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:10/15/2014)... the 44th Rosenstiel Award for Distinguished Work in Biomedical ... the mechanisms of genomic instability and its implications for ... second alumnus to win the Rosenstiel Award; the first, ... Alt is the Charles A. Janeway Professor of Pediatrics ... an investigator at the Howard Hughes Medical Institute at ...
(Date:10/14/2014)... – Scientists have sequenced the house fly genome for ... might expect from an insect that thrives in pathogen-rich ... Oct. 14 in the journal Genome Biology , ... and of how flies quickly adapt to resist insecticides, ... house flies (Musca domestica) carry and transmit more than ...
(Date:10/14/2014)... of scientists led by researchers at the University ... of Miami Miller School of Medicine (UMMSM) have ... underlying bipolar (manic depressive) disorder, a breakthrough that ... affective disorder, as well as depression and other ... online this week in Nature Molecular Psychiatry ...
Breaking Biology News(10 mins):Brandeis awards 44th Rosenstiel Award to pioneering geneticist Fred Alt 2House fly genome reveals expanded immune system 2Rare genetic disease protects against bipolar disorder 2Rare genetic disease protects against bipolar disorder 3
... involved in many forms of leukemia and lymphoma is ... our genes by affecting whole swaths of chromosomes in ... issue of Nature Genetics and appearing online August 6. ... known as JAK/STAT focused on complex questions involving the ...
... Somerville of the Carnegie Institution and Stanford University, explained ... and achievable to reduce costs and multiply current levels ... Somerville presented his talk, "Bioenergy: The 21st Century Challenge ... American Society of Plant Biologists (ASPB) today (4:30 p.m. ...
... is a particular place inside a cell where they carry ... from the Charité Berlin, the University of Heidelberg, and the ... been able to visualize the structure of a "molecular machine" ... analysis. , This "machine" is made up of a ...
Cached Biology News:Loosen up, DNA: Leukemia gene changes genetic packaging 2Loosen up, DNA: Leukemia gene changes genetic packaging 3Loosen up, DNA: Leukemia gene changes genetic packaging 4Scientific issues associated with carbon-neutral energy sources such as cellulosic ethanol 2The molecular post office inside the cell 2
(Date:10/20/2014)... , A major pan-European survey ... delivery of care has revealed changing trends in many ... the provision of healthcare services across the continent. The ... European Gastroenterology (UEG), have been announced today and led ... the burden of GI disorders across Europe ...
(Date:10/20/2014)... PLAINSBORO, N.J. (PRWEB) October 20, 2014 ... that the Sidney Kimmel Cancer Center at Thomas ... program. , Through the Strategic Alliance Partnership ... and OncLive will collaborate to raise awareness of ... cancer treatment, and other projects. Clinicians and other ...
(Date:10/19/2014)... The Latin American hardware encryption display market ... with analysis and forecast of revenue. This market was ... to reach $2,366.8 million by 2018, at a CAGR ... the TOC of the Latin American hardware encryption market ... provided. It also provides a glimpse of the segmentation ...
(Date:10/19/2014)... October 19, 2014 The Asia-Pacific ... market in Asia-Pacific with analysis and forecast of ... Asia Pacific Bromine Market report, to get an ... provides a glimpse of the segmentation in the ... tables and figures. , http://www.micromarketmonitor.com/market/asia-pacific-bromine-6741503144.html ...
Breaking Biology Technology:Major Survey Reveals Changing Trends and Inequalities in Healthcare Provision for Gastrointestinal Disorders Across Europe 2Major Survey Reveals Changing Trends and Inequalities in Healthcare Provision for Gastrointestinal Disorders Across Europe 3Major Survey Reveals Changing Trends and Inequalities in Healthcare Provision for Gastrointestinal Disorders Across Europe 4Major Survey Reveals Changing Trends and Inequalities in Healthcare Provision for Gastrointestinal Disorders Across Europe 5Sidney Kimmel Cancer Center at Thomas Jefferson University Partners With OncLive 2Sidney Kimmel Cancer Center at Thomas Jefferson University Partners With OncLive 3The Latin American hardware encryption display market is expected to reach $2,366.8 million by 2018 - New Report by MicroMarket Monitor 2The Latin American hardware encryption display market is expected to reach $2,366.8 million by 2018 - New Report by MicroMarket Monitor 3The Asia-Pacific Bromine Market is estimated to grow to $4,080.1 million by 2018 - New Report by MicroMarket Monitor 2The Asia-Pacific Bromine Market is estimated to grow to $4,080.1 million by 2018 - New Report by MicroMarket Monitor 3
... BEIJING, Sept. 8 /PRNewswire-Asia/ -- Sinovac Biotech Ltd.,(NYSE Amex: ... China, today announced,that the first lot of PANFLU.1, its H1N1 ... for the Control of Pharmaceutical and,Biological Products and obtained the ... vaccines are ready for delivery. , ...
... SANTA CLARA, Calif., Sept. 8 Cell Biosciences, ... announced that they have entered into a definitive agreement providing ... $1.50 per share or approximately $17.9 million in cash. This ... include a global infrastructure and a broad protein analysis product ...
... LAIYANG, China, Sept. 8 /PRNewswire-Asia-FirstCall/ -- Jiangbo,Pharmaceuticals, Inc. (OTC ... with its principal operations in the People,s,Republic of China, ... The Company expects to meet or exceed its ... income of $40 to $43 million for the,fiscal year ...
Cached Biology Technology:Sinovac Obtains Lot Release Certificate for Its First Batch of H1N1 Vaccine 2Cell Biosciences Signs Agreement to Acquire Alpha Innotech 2Cell Biosciences Signs Agreement to Acquire Alpha Innotech 3Cell Biosciences Signs Agreement to Acquire Alpha Innotech 4Cell Biosciences Signs Agreement to Acquire Alpha Innotech 5Jiangbo Pharmaceuticals Reaffirms Guidance for Fiscal 2009 2
... is a 16 amino acid (amino acids 3-18) synthetic peptide ... The sequence of this peptide is (amino to carboxy terminus): ... V - K - L - R - A - ... K(18). This peptide may be used for neutralization ...
... standard microarray image analysis software because of ... tools, visualizations, automation capabilities, performance and ease ... every GenePix scanner, and it also imports ... types of arrays. A wide range of ...
... Package Superior Protein Detection and Quantitation ... 2D Proteomic Imaging System is a highly ... general life science research applications. ProXPRESS 2D ... all dyes in the UV and VIS ...
... Description: ,Kit containing Dermal Fibroblasts ... containing 20% FBS and 10% DMSO at ... mL) of optimized medium.This cell culture is ... guaranteed to provide an additional 6 months ...
Biology Products: