Navigation Links
An eye gene colors butterfly wings red
Date:7/21/2011

Red may mean STOP or I LOVE YOU! A red splash on a toxic butterfly's wing screams DON'T EAT ME! In nature, one toxic butterfly species may mimic the wing pattern of another toxic species in the area. By using the same signal, they send a stronger message: DON'T EAT US!

Now several research teams that include Smithsonian scientists in Panama, have discovered that Heliconius butterflies mimic each other's red wing patterns through changes in the same gene.

Not only does this gene lead to the same red wing patterns in neighboring species, it also leads to a large variety of red wing patterns in Heliconius species across the Americas that result when it is turned on in other areas of the wings.

Because different butterfly species evolved red wing patterns independently, resulting in a huge variety of patterns we see today, researchers thought that different genes were responsible in each case.

"The variety of wing patterns in Heliconius butterflies has always fascinated collectors," said Owen McMillan, geneticist at the Smithsonian Tropical Research Institute, "People have been trying to sort out the genetics of mimicry rings since the 1970's. Now we put together some old genetics techniques and some newer genomics techniques and came up with the very surprising result that only one gene codes for all of the red wing patterns. The differences that we see in the patterns seems to be due to the way the gene is regulated."

First the team used genetic screens to look for genes that are turned on differently in butterflies with red wing patterns and lacking in other butterflies without this pattern. When they discovered a promising gene, they used stains to show where this gene was expressed on butterfly wings showing different patterns. They found the gene to be expressed exactly where red pigment occurs in the wings in every case. The match was so perfect that they could identify subtle differences in red patterns between species using these stains.

They combed genetic librariesgene banks to see if the gene they found matched genes characterized in other studies. "We found that the same gene that codes for the red in Heliconius wings was already identified as a gene called optix that is involved in eye development in other organisms," said co-author Heather Hines, "It is intriguing that the ommochrome pigments that color these wings red are also expressed in the eye. How the optix gene codes for wing color raises a host of new questions."

"Tropical biologists have been striving for centuries to explain what it is that makes life in the tropics so biologically diverse," said STRI Director, Eldredge Bermingham, "Now this group has discovered that a single gene underlies one of the most spectacular evolutionary radiations in nature! Perhaps the genetic basis for diversity will turn out to be far more simple than we expected."


'/>"/>

Contact: Beth King
kingb@si.edu
716-357-9075
Smithsonian Tropical Research Institute
Source:Eurekalert  

Related biology news :

1. How can a colorblind animal change its colors to blend into the background?
2. Wildflower colors tell butterflies how to do their jobs
3. Hearing colors, seeing sounds: New research explores sensory overlap in the brain
4. From butterflies wings to bank notes -- how natures colors could cut bank fraud
5. Butterfly vision, wing colors linked, UCI study finds
6. UCI-led butterfly study sheds light on convergent evolution
7. NASAs Aura satellite measures pollution butterfly from fires in central Africa
8. Butterfly study reveals traits and genes associated with establishment of new populations
9. Internet catches updated butterfly and moth website
10. Chinese-German collaboration yields new species of Large Blue butterfly
11. Artificial butterfly in flight and filmed
Post Your Comments:
*Name:
*Comment:
*Email:
Related Image:
An eye gene colors butterfly wings red
(Date:6/22/2016)... 2016  The American College of Medical Genetics and Genomics ... as one of the fastest-growing trade shows during the ... Bellagio in Las Vegas . ... growth in each of the following categories: net square feet ... of attendees. The 2015 ACMG Annual Meeting was ranked 23 ...
(Date:6/16/2016)... June 16, 2016 The ... expected to reach USD 1.83 billion by 2024, ... Research, Inc. Technological proliferation and increasing demand in ... expected to drive the market growth. ... The development of advanced multimodal techniques for ...
(Date:6/3/2016)... 2016 Das DOTM ... Nepal hat ein 44 Millionen ... Kennzeichen, einschließlich Personalisierung, Registrierung und IT-Infrastruktur, an ... und Implementierung von Identitätsmanagementlösungen. Zahlreiche renommierte internationale ... teilgenommen, aber Decatur wurde als konformste und ...
Breaking Biology News(10 mins):
(Date:6/23/2016)... June 23, 2016 Houston Methodist Willowbrook ... Cy-Fair Sports Association to serve as their official ... Houston Methodist Willowbrook will provide sponsorship support, athletic ... with association coaches, volunteers, athletes and families. ... Cy-Fair Sports Association and to bring Houston Methodist ...
(Date:6/23/2016)... , June 23, 2016  The Prostate Cancer Foundation (PCF) is ... treatments and faster cures for prostate cancer. Members of the Class of 2016 ... countries. Read More About the Class of 2016 PCF ... ... ...
(Date:6/23/2016)... 2016   EpiBiome , a precision microbiome engineering ... debt financing from Silicon Valley Bank (SVB). The financing ... advance its drug development efforts, as well as purchase ... "SVB has been an incredible strategic partner to us ... bank would provide," said Dr. Aeron Tynes Hammack ...
(Date:6/23/2016)... OTTAWA, ON (PRWEB) , ... June 23, 2016 , ... ... former DNA Technical Leader at the Arkansas State Crime Laboratory, has joined STACS DNA ... joining the STACS DNA team,” said Jocelyn Tremblay, President and COO of STACS DNA. ...
Breaking Biology Technology: