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

During his time in Daniel Morse's lab at the University of California Santa Barbara, USA, PhD student Daniel DeMartini has seen many Doryteuthis opalescens squid pass through the lab's doors. These squid provide DeMartini with a steady supply of the iridocyte cells that are responsible for the squid's shimmering opal-like markings. Iridocytes are found in many cephalopods, but what makes those of D. opalescens so special is their ability to adapt and produce a rainbow of different colours from the same cell. Most iridocytes are found in patches across the squid's body but DeMartini recalls: 'We started to notice that some squid had bright iridescent rainbow stripes underneath their fins. Sometimes most of the squid in a batch would have them, sometimes none. After a while we started to realise the rainbow stripes were only seen in the females.' So after a few years of observing this, DeMartini decided to investigate this female-only trait further, publishing his results in The Journal of Experimental Biology http://jeb.biologists.org/content/216/19/3733.abstract.

Upon the squid's arrival in the lab, DeMartini noted that on average, only half the females displayed colourful stripes, yet all were capable of producing them, as an hour after death all females had these vibrant markings adorning their bodies. When DeMartini examined the underlying tissue under a microscope he found it was full of iridocytes jam packed with layer upon layer of reflectins (the proteins responsible for reflecting the light as colour). The sheer number of iridocytes each packed with a high number of reflectin layers results in stripes that are six times brighter than other patches of iridocytes.

Sandwiched between the two colourful stripes, DeMartini also noticed a large bright white area whose appearance coincided with the emergence of the iridescent streaks. When he delved a l
'/>"/>

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:4/10/2015)... DUBLIN , April 10, 2015 ... the addition of the "Security Competitive Profiles - ... (Logo: http://photos.prnewswire.com/prnh/20130307/600769) , NEC will continue to ... solutions to the market, with a company focus on ... solution anticipated. Winning opportunities in the ...
(Date:4/2/2015)... BETHESDA, Md. , April 2, 2015 ... Salt Lake City , the American ... election of five new directors to its Board.  Members ... for the ACMG and for forming and advancing its ... the medical genetics profession. "It,s an eventful ...
(Date:3/31/2015)... YORK , March 31, 2015  Elephant Talk ... "Company"), a global provider of Software Defined Network Architecture ... today announced total revenue of approximately $20.4 million for ... a restated $19.5 million for the year ended December ... calendar 2014, the Company had completed its multi-year transition ...
Breaking Biology News(10 mins):NEC Security Competitive Profile 2015 2American College of Medical Genetics and Genomics Announces New Board Members: Dr. Louanne Hudgins is ACMG President-Elect 2American College of Medical Genetics and Genomics Announces New Board Members: Dr. Louanne Hudgins is ACMG President-Elect 3American College of Medical Genetics and Genomics Announces New Board Members: Dr. Louanne Hudgins is ACMG President-Elect 4American College of Medical Genetics and Genomics Announces New Board Members: Dr. Louanne Hudgins is ACMG President-Elect 5American College of Medical Genetics and Genomics Announces New Board Members: Dr. Louanne Hudgins is ACMG President-Elect 6American College of Medical Genetics and Genomics Announces New Board Members: Dr. Louanne Hudgins is ACMG President-Elect 7American College of Medical Genetics and Genomics Announces New Board Members: Dr. Louanne Hudgins is ACMG President-Elect 8Elephant 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
... at the Salk Institute for Biological Studies and Iowa ... play a role in the production of seed oils, ... and biofuels. Scoring a rare scientific hat trick, ... cress plants ( Arabidopsis thaliana ) that regulate the ...
... Milk poured down Britain,s kitchen sinks each year creates a ... shows. Scientists say the 360,000 tonnes of milk wasted ... to 100,000 tonnes of CO2. The study by the University ... by about 20,000 cars annually. The research identifies ...
... This release is also available in Chinese ... team led by Virginia Tech Associate Professor Boris Vinatzer and ... used the latest DNA sequencing technology to trace a devastating ... Pseudomonas syringae pv. actinidiae ( Psa ) has ...
Cached Biology News:Discovery of plant proteins may boost agricultural yields and biofuel production 2Discovery of plant proteins may boost agricultural yields and biofuel production 3Wasted milk is a real drain on our resources, study shows 2Virginia Tech and University of Tuscia lead team to unravel origin of devastating kiwifruit bacterium 2Virginia Tech and University of Tuscia lead team to unravel origin of devastating kiwifruit bacterium 3
(Date:4/17/2015)... 17, 2015 BellBrook Labs announced ... support for the powerful Orthogonal Pooled Screening (OPS) ... Center at the Lankenau Institute for Medical Research ... to measurably improve successful drug discovery outcomes using ... rare, drug-like libraries available nowhere else, coupled to ...
(Date:4/16/2015)... 16, 2015 Capillus, LLC announces ... physician network in Europe and Asia. The Miami-based ... Fernando Bermúdez, former Business Development Director of Svenson ... veteran, Mr. Bermúdez’s professional achievements include increasing the ... while also penetrating the Portuguese marketplace with centers ...
(Date:4/16/2015)... 16, 2015 OncoTAb, Inc., ... (UNC Charlotte) spin-out company, announced today the appointment ... M.D., as Chief Operating Officer (COO). Cooper brings ... in developing clinical diagnostic and biotechnology platforms in ... , Cooper’s extensive career transcends the field of ...
(Date:4/16/2015)... /CNW/ - Bioenterprise Corporation is pleased to announce that it ... Charlottetown , PEI.  Bioenterprise has established a 3-year ... for the commercialization of agricultural technologies and innovations. ... ADAPT.  They have been at the heart of agri-innovation ... Dave Smardon , President & CEO of Bioenterprise ...
Breaking Biology Technology:BellBrook Labs and Lankenau Institute Partner to Accelerate Drug Discovery using Orthogonal Pooled Screening 2Capillus, LLC Extends Laser Hair Therapy Products to Europe and Asia 2OncoTAb Names Dr. David L. Cooper as COO 2Bioenterprise Corporation Expands into the Maritimes 2
... Technical Specifications , Accelerating Your Research with the ... , . , ... The new BD High Throughput Sampler (HTS) provides fully automated and rapid sample ... with sample carryover tolerances of 1% or less. The BD HTS adapts ...
... Girpa, Angers, France , C. ... Introduction , Phenoxy ... to be detected at trace level to ensure a safe drinking water and ... Among the analytical methods developed, LC/UV exhibits ...
... Beck and C. Schmidt, Varian, Inc. , ... Marijuana is one of the most commonly used illegal recreational drugs in ... is tetrahydrocannabinol or THC. Toxicology, forensic, and clinical labs are often asked ... of THC, most frequently the carboxy form. , ...
Cached Biology Technology:Technical Specifications, Accelerating Your Research with the BD FACSCanto, High Throughput Sampler Option 2Technical Specifications, Accelerating Your Research with the BD FACSCanto, High Throughput Sampler Option 3Fast Analysis of Phenoxyacetic and Phenoxypropionic Herbicides in Vegetable Matrix by Negative Ion Electrospray LC/MS/MS 2Fast Analysis of Phenoxyacetic and Phenoxypropionic Herbicides in Vegetable Matrix by Negative Ion Electrospray LC/MS/MS 3Analysis of ()-11-Nor-9-Carboxy-Delta-9-THC in Urine by Negative Ion Electrospray LC/MS/MS 2Analysis of ()-11-Nor-9-Carboxy-Delta-9-THC in Urine by Negative Ion Electrospray LC/MS/MS 3
WIF-1 (N-20)...
Mouse monoclonal [1.T.4] to WAVE 1 ( Abpromise for all tested applications). Antigen: His6 fusion protein corresponding to full-length rat WAVE1. Entrez Gene ID: 8936...
IgG2b, k APC clone A95-1, Isotype Rat IgG2b, kappa, 0.1 mg ....
...
Biology Products: