Navigation Links
Is that a testes or an iridescent stripe? A female squid's male-like true colors
Date:9/5/2013

ittle deeper he found the underlying tissue was made up of leucophore cells. Like iridocytes, leucophores contain reflectin proteins, but instead of being arranged into layers, these light-reflecting proteins are packaged into rounded compartments throughout the cell. This alternative arrangement scatters light of all wavelengths, instead of reflecting just a single wavelength as colour, making the skin look white.

While leucophores are widespread in cephalopods, this is the first time switchable leucophores have been identified in D. opalescens squid. What's more, these leucophores are predominantly made up of reflectin subtypes that have only ever been found in adaptive iridocytes before. In iridocytes, these adaptive reflectins contract and change their refractive properties in response to the neurotransmitter acetylcholine, allowing them to fine-tune colour of the reflected light. But are they also adaptive in a leucophores? Sure enough, when DeMartini treated the female squid with acetylcholine the white region became brighter. 'This discovery reveals a fundamental relationship between the switchable leucophores and the tunable colour-producing iridocytes, suggesting they share a mechanism at the molecular level', says DeMartini.

So what is the purpose of these markings in females? In short, DeMartini doesn't know, but he points out that the white stripe looks remarkably similar to the white testes seen in male squid. He speculates that the iridescent stripes might give a 3D perspective to the white strip: 'You could orient the iridocyte's reflection at some specific angle so it'll look brighter from certain positions, instead of white scattering which is always going to be uniformly bright in all directions.' As male squid are notoriously aggressive towards females, DeMartini suspects that these adaptable iridocytes and leucophores could help females mimic males to escape unwanted attention.


'/>"/>

Contact: Nicola Stead
nicola.stead@biologists.com
44-012-234-25525
The Company of Biologists
Source:Eurekalert

Page: 1 2

Related biology news :

1. Female frogs prefer males who can multitask
2. Perception of fertility affects quality of life in young, female cancer survivors
3. Sex chromosome shocker: The female X a key contributor to sperm production
4. Research reveals low exposure of excellent work by female scientists
5. HIV prevention among female sex workers in India reduces HIV and syphilis
6. Females fend off gut diseases
7. Women reject sexually promiscuous peers when making female friends
8. Environmental change impacts on migratory shorebirds differ for males and females
9. West Nile virus passes from female to eggs, but less so from larvae to adults
10. Female deer take control during the mating season
11. Female mice exposed to BPA by mothers show unexpected characteristics
Post Your Comments:
*Name:
*Comment:
*Email:
(Date:4/1/2015)... Conn. , Apr. 1, 2015  NXT-ID, Inc. ... biometric authentication company focused on the growing mobile commerce ... of Wocket smart wallets is underway to early access ... access group includes usage at retail outlets including Walmart, ... Pharmacy. Users report Wocket was accepted at all outlets ...
(Date:4/1/2015)... , April 1, 2015   Medisafe ™, ... million users across iOS and Android ... begun integrating biofeedback into the platform to allow patients ... outcomes. For the first time, patients will be able ... a dose impacts important biometrics, such as glucose levels ...
(Date:3/31/2015)... , March 31, 2015  Elephant Talk Communications ... a global provider of Software Defined Network Architecture (ET ... announced total revenue of approximately $20.4 million for the ... restated $19.5 million for the year ended December 31, ... 2014, the Company had completed its multi-year transition away ...
Breaking Biology News(10 mins):NXT-ID Reports Second Shipment of Wocket Smart Wallets Underway to Early Access Pre-order Customers and Provides User Feedback 2NXT-ID Reports Second Shipment of Wocket Smart Wallets Underway to Early Access Pre-order Customers and Provides User Feedback 3NXT-ID Reports Second Shipment of Wocket Smart Wallets Underway to Early Access Pre-order Customers and Provides User Feedback 4Medisafe Announces Launch of Biometric Integration, Enabling Patients to Stay Adherent to Their Meds and See Tangible Health Results 2Elephant Talk Reports 2014 Fourth Quarter and Year End Financial Results 2Elephant Talk Reports 2014 Fourth Quarter and Year End Financial Results 3Elephant Talk Reports 2014 Fourth Quarter and Year End Financial Results 4Elephant Talk Reports 2014 Fourth Quarter and Year End Financial Results 5Elephant Talk Reports 2014 Fourth Quarter and Year End Financial Results 6
... have been selected for awards from the Merck/AAAS ... Institute for Science Education (MISE) and the American ... program awards provide up to $60,000, paid over ... chemistry departments at the recipient institution. This ...
... SALT LAKE CITYUnraveling the genetics of social behavior and ... the Salk Institute for Biological Studies have traced the ... genetic disorder known as Williams Syndrome. Their ... of the American Journal of Medical Genetics , ...
... The genome of the evolutionary ancestor of humans and present-day ... DNA, according to a study to be published in ... birthday. "The new study shows big differences in ... containing rapidly evolving genes. Most of these differences occurred at ...
Cached Biology News:2 genes influence social behavior, visual-spatial performance in people with Williams syndrome 22 genes influence social behavior, visual-spatial performance in people with Williams syndrome 3Ancestral genome of present-day African great apes & humans had burst of DNA sequence duplication 2
(Date:4/1/2015)... (PRWEB) April 01, 2015 “Science can be ... and fifth-graders participated in an “Introduce a Girl to Engineering ... February. Lessons in light-based science and technology were presented by ... Student Chapters awarded a total of $60,000 in International ... international society for optics and photonics . The IYL grants ...
(Date:4/1/2015)... SEATTLE , April 1, 2015  Adaptive ... The Lancet Oncology showing ... the company,s next-generation sequencing-based minimal residual disease (MRD) ... clonoSEQ™ MRD test) accurately identifies patients with diffuse ... of relapse after initial treatment, usually several months ...
(Date:4/1/2015)... City, UT (PRWEB) April 01, 2015 ... agreement allowing Biosearch to make, use, market and ... agreement also licenses CoPrimers™ technology to Biosearch for ... patent-pending design greatly reduces the occurrence of primer-dimers, ... resulting in increased sensitivity and lower test prices. ...
(Date:4/1/2015)... Shimadzu Corporation announced that its ... system (Nexera UC) received the Pittcon Editors’ Gold ... Chemistry and Applied Spectroscopy (Pittcon) held in New ... , The Pittcon Editors’ Awards recognize the most ... time based on votes by the media corps. ...
Breaking Biology Technology:Fun, wonder, importance of light are messages in SPIE Student Chapter IYL2015 events 2Fun, wonder, importance of light are messages in SPIE Student Chapter IYL2015 events 3Adaptive Biotechnologies' clonoSEQ Minimal Residual Disease Test Predicts Relapse in Diffuse Large B-Cell Lymphoma Patients by Sensitively Detecting Circulating Tumor DNA 2Adaptive Biotechnologies' clonoSEQ Minimal Residual Disease Test Predicts Relapse in Diffuse Large B-Cell Lymphoma Patients by Sensitively Detecting Circulating Tumor DNA 3Adaptive Biotechnologies' clonoSEQ Minimal Residual Disease Test Predicts Relapse in Diffuse Large B-Cell Lymphoma Patients by Sensitively Detecting Circulating Tumor DNA 4Adaptive Biotechnologies' clonoSEQ Minimal Residual Disease Test Predicts Relapse in Diffuse Large B-Cell Lymphoma Patients by Sensitively Detecting Circulating Tumor DNA 5Biosearch and Co-Diagnostics Sign Cooperative Primers Agreement 2Biosearch and Co-Diagnostics Sign Cooperative Primers Agreement 3Shimadzu Nexera UC Recognized at Pittcon 2015 with Editors’ Gold Award 2
... ... ... 27, 2009 -- Global food security, which is increasingly being recognized as a key ... private partnerships, William S. Niebur , vice president – DuPont Crop Genetics Research ...
... Organovo, Inc., a regenerative medicine company focused on bioprinting ... M.B.A, to its board of directors. Baltera is the ... and has over 19 years of pharmaceutical and biotechnology ... of the life sciences industry will provide great value ...
... /PRNewswire-Asia/ -- Sinovac Biotech Ltd. (NYSE: SVA ), ... that,it has received its third purchase order for its ... Technology for the national,stockpiling plan. Under this purchase order, ... of PANFLU.1 (15ug/0.5ml) for the Chinese central,government. Out of ...
Cached Biology Technology:Public-Private Partnerships Key to Achieving Global Food Security, Says DuPont Leader 2Public-Private Partnerships Key to Achieving Global Food Security, Says DuPont Leader 3Organovo Appoints Robert Baltera to Board 2Sinovac Obtains Third H1N1 Vaccine Order from Chinese Central Government 2Sinovac Obtains Third H1N1 Vaccine Order from Chinese Central Government 3
Guanylate Kinase Purified Anti-Mouse, Anti-Rat clone 28, Isotype Mouse IgG 1 , 50 µg Consult technical datasheet for details....
...
Proliferin (C-14)...
... submarine gel systems used gasketed gel trays. Turn the ... tank. Turn it back and run the gel - ... Turn & Cast tray is UV transparent. Each tray ... the tray and one in the center. This allows ...
Biology Products: