundation Of The Verdugos Unveils Campaign To Fund Glendale-Burbank DNA Justice Project 2Migration negation 2Migration negation 3
... of cell and developmental biology, has been awarded one ... Awards, one of the NIH,s most prestigious grants. ... address a significant medical science challenge: identifying the full ... and disease processes such as cancer. Major, a ...
... professors have been named 2010 fellows of the American ... and Interdisciplinary Studies (CBIS) and the Howard P. Isermann ... and Professor Emeritus of Chemistry Leonard Interrante were both ... and contributions to the science, the profession, and service ...
... parts of the world have brought into sharp focus new ... of rivers during periods of high flow. Using an ... how the flow of river water affects the movement of ... changes in the bed of an artificial water channel to ...
Cached Biology News:UNC scientist receives NIH director's New Innovator Award 2Rensselaer professors Dordick and Interrante named ACS Fellows 2What lies beneath: Study examines sediment movement during floods in rivers 2What lies beneath: Study examines sediment movement during floods in rivers 3
(Date:11/24/2014)... Nov. 24, 2014  Last week, Representatives ... (D-NC) took a bold bipartisan step on ... the OPEN Act. Original co-sponsors of the legislation ... Act will incentivize drug makers and innovators to ... and pediatric cancers, which opens the door to ...
(Date:11/24/2014)... 2014 Continental Clinical Solutions, LLC ... clinical trials at its mid-Atlantic late-phase research facility, ... created with the idea of closing patient disparities ... in medical advances," said Continental's CEO, Saleh ... the immortal cell line of Henrietta Lacks, dubious ...
(Date:11/23/2014)... Apiscent Labs, a privately held ... ingredients to the global pharmaceutical and flavor & ... website, Apiscent.com. , The Apiscent.com homepage welcomes visitors ... easy navigation, rotating images and content focused on ... , The company’s work in Pharmaceutical ...
(Date:11/22/2014)... MD (PRWEB) November 21, 2014 ... management solutions provider, has released Limfinity® version 5.1.4. ... installation projects of Limfinity® than ever in RURO’s ... configuration and minority framework enhancement. Limfinity® version 5.1.4 ... far above and beyond bug fixes! , Limfinity® ...
Breaking Biology Technology:OPEN Act Introduced to Repurpose Drugs for Rare Diseases 2At Continental Clinical Solutions, CEO Saleh Stevens Focuses on Diversity in Clinical Trial Recruitment at Maryland Site 2At Continental Clinical Solutions, CEO Saleh Stevens Focuses on Diversity in Clinical Trial Recruitment at Maryland Site 3RURO Announces Limfinity® version 5.1.4 2
... even the resources of the world,s largest industrialized nations, scientists ... to find solutions. , Mark Shannon of the University of ... water resource research to address this crisis in a review ... "As dire as the growing problems are with a lack ...
... Blacksburg, Va. -- The ubiquity of mineral nanoparticles in ... intriguing properties provide Earth scientists with another dimension in ... team of scientists from seven universities in a review ... Nanominerals, Mineral Nanoparticles, and Earth Chemistry. , The way ...
... March 20 Scientists at the,Bio-Communications Research ... for,the Improvement of Human Functioning International (CIHFI), ... about its recent stem cell,discovery. The scientific ... stem cell population" received BioMed Central,s,Research Article ...
Cached Biology Technology:Countering an approaching water crisis 2Nanoscience will change the way we think about the world 2Nanoscience will change the way we think about the world 3Nanoscience will change the way we think about the world 4Nanoscience will change the way we think about the world 5Medical Research Award Goes to Adult Stem Cell Scientists at a Kansas Not-for-Profit Organization 2
The F40 piston assembly is supplied as two assemblies to service one F40 pump of a BioLogic DuoFlow workstation....
Mouse monoclonal antibody raised against a full length recombinant ATF3. NCBI Entrez Gene ID = ATF3...
... is used as an internal standard for ... dilution mass spectrometry. 5-OxoETE is a polyunsaturated ... 5-HETE in human neutrophils. It stimulates cytosolic ... of 2 nM. 5-OxoETE selectively stimulates the ...
BD BioCoat Osteologic Coverslips that have been sterilized by ETO gas. Coating : Osteologic&trade ,Thickness : 0.16 mm ,Diameter : 12.7 mm ,Gridded : No ...
Biology Products: