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:6/23/2015)... , June 23, 2015  Crossmatch™, ... and authentication solutions, today announced enhanced functionality of ... authentication solution.  The enhancements build on the ... the DigitalPersona Altus platform and provide expanded ... In today,s environment of increasing ...
(Date:6/17/2015)... Germany , June 17, 2015 ... Standard: QIA) today launched new Investigator ® STR assay ... the United States . The new genetic ... key genomic markers (short tandem repeats or STRs) for DNA ... evaluate the quality of DNA in each sample, a novel ...
(Date:6/16/2015)... 16, 2015  With the increasing number and severity ... top concern. The recent compromise of Federal employee ... strong authentication within government agencies. HYPR Corp. ... password (OTP) authenticator, has been submitted for testing and ... 3 validation for tamper proofing. The ...
Breaking Biology News(10 mins):Crossmatch Releases Enhanced DigitalPersona Altus Advanced Authentication Functionality 2QIAGEN Launches New Genetic Fingerprinting Kits for U.S. Forensic Labs 2QIAGEN Launches New Genetic Fingerprinting Kits for U.S. Forensic Labs 3QIAGEN Launches New Genetic Fingerprinting Kits for U.S. Forensic Labs 4QIAGEN Launches New Genetic Fingerprinting Kits for U.S. Forensic Labs 5Government Ready Biometric Security Approaching as HYPR Corp. Files FIPS 140-2 Level 3 Validation for Its Proprietary Biometric Token 2Government Ready Biometric Security Approaching as HYPR Corp. Files FIPS 140-2 Level 3 Validation for Its Proprietary Biometric Token 3
... 24, 2010 The National Science Foundation this week ... American Society for Biochemistry and Molecular Biology to establish ... nation. The initiative aims to improve undergraduate-level teaching ... and skills for the discipline and by developing appropriate ...
... MADISON, WI, June, 2010 The approach the ... gas emissions from agricultural anaerobic lagoons that treat manure ... to 65%, according to scientists from the University of ... feeding operations prior to application to crops as a ...
... the earth,s atmospheric composition are likely to alter plant ... reach levels double those of the preindustrial era by ... food for a rapidly growing population. University ... carbon dioxide, elevated ozone and higher atmospheric temperatures on ...
Cached Biology News:NSF grant will develop new online hub for biochemistry, molecular biology educators 2Scientists question EPA estimates of greenhouse gas emissions 2Climate change complicates plant diseases of the future 2Climate change complicates plant diseases of the future 3
(Date:6/29/2015)... ... June 29, 2015 , ... MediVet ... terms of the agreement, MediVet will acquire the rights to a portfolio of ... currently in pre-clinical development as a potential next-generation treatment for various musculoskeletal and ...
(Date:6/29/2015)... 29, 2015  AACC, a global scientific and ... laboratory medicine, is pleased to announce that the ... , has increased to 7.9 in the 2014 ... Clinical Chemistry in the top 3% ... influence of the research it publishes on laboratory ...
(Date:6/29/2015)... According to a new market research report "Aptamers ... R&D), by Technology (SELEX, Other Technologies), by End Users (Academic ... to 2020", published by MarketsandMarkets, the global Aptamers Market is ... in 2015, at a CAGR of 17.89%. ... F igures spread through 125 P ...
(Date:6/29/2015)... , June 29, 2015   For the seventh ... sciences to assess their overall digital maturity called the ... that these companies are not maturing fast enough. While ... industry in numerous ways overall and customers are increasingly ... terms of digital customer engagement.  ...
Breaking Biology Technology:MediVet Biologics Acquires Exclusive Patent License from Kansas State University 2MediVet Biologics Acquires Exclusive Patent License from Kansas State University 3AACC's Journal, Clinical Chemistry, Continues to Have Significant Impact on Medical Testing, Healthcare 2AACC's Journal, Clinical Chemistry, Continues to Have Significant Impact on Medical Testing, Healthcare 3Aptamers Market Worth $244.93 Million by 2020 2Aptamers Market Worth $244.93 Million by 2020 3Aptamers Market Worth $244.93 Million by 2020 4Results from Digital Maturity Study Show Pharma Lagging 2Results from Digital Maturity Study Show Pharma Lagging 3Results from Digital Maturity Study Show Pharma Lagging 4
... by the British Heart Foundation (BHF), has tested a new ... patient,s risk of having a heart attack (1). ... Research Excellence, in collaboration with the University of Cambridge are ... CT scanning to image the disease processes directly in the ...
... age of high-speed computing, the photon is king. However, producing ... time-consuming process, until now. Thanks to the work by ... The Edward S. Rogers Sr. Department of Electrical & Computer ... the production of special class of photons faster and easier. ...
... ALBANY, N.Y., April 30, 2012   AMRI ... an approach that further focuses its research and ... the life sciences and other industries. AMRI SMARTSOURCING™ ... customers to reach more successful outcomes. SMARTSOURCING™ is ...
Cached Biology Technology: Scientists develop new technique that could improve heart attack prediction 2Research breakthrough takes supercomputing out of the lab 2AMRI Launches SMARTSOURCING™ For Contract Manufacturing and Research Services 2
Improve inventory management with stainless steel red cell canisters; ensure product safety with CO2 or LN2 backup systems. A complete solution for your blood banking needs....
... Reverse Transcriptase (RT) is an improved version ... is a DNA polymerase that synthesizes a ... or an RNA:DNA hybrid. This enzyme is ... mutations rather than a deletion in the ...
... microsatellite research, the 4300 System features Saga ... software available. SagaGT automates electrophoresis, lane finding, ... and allele scoring. ,Saga GT is ... 1.0 (Unix) was initially developed at the ...
Request Info...
Biology Products: