Navigation Links
Hearing on the wing: New structure discovered in butterfly ears
Date:10/21/2009

A clever structure in the ear of a tropical butterfly that potentially makes it able to distinguish between high and low pitch sounds has been discovered by scientists from the University of Bristol, UK.

The team believes that the remarkable structure may be associated with the detection of predators, in particular birds. The Blue Morpho butterflies (Morpho peleides), native to Central and South America, are more famous for their amazing wing colouration and now turn out to have ears on their wings.

The simple ear sits at the base of the wing and looks like a sheet of stretched rubber. This oval-shaped tympanal membrane, with an unusual dome in the middle, is attached directly to sensory organs and is responsible for converting sound waves into signals that can be picked up by nerve cells.

Using a tiny laser beam, lead researcher Katie Lucas scanned the surface of the membrane while it was in action, and found that lower pitch sounds cause vibrations only in a part of the outer membrane while higher pitch sounds caused the entire membrane to vibrate.

The unusual structure and properties of the membrane mean that this butterfly ear may be able to distinguish between low and high pitch sounds, and measurements of nerve recordings suggested the butterfly is more sensitive to lower pitches. Butterfly hearing is unusually sensitive to low pitch sounds compared to other insects with similar ears.

The structure of the membrane could mean the butterfly can hear a greater range of pitches, which as Katie Lucas and her colleagues postulate, may enhance the abilities of these butterflies to listen for birds. The team suggest that sensitivity to lower pitch sounds may detect the beating of birds' wings, while higher pitches may tune into birdsong.


'/>"/>

Contact: Hannah Johnson
hannah.johnson@bristol.ac.uk
44-117-928-8896
University of Bristol
Source:Eurekalert

Page: 1

Related biology news :

1. Gene discovery reveals a critical proteins function in hearing
2. Diminuendo -- New mouse model for understanding cause of progressive hearing loss
3. New insights into progressive hearing loss
4. Study offers clues to beating hearing loss
5. Feeling your words: Hearing with your face
6. A BBVA Foundation project comes up with a system enabling detection of cetacean hearing loss
7. House Ear Institute, TGen and Belgian researchers identify gene in age-related hearing loss
8. Genes that control cell death fingered in age-related hearing loss
9. Biophysical method may help to recover hearing
10. Study links low-frequency hearing to shape of the cochlea
11. A screening strategy using zebrafish targets genes that protect against hearing loss
Post Your Comments:
*Name:
*Comment:
*Email:
(Date:4/16/2014)... memories improves during childhood, associated with structural changes ... and parietal cortices. New research from UC Davis ... this crucial time. Eventually, that could give insights ... into and during adolescence and affect memory, such ... the middle of the brain, the hippocampus plays ...
(Date:4/16/2014)... composed of Dr. Martin Prechtl, Leo Heim and their ... has discovered a new method of generating hydrogen using ... is of particular interest when it comes to fuel ... and mild hydrogen production using water and formaldehyde", have ... . , Among other applications, the new approach can ...
(Date:4/15/2014)... away in Hartford, Connecticut, a Puerto Rican community is ... that is so authentic it has caught the attention ... Gregory J. Anderson (University of Connecticut) took a close ... markets of Hartford and uncovered evidence that gives new ... using for years: home is in the kitchen. , ...
Breaking Biology News(10 mins):How kids' brain structures grow as memory develops 2The human food connection: A new study reveals more about our relationship to food 2The human food connection: A new study reveals more about our relationship to food 3
... Spanish . , How can it be proved ... have a cognitive problem, such as memory or concentration problems ... and even feign them in order to receive more money ... a pioneering research in Spain. This research was carried out ...
... YORK, Jan. 10 U.S. Market for Personal Safes, a ... for,personal safes will grow by double digits in 2008 and ... personal safes accounted for 36%,of the overall U.S. safes market. ... share. An estimated 300,000 safes are sold each year in,the ...
... Harbor Laboratorys (CSHL) researcher Raffaella Sordella, Ph.D. was awarded ... Conquer Lung Cancer. The two-year grant will fund CSHLs ... genetic mutations that appear to be a trigger in ... deaths in the United States. The mutations, called ...
Cached Biology News:Half of the people suffering from head injuries fake to receive financial help 2Personal Safes Market to Top $308 Million by 2011 2Cold Spring Harbor Laboratory's lung cancer research program awarded $100,000 grant 2
(Date:1/14/2014)... Jan. 14, 2014  RXi Pharmaceuticals Corporation ... discovering, developing and commercializing innovative therapies addressing ... today announced that it received the Notice ... and Trademark Office on its unique self-delivering ... fibrosis. The patent covers the use of ...
(Date:1/14/2014)... 2014   Kinaxis ®, provider of RapidResponse ... and sales and operations planning ( S&OP ) service, ... Biomanufacturing Summit , which will be held at ... 2014.  At the conference, join Kinaxis customer Elisabeth ... she presents ,Supply Chain: Improving Network Effectiveness, on Friday, ...
(Date:1/14/2014)... (PRWEB) January 14, 2014 Kerr Corporation, a ... video and additional how-to information about dual arch impressions on ... with Dual Arch Impressions,” the blog entry serves up a ... and houses a step-by-step demonstration by Dr. David Little as ... management and Take 1 Advanced Rigid as the dual arch ...
(Date:1/14/2014)... 2014 Independent publisher Bitingduck Press, with ... Canada, has big ideas for 2014 in production and ... are to produce high-quality, low-cost, DRM-free ebooks and to ... , The first major development will be bookstore ... called WebBytez . WebBytez is a patent-pending way ...
Breaking Biology Technology:RXi Pharmaceuticals Receives US Notice of Allowance for a Key Patent Relating to its Self-Delivering Technology with sd-rxRNAs targeting CTGF, including RXI-109, for the Treatment of Fibrotic Disorders 2RXi Pharmaceuticals Receives US Notice of Allowance for a Key Patent Relating to its Self-Delivering Technology with sd-rxRNAs targeting CTGF, including RXI-109, for the Treatment of Fibrotic Disorders 3Event Alert: Kinaxis Customer to Present at the Biomanufacturing Summit "Supply Chain: Improving Network Effectiveness" 2Bitingduck Press Looks Forward to 2014 With Multimedia E-books 2
... Dmitriy Ovcharenko, Rich Jarvis, , ... , ... experimental tool for reducing the expression of specific , ... gene function analysis, target , ...
... Ambion's newest line of plasmid siRNA , ... feature polymerase (pol) II promoters that drive transcription , ... an antibiotic resistance gene. , The ... strong promoter is active in a broad range of cell types and , ...
... Trace amounts of ribonuclease (RNase) , ... RNases are , ubiquitous in ... air, on anything touched by bare hands or on anything left , ... , or eliminate RNase contamination. ...
Cached Biology Technology:Delivering siRNAs to Difficult Cell Types 2Delivering siRNAs to Difficult Cell Types 3Delivering siRNAs to Difficult Cell Types 4Delivering siRNAs to Difficult Cell Types 5Delivering siRNAs to Difficult Cell Types 6Delivering siRNAs to Difficult Cell Types 7Drive Long-Term Silencing with CMV Vectors 2Drive Long-Term Silencing with CMV Vectors 3Combat RNase Contamination in the Lab 2Combat RNase Contamination in the Lab 3Combat RNase Contamination in the Lab 4Combat RNase Contamination in the Lab 5
Imject Freund's Complete Adjuvant (FCA)...
... cytoplasmic granules, is a key step ... (e.g. basophils, neutrophils, eosinophils, and mast ... secretory granules contain many proinflammatory mediators ... proteases (Hallgren, 2001). Tryptase, a tetrameric ...
... was developed specifically for reduced mutagenicity to ... in agarose or acrylamide gels. SYBR Safe stain ... but SYBR Safe stain's detection sensitivity is better ... comes as a premixed solution that can be ...
... The S&S Custom Processing Service enables scientists who ... and data analysis software to have their biological ... 16 analytes. Its as easy as 1-2-3 ... quantified in your samples from the S&S antibody ...
Biology Products: